Hedrick A V, Perez D, Lichti N, Yew J
Neurobiology, Physiology and Behavior, One Shields Avenue, University of California, Davis, Davis, CA 95616, USA.
J Comp Physiol A Neuroethol Sens Neural Behav Physiol. 2002 Nov;188(10):799-805. doi: 10.1007/s00359-002-0368-9. Epub 2002 Nov 12.
Temperature affects the mating displays of many ectothermic animals, yet almost no information exists on the temperature preferences of ectotherms while they are displaying for mates. This study investigated the preferences of displaying male field crickets ( Gryllus integer) for microhabitats of different temperatures. G. integer males attract sexually receptive females by calling from cracks in the ground. We collected data from the field on the temperature of male calling sites (cracks in the ground), on the amount of herbaceous cover (which affects crack temperature) surrounding calling sites, and on the temporal properties of male calls at different temperatures. Laboratory experiments demonstrated that males prefer warmer sites and confirmed that temperature influences mating calls. We conclude that males of this ectothermic species prefer to call for mates from warmer sites, and that microhabitat choice on the basis of temperature affects their mating calls, and potentially their reproductive success.
温度会影响许多变温动物的求偶行为，然而，关于变温动物在向配偶展示时的温度偏好，几乎没有相关信息。本研究调查了正在求偶的雄性田野蟋蟀（Gryllus integer）对不同温度微生境的偏好。G. integer雄性通过在地面裂缝中鸣叫来吸引处于性接受期的雌性。我们在野外收集了关于雄性鸣叫地点（地面裂缝）的温度、鸣叫地点周围草本植物覆盖量（影响裂缝温度）以及不同温度下雄性鸣叫的时间特性的数据。实验室实验表明，雄性更喜欢较温暖的地点，并证实温度会影响求偶鸣叫。我们得出结论，这种变温物种的雄性更喜欢在较温暖的地点鸣叫求偶，并且基于温度的微生境选择会影响它们的求偶鸣叫，进而可能影响它们的繁殖成功率。
