Aquatic biological resources of the northwest part of the Sea of Okhotsk

Ovchinnikov, V. V.; Прикоки, О. В.; Klinushkin, S. V.; Rakitina, Marina; Волобуев, В. В.

doi:10.15853/2072-8212.2017.44.5-15

The researches of the aquatic biological resources of Kamchatka

2017

DOI: 10.15853/2072-8212.2017.44.5-15

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Aquatic biological resources of the northwest part of the Sea of Okhotsk

V. V. Ovchinnikov¹,

О. В. Прикоки²,

S. V. Klinushkin³

et al.

Abstract: Дир.; зав. лаб.; н. с.; н. с.; советник, к. б. н.; Магаданский научно-исследовательский институт рыбного хозяйства и океанографии 685000 Магадан, Портовая, 36/10 Тел.: (4132) 607-186, 607-415. E-mail: magadanniro@magadanniro.ru ВОДНЫЕ БИОЛОГИЧЕСКИЕ РЕСУРСЫ, ОХОТСКОЕ МОРЕПредставлены сведения об основных объектах водных биоресурсов, эксплуатируемых рыбной про-мышленностью Дальнего Востока в двух рыбопромысловых подзонах -Северо-Охотоморской и в части Западно-Камчатской, прилегающей к Магаданской области… Show more

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“…Whelks is another group of potential commercial invertebrate species in Russian waters of the Barents Sea; these mollusks are the gastropods of genus Buccinum and genus Neptunea. These mollusks are caught quite actively by Russian fishermen in the Sea of Okhotsk[14]. In 2010---2015, the biomass of the commercial stock here amounted to 35.5--47.7 thousand tons, the catch ranged from 3.4 to 5.5 thousand tons.BRDEM-2019In recent years, the annual TAC for the whelks in the Sea of Okhotsk ranged from 6.0 to 6.5 thousand tons and was almost completely fulfilled.…”

mentioning

confidence: 93%

Contemporary Issues of Commercial Invertebrates’ Harvesting in the Russian Sector of the Barents Sea

Sokolov

Tyukina

Martynova

2020

KLS

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The Russian fishery for invertebrate hydrobionts in the Barents Sea includes the list of a dozen species of crustaceans, mollusks, and echinoderms. This type of fishery is characterized by great diversity in relation to the status of exploited stocks, catch size, and economic efficiency of the fishery. The list of up-to-date problems of this industry is long and includes biological, scientific, commercial, socio-economical, and market issues. Among the main problems of the Russian invertebrate fishery in the Barents Sea, overfishing, underutilization of a number of stocks, and significant emissions from fishing waste are considered. The causes of these problems, possible solutions and the priorities of such a solution are analyzed.

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mentioning

confidence: 93%

Contemporary Issues of Commercial Invertebrates’ Harvesting in the Russian Sector of the Barents Sea

Sokolov

Tyukina

Martynova

2020

KLS

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Commercial Resources of Saffron Cod, Eleginus gracilis, in Russian Waters of the Far Eastern Seas

Novikova,

Rakitina,

Metlenkov

et al. 2023

Russ J Mar Biol

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Reproduction-Molting Cycle of Northern Shrimp Pandalus Eous (Caridea, Pandalidae) in the Northwestern Japan Sea

Юрьев

Корнейчук

2019

Izv. Tihookean. naučno-issled. rybohoz. centra

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The data on northern shrimp Pandalus eous from the northwestern Japan Sea are presented, as the bioanalysis results for 204,502 ind. in trawl catches of research and fishing vessels collected in 2004–2018. The data were combined in the common database that allowed to consider annual time-series of biological parameters with 10-day resolution and to reveal long-term cycles of these parameters and determine their periods and phases. Dynamics of the mass molting was clarified for certain years. Duration of reproductive cycle for the northern shrimp females in the Japan Sea is determined as 2 years. In the first year of this cycle, the gonads develop in intersexes and females (group I) that is finished with their pre-spawning molting and spawning. In the second year of the cycle, the females (group II) hatch the eggs on pleopods, release the larvae, and then molt, too. Appearance of the hairs for egg attaching to pleopods in the process of molting is considered usually as a sign of the females transverse from the group I to the group II. In the studied population, the females of both groups were presented in the catches in approximately equal proportion throughout the year. Molting of both groups occurred simultaneously, with the peaks in early-middle May and finish by the end of June. New reproductive cycle for one of the two groups started in July. The gonads of group I and the eggs of group II developed intensively from November to March-April. Hatching of the larvae proceeded actively in March-April, with the peak in early April, spawning — in April-May, with the peak in early May. Hence, in the scale of population, the time from the gonads appearance to completion of their development and spawning for 50 % of the group I individuals is 7 months and the time of gestation for the group II is 11 months. Sex change in males began in August-October, the transitional stage between the peaks of molting lasted about 8 months: from the summer-autumn molting of males to the pre-spawning molting of intersexes — during this time they change their secondary sexual characteristics. In total, five mass molts of northern shrimp in the northwestern Japan Sea are observed annually: i) winter molting of males, with the peak in middle February; ii) pre-spawning molting, with the peak in early May; iii) molting of females after hatching of larvae, with the peak in middle May; iv) summer-autumn molting of males with partial sex change, with the peak in early September; and v) autumn molting of females, with the peak in early November. All molts have similar dynamics: each of them lasts about 3 months with the intensive molting during 1.0–1.5 months, at the peak of molt the portion of molting shrimp in catches increases to 55–71 % of the respective group. Generalized scheme of reproduction-molting cycle of northern shrimp in the northwestern Japan Sea is proposed.

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Aquatic biological resources of the northwest part of the Sea of Okhotsk

Cited by 5 publications

References 0 publications

Contemporary Issues of Commercial Invertebrates’ Harvesting in the Russian Sector of the Barents Sea

Contemporary Issues of Commercial Invertebrates’ Harvesting in the Russian Sector of the Barents Sea

Commercial Resources of Saffron Cod, Eleginus gracilis, in Russian Waters of the Far Eastern Seas

Reproduction-Molting Cycle of Northern Shrimp Pandalus Eous (Caridea, Pandalidae) in the Northwestern Japan Sea

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