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  • 1. A. Marques, Ana F.
    et al.
    Roerdink, Desiree L.
    Baumberger, Tamara
    de Ronde, Cornel E. J.
    Ditchburn, Robert G.
    Denny, Alden
    Thorseth, Ingunn H.
    Okland, Ingeborg
    Lilley, Marvin D.
    Whitehouse, Martin J.
    Naturhistoriska riksmuseet, Enheten för geovetenskap.
    Pedersen, Rolf B.
    The Seven Sisters Hydrothermal System: First Record of Shallow Hybrid Mineralization Hosted in Mafic Volcaniclasts on the Arctic Mid-Ocean Ridge2020Annet (Annet vitenskapelig)
    Abstract [en]

    We document the discovery of an active, shallow, seafloor hydrothermal system (known as the Seven Sisters Vent Field) hosted in mafic volcaniclasts at a mid-ocean ridge setting. The vent field is located at the southern part of the Arctic mid-ocean ridge where it lies on top of a flat-topped volcano at ~130 m depth. Up to 200 deg C phase-separating fluids vent from summit depressions in the volcano, and from pinnacle-like edifices on top of large hydrothermal mounds. The hydrothermal mineralization at Seven Sisters manifests as a replacement of mafic volcaniclasts, as direct intraclast precipitation from the hydrothermal fluid, and as elemental sulfur deposition within orifices. Barite is ubiquitous, and is sequentially replaced by pyrite, which is the first sulfide to form, followed by Zn-Cu-Pb-Ag bearing sulfides, sulfosalts, and silica. The mineralized rocks at Seven Sisters contain highly anomalous concentrations of ‘epithermal suite’ elements such as Tl, As, Sb and Hg, with secondary alteration assemblages including silica and dickite. Vent fluids have a pH of ~5 and are Ba and metal depleted. Relatively high dissolved Si (~7.6 mmol/L Si) combined with low (0.2–0.4) Fe/Mn suggest high-temperature reactions at ~150 bar. A delta-13C value of -5.4 permil in CO2 dominated fluids denotes magmatic degassing from a relatively undegassed reservoir. Furthermore, low CH4 and H2 (<0.026 mmol/kg and <0.009 mmol/kg, respectively) and 3He/4He of ~8.3 R/Racorr support a MORB-like, sediment-free fluid signature from an upper mantle source. Sulfide and secondary alteration mineralogy, fluid and gas chemistry, as well as delta-34S and 87Sr/86Sr values in barite and pyrite indicate that mineralization at Seven Sisters is sustained by the input of magmatic fluids with minimal seawater contribution. 226Ra/Ba radiometric dating of the barite suggests that this hydrothermal system has been active for at least 4670 +/- 60 yr.

  • 2.
    Abalde, Samuel
    Naturhistoriska riksmuseet, Enheten för zoologi.
    MATEdb: a new phylogenomic-driven database for Metazoa2022Annet (Annet (populærvitenskap, debatt, mm))
    Fulltekst (pdf)
    fulltext
  • 3.
    Abalde, Samuel
    et al.
    Naturhistoriska riksmuseet, Enheten för zoologi.
    Crocetta, Fabio
    Department of Integrative Marine Ecology (EMI), Stazione Zoologica Anton Dohrn, Villa Comunale, I-80121 Napoli, Italy.
    Tenorio, Manuel J.
    Departamento CMIM y Q. Inorgánica-INBIO, Facultad de Ciencias, Universidad de Cádiz, 11510 Puerto Real, Cádiz, Spain.
    D'Aniello, Salvatore
    Department of Biology and Evolution of Marine Organisms (BEOM), Stazione Zoologica Anton Dohrn, Villa Comunale, I-80121 Napoli, Italy.
    Fassio, Giulia
    Department of Biology and Biotechnologies “Charles Darwin”, Sapienza University of Rome, Zoology–Viale dell’Università 32, 00185 Rome, Italy.
    Rodríguez-Flores, Paula C.
    Museum of Comparative Zoology, Department of Organismic and Evolutionary Biology, Harvard University, 26 Oxford Street, Cambridge, MA 02138, USA.
    Uribe, Juan E.
    Departamento de Biodiversidad y Biología Evolutiva, Museo Nacional de Ciencias Naturales (MNCN-CSIC), José Gutiérrez Abascal 2, 28006 Madrid, Spain.
    Afonso, Carlos M.L.
    Centre of Marine Sciences (CCMAR), Universidade do Algarve, Campus de Gambelas, 8005 - 139 Faro, Portugal.
    Oliverio, Marco
    Department of Biology and Biotechnologies “Charles Darwin”, Sapienza University of Rome, Zoology–Viale dell’Università 32, 00185 Rome, Italy.
    Zardoya, Rafael
    Departamento de Biodiversidad y Biología Evolutiva, Museo Nacional de Ciencias Naturales (MNCN-CSIC), José Gutiérrez Abascal 2, 28006 Madrid, Spain.
    Hidden species diversity and mito-nuclear discordance within the Mediterranean cone snail, Lautoconus ventricosus2023Inngår i: Molecular Phylogenetics and Evolution, ISSN 1055-7903, E-ISSN 1095-9513, Vol. 186, s. 107838-107838, artikkel-id 107838Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    The Mediterranean cone snail, Lautoconus ventricosus, is currently considered a single species inhabiting the whole Mediterranean basin and the adjacent Atlantic coasts. Yet, no population genetic study has assessed its taxonomic status. Here, we collected 245 individuals from 75 localities throughout the Mediterranean Sea and used cox1 barcodes, complete mitochondrial genomes, and genome skims to test whether L. ventricosus represents a complex of cryptic species. The maximum likelihood phylogeny based on complete mitochondrial genomes recovered six main clades (hereby named blue, brown, green, orange, red, and violet) with sufficient sequence divergence to be considered putative species. On the other hand, phylogenomic analyses based on 437 nuclear genes only recovered four out of the six clades: blue and orange clades were thoroughly mixed and the brown one was not recovered. This mito-nuclear discordance revealed instances of incomplete lineage sorting and introgression, and may have caused important differences in the dating of main cladogenetic events. Species delimitation tests proposed the existence of at least three species: green, violet, and red + blue + orange (i.e., cyan). Green plus cyan (with sympatric distributions) and violet, had West and East Mediterranean distributions, respectively, mostly separated by the Siculo-Tunisian biogeographical barrier. Morphometric analyses of the shell using species hypotheses as factor and shell length as covariate showed that the discrimination power of the studied parameters was only 70.2%, reinforcing the cryptic nature of the uncovered species, and the importance of integrative taxonomic approaches considering morphology, ecology, biogeography, and mitochondrial and nuclear population genetic variation.

    Fulltekst (pdf)
    fulltext
  • 4.
    Abalde, Samuel
    et al.
    Naturhistoriska riksmuseet, Enheten för zoologi.
    Dutertre, Sébastien
    IBMM, Université de Montpellier CNRS.
    Zardoya, Rafael
    Museo Nacional de Ciencias Naturales.
    A Combined Transcriptomics and Proteomics Approach Reveals the Differences in the Predatory and Defensive Venoms of the Molluscivorous Cone Snail Cylinder ammiralis (Caenogastropoda: Conidae)2021Inngår i: Toxins, ISSN 2072-6651, E-ISSN 2072-6651, Vol. 13, nr 9, s. 642-642Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Venoms are complex mixtures of proteins that have evolved repeatedly in the animal kingdom. Cone snail venoms represent one of the best studied venom systems. In nature, this venom can be dynamically adjusted depending on its final purpose, whether to deter predators or hunt prey. Here, the transcriptome of the venom gland and the proteomes of the predation-evoked and defensive venoms of the molluscivorous cone snail Cylinder ammiralis were catalogued. A total of 242 venom-related transcripts were annotated. The conotoxin superfamilies presenting more different peptides were O1, O2, T, and M, which also showed high expression levels (except T). The three precursors of the J superfamily were also highly expressed. The predation-evoked and defensive venoms showed a markedly distinct profile. A total of 217 different peptides were identified, with half of them being unique to one venom. A total of 59 peptides ascribed to 23 different protein families were found to be exclusive to the predatory venom, including the cono-insulin, which was, for the first time, identified in an injected venom. A total of 43 peptides from 20 protein families were exclusive to the defensive venom. Finally, comparisons of the relative abundance (in terms of number of peptides) of the different conotoxin precursor superfamilies showed that most of them present similar abundance regardless of the diet.

