Journal ArticleDOI
Evolutionary divergence in acoustic signals: causes and consequences
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TLDR
A conceptual framework for testing the relative significance of both adaptive and neutral mechanisms leading to acoustic divergence is summarized, predictions for cases where these processes lead to speciation are predicted, and how their relative importance plays out over evolutionary time are summarized.Abstract:
Acoustic signals mediate mate choice, resource defense, and species recognition in a broad range of taxa. It has been proposed, therefore, that divergence in acoustic signals plays a key role in speciation. Nonetheless, the processes driving divergence of acoustic traits and their consequences in terms of speciation are poorly understood. A review of empirical and comparative studies reveals strong support for a role of sexual selection in acoustic divergence, but the possible concomitant influences of ecological context are rarely examined. We summarize a conceptual framework for testing the relative significance of both adaptive and neutral mechanisms leading to acoustic divergence, predictions for cases where these processes lead to speciation, and how their relative importance plays out over evolutionary time.read more
Citations
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Journal ArticleDOI
Sexual selection predicts the rate and direction of colour divergence in a large avian radiation.
Christopher R. Cooney,Zoë K. Varley,Lara O. Nouri,Lara O. Nouri,Christopher J. A. Moody,Michael D Jardine,Michael D Jardine,Gavin H. Thomas,Gavin H. Thomas +8 more
TL;DR: It is found that differences in the rate and direction of plumage colour evolution are predicted by a proxy for sexual selection intensity (plumage dichromatism) in a large radiation of suboscine passerine birds (Tyrannida).
Journal ArticleDOI
Language evolution and climate: the case of desiccation and tone
TL;DR: It is suggested that the time has come to more substantively examine the possibility that linguistic sound systems are adapted to their physical ecology, and new approaches being developed to further explore the hypothesis are discussed.
Journal ArticleDOI
Female mate choice can drive the evolution of high frequency echolocation in bats: a case study with Rhinolophus mehelyi.
Sébastien J. Puechmaille,Ivailo M. Borissov,Sándor Zsebök,Benjamin Allegrini,Mohammed Hizem,Sven Kuenzel,Maike Schuchmann,Emma C. Teeling,Björn Martin Siemers +8 more
TL;DR: Here it is demonstrated for the first time using a novel combined behavioural, ecological and genetic approach that in a bat species, Rhinolophus mehelyi, echolocation peak frequency is an honest signal of body size and females preferentially select males with high frequency calls during the mating season, providing evidence that eCholocation calls may play a role in female mate choice.
Female mate choice can drive the evolution of high frequency echolocation
Sébastien J. Puechmaille,Ivailo M. Borissov,Sándor Zsebök,Benjamin Allegrini,M. Hizem,Sven Kuenzel,Maike Schuchmann,Emma C. Teeling,Björn Martin Siemers +8 more
TL;DR: In this article, the authors used a combined behavioral, ecological and genetic approach to demonstrate that in a bat species, Rhinolophus mehelyi, echolocation peak frequency is an honest signal of body size and females preferentially select males with high frequency calls during the mating season.
Journal ArticleDOI
Behavioural response to song and genetic divergence in two subspecies of white-crowned sparrows (Zonotrichia leucophrys).
Sara E. Lipshutz,Isaac Overcast,Michael J. Hickerson,Michael J. Hickerson,Michael J. Hickerson,Robb T. Brumfield,Elizabeth P. Derryberry,Elizabeth P. Derryberry +7 more
TL;DR: It is found that song acts as a reproductive isolating mechanism that is potentially weakening in a contact zone between two subspecies of white‐crowned sparrows, supporting the hypothesis that intraspecific song variation can reduce gene flow between populations.
References
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Journal ArticleDOI
Signals, signal conditions, and the direction of evolution
TL;DR: Sensory systems, signals, signaling behavior, and habitat choice are evolutionarily coupled and should coevolve in predictable directions, determined by environmental biophysics, neurobiology, and the genetics of the suites of traits.
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Sexual selection, social competition, and speciation
TL;DR: Patterns of variation in socially selected characters demonstrate the wisdom of Darwin's distinction between natural and sexual selection, and the applicability of sexual selection theory to social competition in general.
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Ecological Sources of Selection on Avian Sounds
TL;DR: In this article, sound propagation tests were made in forest, edge, and grassland habitats in Panama to quantify pure tone and random noise band sound transmission levels, and the sounds of birds in each habitat were analyzed to determine the emphasized frequency, frequency range, and sound type (whether pure tonelike or highly modulated).
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Evidence for Ecological Speciation and Its Alternative
TL;DR: Tests of parallel evolution of reproductive isolation, trait-based assortative mating, and reproductive isolation by active selection have demonstrated that ecological speciation is a common means by which new species arise.
Journal ArticleDOI
Public information: from nosy neighbors to cultural evolution.
TL;DR: A large body of evidence suggests that human decision-making is strongly influenced by the behavior of others, which may then affect biological evolution.