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Aggression and Mating Behavior in Wild and Captive Populations of the House Cricket, Acheta domesticus
Journal of Insect Behavior ( IF 1.0 ) Pub Date : 2019-03-01 , DOI: 10.1007/s10905-019-09715-y
Rachel Olzer , Nicola Deak , Xinci Tan , Justa L. Heinen-Kay , Marlene Zuk

Animals in captivity experience drastically different selective pressures than their wild counterparts. This can cause evolutionary divergence in behavior between captive and wild populations. While most research on evolution under captivity has focused on vertebrates, we expect similar behavioral changes in insects that live and breed in commercial facilities. Using the common house cricket, Acheta domesticus, we tested how crickets reared in captivity for many generations differed from wild-caught counterparts in two aspects of social behavior: male aggression and female responsiveness to male calling song. Acheta domesticus is an important model organism for behavioral research and are often reared in dense, commercial facilities with ad-libitum access to food and no risk of mortality from predators— very different conditions from the wild. We predicted that commercially-derived males would exhibit less intrasexual aggression due to selection from living in dense conditions. We predicted that commercially-derived females would be less responsive to male calling song because they are more likely to encounter many males at random. Instead, we found that commercially-derived males were more aggressive than wild ones, and that commercially-derived and wild females did not differ in responsiveness to calling song. Insects serve as model systems for a great deal of research in evolutionary and behavioral biology. If these animals are evolving in captivity, they may not provide an accurate representation of the natural phenomena we aim to understand.

中文翻译:

家蟋蟀野生和圈养种群的攻击和交配行为,Achetadomesticus

圈养动物所经历的选择压力与野生动物截然不同。这可能导致圈养种群和野生种群之间行为的进化差异。虽然大多数圈养进化研究都集中在脊椎动物身上,但我们预计在商业设施中生活和繁殖的昆虫也会发生类似的行为变化。使用常见的家蟋蟀,Achetadomesticus,我们测试了在圈养下饲养多代蟋蟀与野生蟋蟀在社会行为的两个方面有何不同:雄性攻击性和雌性对雄性鸣叫的反应。Achetadomesticus 是行为研究的重要模式生物,通常在密集的商业设施中饲养,可以随意获取食物,并且没有捕食者死亡的风险——条件与野外截然不同。我们预测,由于生活在密集环境中的选择,商业衍生的雄性会表现出较少的性内攻击性。我们预测,商业衍生的雌性对雄性鸣叫的反应较少,因为它们更有可能随机遇到许多雄性。相反,我们发现商业来源的雄性比野生的更具攻击性,并且商业来源和野生雌性对鸣叫的反应没有差异。昆虫作为大量进化和行为生物学研究的模型系统。如果这些动物是在圈养环境中进化的,它们可能无法准确描述我们想要了解的自然现象。我们预测,商业衍生的雌性对雄性鸣叫的反应较少,因为它们更有可能随机遇到许多雄性。相反,我们发现商业来源的雄性比野生的更具攻击性,并且商业来源和野生雌性对鸣叫的反应没有差异。昆虫作为大量进化和行为生物学研究的模型系统。如果这些动物是在圈养环境中进化的,它们可能无法准确描述我们想要了解的自然现象。我们预测,商业衍生的雌性对雄性鸣叫的反应较少,因为它们更有可能随机遇到许多雄性。相反,我们发现商业来源的雄性比野生的更具攻击性,并且商业来源和野生雌性对鸣叫的反应没有差异。昆虫作为大量进化和行为生物学研究的模型系统。如果这些动物是在圈养环境中进化的,它们可能无法准确描述我们想要了解的自然现象。商业来源的雌性和野生雌性对鸣叫的反应没有差异。昆虫作为大量进化和行为生物学研究的模型系统。如果这些动物是在圈养环境中进化的,它们可能无法准确描述我们想要了解的自然现象。商业来源和野生雌性对鸣叫的反应没有差异。昆虫作为大量进化和行为生物学研究的模型系统。如果这些动物是在圈养环境中进化的,它们可能无法准确描述我们想要了解的自然现象。
更新日期:2019-03-01
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