    Fulltekst (pdf)
    Abalde_etal_2021_Toxins
  • 5.
    Abalde, Samuel
    et al.
    Naturhistoriska riksmuseet, Enheten för zoologi.
    Tellgren-Roth, Christian
    Heintz, Julia
    Vinnere Pettersson, Olga
    Jondelius, Ulf
    Naturhistoriska riksmuseet, Enheten för zoologi.
    The draft genome of the microscopic Nemertoderma westbladi sheds light on the evolution of Acoelomorpha genomes2023Inngår i: Frontiers in Genetics, E-ISSN 1664-8021, Vol. 14, artikkel-id 1244493Artikkel i tidsskrift (Fagfellevurdert)
  • 6. Aberer, André
    et al.
    Stamatakis, Alexis
    Ronquist, Fredrik
    Naturhistoriska riksmuseet, Enheten för bioinformatik och genetik.
    An efficient independence sampler for updating branches in Bayesian Markov chain Monte Carlo sampling of phylogenetic trees2016Inngår i: Systematic Biology, ISSN 1063-5157, E-ISSN 1076-836X, Vol. 65, nr 1, s. 161-176Artikkel i tidsskrift (Fagfellevurdert)
  • 7. Abu El-Enen, M.M.
    et al.
    Abu-Alam, T.S.
    Whitehouse, Martin J.
    Naturhistoriska riksmuseet, Enheten för geovetenskap.
    Ali, K.A.
    Okrusch, M.
    P–T path and timing of crustal thickening during amalgamation of East and West Gondwana: A case study from the Hafafit Metamorphic Complex, Eastern Desert of Egypt.2016Inngår i: Lithos, ISSN 0024-4937, E-ISSN 1872-6143, Vol. 263, s. 213-238Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    The southeastern sector of the Hafafit Metamorphic Complex, southern Eastern Desert of Egypt comprises infrastructural orthogneisses of tonalite and syenogranite parentage, amphibolites, and a volcano-sedimentary association. These are overthrust by an obducted suprastructural ophiolite nappes via the Nugrus thrust. The protolith of the biotite–hornblende-gneisses was formed during island-arc accretion, while that of the garnet–biotite gneisses were formed in a within-plate regime, consistent with a transition to a post-collisional setting. The volcano-sedimentary association comprises interbedded and intercalated highly foliated metapelitic schists, metabasites, and leucocratic gneisses, deposited in a back-arc basin. The metapelites and the leucocratic gneisses originated from immature Fe-shales and arkoses derived from intermediate-mafic and acidic igneous rocks, respectively, via weak chemical weathering in a tectonically active island arc terrane. The intercalated amphibolites were derived from tholeiitic basalts generated in a back-arc setting.

    The volcano-sedimentary association was metamorphosed under upper-amphibolite facies conditions with pressures of 9–13 kbar and temperatures of 570–675 °C, as derived from conventional geothermobarometry and pseudosection calculation. A steep, tight clockwise P–T path is constrained and a geothermal gradient around 20 °C/km is estimated for the peak metamorphism. We assume that deformation and metamorphism are due to crustal thickening during the collision of East and West Gondwana, where peak metamorphism took place in the middle to lower crust at 33 km average crustal depth. This was followed by a subsequent quasi-isothermal decompression due to rapid exhumation during wrench tectonics. Sinistral transcurrent shearing with extensional denudation resulted in vertical ductile thinning that was accompanied by heat input from magmatism, as indicated by a higher geothermal gradient during retrograde metamorphism and exhumation of the complex.

    U–Pb data from magmatic zircons yields protolith ages of 731 ± 3 Ma for the biotite–hornblende gneisses and 646 ± 12 Ma for the garnet–biotite gneisses. Conforming to field evidence, our geochronology data point to a depositional age of the volcano-sedimentary cover at around 650 Ma. The age of metamorphism is constrained by a low Th/U ratio of a zircon grain crystallized at an age of 597 ± 6 Ma.

  • 8.
    ACOSTA HOSPITALECHE, Carolina
    et al.
    División Paleontología Vertebrados, Museo de La Plata, Paseo del Bosque s/n, B1900FWA, La Plata, Argentina.
    HAGSTRÖM, Jonas
    Naturhistoriska riksmuseet, Enheten för paleobiologi.
    REGUERO, Marcelo
    División Paleontología Vertebrados, Museo de La Plata, Paseo del Bosque s/n, B1900FWA, La Plata and Instituto Antártico Argentino (Dirección Nacional del Antártico), 25 de mayo 1143, San Martín, Argentina.
    Historical perspective of Otto Nordenskjöld´s Antarctic fossil penguin collection and Carl Wiman’s contribution2017Inngår i: Polar Record, ISSN 0032-2474, E-ISSN 1475-3057, Vol. 53, nr 4, s. 364-375Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    The early explorer and scientist Otto Nordenskjöld, leader of the Swedish South Polar Expedition of 1901–1903, was the first to collect Antarctic penguin fossils. The site is situated in the northeastern region of Seymour Island and constitutes one of the most important localities in the study of fossilised penguins. The task of describing these specimens together with fossilised whale remains was given to Professor Carl Wiman (1867–1944) at Uppsala University, Sweden. Although the paradigm for the systematic study of penguins has changed considerably over recent years, Wiman's contributions are still remarkable. His establishment of grouping by size as a basis for classification was a novel approach that allowed them to deal with an unexpectedly high morphological diversity and limited knowledge of penguin skeletal anatomy. In the past, it was useful to provide a basic framework for the group that today could be used as ‘taxon free’ categories. First, it was important to define new species, and then to establish a classification based on size and robustness. This laid the foundation for the first attempts to use morphometric parameters for the classification of isolated penguin bones. The Nordenskjöld materials constitute an invaluable collection for comparative purposes, and every year researchers from different countries visit this collection.

  • 9. Adam, B.
    et al.
    Klawonn, I.
    Svedén, J.
    Bergkvist, J.
    Nahar, N.
    Walve, J.
    Littmann, S.
    Whitehouse, Martin J.
    Naturhistoriska riksmuseet, Enheten för geovetenskap.
    Lavik, G.
    Kuypers, M.M.M.
    Ploug, H.
    N2-fixation, ammonium release, and N-transfer to the microbial and classical food web within a plankton community.2016Inngår i: The ISME Journal, ISSN 1751-7362, E-ISSN 1751-7370, Vol. 19, s. 450-459Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    We investigated the role of N2-fixation by the colony-forming cyanobacterium, Aphanizomenon spp., for the plankton community and N-budget of the N-limited Baltic Sea during summer by using stable isotope tracers combined with novel secondary ion mass spectrometry, conventional mass spectrometry and nutrient analysis. When incubated with 15N2, Aphanizomenon spp. showed a strong 15N-enrichment implying substantial 15N2-fixation. Intriguingly, Aphanizomenon did not assimilate tracers of 15NH4+ from the surrounding water. These findings are in line with model calculations that confirmed a negligible N-source by diffusion-limited NH4+ fluxes to Aphanizomenon colonies at low bulk concentrations (<250 nm) as compared with N2-fixation within colonies. No N2-fixation was detected in autotrophic microorganisms <5 μm, which relied on NH4+ uptake from the surrounding water. Aphanizomenon released about 50% of its newly fixed N2 as NH4+. However, NH4+ did not accumulate in the water but was transferred to heterotrophic and autotrophic microorganisms as well as to diatoms (Chaetoceros sp.) and copepods with a turnover time of ~5 h. We provide direct quantitative evidence that colony-forming Aphanizomenon releases about half of its recently fixed N2 as NH4+, which is transferred to the prokaryotic and eukaryotic plankton forming the basis of the food web in the plankton community. Transfer of newly fixed nitrogen to diatoms and copepods furthermore implies a fast export to shallow sediments via fast-sinking fecal pellets and aggregates. Hence, N2-fixing colony-forming cyanobacteria can have profound impact on ecosystem productivity and biogeochemical processes at shorter time scales (hours to days) than previously thought.

  • 10. Adrian, Brent
    et al.
    Werdelin, Lars
    Naturhistoriska riksmuseet, Enheten för paleobiologi.
    Grossman, Aryeh
    New Miocene Carnivora (Mammalia) from Moruorot and Kalodirr, Kenya2018Inngår i: Palaeontologia Electronica, ISSN 1935-3952, E-ISSN 1094-8074, Vol. 21Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

     We describe new carnivoran fossils from Kalodirr and Moruorot, two late Early

    Miocene sites in the Lothidok Formation of West Turkana, Kenya. The fossils include a

    new species of viverrid, Kichechia savagei  sp. nov., a new genus and species of felid,

    Katifelis nightingalei  gen. et sp. nov., and an unidentified musteloid. We also report

    new records of the amphicyonid Cynelos macrodon. These new fossils increase the

    known diversity of African Early Miocene carnivorans and highlight regional differences

    in Africa.

