Assessment of the reproduction efficiency of the Atlantic salmon Salmo salar (Salmonidae) in the Kola River (Kola Peninsula) based on data on the density of juveniles
Zubchenko, A.V.; Alekseev, M.Y. (2022). Assessment of the reproduction efficiency of the Atlantic salmon Salmo salar (Salmonidae) in the Kola River (Kola Peninsula) based on data on the density of juveniles. J. Ichthyol. 62(4): 681-690. https://dx.doi.org/10.1134/s0032945222040233
In: Journal of Ichthyology. Nauka Interperiodica/Springer: Silver Spring, Md. ISSN 0032-9452; e-ISSN 1555-6425, more
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| Keywords |
Salmo salar Linnaeus, 1758 [WoRMS]
Marine/Coastal |
| Authors | | Top |
- Zubchenko, A.V.
- Alekseev, M.Y.
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| Abstract |
In the Kola River (Kola Peninsula), on the basis of cluster analysis of long-term density data in the nursery areas of underyearlings, wild and wild + hatchery parr of Atlantic salmon Salmo salar L., four clusters have been identified in each group of juveniles with high, medium, low, and very low density. In the lower and upper reaches of the river, areas were identified where the state of salmon reproduction can be assessed as critical. The article discusses the role of illegal, unreported, unregulated fishing, ulcerative dermal necrosis and hatchery reproduction as possible reasons for the decline in the reproductive potential of one of the most significant salmon rivers in the region. |
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