CHROMOSOMAL STUDIES BY BLOOD LEUKOCYTE-CULTURE TECHNIQUE ON 3 SALMONIDS FROM YUGOSLAVIAN WATERS

Three spp. of salmonids, rainbow trout, Salmo gairdneri, brown trout, S. truta and marble trout, S. marmoratus, were studied for their karyotypes. In rainbow trout 316 metaphases were studied and recorded 2n of 60 with 44 meta- to submetacentric and 16 subtelo- to telocentric chromosomes, and the number of chromosome arms (NF) of 104. Observation on 243 metaphases of brown trout showed 2n of 80 with 20 meta- to submetacentric, 60 telocentric chromonosomes and the NF of 100. While in 164 metaphases from the marble trout 2n was of the order of 80 out of which 22 were meta to submetacentric and 58 telocentric chromosomes with NF of 108.