    Fulltekst (pdf)
    fulltext
  • 11.
    Adroit, Benjamin
    et al.
    Naturhistoriska riksmuseet, Enheten för paleobiologi.
    Grímsson, Friðgeir
    University of Vienna, Department of Botany and Biodiversity Research, 1030 Vienna, Austria.
    Suc, Jean-Pierre
    Sorbonne Université, CNRS-INSU, Institut des Sciences de la Terre Paris, ISTeP UMR7193, 75005 Paris, France.
    Escarguel, Gilles
    Laboratoire d'Ecologie des Hydrosystèmes Naturels et Anthropisés UMR CNRS 5023 LEHNA, Université Claude Bernard Lyon 1, France.
    Zetter, Reinhard
    University of Vienna, Department of Palaeontology, 1090 Vienna, Austria.
    Bouchal, Johannes M.
    University of Vienna, Department of Botany and Biodiversity Research, 1030 Vienna, Austria.
    Fauquette, Séverine
    ISEM, Univ Montpellier, CNRS, EPHE, IRD, Montpellier, France.
    Zhuang, Xin
    Institute for Atmospheric and Earth System Research (INAR), University of Helsinki, Finland.
    Djamali, Morteza
    Institut Méditerranéen de Biodiversité et d'Ecologie–IMBE (Aix Marseille Univ, Avignon Université, CNRS, IRD), Europôle de l'Arbois, Aix-en-Provence, France.
    Are morphological characteristics of Parrotia (Hamamelidaceae) pollen species diagnostic?2022Inngår i: Review of Palaeobotany and Palynology, ISSN 0034-6667, E-ISSN 1879-0615, Vol. 307, s. 104776-104776, artikkel-id 104776Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Parrotia persica is one of the most notable endemic relict tree species growing in the Hyrcanian forest at the southern Caspian Sea. The recent discovery of sibling species Parrotia subaequalis, occurring in the temperate forests of south-eastern China, offers the opportunity to compare their morphology and ecological preferences and to dig deeper into the paleophytogeographic history of the genus from a perspective. Since pollen morphology of these species would be essential to unravel the origin and evolution of these Arcto-Tertiary species, the present study aimed to investigate whether it is possible to segregate pollen from these two species. Therefore, a detailed combined light- and scanning electron microscopy-based pollen-analysis of each taxon was conducted, the pollen was described, measured, and compared using statistical approaches and principal component analyses to establish unbiased results. The correlation-based principal component analysis achieved for each species shows an overall good superposition of pollen grains measured in equatorial and polar views in the first principal plane, revealing that the P. persica pollen is morphometrically as homogeneous as that of P. subaequalis. Then, the significant difference, mainly driven by lumen density, has been highlighted between the two species. Ultimately, the cross-validation of the resulting two-species linear discriminants classifier shows that based upon this reference dataset, (sub)fossil pollen grain can now be confidently assigned to either of the two species with an 85.8% correct-assignment rate. This opens new doors in the affiliation of fossil Parrotia pollen and suggests that previous pollen records need to be revised.

    Fulltekst (pdf)
    fulltext
  • 12. Adroit, Benjamin
    et al.
    Teodoridis, Vasilis
    Güner, H. Tuncay
    Denk, Thomas
    Naturhistoriska riksmuseet, Enheten för paleobiologi.
    Patterns of insect damage types reflect complex environmental signal in Miocene forest biomes of Central Europe and the Mediterranean2021Inngår i: Global and Planetary Change, ISSN 0921-8181, E-ISSN 1872-6364, Vol. 199, artikkel-id 103451Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Ecosystems are defined by the community of living organisms and how they interact together and with theirenvironment. Insects and plants are key taxa in terrestrial ecosystems and their network determines the trophicstructure of the environment. However, what drives the interactions between plants and insects in modern andfossil ecosystems is not well understood. In this study, we analyzed insect damage richness and frequency in 5000 fossil leaves deposited during the early Miocene at 20–17 Ma along a latitudinal gradient from Europe (twolocalities in Czech Republic) to Turkey (one locality) in a temperate climate setting. Damage frequency wasmainly linked with abiotic factors (temperature, precipitation seasonality) whereas damage richness was mainlylinked with biotic factors (plant richness, biome). Univariate analysis of insect damage types consistently suggested closer trophic similarity between the Mediterranean and either the one or the other Central European plant assemblage. In contrast, multivariate analysis of all insect damage types indicated closer similarity between the two Central European sites highlighting the importance of biogeographic legacy and geographic closeness to the plant-insect interaction patterns. Our results underscore the high complexity of the herbivory network andcall for careful interpretations of plant-insect interaction patterns in palaeoecological studies. Finally, comparing the trophic similarity between different localities using total evidence plots as done in this work might be apromising complementary method in comparative studies of plant-insect interactions.

    Fulltekst (pdf)
    Adroit et al. 2021
  • 13. Agangi, Andrea
    et al.
    Reddy, S M
    Plavsa, D
    Vieru, C
    Selvaraja, V
    LaFlamme, C
    Jeon, Heejin
    Naturhistoriska riksmuseet, Enheten för geovetenskap.
    Martin, L
    Nozaki, T
    Takaya, Y
    Suzuki, K
    Subsurface deposition of Cu-rich massive sulphide underneath a Palaeoproterozoic seafloor hydrothermal system—the Red Bore prospect, Western Australia2018Inngår i: Mineralium Deposita, s. 1-18Artikkel i tidsskrift (Fagfellevurdert)
  • 14. Agustí, J.
    et al.
    Werdelin, LarsNaturhistoriska riksmuseet, Enheten för paleobiologi.
    Influence of climate on faunal evolution in the Quaternary of Europe1995Collection/Antologi (Fagfellevurdert)
  • 15.
    Ahmed, Mohammed
    et al.
    Naturhistoriska riksmuseet, Enheten för zoologi.
    Adedidran, Funmilola
    Holovachov, Oleksandr
    Naturhistoriska riksmuseet, Enheten för zoologi.
    A draft transcriptome of a parasite Neocamacolaimus parasiticus (Camacolaimidae, Plectida)2021Inngår i: Journal of Nematology, E-ISSN 0022-300X, artikkel-id e2021Artikkel i tidsskrift (Fagfellevurdert)
  • 16.
    Ahmed, Mohammed
    et al.
    Naturhistoriska riksmuseet, Enheten för zoologi. Harper Adams University.
    Back, Matthew
    Prior, Thomas
    Karssen, Gerrit
    Lawson, Rebecca
    Adams, Ian
    Sapp, Melanie
    Metabarcoding of soil nematodes: the importance of taxonomiccoverage and availability of reference sequences in choosingsuitable marker(s)2019Inngår i: Metabarcoding and Metagenomics, Vol. 3, s. 77-99Artikkel i tidsskrift (Fagfellevurdert)
    Fulltekst (pdf)
    fulltext
  • 17.
    Ahmed, Mohammed
    et al.
    Naturhistoriska riksmuseet, Enheten för zoologi.
    Boström, Sven
    Naturhistoriska riksmuseet, Enheten för zoologi.
    Holovachov, Oleksandr
    Naturhistoriska riksmuseet, Enheten för zoologi.
    Revision of the genus Cobbionema Filipjev, 1922 (Nematoda, Chromadorida, Selachinematidae)2020Inngår i: European journal of taxonomy, E-ISSN 2118-9773, Vol. 702, s. 1-34Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    This paper reports on the genus Cobbionema Filipjev, 1922 in Sweden with the description of four species and a revision of the genus. Cobbionema acrocerca Filipjev, 1922 is relatively small in size, with a tail that has a conical proximal and a digitate distal section. Cobbionema cylindrolaimoides Schuurmans Stekhoven, 1950 is similar to C. acrocerca in most characters except having a larger body size and heavily cuticularized mandibles. Cobbionema brevispicula sp. nov. is characterised by short spicules and a conoid tail. Cobbionema acuminata sp. nov. is characterised by a long two-part spicule, a conical tail and three (one mid dorsal and two ventrosublateral) sharply pointed tines in the anterior chamber of the stoma that are located more anterior than in all the other species. We also present a molecular phylogeny of the family based on the nearly full-length 18S and the D2-D3 expansion segment of the 28S rRNA genes. Maximum Likelihood and Bayesian trees inferred from both genes strongly support a clade that included Cobbionema, Demonema Cobb, 1894 and Halichoanolaimus de Man, 1888 and another clade with Gammanema Cobb, 1920 and Latronema Wieser, 1954 nested together. None of the trees supported the monophyly of the subfamilies Choniolaiminae and Selachinematinae.

