Commercial and biological characteristic of perch (Perca fluviatilis, L., 1758) of the Dnieper-Bug delta system
Journal Title: «Таврійський науковий вісник» - Year 2017, Vol 98, Issue
Abstract
The article presents information on the biological state of Perca fluviatilis (Linnaeus, 1758) perch of the Dnieper-Bug delta system in connection with the current level of anthropogenic load, where the main factors of impact are commercial and amateur fishing. It is determined that the current state of commercial perch is characterized by the gradual extension of the age range and the shift of modal groups to its right wing. The relative stability of the linearmass indices indicates a satisfactory state of the stock as a whole, and the age-related condition dynamics show the satisfactory food supply of the species. Stability of growth characteristics combined with a good replenishment of the commercial part of the stock has led to an increase in catch volumes.
Authors and Affiliations
К. М. Гейна
Keywords
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