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Male Hatano low-avoidance rats show more active sexual behavior with lower plasma testosterone than high-avoidance rats

机译:雄性波多野低规避大鼠比高规避大鼠表现出更多的活跃性行为血浆睾丸激素降低

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摘要

Two inbred strains of Sprague-Dawley rats, known as the Hatano high- and low-avoidance animals (HAA and LAA respectively), have been selectively bred for high versus low rates of avoidance responses in a shuttle-box avoidance task. To investigate differences in the sexual behavior of Hatano rats, male HAA, LAA and SD rats were tested from 12 to 15 weeks of age. LAA rats exhibited more rapid and frequent sexual behavior than HAA or SD rats, and such differences increased with repeated sexual experience. Plasma testosterone levels tended to be lower in LAA rats than in HAA or SD rats, suggesting that active sexual behavior in LAA rats is not related to these levels. Strain differences in mating behavior between HAA and LAA rats may be caused by emotional responses to novelty.
机译:在梭箱回避任务中,已选择性繁殖了两种Sprague-Dawley大鼠近交系,分别称为Hatano高回避和低回避动物(分别为HAA和LAA),以实现高回避率和低回避率。为了研究Hatano大鼠的性行为差异,对12至15周龄的雄性HAA,LAA和SD大鼠进行了测试。 LAA大鼠比HAA或SD大鼠表现出更快,更频繁的性行为,并且这种差异随着反复的性经历而增加。 LAA大鼠的血浆睾丸激素水平往往低于HAA或SD大鼠,这表明LAA大鼠的活跃性行为与这些水平无关。 HAA和LAA大鼠之间的交配行为中的应变差异可能是由对新奇事物的情绪反应引起的。

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