    Fulltekst (pdf)
    fulltext
  • 18.
    Ahmed, Mohammed
    et al.
    Naturhistoriska riksmuseet, Enheten för zoologi.
    Boström, Sven
    Naturhistoriska riksmuseet, Enheten för zoologi.
    Holovachov, Oleksandr
    Naturhistoriska riksmuseet, Enheten för zoologi.
    Rik rundmaskfauna i Store Mosse nationalpark hittades med DNA-metastreckkodning2023Inngår i: Fauna och flora : populär tidskrift för biologi, ISSN 0014-8903, Vol. 118, nr 2, artikkel-id 24-33Artikkel i tidsskrift (Annet (populærvitenskap, debatt, mm))
    Fulltekst (pdf)
    fulltext
  • 19.
    Ahmed, Mohammed
    et al.
    Naturhistoriska riksmuseet, Enheten för zoologi.
    Holovachov, Oleksandr
    Naturhistoriska riksmuseet, Enheten för zoologi.
    Description of a new marine predatory nematode Latronema dyngi sp. nov. (Nematoda, Chromadorida, Selachinematidae) from the west coast of Sweden and an updated phylogeny of Chromadoria2020Inngår i: Marine Biodiversity, ISSN 1867-1616, E-ISSN 1867-1624, Vol. 50, nr 113, s. 1-11Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    A new nematode species, Latronema dyngi sp. nov., is described from Skagerrak off the west coast of Sweden with the type locality near Dyngö island. Latronema dyngi sp. nov. is characterized by multispiral amphideal fovea with circular outline, 0.2– 0.3 corresponding body diameters wide in males and 0.1–0.2 corresponding body diameters wide in females, 12 cuticular longitudinal ridges and 18–27 precloacal supplements in males. Latronema dyngi sp. nov. most closely resembles L. orcinum in terms of body length; demanian ratios a, b, c and c′; number of amphid turns in males; and the ratio of spicule length to cloacal body diameter. The two species can be differentiated by the number longitudinal ridges on the cuticle (12 for Latronema dyngi sp. nov. vs 20–22 for L. orcinum) and spicule length (65–78 μm for L. dyngi vs 60 for L. orcinum) and shape (weakly arcuate for L. dyngi sp. nov. vs strongly arcuate for L. orcinum). We also performed a maximum likelihood phylogenetic analysis on over 250 nematodes of the subclass Chromadoria based on their nearly full-length 18S rDNA sequences. In agreement with previous studies, our analysis supported Selachinematidae as a monophyletic group and placed Richtersia Steiner, 1916 within Desmodoridae Filipjev, 1922 or just outside of the main Desmodorida clade with the latter placement not well supported.

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  • 20.
    Ahmed, Mohammed
    et al.
    Naturhistoriska riksmuseet, Enheten för zoologi.
    Holovachov, Oleksandr
    Naturhistoriska riksmuseet, Enheten för zoologi.
    Twenty Years after De Ley and Blaxter—How Far Did We Progress in Understanding the Phylogeny of the Phylum Nematoda?2021Inngår i: Animals, E-ISSN 2076-2615, Vol. 11, nr 12, s. 3479-3479Artikkel i tidsskrift (Fagfellevurdert)
  • 21.
    Ahmed, Mohammed
    et al.
    Naturhistoriska riksmuseet, Enheten för zoologi.
    Roberts, Nickellaus G.
    Adediran, Funmilola
    Smythe, Ashleigh B.
    Kocot, Kevin M.
    Holovachov, Oleksandr
    Naturhistoriska riksmuseet, Enheten för zoologi.
    Phylogenomic Analysis of the Phylum Nematoda: Conflicts and Congruences With Morphology, 18S rRNA, and Mitogenomes2022Inngår i: Frontiers in Ecology and Evolution, E-ISSN 2296-701X, Vol. 9, artikkel-id 769565Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Phylogenetic relationships within many lineages of the phylum Nematoda remainunresolved, despite numerous morphology-based and molecular analyses. Weperformed several phylogenomic analyses using 286 published genomes andtranscriptomes and 19 new transcriptomes by focusing on Trichinellida, Spirurina,Rhabditina, and Tylenchina separately, and by analyzing a selection of species fromthe whole phylum Nematoda. The phylogeny of Trichinellida supported the divisionof Trichinella into encapsulated and non-encapsulated species and placed them assister to Trichuris. The Spirurina subtree supported the clades formed by species fromAscaridomorpha and Spiruromorpha respectively, but did not support Dracunculoidea.The analysis of Tylenchina supported a clade that included all sampled species fromTylenchomorpha and placed it as sister to clades that included sampled speciesfrom Cephalobomorpha and Panagrolaimomorpha, supporting the hypothesis thatpostulates the single origin of the stomatostylet. The Rhabditina subtree placed a cladecomposed of all sampled species from Diplogastridae as sister to a lineage consistingof paraphyletic Rhabditidae, a single representative of Heterorhabditidae and a cladecomposed of sampled species belonging to Strongylida. It also strongly supportedall suborders within Strongylida. In the phylum-wide analysis, a clade composedof all sampled species belonging to Enoplia were consistently placed as sister toDorylaimia + Chromadoria. The topology of the Nematoda backbone was consistentwith previous studies, including polyphyletic placement of sampled representatives ofMonhysterida and Araeolaimida.

  • 22.
    Ahmed, Mohammed
    et al.
    Naturhistoriska riksmuseet, Enheten för zoologi.
    Slos, Dieter
    Holovachov, Oleksandr
    Naturhistoriska riksmuseet, Enheten för zoologi.
    Assessing the diversity of nematodes in the Store Mosse National Park (Sweden) using metabarcoding2024Inngår i: Metabarcoding and Metagenomics, E-ISSN 2534-9708, Vol. 8, s. 1-8Artikkel i tidsskrift (Fagfellevurdert)
  • 23.
    Ahola, Markus
    Naturhistoriska riksmuseet, Enheten för miljöforskning och övervakning.
    Climate Change in the Baltic Sea2021 Fact Sheet: Baltic Sea Environment Proceedings n°180. HELCOM/Baltic Earth 20212021Rapport (Annet vitenskapelig)
  • 24. Ahti, Teuvo
    et al.
    Mayrhofer, Helmut
    Schultz, Matthias
    Tehler, Anders
    Naturhistoriska riksmuseet, Enheten för botanik.
    Fryday, Alan M
    First supplement to the lichen checklist of South Africa2016Inngår i: Bothalia, African Biodiversity & Conservation Journal, Vol. 46, nr 1Artikkel i tidsskrift (Fagfellevurdert)
  • 25. ALARIE, YVES
    et al.
    MICHAT, MARIANO C.
    Bergsten, Johannes
    Naturhistoriska riksmuseet, Enheten för zoologi.
    HÁJEK, JIŘÍ
    Morphology of the larvae of Rhantaticus congestus (Klug, 1833) and phylogenetic comparison with other known Aciliini (Coleoptera: Dytiscidae: Dytiscinae)2023Inngår i: Zootaxa, ISSN 1175-5326, E-ISSN 1175-5334, Vol. 5380, nr 3, s. 247-264Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    We describe the second- and third instar larvae of the diving beetle Rhantaticus congestus (Klug, 1833), including detailed morphometric and chaetotaxic analyses of the cephalic capsule, head appendages, legs, terminal abdominal segment and urogomphi in order to discover useful characters for distinguishing Rhantaticus Sharp, 1882 larvae from those of other known Aciliini (Coleoptera: Dytiscidae: Dytiscinae). A parsimony analysis based on 94 larval characteristics of nine Aciliini species in five genera (Acilius Leach, 1817, Graphoderus Dejean, 1833, Rhantaticus, Sandracottus Sharp, 1882, Thermonectus Dejean, 1833) was conducted using the program TNT. Rhantaticus shares with all these genera several larval character states which support its inclusion in the Aciliini. Whereas Rhantaticus larva stands out from other known genera by several unique character states, our parsimony analysis did not recover any clear phylogenetic position of this genus within the Aciliini.

