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首页> 外文期刊>Journal of Chemical Ecology: Official Journal of the International Society of Chemical Ecology >Low Temperature Dormancy Affects the Quantity and Quality of the Female Sexual Attractiveness Pheromone in Red-sided Garter Snakes
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Low Temperature Dormancy Affects the Quantity and Quality of the Female Sexual Attractiveness Pheromone in Red-sided Garter Snakes

机译：低温休眠影响红边袜蛇中女性性吸引信息素的数量和质量

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摘要

Low temperature dormancy is a necessary requirement of the annual cycle of most nonmigratory, temperate vertebrates. The red-sided garter snake, Thamnophis sirtalis parietalis, overwinters in communal dens during its prolonged winter dormancy (8 mo), and upon emergence, reproductive behavior of both sexes is maximal. Previous work on this species showed that male courtship behavior is maximally induced after simulated low temperature dormancy. The purpose of this study was to determine whether low temperature dormancy affects the pheromone profiles of individual female red-sided garter snakes. We collected females in the fall at den sites in Manitoba, Canada, and extracted pheromones from individuals at three different time points: fall (field), winter (lab), and spring (lab). Total skin lipid and pheromone fraction masses increased from fall to spring, and pheromone profiles were distinctly different in the fall and spring. Pheromone profiles became dominated by the long-chain, unsaturated methyl ketone components of the blend by the time snakes emerged in the spring. Further, the amounts of both saturated and unsaturated components increased from fall to spring, suggesting significant sex pheromone synthesis was induced by low temperature dormancy.
机译：低温休眠是大多数非迁徙，温带脊椎动物的年度循环的必要条件。红袜带蛇，Thamnophis sirtalis parietalis，在冬季休眠期（8 mo）期间在公共巢穴越冬，一旦出现，两性的生殖行为最大。先前对该物种的研究表明，在模拟的低温休眠之后，男性的求爱行为被最大程度地诱导。这项研究的目的是确定低温休眠是否影响个别雌性红袜带蛇的信息素特征。我们在秋天收集了加拿大马尼托巴省巢穴中的雌性，并在三个不同的时间点从个体中提取了信息素：秋天（田野），冬天（实验室）和春天（实验室）。从秋季到春季，总的皮肤脂质和信息素组分的质量增加，并且在秋季和春季，信息素的特征明显不同。当蛇在春天出现时，信息素的轮廓开始被混合物中的长链不饱和甲基酮成分所控制。此外，从秋天到春季，饱和和不饱和成分的数量均增加，这表明低温休眠可诱导大量的性信息素合成。

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