Document Type
Oral Presentation
Campus where you would like to present
Ellensburg
Event Website
http://digitalcommons.cwu.edu/source/
Start Date
18-5-2017
End Date
18-5-2017
Keywords
gray-shanked douc langur, semi-captive, EPRC, Vietnam
Abstract
In 2005 the Endangered Primate Rescue Center (Cúc Phương National Park, Vietnam) acquired 5ha of forest as a pre-release habitat for endangered primates. Our study assessed whether the pre-release habitat was suitable for the expression of grey-shanked douc (GSD) langurs’ (Pygathrix cinera) wild behavioral repertoire of substrate use. We categorized substrates as boughs, branches or twigs. We observed four langurs living in the pre-release habitat from 16-10-03 to 16-12-02 and compared results with wild GSD langurs. Both semi-captive and wild langurs used substrates at significantly varied proportions (semi-captive: χ2=68.36, df=2, P2=704.4, df=2, P2=7.78, df=2, p = .0204), social (χ2= 26.48, df=2, p < .001) and travel behaviors (χ2= 12.75, df=2, p = .0017). There was no significant difference between semi-captive and wild GSD langurs’ substrate use when feeding (χ2=1.04, df=2, p = .5945). Both semi-captive and wild langurs used twigs for feeding behavior more often than they fed on other substrates. These results are congruent with the understanding of folivorous primates acquisition of young leaves, which are commonly found the canopy outer layer. Our results indicate that the semi-captive space encourages natural use of substrates by the langurs living within it.
Recommended Citation
Hemmes-Kavanaugh, Hilary, "Comparison of semi-captive and wild gray-shanked douc langurs’ (Pygathrix cinerea) substrate use" (2017). Symposium Of University Research and Creative Expression (SOURCE). 194.
https://digitalcommons.cwu.edu/source/2017/OralPresentations/194
Department/Program
Primate Behavior and Ecology
Comparison of semi-captive and wild gray-shanked douc langurs’ (Pygathrix cinerea) substrate use
Ellensburg
In 2005 the Endangered Primate Rescue Center (Cúc Phương National Park, Vietnam) acquired 5ha of forest as a pre-release habitat for endangered primates. Our study assessed whether the pre-release habitat was suitable for the expression of grey-shanked douc (GSD) langurs’ (Pygathrix cinera) wild behavioral repertoire of substrate use. We categorized substrates as boughs, branches or twigs. We observed four langurs living in the pre-release habitat from 16-10-03 to 16-12-02 and compared results with wild GSD langurs. Both semi-captive and wild langurs used substrates at significantly varied proportions (semi-captive: χ2=68.36, df=2, P2=704.4, df=2, P2=7.78, df=2, p = .0204), social (χ2= 26.48, df=2, p < .001) and travel behaviors (χ2= 12.75, df=2, p = .0017). There was no significant difference between semi-captive and wild GSD langurs’ substrate use when feeding (χ2=1.04, df=2, p = .5945). Both semi-captive and wild langurs used twigs for feeding behavior more often than they fed on other substrates. These results are congruent with the understanding of folivorous primates acquisition of young leaves, which are commonly found the canopy outer layer. Our results indicate that the semi-captive space encourages natural use of substrates by the langurs living within it.
https://digitalcommons.cwu.edu/source/2017/OralPresentations/194
Faculty Mentor(s)
Dr. Lori Sheeran