ПРОМЫСЛОВЫЕ УЛОВЫ И БИОЛОГИЧЕСКИЕ ПО- КАЗАТЕЛИ КОРЮШКИ (ОSMERUS EPERLANUS (L.)) ОНЕЖСКОГО ОЗЕРА В СОВРЕМЕННЫХ УСЛОВИЯХ
COMMERCIAL CATCHES AND BIOLOGICAL PARAMETERS OF SMELT (ОSMERUS EPERLANUS (L.)) OF LAKE ONEGA IN MODERN CONDITIONS
Author(s): Aleksandra V. Barsova, T. I. SergeevaSubject(s): Physical Geopgraphy, Evaluation research, Present Times (2010 - today)
Published by: Петрозаводский государственный университет
Keywords: catch; sex composition; female; male; length AC; growth gain;
Summary/Abstract: The 5 years (2012–2016) data on fishery catches of smelt from Lake Onega and their biological indicators are presented in the article. The catches in focus contained fish of 2–6 years old. The weight of the studied fish ranged from 4 to 8 gr. Its length varied from 8 to 11 cm, with the modal group of four years old. The spawning part of the smelt population was dominated by males. The highest cumulative gain (linear and weight indexes) in the females of Onega smelt was observed during the third and fourth year of their life; in males the highest growth gain was registered in their third year of life.
Journal: Ученые записки Петрозаводского государственного университета
- Issue Year: 2017
- Issue No: 8 (169)
- Page Range: 95-97
- Page Count: 3
- Language: Russian