Results of rearing roach (Rutilus rutilus L.) juveniles in the spawning and rearing farms in the Krasnodar Territory in 2020
This work presents the data characterizing qualitative and quantitative parameters of the roach juveniles, reared in 2020 in the spawning and rearing farms (hatcheries) of the Krasnodar Territory; the hatcheries belong both to the liman (East-Akhtarsk and Chernoerkovsk Hatcheries) and floodplain (Beysug and Yeysk Hatcheries) types. In the East-Akharst Hatchery, all migrating juveniles reached their standard weight and were characterized by good physiological status. In the Chernoerkovsk Hatchery, the weight of around 70 % of the released juveniles was lower than the normative values (300 g); their physiological status was acceptable. Density of the roach juveniles distribution in this hatchery exceeded 40,000 ind./ha, which led to high food competition. In the water bodies of the Beysug Hatchery, the average body weight and physiological status of the released roach juveniles were compliant with the normative values. In the Yeysk Hatchery, due to poor hydrological regime during the reproductive season, the efficiency of roach reproduction was extremely low.
| Main Authors: | , , , , |
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| Format: | Journal Contribution biblioteca |
| Language: | Russian |
| Published: |
2021
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| Subjects: | Rutilus rutilus, Rearing farms, Aquaculture development, Food competition, East-Akharsk Hatchery, Chernoerkovsk Hatchery, Yeysk Hatchery, Beysug Hatchery, Нерестово-выростное хозяйство (НВХ), Физиологическое состояние, Восточно-Ахтарское ОСП, Черноерковское ОСП, Бейсугское ОСП, Ейское ОСП, ASFA_2015::S::Spawning grounds, ASFA_2015::H::Hatcheries, ASFA_2015::J::Juveniles, |
| Online Access: | http://hdl.handle.net/1834/41893 |
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