Does the ring species concept predict vocal variation in the crimson rosella, Platycercus elegans, complex?

Ribot, Raoul F. H., Berg, Mathew L., Buchanan, Katherine L., Komdeur, Jan, Joseph, Leo and Bennett, Andrew T. D. 2009, Does the ring species concept predict vocal variation in the crimson rosella, Platycercus elegans, complex?, Animal behaviour, vol. 77, no. 3, pp. 581-593.

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Title Does the ring species concept predict vocal variation in the crimson rosella, Platycercus elegans, complex?
Author(s) Ribot, Raoul F. H.
Berg, Mathew L.
Buchanan, Katherine L.
Komdeur, Jan
Joseph, Leo
Bennett, Andrew T. D.
Journal name Animal behaviour
Volume number 77
Issue number 3
Start page 581
End page 593
Total pages 13
Publisher Elsevier
Place of publication London, England
Publication date 2009-03
ISSN 0003-3472
1095-8282
Keyword(s) biogeography
vocalization
speciation
ring species
Platycercus elegans
parrot
crimson rosella complex
contact call
Summary Vocal variation may be important in population divergence. We studied geographical variation in contact calls of parrots of the crimson rosella, Platycercus elegans, complex, which is characterized by striking geographical plumage coloration variation. This complex has long been considered a rare example of a ring species (where two divergent forms coexist in sympatry but are connected by a chain of intermediate populations forming a geographical ring). We tested whether contact call variation is consistent with the ring species hypothesis. We recorded calls throughout the ring, including several sites from the three main population groups forming the ring and interfaces between them. We analysed duration, peak frequency, fundamental frequency and frequency modulation. We found significant differences, particularly in fundamental frequency and frequency modulation, at multiple biogeographical scales ranging from local populations to subspecies level. Discriminant function analyses showed some populations could be reliably discriminated from call structure. However, our results provided little support for three key predictions of the ring species hypothesis: (1) calls of the terminal, most divergent forms were not significantly different in three of the four acoustic variables, and differences did not appear to be maintained in sympatry, (2) phenotypically/geographically intermediate populations were not characterized by intermediate calls, and (3) call variation was not concordant with geographical sequence around the ring from one terminal form to the other. Our results underscore the emerging view that the evolutionary histories and phenotypic variability of many long-held ring species may be inadequately described by the ring species hypothesis and require alternative explanations. (C) 2008 The Association for the Study of Animal Behaviour. Published by Elsevier Ltd. All rights reserved.
Language eng
Field of Research 060201 Behavioural Ecology
Socio Economic Objective 960805 Flora, Fauna and Biodiversity at Regional or Larger Scales
HERDC Research category C1 Refereed article in a scholarly journal
Copyright notice ©2008, Elsevier
Persistent URL http://hdl.handle.net/10536/DRO/DU:30022793

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