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The evolution of mimicry of friarbirds by orioles (Aves: Passeriformes) in Australo-Pacific archipelagos
Stockholm University, Faculty of Science, Department of Zoology, Systematic Zoology. Swedish Museum of Natural History.
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2016 (English)In: Proceedings of the Royal Society of London. Biological Sciences, ISSN 0962-8452, E-ISSN 1471-2954, Vol. 283, 20160409Article in journal (Refereed) Published
Abstract [en]

Observations by Alfred Wallace and Jared Diamond of plumage similaritiesbetween co-occurring orioles (Oriolus) and friarbirds (Philemon) in the Malayarchipelago led them to conclude that the former represent visual mimics ofthe latter. Here, we use molecular phylogenies and plumage reflectancemeasurements to test several key predictions of the mimicry hypothesis. Weshow that friarbirds originated before brown orioles, that the two groupsdid not co-speciate, although there is one plausible instance of co-speciationamong species on the neighbouring Moluccan islands of Buru and Seram.Furthermore, we show that greater size disparity between model and mimicand a longer history of co-occurrence have resulted in a stronger plumage similarity(mimicry). This suggests that resemblance between orioles and friarbirdsrepresents mimicry and that colonization of islands by brown orioles has beenfacilitated by their ability to mimic the aggressive friarbirds.

Place, publisher, year, edition, pages
2016. Vol. 283, 20160409
National Category
Evolutionary Biology Biological Systematics
Research subject
Systematic Zoology
URN: urn:nbn:se:su:diva-135756DOI: 10.1098/rspb.2016.0409OAI: diva2:1048692
Swedish Research Council, 621-2014-5113Swedish Research Council, 621-2013-561
Available from: 2016-11-21 Created: 2016-11-21 Last updated: 2016-11-21

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Sangster, George
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