The effects of predation risk on female silk deposition and male response to predator-cued conspecifics in the wolf spider, Pardosa milvina (Araneae: Lycosidae)
The effects of predation risk on female silk deposition and male response to predator-cued conspecifics in the wolf spider, Pardosa milvina (Araneae: Lycosidae)
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捕食风险对狼蛛（蜘蛛科：狼蛛科）雌性丝沉积和雄性对捕食者提示同种的反应的影响
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发表时间：
2010
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影响因子：
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通讯作者：
M. Persons
中科院分区：
文献类型：
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作者：
Alexander L. Sweger;M. Marr;Adam C. Satteson;A. Rypstra;M. Persons
摘要雌性豹蛛（Pardosa millions）（Hentz 1844）狼蛛通过蛛丝向雄性表达性接受，雄性豹蛛在遇到雌性蛛丝时表现出明显的求偶行为。以前的研究表明，雌性白蛉可能会受益于限制丝绸广告和排泄物沉积时，遇到来自捕食者，H。helluo和男性P.milliande可能会表现出相应的减少求偶时，遇到丝从同种女性以前暴露于H。丝绸。我们通过比较暴露或未暴露于来自H.你好。我们还测量和比较了雄性P.milliands求偶潜伏期和强度的存在下，丝从女性先前暴露或未暴露于捕食者丝从H。你好。与预测相反，我们发现雌性暴露于H后排泄物、拖丝和附着盘沉积显著增加。你好提示。男性P. millions求爱潜伏期没有变化，尽管增加了女性的丝绸沉积治疗，但男性显着降低求爱强度时，暴露于丝绸从女性捕食风险。垂直攀爬以逃避捕食者的线索可能会导致增加女性的丝绸沉积。
Abstract Female Pardosa milvina (Hentz 1844) wolf spiders advertise sexual receptivity toward males via silk draglines, and male P. milvina exhibit conspicuous courtship behavior when encountering silk from females. Previous studies suggest that female P. milvina may benefit by limiting silk advertisements and excreta deposition when encountering silk from the predator, H. helluo, and male P. milvina may exhibit corresponding reductions in courtship when encountering silk from conspecific females previously exposed to H. helluo silk. We tested these predictions by comparing the amount of silk and excreta deposited by unmated female P. milvina exposed or not exposed to predator cues (silk and excreta) from H. helluo. We also measured and compared male P. milvina courtship latency and intensity in the presence of silk from females previously exposed or not exposed to predator silk from H. helluo. Contrary to predictions, we found a significant increase in excreta, dragline, and attachment disk deposition after females were exposed to H. helluo cues. Male P. milvina courtship latency did not vary among treatments despite increases in female silk deposition, but males significantly decreased courtship intensity when exposed to silk from females under predation risk. Vertical climbing to escape the predator cues may cause an increase in female silk deposition.