An unexpectedly long history of sexual selection in birds-of-paradise |
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| Authors: | Martin Irestedt Knud A J?nsson Jon Fjelds? Les Christidis and Per GP Ericson |
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| Institution: | (1) Molecular Systematics Laboratory, Swedish Museum of Natural History, P.O. Box 50007, SE-104 05 Stockholm, Sweden;(2) Vertebrate Department, Zoological Museum, University of Copenhagen, Universitetsparken 15, DK-2100 Copenhagen ?, Denmark;(3) Division of Research and Collections, Australian Museum, 6 College St, Sydney, New South Wales, 2010, Australia;(4) Department of Genetics, University of Melbourne, Parkville, Victoria, 3052, Australia |
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| Abstract: | Background The birds-of-paradise (Paradisaeidae) form one of the most prominent avian examples of sexual selection and show a complex
biogeographical distribution. The family has accordingly been used as a case-study in several significant evolutionary and
biogeographical syntheses. As a robust phylogeny of the birds-of-paradise has been lacking, these hypotheses have been tentative
and difficult to assess. Here we present a well supported species phylogeny with divergence time estimates of the birds-of-paradise.
We use this to assess if the rates of the evolution of sexually selected traits and speciation have been excessively high
within the birds-of-paradise, as well as to re-interpret biogeographical patterns in the group. |
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