Related Experiment Video
Updated: Mar 14, 2026
Conditions Affecting Social Space in Drosophila melanogaster
Published on: November 5, 2015
Variations in within-group inter-individual distances between birth- and non-birth seasons in wild female patas
1Primate Research Institute, Kyoto University, 41-2, Inuyama, Aichi, 484-8506, Japan. muroyama@toyo.jp.
Abstract:
Individual spatial positioning plays an important role in mediating the costs and benefits of group living, and thus shapes different aspects of animal social systems including group structure and cohesiveness. I aimed to quantify variation in individual spacing behavior and its correlates in a group of wild patas monkeys (Erythrocebus patas) living in north Cameroon. I collected data on inter-individual distances during group scans when following subject females. Individuals had longer inter-individual distances during the non-birth season than during the birth season. Dominance relationships had little effect on inter-individual distances between females during both the non-birth and birth seasons. The results suggest that group cohesion was higher during the birth season than the non-birth season. Thus I conclude that higher group cohesion during the birth season may reduce the predation risk of infants.
Related Concept Videos
01:21Testing a Claim about Mean: Unknown Population SD
Estimating a population mean requires the samples to be approximately normally distributed. The data should be collected from the randomly selected samples having no sampling bias. There is no specific requirement for sample size. But if the sample size is less than 30, and we don't know the population standard deviation, a different approach is used;...
01:17Wald-Wolfowitz Runs Test II
For binary data, runs are identified using symbols such as + and −, or equivalently, 1s and 0s. In...