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Contemporary Problems of Ecology

2011 year, number 1

Component Communities of Parasites and the Interaction of Parasite Faunas of Non-Commercial Fish in the Kacha River (the Basin of the Enisey)

Y. K. Chugunova1, N. M. Pronin2
1 Federal State Institution the Enisey Basin Department on Fishery and Conservation of Water Biological Resources
2 Institute of General and Experimental Biology SB RAS
jhermann@mail.ru, proninnm@yandex.ru
Keywords: component communities, parasites, non-commercial fish, dominànt species, generalist, interaction, ecological niche
Pages: 77-85

Abstract

The structure of the communities of non-commercial fish parasites in the Kacha river (a tributary of the Enisey) was determined for the first time. The studied communities are formed mainly by generalist species (68 %) with an insignificant fraction (16 %) of specialist species. According to the frequency of occurrence, only one species (Trichodinella epizootica Raabe, 1950) with the occurrence frequency > 70 % is related to the basic ones and three to secondary ones (Paratrichodinà incisà, Lom, 1959, Diðlostomum phoxini Faust, 1918, Rhabdochonà denudatà (Dujardin, 1945)). All the other species (46) are additionàl. Characteristic features of the parasitic faunà of fich in the Kacha river are very low indices of the species similarity according to Jacquard, which is an evidence of the originàlity of ecological niches of the studied hosts.