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Impact of snare injuries on parasite prevalence in wild chimpanzees (Pan troglodytes)

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Yersin_2016_Impact_IJP_AAM.pdf (321.4Kb)
Date
02/2017
Author
Yersin, Harmony
Asiimwe, Caroline
Voordouw, Maarten J.
Zuberbühler, Klaus
Keywords
Conservation
Helminths
Intestinal parasites
Pan troglodytes
Protozoa
Snare injury
BF Psychology
QH301 Biology
Ecology, Evolution, Behavior and Systematics
Animal Science and Zoology
NDAS
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Abstract
Many primate populations are severely threatened by human activity. Illegal hunting with snares frequently causes fatal injuries and permanent mutilations in wild primates. Traumatic injuries and stressful experiences can reduce the efficacy of the immune system to fight parasitic infections. Snare-related changes in primate behavior may also influence the probability of exposure to parasites. We hypothesized that primates with permanent snare-related injuries would have a higher prevalence of intestinal parasites than control individuals. We tested the relationship between snare injuries and the prevalence of intestinal parasites in wild chimpanzees (Pan troglodytes) of Budongo forest, Uganda. We collected 487 fecal samples from known individuals (70 control and 20 snare-injured chimpanzees) and used flotation and sedimentation to isolate helminth eggs and an immunochromatographic assay to identify protozoan cysts. We found that the prevalence of Strongylida nematodes was significantly higher in snare-injured chimpanzees than in control individuals. In contrast, we found no association between snare injuries and three other parasite taxa: Ascaris, cestode, and Cryptosporidium parvum. Our study suggests that snare-injured primates may have higher exposure and/or be more susceptible to developing infections with helminth parasites than control individuals. Future studies should investigate whether snare injuries influence parasite prevalence in other species of wild primates.
Citation
Yersin , H , Asiimwe , C , Voordouw , M J & Zuberbühler , K 2017 , ' Impact of snare injuries on parasite prevalence in wild chimpanzees ( Pan troglodytes ) ' , International Journal of Primatology , vol. 38 , no. 1 , pp. 21-30 . https://doi.org/10.1007/s10764-016-9941-x
Publication
International Journal of Primatology
Status
Peer reviewed
DOI
https://doi.org/10.1007/s10764-016-9941-x
ISSN
0164-0291
Type
Journal article
Rights
© 2016, Springer Science+Business Media New York. This work has been made available online in accordance with the publisher’s policies. This is the author created, accepted version manuscript following peer review and may differ slightly from the final published version. The final published version of this work is available at link.springer.com / https://doi.org/10.1007/s10764-016-9941-x
Description
We thank the Royal Zoological Society of Scotland for providing core funding to the BCFS. We thank the ARCUS Foundation for funding the Chimpanzee Monitoring Programme. Funding for fieldwork was provided by the Institute of Biology and the Fonds des Donations of the University of Neuchâtel, as well as the M. Wüthrich and A. Mathey-Dupraz Foundation and an ERC grant (PRILANG 283871) to K. Zuberbühler.
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  • University of St Andrews Research
URL
http://link.springer.com/article/10.1007/s10764-016-9941-x#SupplementaryMaterial
URI
http://hdl.handle.net/10023/12384

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