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Ecological and evolutionary determinants for the adaptive radiation of the Madagascan vangas.
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2012 (English)In: Proceedings of the National Academy of Sciences of the United States of America, ISSN 0027-8424, E-ISSN 1091-6490, Vol. 109, no 17, 6620-5 p.Article in journal (Refereed) Published
Abstract [en]

Adaptive radiation is the rapid diversification of a single lineage into many species that inhabit a variety of environments or use a variety of resources and differ in traits required to exploit these. Why some lineages undergo adaptive radiation is not well-understood, but filling unoccupied ecological space appears to be a common feature. We construct a complete, dated, species-level phylogeny of the endemic Vangidae of Madagascar. This passerine bird radiation represents a classic, but poorly known, avian adaptive radiation. Our results reveal an initial rapid increase in evolutionary lineages and diversification in morphospace after colonizing Madagascar in the late Oligocene some 25 Mya. A subsequent key innovation involving unique bill morphology was associated with a second increase in diversification rates about 10 Mya. The volume of morphospace occupied by contemporary Madagascan vangas is in many aspects as large (shape variation)--or even larger (size variation)--as that of other better-known avian adaptive radiations, including the much younger Galapagos Darwin's finches and Hawaiian honeycreepers. Morphological space bears a close relationship to diet, substrate use, and foraging movements, and thus our results demonstrate the great extent of the evolutionary diversification of the Madagascan vangas.

Place, publisher, year, edition, pages
2012. Vol. 109, no 17, 6620-5 p.
Keyword [en]
core corvoidea, island endemism, lineage diversification, passeriformes, phylogenetics
National Category
Biological Systematics Evolutionary Biology
Research subject
Diversity of life
Identifiers
URN: urn:nbn:se:nrm:diva-404DOI: 10.1073/pnas.1115835109PubMedID: 22505736OAI: oai:DiVA.org:nrm-404DiVA: diva2:734808
Funder
Swedish Research Council, 621-2010-5321
Available from: 2014-07-21 Created: 2014-07-21 Last updated: 2017-12-05Bibliographically approved

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Ericson, Per G PIrestedt, Martin
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Research DivisionDepartment of Bioinformatics and Genetics
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Proceedings of the National Academy of Sciences of the United States of America
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CiteExportLink to record
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