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首页> 外文期刊>Naturwissenschaften >Anatomic and acoustic sexual dimorphism in the sound emission system of Phoenicoprocta capistrata (Lepidoptera: Arctiidae)
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Anatomic and acoustic sexual dimorphism in the sound emission system of Phoenicoprocta capistrata (Lepidoptera: Arctiidae)

机译：凤蝶（Phoenicoprocta capistrata）（鳞翅目：Arc科）的声音发射系统中的解剖学和听觉性二态性

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Both sexes of Phoenicoprocta capistrata have functional tymbals. The scanning electron microscopy revealed differences in the morphology of these organs in males and females. Male tymbals have a well-developed striated band, constituted by 21 ± 2 regularly arranged striae whereas female tymbals lack a striated band. This type of sexual dimorphism is rare in Arctiidae. The recording of the sound produced by moths held by the wings revealed that while males produced trains of pulses organized in modulation cycles, females produced clicks at low repetition rate following very irregular patterns. Statistically, there are differences between sexes in terms of the duration of pulses, which were 355 ± 24 μs in the case of males and 289 ± 29 μs for females. The spectral characteristics of the pulses also show sexual dimorphism. Male pulses are more tuned (Q 10 = 5.2 ± 0.5) than female pulses (Q 10 = 2.7 ± 0.5) and have a higher best frequency (42 ± 1 kHz vs. 29 ± 2 kHz). To our knowledge, this is the first report on an arctiid moth showing sexual dimorphism in tymbal’s anatomy that leads to a best frequency dimorphism. Males produce sound at mating attempts. The sounds recorded during mating are modulation cycles with the same spectral characteristics as those recorded when males are held by the wings. The morphological and acoustic features of female tymbals could indicate a process of degeneration and adaptation to conditions under which the emission of complex patterns is not necessary. Keywords Arctiidae - Phoenicoprocta - Sexual dimorphism - Tymbal - Sound emission Frank Coro no longer works at Universidad de La Habana.
机译：Phoenicoprocta capistrata的两性都有功能性。扫描电子显微镜揭示了男性和女性这些器官的形态差异。雄性ty具有发达的横纹带，由21±2条规则排列的条纹构成，而雌性lack缺乏横纹带。这种类型的两性畸形在Arctiidae中很少见。机翼上握住的飞蛾产生的声音的记录表明，虽然雄性产生调制周期内组织的脉冲序列，但雌性却以非常不规则的模式以低重复频率产生喀哒声。统计学上，在脉冲持续时间方面，性别之间存在差异，男性为355±24μs，女性为289±29μs。脉冲的光谱特征也显示出性二态性。男性脉冲（Q 10 = 5.2±0.5）比女性脉冲（Q 10 = 2.7±0.5）更加调谐，并且具有更高的最佳频率（42±1 kHz vs 29±2 kHz）。据我们所知，这是第一篇关于弧形蛾的报告，显示出肌解剖结构中的性二态性导致最佳的频率二态性。雄性在交配时发出声音。交配过程中记录的声音是调制周期，具有与雄性抓住机翼时记录的相同的频谱特征。雌性的形态和声学特征可能表明变性和适应条件的过程，在此条件下无需发出复杂的图案。关键字Arctiidae-Phoenicoprocta-性二态性-廷巴-声音发射Frank Coro在La Habana大学不再工作。

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