To stading the reproduction of whitefish Coregonus sardinella (Salmoniformes, Coregonidae) of the Kolyma River
2010
Kirillov, A.F. | Fedorova, E.A.
This article is dedicated to the problem of reproduction of whitefish Coregonus sardinella of the Kolyma river. This kind of fish reaches its puberty at the age of 3 or 5 with the 22-24 cm length. The absolute fecundity of a female whitefish is 8,8-62,1, at an average 24,2, thousand roe-corns and it increases with its age, length and weight. With the increasing of the absolute fecundity the average weight of roe-corns decreases, but the difference of quality of roe-corns produced by whitefish Coregonus sardinella increases both in weight and in quantity. Reproductive power of whitefish Coregonus sardinella of the Kolyma river is calculated and it makes up 23,5 million roe-corns per 1 000 puberal female whitefish
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