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  • 26. ALARIE, YVES
    et al.
    MICHAT, MARIANO C.
    RANARILALATIANA, TOLOTRA
    Bergsten, Johannes
    Naturhistoriska riksmuseet, Enheten för zoologi.
    Larval morphology of the Madagascan endemic diving beetle genus Hovahydrus Biström, 1982 (Coleoptera: Dytiscidae) and phylogenetic comparison with other known Hyphydrini2022Inngår i: Zootaxa, ISSN 1175-5326, E-ISSN 1175-5334, Vol. 5219, nr 3, s. 227-246Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    We describe for the first time the instar III larva of the diving beetle genus Hovahydrus Biström, 1982, based on H. praetextus (Guignot, 1951) and a new species yet to be described (identified here as Hovahydrus sp. near H. minutissimus (Régimbart, 1903)). We include detailed morphometric and chaetotaxic analyses of the cephalic capsule, head appendages, legs, last abdominal segment and urogomphi in order to discover useful characters for distinguishing Hovahydrus larvae from those of other known Hyphydrini (Coleoptera: Dytiscidae, Hydroporinae). A provisional parsimony analysis based on larval characteristics of 11 Hyphydrini species in eight genera was conducted using the program TNT. Larval morphology supports a close relationship between Hovahydrus, Hyphydrus Illiger, 1802, and the endemic South Africa genera Andex Sharp, 1882, Coelhydrus Sharp, 1882, Darwinhydrus Sharp, 1882 and Primospes Sharp, 1882. 

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  • 27.
    Aleksija, Neijmane
    et al.
    Statens Veterinärmedicinska Anstalt.
    Jasmine, Stavenow
    Statens Veterinärmedicinska Anstalt.
    Roos, Anna
    Naturhistoriska riksmuseet, Enheten för miljöforskning och övervakning.
    Kallunki-Nyström, Jonas
    Naturhistoriska riksmuseet, Enheten för miljöforskning och övervakning.
    Hälsa, sjukdomar och dödsorsaker hos marina däggdjur 2020: Resultat från obduktion och provtagning av marina däggdjur som undersökts på SVA2021Rapport (Annet (populærvitenskap, debatt, mm))
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  • 28. Alerstam, Thomas
    et al.
    Rosén, Mikael
    Bäckman, Johan
    Ericson, Per G P
    Naturhistoriska riksmuseet, Forskningsavdelningen centralt.
    Hellgren, Olof
    Flight speeds among bird species: allometric and phylogenetic effects.2007Inngår i: PLoS biology, ISSN 1544-9173, E-ISSN 1545-7885, Vol. 5, nr 8, s. e197-Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Flight speed is expected to increase with mass and wing loading among flying animals and aircraft for fundamental aerodynamic reasons. Assuming geometrical and dynamical similarity, cruising flight speed is predicted to vary as (body mass)(1/6) and (wing loading)(1/2) among bird species. To test these scaling rules and the general importance of mass and wing loading for bird flight speeds, we used tracking radar to measure flapping flight speeds of individuals or flocks of migrating birds visually identified to species as well as their altitude and winds at the altitudes where the birds were flying. Equivalent airspeeds (airspeeds corrected to sea level air density, Ue) of 138 species, ranging 0.01-10 kg in mass, were analysed in relation to biometry and phylogeny. Scaling exponents in relation to mass and wing loading were significantly smaller than predicted (about 0.12 and 0.32, respectively, with similar results for analyses based on species and independent phylogenetic contrasts). These low scaling exponents may be the result of evolutionary restrictions on bird flight-speed range, counteracting too slow flight speeds among species with low wing loading and too fast speeds among species with high wing loading. This compression of speed range is partly attained through geometric differences, with aspect ratio showing a positive relationship with body mass and wing loading, but additional factors are required to fully explain the small scaling exponent of Ue in relation to wing loading. Furthermore, mass and wing loading accounted for only a limited proportion of the variation in Ue. Phylogeny was a powerful factor, in combination with wing loading, to account for the variation in Ue. These results demonstrate that functional flight adaptations and constraints associated with different evolutionary lineages have an important influence on cruising flapping flight speed that goes beyond the general aerodynamic scaling effects of mass and wing loading.

  • 29.
    Alexander, Louise
    et al.
    Birkbeck College, University of London, United Kingdom.
    Snape, Joshua
    Naturhistoriska riksmuseet, Enheten för geovetenskap.
    Joy, Katherine
    University of Manchester, United Kingdom.
    Downes, Hilary
    Birkbeck College, University of London, United Kingdom.
    Crawford, Ian
    Birkbeck College, University of London, United Kingdom.
    An analysis of Apollo lunar soil samples 12070,889, 12030,187, and 12070,891: Basaltic diversity at the Apollo 12 landing site and implications for classification of small-sized lunar samples2016Inngår i: Meteoritics and Planetary Science, ISSN 1086-9379, E-ISSN 1945-5100, Vol. 51, s. 1654-1677Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Lunar mare basalts provide insights into the compositional diversity of the Moon's interior. Basalt fragments from the lunar regolith can potentially sample lava flows from regions of the Moon not previously visited, thus, increasing our understanding of lunar geological evolution. As part of a study of basaltic diversity at the Apollo 12 landing site, detailed petrological and geochemical data are provided here for 13 basaltic chips. In addition to bulk chemistry, we have analyzed the major, minor, and trace element chemistry of mineral phases which highlight differences between basalt groups. Where samples contain olivine, the equilibrium parent melt magnesium number (Mg#; atomic Mg/[Mg + Fe]) can be calculated to estimate parent melt composition. Ilmenite and plagioclase chemistry can also determine differences between basalt groups. We conclude that samples of approximately 1–2 mm in size can be categorized provided that appropriate mineral phases (olivine, plagioclase, and ilmenite) are present. Where samples are fine-grained (grain size <0.3 mm), a “paired samples t-test” can provide a statistical comparison between a particular sample and known lunar basalts. Of the fragments analyzed here, three are found to belong to each of the previously identified olivine and ilmenite basalt suites, four to the pigeonite basalt suite, one is an olivine cumulate, and two could not be categorized because of their coarse grain sizes and lack of appropriate mineral phases. Our approach introduces methods that can be used to investigate small sample sizes (i.e., fines) from future sample return missions to investigate lava flow diversity and petrological significance.

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  • 30.
    Ali, Imran
    et al.
    Stockholms universitet.
    Kremer, Reinhard K.
    Skogby, Henrik
    Naturhistoriska riksmuseet, Enheten för geovetenskap.
    Johnsson, Mats
    Synthesis and Magnetic Properties of the Ternary OxofluorideFe3Sb4O6F62020Inngår i: European Journal of Inorganic Chemistry, ISSN 1434-1948, E-ISSN 1099-1948, s. 3746-3752Artikkel i tidsskrift (Fagfellevurdert)
  • 31. Ali, K.A.
    et al.
    Surour, A.A:
    Whitehouse, Martin J.
    Naturhistoriska riksmuseet, Enheten för geovetenskap.
    Andresen, A.
    Single zircon Hf-O isotope constraints on the origin of A-type granites from the Jabal Al-Hassir ring complex, Saudi Arabia.2015Inngår i: Precambrian Research, ISSN 0301-9268, E-ISSN 1872-7433, Vol. 256, s. 131-147Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    The Jabal Al-Hassir ring complex in the southern Arabian Shield is an alkaline granite complex comprising an inner core of biotite granite that outwardly becomes a porphyritic sodic-calcic amphibole (ferrobarroisite–katophorite) granite. A combined study of mineral chemistry and single zircon Hf–O zircon isotope analyses was carried out to infer the magma sources of the Neoproterozoic post-collisional A-type granitoids in Saudi Arabia. The granitic rocks show high positive initial ɛHf(t) values of +7.0 to +10.3 and δ18O values of +5.8‰ to +7.4‰ that are consistent with melting of a juvenile crustal protolith that was formed during the Neoproterozoic assembly of the Arabian-Nubian Shield (ANS). Crustal-model ages (Hf-tNC) of 0.71–0.94 Ga indicate minor contribution from an older continental crust in the formation of the Jabal Al-Hassir granitic rocks (crystallization age = 620 ±3 Ma), but any such component is likely to be Neoproterozoic in age. Temperature and oxygen fugacity (ƒO2) estimates suggested that the Jabal Al-Hassir A-type granite magma was generated at high temperature (820–1050 °C) and low ƒO2. Geochemical characteristics (e.g., low ƒO2), geochronological data, and Hf and O isotope compositions, indicate that the magmas of the Neoproterozoic A-type granites of the Jabal Al-Hassir ring complex were likely generated by crustal partial melting of a juvenile Neoproterozoic lower crustal tholeiitic rocks, following collision between East and West Gondwana in the final stages of the evolution of the Arabian Shield.

