Assessment of the effects of ama- teur fishing on the stock and biological state of toothed smelt Osmerus dentex in winer-spring period in the lakes Nerpichye and Kalygir (East Kamchatka)
| Autor: | A. V. Bugaev, Yu. N. Amelchenko, V. A. Ryabchun, O. V. Frolov |
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| Rok vydání: | 2023 |
| Zdroj: | The researches of the aquatic biological resources of Kamchatka and the North-West Part of the Pacific Ocean. 1:52-65 |
| ISSN: | 2782-6236 2072-8212 |
| DOI: | 10.15853/2072-8212.2022.65.52-65 |
| Popis: | Data on the dynamics of major biological indices (sex ratio, age composition, length and weight) for the populations of toothed smelt in the lakes Nerpichye and Kalygir (East Kamchatka) were obtained as a re- sult of winter monitoring of the stocks for 2011–2022. The data were collected in the mode of amateur (recreational) ice fishing. This approuch allowed making expert assessment of the annual catch of toothed smelt in the lakes by amature fishermen. It has been found, that the actual total catch of smelt in the lakes Nerpichye and Kalygir, believing average annual data, is about 300 t, what is looking like commercial scale. How- ever, results of the monitoring indicate, that biological structure in both popuations of toothed smelt has not demonstrated any substantial longterm changes, what indicates of a stable modern state of the stocks of the species in the lakes Nerpichye and Kalygir. |
| Databáze: | OpenAIRE |
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