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The aim of the study was to determine the contribution of pikeperch aged 0 + (Lt <10 cm) to the ichthyofauna structure as an indicator of the reproductive success of this species in Lake Miejskie where biomanipulation was performed. The treatment was carried out in late summer 2006, and comprised stocking the lake with the predatory fish species pike, pikeperch, European catfish, and eel. Gillnet...
Experimental rearing of sterlet using forms with normal and albino coloring was conducted. The spawn was fertilized as follows: spawn from females with normal coloring were fertilized with milt obtained from males with normal coloring (group CC) and with that from albino males (group CB); spawn from albino females were fertilized with milt obtained from males with normal coloring (group BC) and with...
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