Abstract

The helminth parasites of freshwater fish have long proved an attractive field for parasitologists, and have spawned an extensive and voluminous literature. It was not until the seminal publications of Dogiel (1961, 1964), however, that attention was directed primarily to their ecology. Dogiel reviewed much of the existing literature in the light of ecological concepts, and examined the dependence of the parasite fauna as a whole, the parasitocoenosis, upon the environment. As well as laying down general principles, he discussed in detail (1961) the influence of physical factors, such as water chemistry and habitat size, and biological factors, such as host age, diet and migration, upon the composition of the parasite fauna of a host population. Dogiel’s reviews came to form the foundations not only for the study of the ecology of fish parasites, but also for the new discipline of ecological parasitology.

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