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
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Intraspecific variation in advertisement call characteristics and acoustic strategies among male forest green tree frogs
TL;DR: In this article , the authors conducted playback experiments on the male forest green tree frog (Zhangixalus arboreus) to determine whether male advertisement call characteristics and strategies vary according to body size and the amplitude of intraspecific chorus noise.
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Bioacoustic variation in Wren Troglodytes troglodytes populations on Welsh islands
TL;DR: Differences in song duration and frequency do not directly suggest a trend associated with selective pressures such as habitat or noise, but instead may be explained by non-selective drivers such as cultural drift or local dialect formation.
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Whistle Variation in Indo-Pacific Humpback Dolphins (Sousa chinensis) in Relation to Behavioural and Environmental Parameters in Northwestern Peninsular Malaysia
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Strange Tunes—Acoustic Variation and Character Displacement in a Tarsier Hybrid Zone
Yvonne Eva-Maria Barbara Bohr,Azhari Purbatrapsila,Dyah Perwitasari-Farajallah,Jörg U. Ganzhorn,Stefan Merker +4 more
TL;DR: In this paper , the authors analyzed 55 duet songs from within and outside the hybrid zone of Sulawesi tarsiers Tarsius dentatus and T. lariang and found that intermediate song traits indicate inheritance and may disadvantage hybrids during mate choice.
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Community Bioacoustics: Studying Acoustic Community Structure for Ecological and Conservation Insights
TL;DR: In this paper, the authors lay out how community bioacoustics (the study of acoustic community structure and dynamics), has value in ecological monitoring and conservation of diverse landscapes and taxa.
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.
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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.