Journal ArticleDOI
Evolutionary divergence in acoustic signals: causes and consequences
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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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La voz de nuestras aves: contribuciones de la bioacústica a la ornitología colombiana
Oscar Laverde-R.,Gustavo Adolfo Hidalgo Bravo,Oscar Humberto Marín-Gómez,Natalia Ocampo-Peñuela +3 more
TL;DR: A revisión sistemática de las investigaciones sobre bioacústica aplicada a la ornitología colombiana in los últimas 22 años, identificando the principales" temáticas that se abordan (e.g., taxonomía, inventarios and monitoreos, comportamiento, ecología), and exploramos the history and the desarrollo of esta herramienta and its impact on the ornitology colombianas as discussed by the authors .
Journal ArticleDOI
Geographical variation of the acoustic signals in the spot-legged treefrog (Polypedates megacephalus) of Hainan Island.
TL;DR: In this article , the authors evaluated call similarity of the spot-legged treefrog (Polypedates megacephalus), characterized by multiple call types, from 11 geographic populations across Hainan Island.
Journal ArticleDOI
Modeling how population size drives the evolution of birdsong, a functional cultural trait
Emily J. Hudson,Nicole Creanza +1 more
TL;DR: This work modifications a model of human tool evolution to accommodate cultural evolution of birdsong, suggesting that larger populations of birds could foster improvements in song over time, even when learners restrict their pool of tutors to a subset of individuals in their social network.
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Morphometric analyses of sexual dimorphism in sound-emitting structures in adults of the bess beetle Vindex agnoscendus (Coleoptera: Passalidae).
E. R. Ariza-Marín,Efraín De Luna +1 more
TL;DR: In this paper , the authors performed traditional and geometric morphometric analyses to test for sexual differences in the spines of three zones (Z1-Z3) of the plectrum.
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.