  • 32. Ali, Kamal A
    et al.
    Jeon, Heejin
    Naturhistoriska riksmuseet, Enheten för geovetenskap.
    Andresen, Arild
    Li, Shuang-Qing
    Harbi, Hesham M
    Hegner, Ernst
    U–Pb zircon geochronology and Nd–Hf–O isotopic systematics of the Neoproterozoic Hadb adh Dayheen ring complex, Central Arabian Shield, Saudi Arabia2014Inngår i: Lithos, Vol. 206, s. 348-360Artikkel i tidsskrift (Fagfellevurdert)
  • 33. Aliabadian, Mansour
    et al.
    Kaboli, Mohammad
    Foerschler, Marc I.
    Nijman, Vincent
    Chamani, Atefeh
    Tillier, Annie
    Prodon, Roger
    Pasquet, Eric
    Ericson, Per G P
    Naturhistoriska riksmuseet, Forskningsavdelningen centralt.
    Zuccon, Dario
    Erratum to: Convergent evolution of morphological and ecological traits in the open-habitat chat complex (Aves, Muscicapidae: Saxicolinae) (vol 65, pg 35, 2012)2012Inngår i: Molecular Phylogenetics and Evolution, ISSN 1055-7903, E-ISSN 1095-9513, Vol. 65, nr 3, s. 1017-1019Artikkel i tidsskrift (Fagfellevurdert)
  • 34. Aliabadian, Mansour
    et al.
    Kaboli, Mohammad
    Förschler, Marc I
    Nijman, Vincent
    Chamani, Atefeh
    Tillier, Annie
    Prodon, Roger
    Pasquet, Eric
    Ericson, Per G P
    Naturhistoriska riksmuseet, Forskningsavdelningen centralt.
    Zuccon, Dario
    Convergent evolution of morphological and ecological traits in the open-habitat chat complex (Aves, Muscicapidae: Saxicolinae).2012Inngår i: Molecular Phylogenetics and Evolution, ISSN 1055-7903, E-ISSN 1095-9513, Vol. 65, nr 1, s. 35-45Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Open-habitat chats (genera Myrmecocichla, Cercomela, Oenanthe and relative) are a morphologically and ecologically cohesive group of genera with unclear phylogenetic relationships. They are distributed mostly in open, arid and/or rocky habitats of Africa and Eurasia. Here, we present the most comprehensive molecular phylogenetic analysis of this group to date, with a complete taxon sampling at the species level. The analysis, based on a multilocus dataset including three mitochondrial and three nuclear loci, allows us to elucidate the phylogenetic relationships and test the traditional generic limits. All genera are non-monophyletic, suggesting extensive convergence on similar plumage patterns in unrelated species. While the colour pattern appear to be a poor predictor of the phylogenetic relationships, some of the ecological and behavioural traits agree relatively well with the major clades. Following our results, we also propose a revised generic classification for the whole group.

  • 35. ALIPANAH, HELEN
    et al.
    ASSELBERGS, JAN
    MALM, TOBIAS
    Naturhistoriska riksmuseet, Enheten för zoologi.
    SLAMKA, FRANTIŠEK
    Taxonomic study of the subfamily Pyraustinae (Lepidoptera: Crambidae)in Iran2023Inngår i: Zootaxa, ISSN 1175-5326, E-ISSN 1175-5334, Vol. 5289, nr 1, s. 1-82Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Sixty-seven species of the subfamily Pyraustinae from 17 genera and two tribes are listed. Anania verbascalis verbascalis ([Denis & Schiffermüller], 1949) is considered as a senior synonym of A. verbascalis parvalis (Osthelder, 1935) syn. n.; Pyrausta virginalis Duponchel, 1832 as a senior synonym of P. perkeo Amsel, 1970 syn. n.; and P. ferrealis (Hampson, 1900) as a senior synonym of P. euergestalis Amsel, 1954 syn. n. Thirteen species, namely Anania coronata (Hufnagel, 1767), A. murcialis (Ragonot, 1895), A. terrealis (Treitschke, 1829), Pyrausta ferrealis (Hampson, 1900), P. armeniaca Slamka, 2013, P. zeitunalis Caradja, 1916, P. cingulata (Linnaeus, 1758), P. delicatalis Caradja, 1916, P. tatarica Kemal et al., 2020, Loxostege sedakowialis (Eversmann, 1852), L. wagneri Zerny in Wagner, 1929, L. mucosalis (Herrich-Schäffer, 1848) and L. peltaloides (Rebel in Wagner, 1932), are newly reported from Iran. Additionally, a redescription of the male of P. delicatalis and the female of L. sedakowialis, as well as description of the hitherto unknown female of P. delicatalis are presented. The intraspecific variations of the species if present are discussed and additional new diagnostic characters to separate the closely related species are presented. Data on the geographical distribution of the Iranian species of this subfamily are provided.

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  • 36.
    Alipanah, Helen
    et al.
    Iranian Research Institute of Plant Protection (IRIPP).
    Malm, Tobias
    Naturhistoriska riksmuseet, Enheten för zoologi.
    Asselbergs, Jan
    A new species of Sitochroa Hübner, 1825 (Lepidoptera, Crambidae, Pyraustinae) from Iran, with taxonomic notes on the genus2020Inngår i: Nota lepidopterologica, ISSN 0342-7536, Vol. 43, s. 61-76Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Sitochroa urmiensis sp. nov. is described based on a single male collected in West Azarbaijan Province, Iran. Sitochroa palealis (Denis & Schiffermüller, 1775) is considered as a senior synonym of Loxostege farsalis Amsel, 1950 syn. nov. Loxostege malekalis Amsel, 1950 is transferred to the genus Sitochroa Hübner, as S. malekalis (Amsel, 1950) comb. nov. And the hitherto unknown female of S. malekalis is described and illustrated.

  • 37. Al-Khirbash, Salah
    et al.
    Heikal, Mohamed Th. S.
    Whitehouse, Martin J.
    Naturhistoriska riksmuseet, Enheten för geovetenskap.
    Windley, Brian F.
    Al Selwi, Khaled
    Evolution and Mineralization of the Precambrian Basement of Yemen2021Inngår i: The Geology of the Arabian-Nubian Shield, Regional Geology Reviews / [ed] Z. Hamimi et al. (eds.), Springer, 2021Kapittel i bok, del av antologi (Fagfellevurdert)
  • 38.
    Allard, Bert
    et al.
    Man-Technology-Environment Research Centre (MTM), Örebro University, SE-701 82 Örebro, Sweden.
    Sjöberg, Susanne
    Department of Geological Sciences, Stockholm University, SE-106 91 Stockholm, Sweden.
    Sjöberg, Viktor
    Man-Technology-Environment Research Centre (MTM), Örebro University, SE-701 82 Örebro, Sweden.
    Skogby, Henrik
    Naturhistoriska riksmuseet, Enheten för geovetenskap. Department of Geosciences, Swedish Museum of Natural History, SE-114 18 Stockholm, Sweden.
    Karlsson, Stefan
    Man-Technology-Environment Research Centre (MTM), Örebro University, SE-701 82 Örebro, Sweden.
    Metal Exchangeability in the REE-Enriched Biogenic Mn Oxide Birnessite from Ytterby, Sweden2023Inngår i: Minerals, E-ISSN 2075-163X, Vol. 13, s. 1-14, artikkel-id 1023Artikkel i tidsskrift (Fagfellevurdert)
  • 39. Alonso, Marta
    et al.
    Jiménez, Juan A.
    Nylinder, Stephan
    Hedenäs, Lars
    Naturhistoriska riksmuseet, Enheten för botanik.
    Cano, Maria J.
    Disentangling generic limits in Chionoloma, Oxystegus, Pachyneuropsis and Pseudosymblepharis (Bryophyta: Pottiaceae): An inquiry into their phylogenetic relationships2016Inngår i: Taxon, ISSN 0040-0262, E-ISSN 1996-8175, Vol. 65, s. 3-18Artikkel i tidsskrift (Fagfellevurdert)
  • 40. Alroy, John
    et al.
    Bernor, R. L.
    Fortelius, Mikael
    Werdelin, Lars
    Naturhistoriska riksmuseet, Enheten för paleobiologi.
    The MN System: regional or continental?1998Inngår i: Mitteilungen der Bayerischen Staatssammlung für Paläontologie und historische Geologie, Vol. 38, s. 243-258Artikkel i tidsskrift (Fagfellevurdert)
  • 41. Alstrom, Per
    et al.
    Olsson, Urban
    Rasmussen, Pamela C.
    Yao, Cheng-Te
    Ericson, Per G P
    Naturhistoriska riksmuseet, Forskningsavdelningen centralt.
    Sundberg, Per
    Morphological, vocal and genetic divergence in the Cettia acanthizoides complex (Aves: Cettiidae)2007Inngår i: Zoological Journal of the Linnean Society, ISSN 0024-4082, E-ISSN 1096-3642, Vol. 149, nr 3, s. 437-452Artikkel i tidsskrift (Fagfellevurdert)
  • 42. Alstrom, Per
    et al.
    Rasmussen, Pamela C.
    Sangster, George
    Dalvi, Shashank
    Round, Philip D.
    Zhang, Ruiying
    Yao, Cheng-Te
    Irestedt, Martin
    Naturhistoriska riksmuseet, Enheten för bioinformatik och genetik.
    Le Manh, Hung
    Lei, Fumin
    Olsson, Urban
    Multiple species within the Striated Prinia Prinia crinigera-Brown Prinia P. polychroa complex revealed through an integrative taxonomic approach2019Inngår i: Ibis, ISSN 0019-1019, E-ISSN 1474-919X, s. 1-32Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    We re-evaluated the taxonomy of the Striated Prinia Prinia crinigera-Brown Prinia P. polychroa complex using molecular, morphological and vocal analyses. The extensive seasonal, sexual, age-related, geographical and taxon-specific variation in this complex has never before been adequately studied. As no previous genetic or vocal analyses have focused on this group, misinterpretation of taxonomic signals from limited conventional morphological study alone was likely. Using mitochondrial and nuclear DNA, we found that P. crinigera sensu lato (s.l.) comprises two non-sister groups of taxa (Himalayan crinigera and Chinese striata groups) that differ substantially morphologically and vocally and that are broadly sympatric in Yunnan Province, China. Prinia polychroa cooki (Myanmar) and P. p. rocki (southern Vietnam) are each morphologically, vocally and genetically distinct. Thai, Cambodian and Laotian populations formerly ascribed to P. p. cooki are morphologically and vocally most similar to and most closely related to Javan P. p. polychroa, and require a new name, proposed here. Prinia p. bangsi of Yunnan is part of the crinigera group rather than of P. polychroa, and hence there is no evidence for sympatry between P. polychroa s.l. and P. crinigera s.l., nor of the occurrence of P. polychroa in mainland China or Taiwan. We recommend the recognition of five species in the complex, with the following suggestions for new English names: Himalayan Prinia P. crinigera sensu stricto (s.s.; with subspecies striatula, crinigera, yunnanensis and bangsi); Chinese Prinia P. striata (subspecies catharia, parumstriata and striata); Burmese Prinia P. cooki (monotypic); Annam Prinia P. rocki (monotypic) and Deignan’s Prinia P. polychroa s.s. (subspecies Javan polychroa and the new Southeast Asian taxon). This study underlines the importance of using multiple datasets for the elucidation of diversity of cryptic bird species and their evolutionary history and biogeography.

