Hydroacoustic methods for assessing trawl catchability and fish responses to the vessel’s noise field during surveys
https://doi.org/10.36038/0131-6184-2025-2-116-125
EDN: ORCHUS
Abstract
Methods of using stationary and mobile hydroacoustic devices for measuring fish distribution and density in different zones of the vessel-trawl accounting fishing system have been developed. Experimental estimates of the characteristics of the spatial distribution of walleye pollock and the avoidance response to the vessel’s noise field have been obtained. Measurements of depth-differentiated walleye pollock catchability coefficients have been made as part of the vessel-trawl accounting system, which summarize the avoidance of vessel noise by fish and the efficiency of the trawl itself. A model of fish movement behavior in the vessel’s noise field has been developed. Integrating this model into the algorithm of echo integration and trawl surveys will allow estimating the initial structure and spatial distribution (density) of catchable aggregations, thereby allowing for more accurate stock assessments.
About the Authors
V. I. Polyanichko
Pacific Branch of the State Scientific Research Center of the Russian Federation FGBNU VNIRO (TINRO)
Russian Federation
Russian Federation
Vladimir I. Polyanichko – Head of the sector of commercial hydroacoustics of the Laboratory of commercial hydroacoustics, fishing technologies and technical means of aquaculture
4 Shevchenko Lane, Vladivostok, 690091
M. Yu. Kuznetsov
Pacific Branch of the State Scientific Research Center of the Russian Federation FGBNU VNIRO (TINRO)
Russian Federation
Russian Federation
Mikhail Yu. Kuznetsov – Candidate of Technical Sciences, Head of the Laboratory of Commercial Hydroacoustics, fishing Technologies and technical means of Aquaculture
4 Shevchenko Lane, Vladivostok, 690091
References
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Review
For citations:
Polyanichko V.I., Kuznetsov M.Yu. Hydroacoustic methods for assessing trawl catchability and fish responses to the vessel’s noise field during surveys. Fisheries. 2025;1(2):116-125. (In Russ.) https://doi.org/10.36038/0131-6184-2025-2-116-125. EDN: ORCHUS
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