Some issues of walleye pollock reproduction in the pacific waters adjacent to the Kamchatka peninsula and the northern Kuril Islands in 2013–2022.
https://doi.org/10.36038/2307-3497-2022-189-105-119
Abstract
Purpose: To characterize some issues of East Kamchatka pollock reproduction in the last 10 years.
Methods: complex (ichthyoplankton and hydrological) surveys in the Pacific waters adjacent to the Kamchatka Peninsula and the northern Kuril Islands, surveys in the spawning center — the “North” canyon, located in Avacha Bay, layer-by-layer surveys in the canyons and on the shelf.
Novelty: the currently available data on the main spawning areas of the Eastern Kamchatka pollock were supplemented, new data on the state of the spawning stock, vertical distribution of eggs at different stages of development were presented.
Results: During the period under consideration, the main pollock spawning in Avacha and Kronotsky bays occurred above deep-water canyons, and on the shelf near southeastern Kamchatka and northern Kuril Islands — in the whole surveyed water area, in some years — to the south of the island Paramushir. According to the results of ichthyoplankton surveys, model calculations, the spawning stock of the Eastern Kamchatka pollock peaked in 2010, and then it gradually decreased. Currently, resources are at an average level. Horizons of the main pollock spawning in deep-water canyons change in an inter-a nnual aspect. In addition, as egg development, as a result of internal processes occurring in the canyons (internal waves), it, then rises, then falls in the underlying layers of water.
Practical significance: The results of the work can be used to improve the method of assessment of the current and prospective state of stocks, justification of the TAC of the Eastern Kamchatka pollock.
About the Authors
A. I. Varkentin
Kamchatka branch of «VNIRO» («KamchatNIRO»)
Russian Federation
Russian Federation
18, Nabereznaya, Petropavlovsk-Kamchatsky, 683000
D. Y. Saushkina
Kamchatka branch of «VNIRO» («KamchatNIRO»)
Russian Federation
Russian Federation
18, Nabereznaya, Petropavlovsk-Kamchatsky, 683000
References
1. Antonov N. P. 1991. Biology and population dynamics of the Eastern Kamchatka pollock: PhD abstract. Vladivostok: IMB FEB RAS 23 p. (In Russ.).
2. Balykin P. A., Tepnin O. B. 1998. Water dynamics and spawning of pollock Theragra chalcogramma off eastern Kamchatka // Studies of biology and population dynamics of commercial fish of Kamchatka shelf. № 4. P. 7–14. (In Russ.).
3. Buslov A. V. 2001. New data on distribution and migration of walleye pollock in the Pacific waters of the northern Kuril Islands and south-e astern Kamchatka // Izvestiya TINRO. V. 128. P. 229–241. (In Russ.).
4. Buslov A. V. 2008. Walleye pollock on the eastern coast of Kamchatka: current state of stocks and recommendations for rational exploitation // Izvestiya TINRO. V. 152. P. 3–17. (In Russ.).
5. Buslov A. V. 2009. About pollock (Theragra chalcogramma) spawning near the southwestern coast of Kamchatka // Izvestiya of TINRO. V. 158. P. 128–141. (In Russ.).
6. Buslov A. V., Sergeeva N. P. 2009. Some results of the experiment on incubation of Eastern Kamchatka pollock (Theragra chalcogramma) eggs // Izvestiya of TINRO. V. 156. P. 82–94. (In Russ.).
7. Buslov A. V., Tepnin O. B. 2002. Spawning and embryogenesis conditions of walleye pollock Theragra chalcogramma (Gadidae) in deep-water canyons of the Pacific coast of Kamchatka // Voprosy ichtyologii. V. 42. № 5. P. 617–625. (In Russ.).
8. Buslov A. V., Tepnin O. B. 2007. Characteristics of pollock spawning near the northern Kuril Islands and the southeastern tip of Kamchatka // Studies of aquatic biological resources of Kamchatka and the northwestern part of the Pacific Ocean. № 9. P. 235–245. (In Russ.).
9. Buslov A. V., Tepnin O. B., Dubinina A. Yu. 2004. Features of the ecology of spawning and embryogenesis of the Eastern Kamchatka pollock // Izvestiya TINRO. V. 138. P. 282–298. (In Russ.).
