THE EFFECT OF PERCEIVED PREDATION RISK ON MALE COURTSHIP AND COPULATORY BEHAVIOR IN THE WOLF SPIDER PARDOSA MILVINA (ARANEAE, LYCOSIDAE)
THE EFFECT OF PERCEIVED PREDATION RISK ON MALE COURTSHIP AND COPULATORY BEHAVIOR IN THE WOLF SPIDER PARDOSA MILVINA (ARANEAE, LYCOSIDAE)
复制标题
感知捕食风险对米尔维纳狼蛛（蜘蛛科、狼科）雄性求爱和交配行为的影响
DOI：
10.1636/s03-59
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发表时间：
2005
期刊：
影响因子：
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通讯作者：
A. Rypstra
中科院分区：
文献类型：
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作者：
Abraham R. Taylor;M. Persons;A. Rypstra
摘要狼蛛Pardosa million（Hentz 1844）在一种较大的狼蛛Hogna helluo（Walckenaer 1837）的趋化性线索（丝和排泄物）的存在下表现出有效的抗捕食反应。我们研究了这些基质传播的线索对雄性P. milliands求偶和交配行为的影响。将41对成年处女雄性和雌性P. milliands放置在有或没有丝的基质上，并从成年雌性H.你好。使用行为观察软件（Noldus Observer® 4.1），我们记录了直到求偶的时间、求偶持续时间和强度（腿抬起和身体摇晃率）。我们还测量了交配的总数，每次交配的持续时间，以及成功和失败的触须插入的数量和比率。虽然我们发现在交配成功率，求爱强度或持续时间的治疗之间没有差异，有显着增加的时间，直到求爱和显着降低的触须插入率捕食风险。男性的捕食风险也有显着更多的失败的触须插入比男性没有风险。结果表明，捕食风险有一个相对较小的影响，求偶显示和交配成功，但可能会影响配偶搜索，精子转移效率，或交配求偶。
Abstract The wolf spider, Pardosa milvina (Hentz 1844), shows effective antipredator responses in the presence of chemotactile cues (silk and excreta) from a larger wolf spider, Hogna helluo (Walckenaer 1837). We examined the influence of these substratum-borne cues on male P. milvina courtship and copulatory behavior. Forty-one pairs of adult virgin male and female P. milvina were placed on substrates with or without silk and excreta from an adult female H. helluo. Using behavioral observation software (Noldus Observer® 4.1), we recorded time until courtship, courtship duration, and intensity (leg raise and body shake rates). We also measured the total number of matings, the duration of each mating, and the number and rate of successful and failed palpal insertions. While we found no difference between treatments in mating success, courtship intensity or duration, there were significant increases in time until courtship and significant decreases in palpal insertion rates under predation risk. Males under predation risk also had significantly more failed palpal insertions than males not under risk. Results suggest that predation risk has a relatively minor impact on courtship displays and mating success, but could potentially impact mate searching, sperm transfer efficiency, or copulatory courtship.