[Endohelminitcs of the Obed swamp fishes [freshwater fishes, injurious mites, injurious nematodes, parasitic worms, Yugoslavia]]

This monograph consists of 7 chapters (1. Introduction, 2. Geographical and hydrological data about the Obed swamp and some important data from foreign literature,3. Investigation of the fish parasites fauna in Yugoslavia, 4. Author's own investigations, 5. Discussion on the obtained results and conclusions, 6.summary, 7. Bibliography) The investigation during 1972 and 1973 and 1974 comprised 1938 fishes from 14 genera, i.e. 17 species. 41 endohelminth species belonging to the following classes was found:Trematoda(17 species), Cestoda(6 species), Nematoda(9 species) and Acanthocephala. The highest intensity of the parasites was in January, February and June 1973. In these months the findings were positive in 7 out of 10 fish species. The maximum infestation intensity develops in the spawning period or by the end of it. Carassius auratus gibelio had the lowest infestation extension of all investigated fishes, 0.97% followed by bream, 9.52% and red-eye, 15.59%. Perch had the highest infestation extension, 65.80%, i.e. it was infected with 15 endohelminth species. Carp had the highest infestation intensity, with 47 Acanthocephalus anguillae. Bream had the lowest infestation intensity, 1-3, followed by red-eye, 1-11 etc. Infection of 1 host with a large number of various endohelminth species was found, as well as 42 new hosts(fishes)in Yugoslavia. From the economic and health aspects, the species from Acanthocephala class are the most harmful, followed by Cestoda and Trematoda. Pathogenous impact of the species of Trematoda class caused intestinal injuries in pike, red-eye, tench and carp. The growth of crucian carp is retarded notably under the pathogenous influence of Triaenophorus nodulosus from Cestoda class. Acanthocephalus gen.sp. causes serious lesions in pike, red-eye, crucian carp, carp and perch. Pathogenous impact of Pseudoechinorhynchus clavula was noticed in Carassius auratus gibelio and perch.