Relations between Spatial Distribution, Social Affiliations and Dominance Hierarchy in a Semi-Free Mandrill Population
نویسندگان
چکیده
Although there exist advantages to group-living in comparison to a solitary lifestyle, costs and gains of group-living may be unequally distributed among group members. Predation risk, vigilance levels and food intake may be unevenly distributed across group spatial geometry and certain within-group spatial positions may be more or less advantageous depending on the spatial distribution of these factors. In species characterized with dominance hierarchy, high-ranking individuals are commonly observed in advantageous spatial position. However, in complex social systems, individuals can develop affiliative relationships that may balance the effect of dominance relationships in individual's spatial distribution. The objective of the present study is to investigate how the group spatial distribution of a semi-free ranging colony of Mandrills relates to its social organization. Using spatial observations in an area surrounding the feeding zone, we tested the three following hypothesis: (1) does dominance hierarchy explain being observed in proximity or far from a food patch? (2) Do affiliative associations also explain being observed in proximity or far from a food patch? (3) Do the differences in rank in the group hierarchy explain being co-observed in proximity of a food patch? Our results showed that high-ranking individuals were more observed in proximity of the feeding zone while low-ranking individuals were more observed at the boundaries of the observation area. Furthermore, we observed that affiliative relationships were also associated with individual spatial distributions and explain more of the total variance of the spatial distribution in comparison with dominance hierarchy. Finally, we found that individuals observed at a same moment in proximity of the feeding zone were more likely to be distant in the hierarchy while controlling for maternal kinship, age and sex similarity. This study brings some elements about how affiliative networks and dominance hierarchy are related to spatial positions in primates.
منابع مشابه
Social Structure of a Semi-Free Ranging Group of Mandrills (Mandrillus sphinx): A Social Network Analysis
The difficulty involved in following mandrills in the wild means that very little is known about social structure in this species. Most studies initially considered mandrill groups to be an aggregation of one-male/multifemale units, with males occupying central positions in a structure similar to those observed in the majority of baboon species. However, a recent study hypothesized that mandril...
متن کاملThe Analysis of Spatial Distribution Pattern of Ardabil Province Industries by Using Spatial Statistics in GIS Environment
Background and Amis: Unbalanced spatial distribution of industries in most regions of the developing countries, can be have undesirable economic, environmental and social effects. Understanding the spatial distribution patterns of industries is essential for their planning and distribution in the regions.The aim of present study is to analyze the distribution and spatial patterns of Ardabil pr...
متن کاملThe Relation between Social Capital and Organizational Citizenship Behavior
Social capital results from shaping and establishment of values, norms, traditions, conventions and rules in self realization manner and in the context of social interactions and it produces hypothesis in different fields such as empathy, cooperation, humanism, loyalty and conscience in people’s social lives. The relationship between social capital and citizenship behavior is explored i...
متن کاملThe Roles of Dopamine D2 Receptor in the Social Hierarchy of Rodents and Primates
Dopamine (DA) plays significant roles in regulation of social behavior. In social groups of humans and other animals, social hierarchy exists, which is determined by several behavioral characteristics such as aggression and impulsivity as well as social affiliations. In this study, we investigated the effects of pharmacological blockade of DA D2 receptor on social hierarchy of Japanese macaque ...
متن کاملSocial Logic of Kitchen Space in Vernacular Architecture (Case Study: Qeshm Housing) – Examination and Analysis
Culture and social relations play a significant role in the formation of the structure of vernacular housing of any region, especially in the Islamic countries where privacy has a considerable effect on the vernacular culture, and consequently, on the house’s structure. Among the house spaces, the kitchen is more affected than other spaces by such issues so that its relations pattern with other...
متن کامل