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首页> 外文期刊>Behavioral Ecology >Rival presence leads to reversible changes in male mate choice of aTI Rival presence leads to reversible changes in male mate choice of a desert dwelling ungulate
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Rival presence leads to reversible changes in male mate choice of aTI Rival presence leads to reversible changes in male mate choice of a desert dwelling ungulate

机译：竞争对手的存在导致aTI的男性伴侣选择的可逆变化竞争对手的存在导致aTI的男性伴侣选择的可逆变化

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Gregarious animals often face the problem of unintended interception of information by group members, as almost all communicatory interactions occur in a public domain. For example, individuals may observe and copy the choices of others. Male mate choice copying in species with internal fertilization remains a conundrum, as both the copying and the copied male incur increased sperm competition risk (SCR), and males are predicted to evolve strategies to reduce SCR. Specifically, males that are at imminent risk of being copied should cease expressing mating preferences. In this study, we gave male sand gazelles (Gazella marica) an opportunity to choose between 2 stimulus females in a 24-h association preference test, then repeated testing for another 24 h either while an audience male was presented close to the focal male's compartment or without an audience (control treatment). Overall, focal males were highly consistent in their choices between day 1 and day 2. However, after the audience was presented, they showed a distinct short-term response that lasted for approximately 1 h: focal males altered their preferences, that is, interacted more equally with the 2 females and even tended to spend more time near the initially nonpreferred female. We discuss this effect as a counterstrategy of resident males to reduce SCR arising when new males join the group. In our experiment, habituation to the continued presence of a rival that was experimentally prevented from approaching females may be responsible for why focal males returned to express mating preferences some time after the audience was presented.
机译：群居动物经常面临小组成员意外拦截信息的问题，因为几乎所有的交流互动都是在公共领域发生的。例如，个人可能会观察并复制他人的选择。通过内部受精的物种进行雄性配偶选择复制仍然是一个难题，因为复制和复制的雄性都会增加精子竞争风险（SCR），并且据预测，雄性会制定降低SCR的策略。特别是，有被复制的迫在眉睫的雄性应停止表达交配偏好。在这项研究中，我们给了雄性瞪羚（Gazella marica）一个机会，在24小时的关联偏好测试中从2个刺激性雌性中进行选择，然后再重复测试24小时，或者在靠近焦点雄性室的情况下展示一个受众雄性或没有观众（对照治疗）。总体而言，在第一天到第二天之间，专注男性的选择高度一致。但是，在听众发言后，他们表现出了持续约1小时的独特短期反应：专注男性改变了他们的偏好，即互动与2个雌性更平等，甚至倾向于在最初不受欢迎的雌性附近花费更多的时间。我们将这种效果作为居民男性的策略进行讨论，以减少新男性加入该群体时产生的SCR。在我们的实验中，习惯性地阻止了竞争对手不断逼近的雌性，这可能是为什么在观众出现后的某个时间焦点雄性返回表达对交配偏好的原因。

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