10. Varkentin A. I., Sergeeva N. P., Ilyin O. I., Ovsyannikov E. E. 2021. Fishery, age and size composition, stock status and catch prospects of walleye pollock (Gadus chalcogrammus, Pallas, 1814) in the water area adjacent to the Kamchatka Peninsula and the Northern Kuril Islands // Studies of aquatic biological resources of Kamchatka and the Northwest Pacific. № 60. P. 5–42. (In Russ.).
11. Gorbunova N. N. 1951. Walleye pollock eggs and it development // Izvestiya TINRO. V. 34. P. 89–97. (In Russ.).
12. Zolotov O. G., Antonov N. P. 1986. About population structure of the Eastern Kamchatka pollock // Cods of the Far Eastern seas. Vladivostok: TINRO Publish. P. 43–50. (In Russ.).
13. Ilyin O. I., Saushkina D. Ya. 2022. To the assessment of pollock (Gadus chalcogrammus) egg production in the canyons of Avacha Bay // Studies of aquatic biological resources of Kamchatka and the Northwest Pacific. № 64. P. 80–84. (In Russ.).
14. Ilyin O. I., Sergeeva N. P. 2014. Estimation of loss and production of pollock (Theragra chalcogramma) eggs in the canyons of Avacha Bay // Studies of aquatic biological resources of Kamchatka and the Northwest Pacific. № 34. P. 81–86. (In Russ.).
15. Ilyin O. I., Sergeeva N. P., Varkentin A. I. 2014. Stock assessment and prediction of TAC of Eastern Kamchatka pollock (Theragra chalcogramma) based on the precautionary approach // Trudy VNIRO. V. 151. P. 62–74. (In Russ.).
16. Kachina T. F., Sergeeva N. P. 1978. Methodology of estimation of spawning stock of the Eastern Okhotsk Pollock // Fishery industry. № 12. P. 13–14. (In Russ.).
17. Krovnin A.S., Zuenko Y.I., Figurkin A.L., Khen G.V., Kivva K.K., Novikov Y.V., Tepnin O.B. 2022. Oceanographic conditions within the main area of walleye pollock // Trudy VNIRO. V. 189. P. 16-44. (In Russ.).
18. Polutov I. A., Tripolskaya V. N. 1954. Pelagic spawn and larvae of sea fish off Kamchatka coast // Izvestiya TINRO. V. 41. P. 295–308. (In Russ.).
19. Rass T. S. 1933. Instruction on the collection and technique of quantitative treatment of sea fish eggs and fry. M: GOIN Publish. 24 p. (In Russ.).
20. Sabinin K. D., Silver A. N. 2007. «Hot spots» in the field of internal waves in the ocean // Acoustic Journal. V. 53. № 3. P. 410–436. (In Russ.).
21. Sergeeva N. P. 2019. Walleye pollock spawning intensity in Kronotsky Bay (Eastern Kamchatka) // Conservation of biodiversity of Kamchatka and adjacent seas. Mat. XX Int. scientific conference dedicated to the 150th birthday of academician V. L. Komarov, RAS. / Ed. by A. M. Tokranov. P. 177–182. (In Russ.).
22. Sergeeva N. P., Buslov A. V., Veselov S. A. 2012. Determination of the spawning start date of the Eastern Kamchatka pollock based on the results of ichthyoplankton surveys // Aquatic biological resources of the North Pacific Ocean: state, monitoring, management. Mat. All-Russian scientific conference, devoted to the 80th anniversary of KamchatNIRO. KamchatNIRO. P. 359–362. (In Russ.).
23. Shlyk N. V. 2010. Anomalies of thermohaline characteristics of Oyasio, East Kamchatka and Alaska currents. PhD abstract. Vladivostok: FEB RAS. P. 23. (In Russ.).
24. Buslov A. V., Varkentin A. I. 2008. Walleye pollock (Theragra chalcogramma) spawning in the Okhotsk Sea waters off the north Kuril Islands and south-western Kamchatka // PICES Scientific Report. № 36. P. 269–278.
Review
For citations:
Varkentin A.I., Saushkina D.Y. Some issues of walleye pollock reproduction in the pacific waters adjacent to the Kamchatka peninsula and the northern Kuril Islands in 2013–2022. Trudy VNIRO. 2022;189:105-119. (In Russ.) https://doi.org/10.36038/2307-3497-2022-189-105-119
Email this article 