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A Macroevolutionary Perspective on Multiple Sexual Traits in the Phasianidae (Galliformes)
Joint Authors
Mary, Colette M. St.
Kimball, Rebecca T.
Braun, Edward L.
Source
International Journal of Evolutionary Biology
Issue
Vol. 2011, Issue 2011 (31 Dec. 2011), pp.1-16, 16 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2011-05-02
Country of Publication
Egypt
No. of Pages
16
Main Subjects
Abstract EN
Traits involved in sexual signaling are ubiquitous among animals.
Although a single trait appears sufficient to convey information, many sexually dimorphic species exhibit multiple sexual signals, which may be costly to signalers and receivers.
Given that one signal may be enough, there are many microevolutionary hypotheses to explain the evolution of multiple signals.
Here we extend these hypotheses to a macroevolutionary scale and compare those predictions to the patterns of gains and losses of sexual dimorphism in pheasants and partridges.
Among nine dimorphic characters, including six intersexual signals and three indicators of competitive ability, all exhibited both gains and losses of dimorphism within the group.
Although theories of intersexual selection emphasize gain and elaboration, those six characters exhibited greater rates of loss than gain; in contrast, the competitive traits showed a slight bias towards gains.
The available models, when examined in a macroevolutionary framework, did not yield unique predictions, making it difficult to distinguish among them.
Even with this limitation, when the predictions of these alternative models were compared with the heterogeneous patterns of evolution of dimorphism in phasianids, it is clear that many different selective processes have been involved in the evolution of sexual signals in this group.
American Psychological Association (APA)
Kimball, Rebecca T.& Mary, Colette M. St.& Braun, Edward L.. 2011. A Macroevolutionary Perspective on Multiple Sexual Traits in the Phasianidae (Galliformes). International Journal of Evolutionary Biology،Vol. 2011, no. 2011, pp.1-16.
https://search.emarefa.net/detail/BIM-471054
Modern Language Association (MLA)
Kimball, Rebecca T.…[et al.]. A Macroevolutionary Perspective on Multiple Sexual Traits in the Phasianidae (Galliformes). International Journal of Evolutionary Biology No. 2011 (2011), pp.1-16.
https://search.emarefa.net/detail/BIM-471054
American Medical Association (AMA)
Kimball, Rebecca T.& Mary, Colette M. St.& Braun, Edward L.. A Macroevolutionary Perspective on Multiple Sexual Traits in the Phasianidae (Galliformes). International Journal of Evolutionary Biology. 2011. Vol. 2011, no. 2011, pp.1-16.
https://search.emarefa.net/detail/BIM-471054
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-471054