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首页> 外文期刊>The Journal of Experimental Biology >Male sex pheromone release and female mate choice in a butterfly
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Male sex pheromone release and female mate choice in a butterfly

机译：蝴蝶中的男性信息素释放和女性伴侣选择

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In butterflies female mate choice is influenced by both visual and olfactory cues, the latter of which are important at close range. Males of the green-veined butterfly, Pieris napi, are known to release citral (mixture of geranial and neral, 1:1), but its role(s) and conditions of release are not known. Here, we show that male P. napi release citral when interacting with conspecific males, conspecific females, heterospecific males and also when alone. The amount of citral released correlated strongly with male flight activity, which explained more than 70% of the variation. This suggests that males do not exercise control over turning release on or off, but rather that citral is emitted as a passive physical process during flight. Electroantennogram experiments showed that female antennal response was ten times more sensitive to citral than male response. Females expressed acceptance behavior when exposed to models made with freshly excised male wings or those treated with citral following chemical extraction, but not to ones with extracted wings only. Hence, these behavioral and electrophysiological tests provide strong evidence that citral is a signal from the male directed to the female during courtship, and that it functions as a male sex pheromone.
机译：在蝴蝶中，雌性伴侣的选择受视觉和嗅觉提示的影响，后者在近距离时很重要。绿脉蝴蝶的雄性皮利斯·纳皮（Pieris napi）会释放柠檬醛（香叶醛与神经混合物，1：1），但其作用和释放条件尚不清楚。在这里，我们显示当与同种雄性，同种雌性，异种种雄性以及单独接触时，雄性纳皮松释放柠檬醛。柠檬酸的释放量与雄性飞行活动密切相关，这解释了超过70％的变异。这表明雄性不对打开或关闭释放进行控制，而是在飞行过程中将柠檬醛作为被动的物理过程发出。脑电图实验表明，女性触角反应对柠檬醛的敏感性是男性触觉响应的十倍。当雌性接触刚摘下的雄性机翼制成的模型或经柠檬酸化学提取后经柠檬醛处理的模型时，雌性表现出接受行为，但不暴露于仅抽取机翼的模型。因此，这些行为和电生理学测试提供了强有力的证据，表明柠檬醛是求爱过程中从雄性到雌性的信号，并且它起着雄性性信息素的作用。

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