Abstract
The article describes the habitat and behavior of the river perch (Perca fluviatilis L.), which dominates the reservoirs of the Kenozero National Park (KNP). It is not found only in the dystrophic crucian lakes. In its habitats, perch is also one of the most numerous species and, as 
 a result, an important object of recreational fishing. There are presented the results of studying perch populations in the main fishery reservoirs of the KNP obtained in 2007-2019 in the course of author's research. The information about biology, ecology and abundance of perch is given. The stock status and the role that perch plays in the life of the local population as an aquatic biological resource have been determined. In the aquatic ecosystems of Park's lakes perch was stated the dominant and healthy species. Its most numerous populations live in the large KNP lakes - Kenozero and Lekshmozero. These are the main fishery reservoirs of the Park, where more than 95% of all fish is caught. Perch here takes 3-4 place among all the caught fish species. In 2019 its share in the total fish catch in Kenozero and Lekshmozero, according to official statistics, made 14%. In general, perch in the national Park is second only to vendace and pike in the commercial importance. And in the winter, perch is the main object of ice fishing.
Highlights
The article describes the habitat and behavior of the river perch (Perca fluviatilis L.), which dominates the reservoirs of the Kenozero National Park (KNP)
There are presented the results of studying perch populations in the main fishery reservoirs of the KNP obtained in 2007-2019 in the course of author's research
The stock status and the role that perch plays in the life of the local population as an aquatic biological resource have been determined
Summary
Материал и методы исследования Полевые работы на водоемах КНП проводились автором в течение 10 лет – с 2008 по 2019 г. Результаты исследований и их обсуждение В Лекшмозере окунь в общей выборке из любительских и научных уловов 2018–2019 гг. Размеры добытой рыбы колебались в среднем от 17 см и 103 г до 37 см и 1 074 г соответственно возрасту В Кенозере также наблюдается большое различие размерных характеристик у особей одного возраста старше 4–5 лет. Что обе формы представляют одну популяцию вида, в которой в течение нескольких первых лет жизни окуня происходит его постепенная дифференциация по размерам. Средние размеры тугорослого окуня здесь варьируют от 10 см и 13 г у двухлеток, до 25–26 см и около 300 г у рыб в возрасте 10 лет Его средние размеры в наших сборах колебались от 21–22 до 37 см в длину и от 170 г до более 1 кг массой Сравнительные данные по линейному росту быстрорастущего и тугорослого окуня наиболее характерны для Лекшмозера (рис.)
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: Vestnik of Astrakhan State Technical University. Series: Fishing industry
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
