Growth rate and reproduction of a brood stock of European whitefish (Coregonus lavaretus L.) from Lake Gaładuś under controlled rearing conditions

摘要: The focus of the study was to analyze effects artificial reproduction whitefish, Coregonus lavaretus (L.) aged from 1+ 4+. It confirmed that males comprised 64.5% brood stock. were sexually mature at age 1+, while most females 2+. gained weight faster in comparison males, and differences highly statistically significant (P < 0.001). Survival during period first spawning 4+ 79.6% for 59.6% females. quantity eggs obtained, egg size, their survival incubation all increased as fish aged. obtained 3+ significantly higher younger (1+ 2+) results current indicate exploiting a whitefish stock under controlled conditions can begin early highest relative fecundity largest size 3+.