Winter-autumn fishery of walleye pollock Gadus chalcogrammus (Gadidae) by bottom gill nets in the Kunashir Strait in 1999–2022
https://doi.org/10.15853/2072-8212.2023.69.5-26
Abstract
Japanese gill net fishery of walleye pollock in the Kunashir Strait, also well-known as local spawning grounds of this species, has been carried out in the eastern (Russian) part for more than 20 years. The results of the fishery allow us to consider general trends in the long-term changes of the local stock in mentioned dynamic and still underexamined area on the border of the Sea of Okhotsk and the Pacific Ocean. The use of a large series of standardized catch per effort as an index of stock biomass indicates specific dynamics of walleye pollock stock biomass in the Kunashir Strait, different from the behavior in the adjacent ocean waters of the southern Kuril Islands. On the background of a long-term trend of decreasing catch per effort in the Kunashir Strait, the CPUE in the ocean waters of the islands, as well as in the southern part of the Sea of Okhotsk, demonstrates opposite trend of increase of this parameter.
About the Author
Kim Sen Tok
Sakhalin Branch of Russian Federal Research Institute of Fisheries and Oceanography (SakhNIRO)
Russian Federation
Russian Federation
Kim Sen Tok, Head of the Lab.
Lab. of marine and fresh-water fishes
Yuzhno-Sakhalinsk
References
1. Zverkova L.M. Walleye pollock of the South Kuril district. Problems of Fisheries, 2003, vol. 9, № 4, pp. 876–886. (In Russian)
2. Mikhailov A.I. Mathematical aspects of catch per unit effort standardization. Problems of Fisheries, 2015, vol. 16, № 4, pp. 489–496. (In Russian)
3. Ovsyannikova S.L., Ovsyannikov E.E. Modern status, formation and exploitation of walleye pollock stocks off the Southern Kuril Islands. Trudy VNIRO, 2022, vol. 189, pp. 134–144. (In Russian)
4. Ricker W.E. Computation and interpretation of biological statistics of fish populations. W.E. Ricker, Ottawa, 1975, translated into Russian by Babayan V.K. Moscow: Food Industry, 1979, 408 p.
5. Fadeev N.S. Fishery, population composition and biology of walleye pollock in the waters of Sakhalin, Kurils and Hokkaido. Izvestiya TINRO, 2006, vol. 147, pp. 3–35. (In Russian)
6. Shuntov V.P., Volkov A.F., Temnykh O.S., Dulepova E.P. Mintai v ecosistemakh dalnevostochnih morei [Walleye pollock in ecosystems of the Far Eastern seas]. Vladivostok: TINRO, 1993, 426 с.
7. Bentley N., Kendrick T.H., Starr P.J., Breen P.A. Influence plots and metrics: tools for better understanding fisheries catch-per-uniteffort standardizations. ICES Journal of Marine Science, 2012, no. 69, pp. 84–88.
8. Hamatsu T., Yabuki K., Watanabe K. Decadal changes in reproduction of walleye pollock (Theragra chalcogramma) off the Pacific coast of Northern Japan. Fish. Oceanogr., 2004, vol. 13, I. 1, pp. 74–83. doi: 10.1111/j.1365-2419.2004.00311.x
9. Hamatsu Т., Yabuki К. Decadal changes in reproduction of walleye pollock (Theragra chalcogramma) off the Pacific coast of Northern Japan. Fish. Oceanogr., 2004, vol. 13 (supll. 1), pp. 74–83.
10. Hilborn R., Walters C.J. Quantitative fisheries stock assessment: choice, dynamics and uncertainty. New York: Chapman and Hall, 1992, 570 p.
11. Maunder M., Punt A.E. Standardizing catch and effort data: A review of recent approaches. Fisheries Research., 2004, vol. 70 (2–3), pp. 141–159. DOI: 10.1016/j.fishres.2004.08.002
12. Tsuji S. Alaska pollack population, Theragra chalcogramma, of Japan and its adjacent waters, II: Reproductive ecology and problems in population studies. Mar. Behav. Physiol., 1989, vol. 15, pp. 147–205.
13. Yoshida H. Walleye pollock fishery and fisheries management in the Nemuro Strait, Sea of Okhotsk, Hokkaido. Proc. Intern. Symp. Biol. Manag. Walleye Pollock, 1989, Nov. 1988, Fairbanks, Alaska, pp. 59–77.
Review
For citations:
Tok K.S. Winter-autumn fishery of walleye pollock Gadus chalcogrammus (Gadidae) by bottom gill nets in the Kunashir Strait in 1999–2022. The researches of the aquatic biological resources of Kamchatka and the North-West Part of the Pacific Ocean. 2023;(69):5-26. (In Russ.) https://doi.org/10.15853/2072-8212.2023.69.5-26
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