Genetic and plastic components of divergent male intersexual behavior in Misty lake/stream stickleback
Genetic and plastic components of divergent male intersexual behavior in Misty lake/stream stickleback
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DOI：
10.1093/beheco/arn084
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发表时间：
2008-11-01
影响因子：
2.4
通讯作者：
Hendry, Andrew P.
中科院分区：
文献类型：
--
作者：
Delcourt, Matthieu;Raesaenen, Katja;Hendry, Andrew P.
环境之间交配信号的变化程度可能是生殖隔离的重要决定因素。本文研究了湖泊和溪流三棘鱼（Gasterosteus aculeatus L.）在雾星系，温哥华岛。据推测，基于遗传的分歧进行了评估，通过比较男性的行为（侵略性，显示，和巢活动）之间的湖泊，入口和出口的生态类型，饲养从受精到成熟，在一个共同的环境。塑料成分的行为进行了评估，通过比较男性的行为存在的女性从3个生态型。我们发现，在他们的行为中，入口男性比湖泊和出口男性具有较少的侵略性元素，而湖泊和出口男性的行为相似。我们进一步发现，所有生态型的男性进行较少的显示和巢活动的存在下，湖泊和出口比入口女性和男性交配行为的影响，男性和女性的身体大小的相对差异。我们认为，趋异选择驱动了遗传分化的侵略行为，而其他行为组件的反应更具可塑性的女性表型的变化。我们讨论了这些结果生殖隔离的影响。
The extent of variation in mating signals between environments can be an important determinant of reproductive isolation. We tested divergence in male courtship behavior between lake and stream three-spined stickleback (Gasterosteus aculeatus L.) in the Misty system, Vancouver Island. Presumably, genetically based divergence was assessed by comparing male behavior (aggressive, display, and nest activities) among Lake, Inlet, and Outlet ecotypes that were reared from fertilization to maturity in a common environment. Plastic components of behavior were assessed by comparing male behavior in presence of females from each of the 3 ecotypes. We found that Inlet males had less aggressive elements than Lake and Outlet males in their behavior, whereas Lake and Outlet males were similar in their behavior. We further found that males of all ecotypes performed less display and nest activities in the presence of Lake and Outlet than Inlet females and that the male mating behavior was influenced by the relative difference in male and female body sizes. We suggest that divergent selection has driven genetic divergence in aggressive behaviors, whereas other behavioral components respond more plastically to variation in female phenotype. We discuss the implications of these results for reproductive isolation.