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Folivory as a Constraint on Social Behaviour of Langurs in South India

Kavana, Theethira S and Erinjery, Joseph J and Singh, Mewa (2015) Folivory as a Constraint on Social Behaviour of Langurs in South India. In: FOLIA PRIMATOLOGICA, 86 (4). pp. 420-431.

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Official URL: http://dx.doi.org/10.1159/000438990

Abstract

Folivory, being a dietary constraint, can affect the social time of colobines. In the present study, we compared food items and activity budgets of two closely related species of colobines inhabiting South India, i.e. the Hanuman langur (Semnopithecus hypoleucos) and Nilgiri langur (Semnopithecus johnii), to determine whether folivory had an impact on social time in these species. Our study established that Nilgiri langurs were more folivorous than Hanuman langurs. Nilgiri langurs spent much less time on social activities, but more time on resting, although the social organization of S. hypoleucos was similar to that of the Nilgiri langur. The enforced resting time for fermentation of leafy food items may have reduced the time available for social interactions, which in turn affected the social time in Nilgiri langurs. By comparing the data from previous studies on other Hanuman langur species, we found that S. hypoleucos spent a similar amount of time on social activities as Semnopithecus entellus. Hence, the social behaviour of S. entellus and S. hypoleucos is phylogenetically highly conservative. (C) 2015 S. Karger AG, Basel

Item Type: Journal Article
Additional Information: Copy right for this article belongs to the KARGER, ALLSCHWILERSTRASSE 10, CH-4009 BASEL, SWITZERLAND
Keywords: Arboreality; Hanuman langur; Nilgiri langur; Semnopithecus hypoleucos; Semnopithecus johnii
Department/Centre: Division of Mechanical Sciences > Aerospace Engineering(Formerly Aeronautical Engineering)
Depositing User: Id for Latest eprints
Date Deposited: 03 Dec 2015 04:54
Last Modified: 26 Oct 2018 14:44
URI: http://eprints.iisc.ac.in/id/eprint/52855

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