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The Evolution of Group Stability and Roost Lifespan: Perspectives from Tent-Roosting Bats
Article first published online: 25 MAR 2011
© 2011 The Author(s). Journal compilation © 2011 by The Association for Tropical Biology and Conservation
Volume 44, Issue 1, pages 90–97, January 2012
How to Cite
Sagot, M. and Stevens, R. D. (2012), The Evolution of Group Stability and Roost Lifespan: Perspectives from Tent-Roosting Bats. Biotropica, 44: 90–97. doi: 10.1111/j.1744-7429.2011.00774.x
- Issue published online: 10 JAN 2012
- Article first published online: 25 MAR 2011
- Received 4 September 2010; revision accepted 16 January 2011.
- correlated evolution;
- group longevity;
- social systems;
- tent lifespan
Although multiple hypotheses have been proposed to explain group formation, few fully explain the diversity of social interactions found in foliage-roosting bats. Among these bats, tent-roosting species are capable of constructing their own shelters. Although many bats utilize tents previously constructed by other species, it has been suggested that a particular subset of tent-roosting bats specialize on making tents from particular plant species. Tents provide protection from weather and often a place to roost close to foraging sites. Moreover, tent lifespan is plant species specific and may last from a few weeks to more than a year. To better understand effects that roosts have on social bonds of tent-roosting bats, we conducted a literature review to collect information on social systems and tent lifespan. We tested correlated evolution of group stability and group longevity with tent lifespan using Pagel's method for discrete characters. We found that group stability and group longevity are correlated with tent lifespan. That there is correlated evolution between these characters contributes to our understanding of how different mechanisms interact to produce a variety of social systems in mammals.