  • 43. Alström, Per
    et al.
    Cibois, Alice
    Irestedt, Martin
    Naturhistoriska riksmuseet, Enheten för bioinformatik och genetik.
    Zuccon, Dario
    Gelang, Magnus
    Fjeldså, Jon
    Andersen, Michael J.
    Moyle, Robert G.
    Pasquet, Eric
    Olsson, Urban
    Comprehensive molecular phylogeny of the grassbirds and allies (Locustellidae) reveals extensive non-monophyly of traditional genera, and a proposal for a new classification2018Inngår i: Molecular Phylogenetics and Evolution, ISSN 1055-7903, E-ISSN 1095-9513, Vol. 127, s. 367-375Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    The widespread Old World avian family Locustellidae (‘grassbirds and allies’) comprises 62 extant species in 11 genera. In the present study, we used one mitochondrial and, for most species, four nuclear loci to infer the phylogeny of this family. We analysed 59 species, including the five previously unsampled genera plus two genera that had not before been analysed in a densely sampled dataset. This study revealed extensive disagreement with current taxonomy; the genera Bradypterus, Locustella, Megalurus, Megalurulus and Schoenicola were all found to be non-monophyletic. Non-monophyly was particularly pronounced for Megalurus, which was widely scattered across the tree. Three of the five monotypic genera (Amphilais, Buettikoferella and Malia) were nested within other genera; one monotypic genus (Chaetornis) formed a clade with one of the two species of Schoenicola; whereas the position of the fifth monotypic genus (Elaphrornis) was unresolved. Robsonius was confirmed as sister to the other genera. We propose a phylogenetically informed revision of genus-level taxonomy, including one new generic name. Finally, we highlight several non-monophyletic species complexes and deep intra-species divergences that point to conflict in taxonomy and suggest an underestimation of current species diversity in this group.

  • 44. Alström, Per
    et al.
    Ericson, Per G P
    Naturhistoriska riksmuseet, Forskningsavdelningen centralt.
    Olsson, Urban
    Sundberg, Per
    Phylogeny and classification of the avian superfamily Sylvioidea.2006Inngår i: Molecular Phylogenetics and Evolution, ISSN 1055-7903, E-ISSN 1095-9513, Vol. 38, nr 2, s. 381-97Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Sylvioidea is one of the three superfamilies recognized within the largest avian radiation, the parvorder Passerida. In the present study, which is the first taxon-dense analysis of the Sylvioidea based on sequence data (nuclear myoglobin intron II and mitochondrial cytochrome b gene), we investigate the interrelationships among the four "sylvioid" clades found by previous workers, as well as the relationships within the largest of these clades. The nuclear and mitochondrial loci estimate basically the same phylogeny, with minor differences in resolution. The trees based on myoglobin and the combined data identify a strongly supported clade that includes the taxa previously allocated to Sylvioidea, except for Sitta (nuthatches), Certhia (treecreepers), Parus (tits), Remiz (penduline tits), Troglodytes and Campylorhynchus (wrens), Polioptila (gnatcatchers), and Regulus (crests/kinglets); this clade also comprises larks, which have previously been placed in the superfamily Passeroidea. We refer to this clade as Sylvioidea. This clade is further divided into 10 main, well-supported clades, which we suggest form the basis for a revised classification.

  • 45. Alström, Per
    et al.
    Fregin, Silke
    Norman, Janette A
    Ericson, Per G P
    Naturhistoriska riksmuseet, Forskningsavdelningen centralt.
    Christidis, Les
    Olsson, Urban
    Multilocus analysis of a taxonomically densely sampled dataset reveal extensive non-monophyly in the avian family Locustellidae.2011Inngår i: Molecular Phylogenetics and Evolution, ISSN 1055-7903, E-ISSN 1095-9513, Vol. 58, nr 3, s. 513-26Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    The phylogeny of most of the species in the avian passerine family Locustellidae is inferred using a Bayesian species tree approach (Bayesian Estimation of Species Trees, BEST), as well as a traditional Bayesian gene tree method (MrBayes), based on a dataset comprising one mitochondrial and four nuclear loci. The trees inferred by the different methods agree fairly well in topology, although in a few cases there are marked differences. Some of these discrepancies might be due to convergence problems for BEST (despite up to 1×10(9) iterations). The phylogeny strongly disagrees with the current taxonomy at the generic level, and we propose a revised classification that recognizes four instead of seven genera. These results emphasize the well known but still often neglected problem of basing classifications on non-cladistic evaluations of morphological characters. An analysis of an extended mitochondrial dataset with multiple individuals from most species, including many subspecies, suggest that several taxa presently treated as subspecies or as monotypic species as well as a few taxa recognized as separate species are in need of further taxonomic work.

  • 46. Alström, Per
    et al.
    Höhna, Sebastian
    Gelang, Magnus
    Naturhistoriska riksmuseet, Enheten för zoologi.
    Ericson, Per G P
    Naturhistoriska riksmuseet, Forskningsavdelningen centralt.
    Olsson, Urban
    Non-monophyly and intricate morphological evolution within the avian family Cettiidae revealed by multilocus analysis of a taxonomically densely sampled dataset.2011Inngår i: BMC Evolutionary Biology, E-ISSN 1471-2148, Vol. 11, s. 352-Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    BACKGROUND: The avian family Cettiidae, including the genera Cettia, Urosphena, Tesia, Abroscopus and Tickellia and Orthotomus cucullatus, has recently been proposed based on analysis of a small number of loci and species. The close relationship of most of these taxa was unexpected, and called for a comprehensive study based on multiple loci and dense taxon sampling. In the present study, we infer the relationships of all except one of the species in this family using one mitochondrial and three nuclear loci. We use traditional gene tree methods (Bayesian inference, maximum likelihood bootstrapping, parsimony bootstrapping), as well as a recently developed Bayesian species tree approach (*BEAST) that accounts for lineage sorting processes that might produce discordance between gene trees. We also analyse mitochondrial DNA for a larger sample, comprising multiple individuals and a large number of subspecies of polytypic species.

