The resident's dilemma: A female choice model for the evolution of alternative mating strategies in lekking male ruffs (Philomachus pugnax)
The resident's dilemma: A female choice model for the evolution of alternative mating strategies in lekking male ruffs (Philomachus pugnax)
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DOI：
10.1093/beheco/8.2.218
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发表时间：
1997-03-01
影响因子：
2.4
通讯作者：
Lank, DB
中科院分区：
文献类型：
--
作者：
Hugie, DM;Lank, DB
先前关于另类雄性交配行为进化的模型实际上忽略了雌性选择的作用。我们提出了一个模型，其中雌性选择有利于雄性ruffs Philomachus pugnax的替代交配策略的进化和维持。常驻男性领主建立并捍卫列克法庭，对抗其他居民，而非领地卫星男性则在列克之间以及列克法庭之间移动。居民似乎积极招募卫星到他们的宫廷，尽管卫星可能会在到达那里后与雌性交配。居民对卫星的行为和男性行为的数据表明，由于一些女性偏好在共同居住的场地上交配，居民从卫星的存在中受益。然而，如果所有居民都接受卫星，那么没有人会获得任何相对优势，但所有人都会付出在自己的球场上安装卫星的成本。我们提出了一个博弈论模型，该模型表明女性选择的相对性质使居民在卫星接受方面陷入了进化困境。尽管如果可以合作地将卫星排除在leks之外，所有居民都会受益，但对于个体居民来说，唯一的进化稳定策略是背叛并接受卫星。该模型还表明，这种“居民困境”可能只存在于局部意义上，因为居民未能合作地将卫星排除在 leks 之外，并不一定会导致全球收益较低，因为卫星在人口中的比例取决于频率的选择。我们的分析表明，颈圈中的驻地-卫星关系尽管存在明显的竞争因素，但从根本上来说是一种受雌性选择青睐的合作关系。雌性选择也被提议作为选择雄性关联以在领子中形成 leks 的主要机制。在这种情况下，驻地卫星关联可以被认为是暂时的“列克中的列克”。
Previous models for the evolution of alternative male mating behavior have virtually ignored the role of female choice. We present a model in which female choice favors the evolution and maintenance of alternative mating strategies in male ruffs, Philomachus pugnax. Resident male ruffs establish and defend courts on leks against other residents, while non-territorial satellite males move between leks and among courts on a lek. Residents appear to actively recruit satellites to their courts, even though satellites may mate with females once there. Resident behavior toward satellites and data on ft male behavior suggest that residents benefit from a satellite's presence due to some female preference for mating on co-occupied courts. However if all residents accept satellites, none gains any relative advantage, yet all pay the costs of having satellites on their court. We present a game theoretical model that shows that the relative nature of female choice places residents in an evolutionary dilemma with respect to satellite acceptance. Although all residents would benefit if satellites could be cooperatively excluded from leks, the only evolutionarily stable strategy for individual residents is to defect and accept satellites. The model also demonstrates that this ''resident's dilemma'' likely exists only in a local sense, since the failure of residents to cooperatively exclude satellites From leks need not result in globally lower payoffs, due to frequency-dependent selection on the proportion of satellites in the population. Our analysis suggests that the resident-satellite relationship in ruffs, despite its obvious competitive elements, is fundamentally a cooperative association favored by female choice. Female choice has also been proposed as the primary mechanism selecting for male association to form leks in ruffs. In this context, resident-satellite associations may be thought of as transitory ''leks within a lek.''