Abstract
Studies about parasitization by Cryptosporidium in great apes have been scarce and mostly conducted in captivity. The present study reports the presence of Cryptosporidium sp. in wild chimpanzees (Pan troglodytes) from Ugalla, western Tanzania. Ugalla is one of the driest, most open, and seasonal habitats inhabited by chimpanzees. Cryptosporidium sp. was found in 8.9 % of the samples. The presence of the parasite was determined by preserving fecal samples in chemical conventional fixatives (MIF and alcohol absolute) staining them using a modified Zielh-Neelsen technique, and examining them with a light microscope. The number of fecal samples positive for Cryptosporidium was significantly higher during the rainy than during the dry season (p < 0.005). The results showed that feces collected in the rainy season were almost three times more likely to be positive for Cryptosporidium than those collected in the dry season (OR = 2.81). Cryptosporidium detection was significantly negatively affected by highest temperatures (>28.7 °C, p < 0.001). Cryptosporidiosis can cause serious health problems in humans and its potential effect on Ugalla chimpanzees is discussed.
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Acknowledgments
We thank Tano Ahmadi, Busoti Juma, Mzee Katandasha, Shedrack Lucas, Alejandro Perez, Moshi Rajabu, Abdalla Said, Ndai Sammwely, and Are Thune for their help in the field. We thank the Government of Tanzania, the Commission for Science and Technology (COSTECH), and the Tanzania Wildlife Research Institute (TAWIRI) for permission to work at Ugalla and to export chimpanzee fecal samples. We thank the University of Barcelona and Labco Analysis, Barcelona, for technical support. We are grateful to the L.S.B. Leakey Foundation, National Science Foundation, Jane Goodall Center at the University of Southern California, Ugalla Lab at UCSD, Wenner-Gren Foundation, International Primatological Society, Carnegie Trust for Universities of Scotland, Harold Hyam Wingate Foundation, Royal Anthropological Institute, and UCSD Committee on Research for financial support.
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Gonzalez-Moreno, O., Hernandez-Aguilar, R.A., Piel, A.K. et al. Prevalence and climatic associated factors of Cryptosporidium sp. infections in savanna chimpanzees from Ugalla, Western Tanzania. Parasitol Res 112, 393–399 (2013). https://doi.org/10.1007/s00436-012-3147-8
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DOI: https://doi.org/10.1007/s00436-012-3147-8