    RESULTS: There are many topological incongruences among the single-locus trees, although none of these is strongly supported. The multi-locus tree inferred using concatenated sequences and the species tree agree well with each other, and are overall well resolved and well supported by the data. The main discrepancy between these trees concerns the most basal split. Both methods infer the genus Cettia to be highly non-monophyletic, as it is scattered across the entire family tree. Deep intraspecific divergences are revealed, and one or two species and one subspecies are inferred to be non-monophyletic (differences between methods).

    CONCLUSIONS: The molecular phylogeny presented here is strongly inconsistent with the traditional, morphology-based classification. The remarkably high degree of non-monophyly in the genus Cettia is likely to be one of the most extraordinary examples of misconceived relationships in an avian genus. The phylogeny suggests instances of parallel evolution, as well as highly unequal rates of morphological divergence in different lineages. This complex morphological evolution apparently misled earlier taxonomists. These results underscore the well-known but still often neglected problem of basing classifications on overall morphological similarity. Based on the molecular data, a revised taxonomy is proposed. Although the traditional and species tree methods inferred much the same tree in the present study, the assumption by species tree methods that all species are monophyletic is a limitation in these methods, as some currently recognized species might have more complex histories.

  • 47. Alström, Per
    et al.
    Jønsson, Knud A.
    Fjeldså, Jon
    Ödeen, Anders
    Ericson, Per G P
    Naturhistoriska riksmuseet, Forskningsavdelningen centralt.
    Irestedt, Martin
    Naturhistoriska riksmuseet, Enheten för bioinformatik och genetik.
    Dramatic niche shifts and morphological change in two insular bird species2015Inngår i: Royal Society Open Science, ISSN 2054-5703, Vol. 2, artikkel-id 140364Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Colonizations of islands are often associated with rapid morphological divergence. We present two previously unrecognized cases of dramatic morphological change and niche shifts in connection with colonization of tropical forest-covered islands. These evolutionary changes have concealed the fact that the passerine birds madanga, Madanga ruficollis, from Buru, Indonesia, and São Tomé shorttail, Amaurocichla bocagii, from São Tomé, Gulf of Guinea, are forest-adapted members of the family Motacillidae (pipits and wagtails). We show that Madanga has diverged mainly in plumage, which may be the result of selection for improved camouflage in its new arboreal niche, while selection pressures for other morphological changes have probably been weak owing to preadaptations for the novel niche. By contrast, we suggest that Amaurocichla's niche change has led to divergence in both structure and plumage.

    Fulltekst (pdf)
    fulltext
  • 48.
    Alström, Per
    et al.
    Animal Ecology, Department of Ecology and Genetics, Evolutionary Biology Centre, Uppsala University , Norbyvägen 18D, 752 36 Uppsala , Sweden;Key Laboratory of Zoological Systematics and Evolution, Institute of Zoology, Chinese Academy of Sciences , Beijing 100101 , Chinaa.
    Mohammadi, Zeinolabedin
    Department of Biology, Faculty of Sciences, Golestan University , Gorgan , Iran.
    Donald, Paul F
    BirdLife International, The David Attenborough Building , Pembroke Street, Cambridge CB2 3QZ , UK;Department of Zoology, University of Cambridge , Downing Street, Cambridge CB2 3EJ , UK.
    Nymark, Marianne
    Animal Ecology, Department of Ecology and Genetics, Evolutionary Biology Centre, Uppsala University , Norbyvägen 18D, 752 36 Uppsala , Sweden.
    Enbody, Erik D
    Department of Medical Biochemistry and Microbiology, Uppsala University , 751 23 Uppsala , Sweden;Department of Biomolecular Engineering, University of California, Santa Cruz , Santa Cruz, CA 95060 , USA.
    Irestedt, Martin
    Naturhistoriska riksmuseet, Enheten för bioinformatik och genetik. Naturhistoriska riksmuseet.
    Elisha, Emmanuel Barde
    Nigerian Montane Forest Project (NMPF), Ngel Nyaki Forest Reserve , Mambilla Plateau, Taraba State , Nigeria;A.P. Leventis Ornithological Research Institute (APLORI), Biological Conservatory , Jos-East, Plateau State , Nigeria.
    Ndithia, Henry K
    Department of Zoology, Ornithology Section, National Museums of Kenya , PO Box 40658-00100 GPO, Nairobi , Kenya.
    Tieleman, B Irene
    Groningen Institute for Evolutionary Life Sciences, University of Groningen , Nijenborgh 7, 9747 AG Groningen , The Netherlands.
    Engelbrecht, Derek
    Department of Biodiversity, University of Limpopo , Private Bag X1106, Sovenga, 0727 , South Africa.
    Olsson, Urban
    Department of Biological and Environmental Sciences, University of Gothenburg , PO Box 463, 405 30 Göteborg , Sweden;Gothenburg Global Biodiversity Centre , PO Box 461, 405 30 Göteborg , Sweden.
    Rancilhac, Loïs
    Animal Ecology, Department of Ecology and Genetics, Evolutionary Biology Centre, Uppsala University , Norbyvägen 18D, 752 36 Uppsala , Sweden.
    Stervander, Martin
    Bird Group, Natural History Museum , Akeman Street, Tring, Hertfordshire HP23 6AP , UK.
    Integrative taxonomy reveals unrecognised species diversity in African Corypha larks (Aves: Alaudidae)2023Inngår i: Zoological Journal of the Linnean Society, ISSN 0024-4082, E-ISSN 1096-3642Artikkel i tidsskrift (Fagfellevurdert)
    Fulltekst (pdf)
    fulltext
  • 49. Alström, Per
    et al.
    Mohammadi, Zeinolabedin
    Enbody, Erik D.
    Irestedt, Martin
    Naturhistoriska riksmuseet, Enheten för bioinformatik och genetik. Naturhistoriska riksmuseet.
    Engelbrecht, Derek
    Crochet, Pierre-André
    Guillaumet, Alban
    Rancilhac, Loïs
    Tieleman, B. Irene
    Olsson, Urban
    Donald, Paul F.
    Stervander, Martin
    Systematics of the avian family Alaudidae using multilocus and genomic data2023Inngår i: Avian Research, ISSN 2053-7166, Vol. 14, s. 100095-100095, artikkel-id 100095Artikkel i tidsskrift (Fagfellevurdert)
    Fulltekst (pdf)
    fulltext
  • 50. Alström, Per
    et al.
    Rasmussen, Pamela C.
    Sangster, George
    Dalvi, Shashank
    Round, Philip D.
    Zhang, Ruiying
    Yao, Cheng-Te
    Irestedt, Martin
    Naturhistoriska riksmuseet, Enheten för bioinformatik och genetik.
    Le Manh, Hung
    Lei, Fumin
    Olsson, Urban
    Multiple species within the Striated Prinia Prinia crinigera–Brown Prinia P. polychroa complex revealed through an integrative taxonomic approach2020Inngår i: Ibis, ISSN 0019-1019, E-ISSN 1474-919X, Vol. 162, nr 3, s. 936-967Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    We re‐evaluated the taxonomy of the Striated Prinia Prinia crinigera–Brown Prinia P. polychroa complex using molecular, morphological and vocal analyses. The extensive seasonal, sexual, age‐related, geographical and taxon‐specific variation in this complex has never before been adequately studied. As no previous genetic or vocal analyses have focused on this group, misinterpretation of taxonomic signals from limited conventional morphological study alone was likely. Using mitochondrial and nuclear DNA, we found that P. crinigera sensu lato (s.l.) comprises two non‐sister groups of taxa (Himalayan crinigera and Chinese striata groups) that differ substantially morphologically and vocally and that are broadly sympatric in Yunnan Province, China. Prinia polychroa cooki (Myanmar) and P. p. rocki (southern Vietnam) are each morphologically, vocally and genetically distinct. Thai, Cambodian and Laotian populations formerly ascribed to P. p. cooki are morphologically and vocally most similar to and most closely related to Javan P. p. polychroa, and require a new name, proposed here. Prinia p. bangsi of Yunnan is part of the crinigera group rather than of P. polychroa, and hence there is no evidence for sympatry between P. polychroa s.l. and P. crinigera s.l., nor of the occurrence of P. polychroa in mainland China or Taiwan. We recommend the recognition of five species in the complex, with the following suggestions for new English names: Himalayan Prinia P. crinigera sensu stricto (s.s.; with subspecies striatula, crinigera, yunnanensis and bangsi); Chinese Prinia P. striata (subspecies catharia, parumstriata and striata); Burmese Prinia P. cooki (monotypic); Annam Prinia P. rocki (monotypic) and Deignan's Prinia P. polychroa s.s. (subspecies Javan polychroa and the new Southeast Asian taxon). This study underlines the importance of using multiple datasets for the elucidation of diversity of cryptic bird species and their evolutionary history and biogeography.

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