Coordination of Group Movements in Wild Red-fronted Lemurs (<Emphasis Type="Italic">Eulemur rufifrons</Emphasis>): Processes and Influence of Ecological and Reproductive Seasonality |
| |
Authors: | Email author" target="_blank">Lennart?W?PyritzEmail author Peter?M?Kappeler Claudia?Fichtel |
| |
Institution: | 1.Behavioral Ecology & Sociobiology Unit,German Primate Center,G?ttingen,Germany;2.CRC “Evolution of Social Behaviour”,University of G?ttingen,G?ttingen,Germany |
| |
Abstract: | Group-living species have to coordinate collective actions to maintain cohesion. In primates, spatial movements represent
a meaningful model to study group coordination processes across different socio-ecological contexts. We studied 4 groups of
red-fronted lemurs (Eulemur rufifrons) in Kirindy Forest, Madagascar, between 2008 and 2010 across different ecological and reproductive seasons. We collected
data on ranging patterns using GPS collars and observational data on different predefined parameters of group movements, including
initiation, leadership, followership, overtaking events, termination, and travel distances. Cohesion of these relatively small,
egalitarian lemur groups was high year-round, but daily path length and home range size varied considerably between ecological
seasons, presumably due to long-distance migrations of some groups at the beginning of the rainy season. Individuals of different
age and sex classes successfully initiated group movements. However, stable female leadership prevailed year-round, irrespective
of ecological and reproductive season, which might be due to higher or more specific energetic requirements of reproduction.
In contrast to lemur species with a more despotic social structure, female red-fronted lemurs did not recruit more followers
than males. Adult leaders recruited more followers than subadult ones. Further, recruitment success was higher during the
peak of the dry season, when predation risk appeared to be higher. Distances of single group movements did not depend on the
initiator’s sex and age or on ecological seasons. Our results provide new insights into seasonal variability of coordination
processes and the role of social dominance in lemur group movements, thereby contributing to a comparative perspective from
a primate radiation that evolved group living independently of anthropoids. |
| |
Keywords: | |
本文献已被 PubMed SpringerLink 等数据库收录! |
|