ABSTRACT
The native population of the Arctic char in the Lake Mushtalampi was studied. The dwarf form of the Arctic char inhabiting the lake was revealed. The fish is characterized by extremely low growth rate and by early maturation. Twelve parasite species were found in the arctic char. The parasite fauna is typical of representatives of Salmonidae. Distinguishing features of this fauna include the absence of narrowly specialized char parasite species. High intensity of infection with nematodes Philonema oncorhynchi allows estimating the epizootic state of the studied char population as insufficient.
Subject(s)
Fish Diseases/parasitology , Lakes/parasitology , Nematoda/physiology , Nematode Infections/parasitology , Trout/parasitology , Animals , Nematoda/classification , RussiaABSTRACT
The 26 specimens of the landlocked Atlantic salmon Salmo salar L. from Namsen river and its tributary Melingselva river (central Norway) were studied by the method of complete parasitological examination in the period of 1997-1998. The 15 parasite species have been recovered. Ration of parasite with a direct and complex cycle is approximately equal, 6 and 9 respectively. Larval stages of parasites predominate among the parasites with a complex cycle. The parasite fauna fond in the landlocked Atlantic salmon is most similar to that in youngsters of the lake salmon (Salmo salar morpha sebago Girard) and the migrating Atlantic salmon (Salmo salar L.).
