Sex differences in common Marmosets (Callithrix jacchus) in response to an unfamiliar food task
Sex differences in common Marmosets (Callithrix jacchus) in response to an unfamiliar food task
复制标题
普通狨猴（Callithrix jacchus）对不熟悉的食物任务的性别差异
作者：
M. E. Yamamoto;Camila Domeniconi;H. Box
越来越多的信息表明，马立克次体的行为存在性别差异，其中包括动物在食物任务中的表现。例如，生殖和非生殖的成年女性被发现在解决食物任务方面比成年男性更成功。在这项研究中，10名成年男性和10名成年女性普通绒猴（Callithrix jacchus），单独圈养，进行了测试与一个不熟悉的任务，涉及提取嵌入的食物。任务是打开一个装有葡萄干的塑料罐;开口端用羊皮纸覆盖。每只绒猴在连续5天的3个区组中进行15次试验。我们测量了每只动物打开盖子并得到葡萄干的潜伏期-通过自发出现的五种策略之一。雌性比雄性更快、更有效地学会了这项任务;例如，所有的雌性都在第一天打开了罐子，而在同一天只有七只雄性打开了罐子。雌性也逐渐减少了打开试管的时间。例如，雌性动物在第15天的最终潜伏期明显较短。这些结果与马蹄莲的相关文献是一致的，不能解释在心理能力，力量，手的形态，或能源需求方面的差异。有必要进一步调查，以澄清这些差异的原因。
There is a growing body of information on sex differences in callitrichid behaviour that includes the animals’ performance in food tasks. For example, both reproductive and non-reproductive adult females have been found to be more successful than adult males in solving food tasks. In this study ten adult male and ten adult female common marmosets (Callithrix jacchus), housed individually, were tested with an unfamiliar task that involved the extraction of an embedded food. The task was to open a plastic canister that contained a raisin; the open end was covered with parchment paper. Each marmoset was given 15 trials in three blocks of 5 consecutive days. We measured the latency for each animal to open the lid and get the raisin—by one of five strategies that spontaneously emerged. The females learned the task faster and more efficiently than males; all the females opened the canister on day 1, for instance, in contrast to seven of the males on the same day. Females also progressively decreased the time that they took to open the tube. The final latency on day 15, for instance, was significantly shorter for the females. These results are consistent with relevant literature for callitrichids and cannot be accounted for in terms of differences in mental abilities, strength, hand morphology, or energy requirements. Further investigation is necessary to clarify the reasons for these differences.