MATING FREQUENCY IN SCHIZOCOSA OCREATA (HENTZ) WOLF SPIDERS: EVIDENCE FOR A MATING SYSTEM WITH FEMALE MONANDRY AND MALE POLYGYNY
MATING FREQUENCY IN SCHIZOCOSA OCREATA (HENTZ) WOLF SPIDERS: EVIDENCE FOR A MATING SYSTEM WITH FEMALE MONANDRY AND MALE POLYGYNY
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DOI：
10.1636/s02-72
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发表时间：
2005-04
期刊：
影响因子：
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通讯作者：
S. Norton;G. Uetz
中科院分区：
文献类型：
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作者：
S. Norton;G. Uetz
摘要对裂殖蛛Schizocosa ocreata（Hentz）的求偶行为进行了广泛的研究。虽然许多研究已经验证了性选择理论对男性特征和女性择偶的预测，但一些关于女性行为的关键假设仍然没有得到验证。为了确定雌性交配是否超过一次，以及交配在多大程度上影响随后的雌性交配，进行了多次交配实验。在实验室容器中，将处女雌性与雄性随机配对。如果发生交配，雌性在24小时内、3天后或30天后（足够产生卵囊的时间）与第二只雄性配对。在测试的101只雌性中，83只（82%）与它们遇到的第一只雄性交配。女性交配的概率第一次是不受女性的大小，男性的大小，或男性的年龄，但与女性年龄后成熟显着变化。在18只未能交配的雄性中，有3只被吃掉。在83只交配的雄性中，有12只在交配后被吃掉。重新交配处理（1天，3天和30天）之间没有差异，汇总数据的分析显示，处女和交配的女性接受男性的比例有非常显著的差异;大多数女性只交配一次（93%）。与此相反，男性似乎法院和尝试交配遇到的每一个女性（处女和交配），大多数男性与一个以上的处女女性交配一次以上（64.5%）。结果表明，雌性S.在讨论两性之间潜在的利益冲突时，会提到有卵的雌性基本上是一雄制的，而雄性是一夫多妻制的。
Abstract Courtship behavior has been studied extensively in the wolf spider Schizocosa ocreata (Hentz) (Araneae, Lycosidae). While much research has tested predictions of sexual selection theory regarding male traits and female mate choice, some critical assumptions about female behavior remain untested. To determine if females mate more than once, and to what degree copulation influences subsequent female mating, a multiple mating experiment was conducted. Virgin females were paired randomly with males in laboratory containers. If mating occurred, females were paired with a second male within 24 hr, after 3 days, or after 30 days (enough time for an egg sac to be produced). Of the 101 females tested, 83 (82%) mated with the first male they encountered. The probability of a female mating the first time was not influenced by female size, male size, or male age, but varied significantly with female age post-maturity. Of the 18 males that failed to mate, 3 were cannibalized. Of the 83 males that did mate, 12 were cannibalized after mating. There was no difference between re-mating treatments (1 d, 3 d and 30 d), and analysis of pooled data showed a highly significant difference in the proportion of virgin and mated females accepting males; most females mated only once (93%). In contrast, males appeared to court and attempt mating with every female encountered (virgin and mated), and a majority of males paired with more than one virgin female mated more than once (64.5%). Results suggest that female S. ocreata are essentially monandrous, while males are polygynous, and are discussed in the context of potential conflicts-of-interest between the sexes.