Doktorské studium

Studijní obor Parazitologie

Název práce: Parazitární infekce způsobená Nematody u divokých a polodivokých orangutanů (Pongo abelii, Pongo pygmaes) - ekologické studie

Školitel: MVDr. Ivona Foitová, Ph.D.

Předběžné zadání:
The health of individuals and the health of ecosystems are inextricably linked. Thus understanding the factors affecting the health and survival of individuals is an important component of determining the underlying health and resilience of the environment Various internal and external stressors can have profound adverse effects on system health and the ability to militate against these is dependent on our understanding not just of the nature of these stressors but also on how they interact with the systems as a whole. One key component in the health of individuals, species and ecosystems are the parasites. Parasite infections can have a serious impact on the health of an individual, just as the general health of an individual can affect their susceptibility to parasite infection. The study of interactions between parasites and hosts is necessary in order to understand how organisms fight diseases in their natural environment and how other indigenous animals may be affected. The distribution and transmission of parasites of Orang-outang are still poorly understood compare with African great apes. Project will be concentrated on Strongyloides spp. and Oesophagostomum spp. Strongyloides spp. and Oesophagostomum spp.are widely distributed in tropical and subtropical countries causes significant health problems to humans and primates. Both species are connected with most fatal cases reported from orangutan reintroductions and captivity. A clear understanding of the specific relationships between orangutans and the parasites in their natural ecosystem, can help us to ensure the success of reintroduction and repopulation strategies and protect all primates in the wild. This project will be conducted in Gunung Leuser National Park at Sumatra – in the Langkat area especially around Bukit Lawang, Marike, Bukit Kencur etc. and in Keambe and Suaq and quarantene in Sumatra as well as in Kalimantan – at Sebangau, at Mawas-Tuanan area,at Nyaru Menteng, at Wanariset Samboja. Project will be also conducted at International Animal Rescue Indonesia sites. These areas consist of populations living at different densities in a variety of different natural habitats, under different intensities of pressure from humans. Samples are already at our lab. Wild and semi-wild (rescued, reintroduced) orangutans will be investigated in this project Our main questions and aims: Which Strongyloides and Oesophagostomum species naturally infect orangutans. To compare parasitic infection in different populations across Indonesia To test different factors such - age, sex, time of year (dry, rainy season), difference in behavior, dietary stress, population structure of host, density of host, degree of contact with human. To identify any risk factors associated with infection and potential cross infections.

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