Abstract
We tested 114 faecal samples from wild simian immunodeficiency virus (SIV)-positive (n = 43) and SIV-negative (n = 71) chimpanzees (Pan troglodytes troglodytes) in southeast Cameroon for the presence of gastrointestinal parasites by direct smear. We observed cysts from different protozoa (Entamoeba coli and Entamoeba histolytica / Entamoeba dispar, Endolimax nana, Iodamoeba butschlii, Chilomastix mesnili, Balantidium coli and Blastocystis cells) and trophozoites from Troglodytella abrassarti and Balantidium coli. Eggs from different helminths (strongylids, Ascaris lumbricoides, Abbreviata caucasica, Trichuris sp., Capillaria sp., Enterobius anthropopeci, Bertiella sp., Hymenolepis diminuta and an undetermined fluke) were also observed. Finally, we observed eggs that could not be properly identified and classified. We did not observe any differences between the SIV + and SIV − samples except for the unidentified eggs. The studied chimpanzees were highly parasitised by strongylid (85.1 % of prevalence), Troglodytella (43.8 %) and Blastocystis (2.9 %), and the frequency of the other parasites ranged from 0.9 to 8.8 %. These high levels of parasite infections could represent an additional burden in a population where there is a high rate of the SIV virus in circulation.
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Acknowledgments
This work was supported in part by grants from the National Institute of Health (RO1 AI 50529) and the Agence Nationale de Recherches sur le SIDA (ANRS 12255). We thank the staff and the SIV team from PRESICA for logistical support in Cameroon and the Cameroonian Ministries of Health, Environment and Forestry, and Research for permission to collect samples in Cameroon. We also thank Dr. L. Mondolot, Pr. Y. Pelissier and Dr. S. Bertout for their useful help with the identification of false positives. We thank Pr. D. Basset for his useful help with identification of several parasite elements.
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The research conducted here complies with host country and institutional policies of ethical research on non-human primates.
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Drakulovski, P., Bertout, S., Locatelli, S. et al. Assessment of gastrointestinal parasites in wild chimpanzees (Pan troglodytes troglodytes) in southeast Cameroon. Parasitol Res 113, 2541–2550 (2014). https://doi.org/10.1007/s00436-014-3904-y
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DOI: https://doi.org/10.1007/s00436-014-3904-y