Metapopulation Structure of Two Species of Pikeworm (<i>Triaenophorus</i>, Cestoda) Parasitizing the Postglacial Fish Community in an Oligotrophic Lake
Elena N. Kashinskaya,
Pavel G. Vlasenko,
Tatyana V. Kolmogorova,
Gelena V. Izotova,
Anastasiya V. Shokurova,
Georgy A. Romanenko,
Grigorii N. Markevich,
Karl B. Andree,
Mikhail M. Solovyev
Affiliations
Elena N. Kashinskaya
Papanin Institute for Biology of Inland Waters, Russian Academy of Sciences, Borok 152742, Yaroslavl Region, Russia
Pavel G. Vlasenko
Institute of Systematics and Ecology of Animals of Siberian Branch, Russian Academy of Sciences, Novosibirsk 630091, Russia
Tatyana V. Kolmogorova
Institute of Systematics and Ecology of Animals of Siberian Branch, Russian Academy of Sciences, Novosibirsk 630091, Russia
Gelena V. Izotova
Institute of Systematics and Ecology of Animals of Siberian Branch, Russian Academy of Sciences, Novosibirsk 630091, Russia
Anastasiya V. Shokurova
Institute of Systematics and Ecology of Animals of Siberian Branch, Russian Academy of Sciences, Novosibirsk 630091, Russia
Georgy A. Romanenko
Altai Branch of «VNIRO» («AltaiNIRO»), Barnaul 656043, Russia
Grigorii N. Markevich
A.N. Severtsov Institute of Ecology and Evolution, Russian Academy of Sciences, Moscow 119071, Russia
Karl B. Andree
Institut de Recerca i Tecnologìa Agroalimentaries (IRTA), 43540 Sant Carles de la Ràpita, Spain
Mikhail M. Solovyev
Institute of Systematics and Ecology of Animals of Siberian Branch, Russian Academy of Sciences, Novosibirsk 630091, Russia
In the present study, we estimated the levels of infestation of the main fish species that are hosts for two Triaenophorus species: T. crassus and T. nodulosus. The prevalence of T. crassus and T. nodulosus infestations in the intestine of their definitive host–pike Esox lucius was similar (71.0% and 77.4%, respectively). At the same time, the prevalence of T. crassus infestation in muscle tissue was significantly different between the second intermediate hosts, Coregonus lavaretus pidschian (31.4%) and Cor. l. pravdinellus (91.2%), due to considerable differences in their diets. For T. nodulosus, we found significant variations in the levels of prevalence among the second intermediate hosts—100% for Lota lota, 81.8% for Cottus sibiricus 31.9% for Thymallus arcticus, and 24.5% for Perca fluviatilis—that we also explained using different diets. Moreover, analysis of the symmetry of parasite infestations did not reveal any asymmetry between the number of cysts in the left and right body surfaces of the “planktivorous” form/species of whitefish, whereas in the ‘‘benthivorous”, an asymmetry of parasite infestations was found.
