On an integrated approach to diagnostic of diseases of juvenile fish in salmon hatcheries
https://doi.org/10.15853/2072-8212.2025.77.61-72
EDN: CAWKLV
Abstract
An integrated approach based on histological, bacteriological, virological, parasitological, and hematological methods was employed between 2022 and 2024 to diagnostic of etymologically different diseases in juvenile Pacific salmon in salmon hatcheries of Kamchatka. Systemic mycosis of chum salmon was caused by the mitosporic fungi Phoma sp. A severe outbreak of trichodiniosis was linked to the toxic effect of surfactants, that reduced protective function of the fish skin. Increased mortality of Chinook salmon was a consequence of alimentary pathology. Results of the research demonstrate that integrated approach is crucial for identification of pathogen and, overall, for making diagnosis, treatment, and effective prevention of diseases in hatchery juveniles.
About the Authors
N. V. Sergeenko
Kamchatka Branch of Russian Federal Research Institute of Fisheries and Oceanography (KamchatNIRO)
Russian Federation
Russian Federation
Natalia V. Sergeenko – Ph. D. (Biology), Head of Lab. of Health of hydrobionts
Petropavlovsk-Kamchatsky
T. V. Ryazanovа
Kamchatka Branch of Russian Federal Research Institute of Fisheries and Oceanography (KamchatNIRO)
Russian Federation
Russian Federation
Tatiana V. Ryazanovа – Ph. D. (Biology), Leading Researcher
Petropavlovsk-Kamchatsky
E. A. Ustimenkо
Kamchatka Branch of Russian Federal Research Institute of Fisheries and Oceanography (KamchatNIRO)
Russian Federation
Russian Federation
Elena A. Ustimenkо – Ph. D. (Biology), Leading Researcher
Petropavlovsk-Kamchatsky
E. V. Bochkova
Kamchatka Branch of Russian Federal Research Institute of Fisheries and Oceanography (KamchatNIRO)
Russian Federation
Russian Federation
Elena V. Bochkova – Principal Specialist
Petropavlovsk-Kamchatsky
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For citations:
Sergeenko N.V., Ryazanovа T.V., Ustimenkо E.A., Bochkova E.V. On an integrated approach to diagnostic of diseases of juvenile fish in salmon hatcheries. The researches of the aquatic biological resources of Kamchatka and the North-West Part of the Pacific Ocean. 2025;(77):61-72. (In Russ.) https://doi.org/10.15853/2072-8212.2025.77.61-72. EDN: CAWKLV
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