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Evolution ofsynchronies in insectchoruses Michael D. GreenfieldThibaut Marin-CudrazVirginie Party2017 год

Evolution of synchronies in insect choruses
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Страница публикацииПубликация в OpenAlex
Аннотация: In many acoustic insects, neighbouring males adjust their calling rhythms and broadcast a temporally structured chorus ranging from an irregular mixture of alternation and synchrony to a nearly perfect synchrony wherein most males sing in unison. Irregular synchrony can arise where females ignore calls that follow a neighbour's call by a brief delay, a perception that selects for competitive male adjustments to calling rhythm that increase leading calls and ultimately yield alternation and synchrony. Such chorusing emerges as an incidental property, and the collective temporal structure may have little significance for females and males. More perfect synchronies are expected where females must perceive distinct sound envelopes before approaching a chorus or a given male. Here, selection will favour cooperative male adjustments by which neighbours align their calls, as any male who does not adjust would reduce the group's attractiveness and therefore his own. We tested these expectations in two sympatric bushcrickets, Ephippiger diurnus and Sorapagus catalaunicus, that exhibit irregular and more perfect synchrony, respectively. We found, however, that females in both species prefer leading calls and must hear distinct sound envelopes. We infer that fundamental differences in perception and singing influence the relative importance of competition and cooperation, producing the two synchronies.
Год издания: 2017
Авторы: Michael D. Greenfield, Thibaut Marin-Cudraz, Virginie Party
Издательство: Oxford University Press
Источник: Biological Journal of the Linnean Society
Ключевые слова: Plant and animal studies, Insect and Arachnid Ecology and Behavior, Animal Behavior and Reproduction
Другие ссылки: Biological Journal of the Linnean Society (HTML)
HAL (Le Centre pour la Communication Scientifique Directe) (HTML)
HAL (Le Centre pour la Communication Scientifique Directe) (HTML)