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首页> 外文期刊>American journal of primatology >Prey Capture Efficiency in Brown Capuchin Monkeys (Cebus apella) is Influenced by Sex and Corpus Callosum Morphology
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Prey Capture Efficiency in Brown Capuchin Monkeys (Cebus apella) is Influenced by Sex and Corpus Callosum Morphology

机译：棕色卷尾猴（Cebus apella）的猎物捕获效率受性别和Corp体形态的影响

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The diet of capuchin monkeys consists largely of fruits, but these monkeys commonly prey upon insects and other invertebrates as well as vertebrates such as lizards, birds, and fish. Capturing small fast-moving prey requires the ability to process complex visuospatial information such as motion detection, shape, and pursuit. Here we report the results of an experimental investigation into whether capuchins display sex differences in prey capture efficiency, and whether these differences are associated with the morphology of regions of the corpus callosum (CC) involved in visuospatial ability. We examined the prey capture behavior of seven capuchin subjects (four female, three male) in the laboratory by providing subjects opportunities to fish. Additionally, we obtained structural magnetic resonance images from these subjects to determine if spatial-ability was related to CC anatomy. Over 30 fishing trials, we recorded the number of prey capture attempts, success rate in capturing fish, and hand techniques used in these attempts. Males were significantly faster and more successful than females at capturing prey. In addition, males had smaller total CC:brain ratios than females. Males displayed a left hand bias, as well as significant unimanual usage, whereas females displayed no significant preference for hand usage. Individual capture times were correlated with total CC:brain ratio. Taken together, our results suggest a relationship between prey capture efficiency, sex, and the degree of brain lateralization. Am. J. Primatol
机译：卷尾猴的饮食主要由水果组成，但这些猴通常捕食昆虫和其他无脊椎动物以及诸如蜥蜴，鸟类和鱼类等脊椎动物。捕获快速移动的小型猎物需要具有处理复杂的视觉空间信息的能力，例如运动检测，形状和追踪。在这里，我们报告了关于卷尾猴是否在捕获物效率上显示出性别差异，以及这些差异是否与视觉空间能力所涉及的call体（CC）区域的形态相关的实验研究结果。通过为受试者提供捕鱼的机会，我们在实验室检查了七个卷尾猴受试者（四个女性，三个男性）的猎物捕获行为。此外，我们从这些受试者获得了结构磁共振图像，以确定空间能力是否与CC解剖结构有关。在30多次钓鱼试验中，我们记录了捕获猎物的次数，捕获鱼的成功率以及这些尝试中使用的手工技术。在捕获猎物方面，雄性比雌性更快，更成功。另外，男性的总CC：脑比比女性小。男性表现出左手偏见以及大量的单手使用习惯，而女性则没有表现出对手部使用的明显偏好。个体捕获时间与总CC：脑比例相关。两者合计，我们的结果表明猎物捕获效率，性别和大脑偏侧程度之间的关系。上午。 J.普利马托尔

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