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
Variation in alarm calls during different breeding stages of the common kestrel (Falco tinnunculus).
TL;DR: In this article, the authors analyzed the characteristics, plasticity, and impact factors of alarm calls during the reproductive period in raptors and found that the duration and rate of the alarm calls increased significantly as the breeding season progressed, showing that parents spent increasing amounts of time on nest defense.
Journal ArticleDOI
Torrent frogs emit acoustic signals of a narrower spectral range in habitats with longer-lasting biotic background noise
Lucas Rodriguez Forti,Maria Rita de Melo Sampaio,C. R. Pires,Judit K. Szabo,Luís Felipe Toledo +4 more
TL;DR: In this article , the effect of the duration of biotic sounds (intermittent acoustic signals from two syntopic species) on calling properties of a torrent frog species was investigated.
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Rich acoustic landscapes dominated the Mesozoic
TL;DR: Xu et al. as mentioned in this paper showed that the earliest known tympanic ear in insects and their close relatives produced a cacophony of sound that filled the night air, much as they do in in the modern day.
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Behavioral context shapes vocal sequences in two anuran species with different repertoire sizes
TL;DR: In this article, the authors investigated the context-dependent vocal repertoire and the use of vocal sequences by two anuran species belonging to different lineages, both endemic to the hyper-diverse Western Ghats of India.
Posted ContentDOI
No evidence for song evolution influencing speciation patterns in honeyeaters
TL;DR: In this article , the authors employ phylogenetic comparative models of trait evolution to detect shifts in optima for song evolution and use hidden state speciation and extinction models to assess the influence of these shifts on diversification.
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.