DISSERTATION RESEARCH: Pre-Copulatory Reproductive Cannibalism: The Ecology of an Extreme Reproductive Conflict

论文研究：交配前生殖同类相食：极端生殖冲突的生态学

基本信息

批准号：
0206237
负责人：
David Westneat
金额：
$ 0.96万
依托单位：
University of Kentucky Research Foundation
依托单位国家：
美国
项目类别：
Standard Grant
财政年份：
2002
资助国家：
美国
起止时间：
2002-04-01 至 2004-03-31
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=0206237&HistoricalAwards=false
关键词：
DISSERTATION RESEARCH Pre Copulatory Reproductive

项目摘要

DISSERTATION RESEARCH: Pre-copulatory reproductive cannibalism: the ecology of an extreme reproductive conflictDavid F. WestneatJames Chadwick JohnsonReproductive cannibalism, specifically female consumption of the male prior to, during, or immediately following copulation, occurs in several organisms and is a dramatic example of how ecology can shape behavior. Of particular interest are species exhibiting pre-copulatory reproductive cannibalism, or predation of the male by the female during courtship but prior to sperm transfer. In such cases, the costs of the behavior to males (death) and females (loss of a mate) are readily apparent. In contrast, the benefits of pre-copulatory reproductive cannibalism remain poorly understood. This research program is designed to uncover the functional significance of pre-copulatory reproductive cannibalism in the North American fishing spider (Dolomedes triton). Four hypotheses for pre-copulatory reproductive cannibalism will be tested. First, males may be a source of food for the predatory, adult female. Second, female attacks of males before mating may be an extreme form of mate rejection behavior. Third, pre-copulatory attacks may be the incidental by-product of selection for highly voracious predatory behavior in a multitude of other contexts. Finally, pre-copulatory attacks may occur because males simulate prey items in order to attract the female's attention. If these attacks fail sufficiently often, then such males may mate more often than males who court females in a less risky fashion. The study will thus enhance our understanding of how ecology influences the evolution of extreme behavior between the sexes.

论文研究：化学前生殖食人群：极端生殖的冲突F. Westneatjames Chadwick Johdwick Johnsonreproptivative Cannibalism，特别是女性对男性在几种生物体中的戏剧性典范，是男性在交配之前，之中或立即发生的戏剧性例子，并且是生态学的戏剧性例子。特别令人感兴趣的是表现出吞噬前生殖的食人族主义的物种，或者在求爱过程中却被女性捕食，但在精子转移之前。在这种情况下，男性（死亡）和女性（伴侣失去）行为的成本很明显。相比之下，填充前生殖的食人族的好处仍然很少理解。该研究计划旨在揭示北美捕鱼蜘蛛（Dolomedes Triton）中伪造前生殖食人的功能意义。将检验四个用于吞噬前生殖的假设。首先，雄性可能是掠食性成年女性的食物来源。其次，在交配前对男性的攻击可能是伴侣拒绝行为的一种极端形式。第三，在众多其他情况下，选择前攻击可能是高度贪婪的掠夺性行为的偶然副产品。最后，可能会发生术前攻击，因为男性模拟猎物物品以吸引女性的注意力。如果这些攻击经常发生足够多的失败，那么这种男性可能比以风险较小的女性为女性更频繁地交配。因此，该研究将增强我们对生态学如何影响性别之间极端行为演变的理解。