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首页> 外文期刊>The Journal of Arachnology >Contrasting energetic costs of courtship signaling in two wolf spiders having divergent courtship behaviors
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Contrasting energetic costs of courtship signaling in two wolf spiders having divergent courtship behaviors

机译：在两个具有不同求爱行为的狼蛛中，求爱信号的能量消耗却相反

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摘要

Energetic costs of courtship behavior were measured for two sympatric wolf spiders that are reproductively isolated based on distinct male courtship behaviors with different signaling modes and activity levels: Schizocosa ocreata (Hentz 1844) uses multi-modal communication (visual and seismic signals) and an actively-moving courtship display, whereas S. rovneri (Uetz & Dondale 1979) uses only seismic signals produced while stationary. To test for increased energetic expense of more complex multimodalcourtship in S. ocreata, we recorded peak CO_2 output for male spiders standing, walking, or courting. We found that peak CO_2 output while standing or walking was similar between species. Courtship behavior of S. ocreata produced greater peak CO_2 output than these other behaviors, and was significantly greater than peak CO_2 output of S. rovneri courtship, which was not different from that of locomotion. Hence, unequal energy expenditure related to the modality of the males' courtship displays resulted in different energetic costs for courting male spiders. Male courtship vigor may serve as a criterion for female mate choice in Schizocosa.
机译：根据两只具有不同信号传导方式和活动水平的男性求偶行为以生殖方式隔离的两只同伴狼蛛，测量了求偶行为的能量成本：Schizocosa ocreata（Hentz 1844）使用多模式通信（视觉和地震信号）并主动移动求爱显示，而S. rovneri（Uetz＆Dondale 1979）仅使用静止时产生的地震信号。为了测试S. ocreata中更复杂的多式联运的能量消耗增加，我们记录了雄性蜘蛛站立，行走或求爱时的CO_2峰值输出。我们发现，物种之间站立或行走时的CO_2峰值输出相似。与其他行为相比，S。ocreata的求爱行为产生了更高的CO_2峰值输出，并且显着大于S. rovneri求爱的CO_2峰值输出，这与运动没有什么不同。因此，与雄性求偶显示的方式有关的能量消耗不均等，导致了雄性蜘蛛求爱的精力成本有所不同。男性求爱的活力可以作为在裂殖藻中女性择偶的标准。

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