|dc.contributor.author||Kilcoyne, Maureen Catherine||
|dc.description||v, 33 p.||en_US
|dc.description.abstract||Reciprocal altruism is a social interaction in which helpful services or actions are
reciprocated or interchanged for different, but equally beneficial behaviors. Reciprocal altruism
involves higher cognitive abilities and, hence, is considered one of the most complex behaviors
exhibited by animals (Tomasello and Call, 1997). In primates, allogrooming is a behavior that
can be used fur exchange in this system of reciprocal altruism. Many studies have observed how
allogrooming is reciprocated and interchanged among the anthropoid primates, while few have
found or even focused on reciprocal altruism in the allogrooming behavior of prosimian primates
(primates with less cognitive capacity).
In this study, reciprocity and interchange were investigated in the allogrooming behavior
of a prosimain species, the ringtailed lemur (Lemur catta). Reciprocal altruism was examined in
two contexts: 1) the reciprocation of allogrooming within bouts and 2) the interchange of
allogrooming for social tolerance. Observation was performed with two groups of semi-free
ranging ringtailed lemurs at the Duke University Primate Center.
It was found that the ringtailed lemurs did significantly reciprocate total allogrooming
within bouts, but did not reciprocate unilateral allogrooming (excluding simultaneous grooming).
Additionally, the presence of gratuitous bouts and bout exits provided more mixed evidence for
the prediction of reciprocation of allogroooming within bouts. More conclusive support was
uncovered for the interchange of allogrooming for social tolerance. It was discovered that
subordinates did give a greater percentage of grooming to dominates than to "equals".
Furthermore, subordinates were found to give an even greater percentage of grooming to
dominates with whom they have more frequent aggressive interactions than to dominates with
they experience more peaceful interactions. This demonstration of reciprocal altruism suggests
that ringtailed lemurs are aware of their social relations and may have more social intelligence
and cognitive skills than previously thought.||en_US
|dc.description.sponsorship||Department of Biological Anthropology and Anatomy. Duke University. Durham, North Carolina.||
|dc.relation.ispartof||Kalamazoo College Biology Senior Individualized Projects Collection||
|dc.relation.ispartofseries||Senior Individualized Projects. Biology;||
|dc.rights||U.S. copyright laws protect this material. Commercial use or distribution of this material is not permitted without prior written permission of the copyright holder.||
|dc.title||An Analysis of Reciprocal Altruism in the Allogrooming Behavior of Ringtailed Lemurs (Lemur catta)||en_US
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