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首页> 外文期刊>Ethology >Sexual Differences in the Behavioral Response of Tungara Frogs, Physalaemus pustu/osus, to Cues Associated with Increased Predation Risk
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Sexual Differences in the Behavioral Response of Tungara Frogs, Physalaemus pustu/osus, to Cues Associated with Increased Predation Risk

机译：Tungara青蛙，Phys（Physalaemus pustu / osus）对与增加的捕食风险相关的线索的行为反应的性别差异

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摘要

Engaging in mating behaviors usually increases exposure to predators for both males and females. Anti-predator strategies during reproduction may have important fitness consequences for prey. Previous studies have shown that individuals of several species adjust their reproductive behavior according to their assessment of predation risk, but few studies have explored potential sexual differences in these strategies. In this study, we investigate whether the acoustic cues associated with predatory attacks or those associated with predators themselves affect the mating behavior of female and male tungara frogs, Physalaemus pustuldsus. We compared the responses of females approaching a mate and those of calling males when exposed to mating calls associated with sounds representing increased hazard. When presented with mating calls that differed only in whether or not they were followed by a predation-related sound, females preferentially approached the call without predation-related sounds. In contrast to females, calling males showed greater vocal response to calls associated with increased risk than to a call by itself. We found significant differences in the responses of females and males to several sounds associated with increased hazard. Femalesbehaved more cautiously than males, suggesting that the sexes balance the risk of predation and the cost of cautious mating strategies differently.
机译：参与交配行为通常会增加男性和女性对捕食者的接触。繁殖期间的反捕食者策略可能会对猎物产生重要的适应性后果。先前的研究表明，几种物种的个体会根据对捕食风险的评估来调整其生殖行为，但是很少有研究探讨这些策略中潜在的性别差异。在这项研究中，我们调查与掠食性攻击或与掠食者本身相关的声音提示是否会影响雌性和雄性通古拉青蛙（Physalaemus pustuldsus）的交配行为。我们比较了女性在接近配偶时的反应以及在与交配的声音接触时（与代表危险增加的声音相关）的呼唤男性的反应。当呈现出交配声时，雌性会优先选择没有这种与捕食相关的声音的配偶，只是它们是否带有与捕食相关的声音。与女性相反，呼叫男性对与风险增加相关的呼叫表现出比对自身呼叫更高的声音反应。我们发现女性和男性对与危险增加相关的几种声音的反应存在显着差异。女性比男性更加谨慎，这表明性别在掠夺风险和谨慎交配策略成本之间的平衡有所不同。

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