Russian Journal of Marine Biology最新文献_第5页

Growth Patterns in the Saffron Cod, Eleginus gracilis Tilesius (Gadidae), during the First Year of Life 红花鳕鱼（Eleginus gracilis Tilesius，鳕科）第一年的生长模式

IF 0.6 4区生物学

Russian Journal of Marine Biology Pub Date : 2024-01-26 DOI: 10.1134/s1063074023070040

A. V. Buslov

{"title":"Growth Patterns in the Saffron Cod, Eleginus gracilis Tilesius (Gadidae), during the First Year of Life","authors":"A. V. Buslov","doi":"10.1134/s1063074023070040","DOIUrl":"https://doi.org/10.1134/s1063074023070040","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>Patterns of linear and weight growth during the first year of life in saffron cod from different parts of the range are considered based on measurement data and summarized materials for the species available in literature. The growth within a year is simulated by a logistic function. Individuals from the southern areas of the range have been found to grow significantly faster. The most intense linear growth is observed in the first 4 months of life when body length in larvae and juveniles increases by about 50–60% per month. Then, the relative increment decreases significantly in autumn and winter to a rate no greater than 1–4% by the end of the first year of life. The absolute length increments increase during the first half of the year, reaching a maximum of 25–30 mm per month in late summer and early autumn. In the rest of the year, the absolute increments decrease to 2–3 mm. The weight growth pattern is markedly different from the linear one. The weight growth is most intense and significantly exceeds the linear growth within the first 5 months of life. In this period, the body weight at least doubles each month. The rate of relative increments gradually decreases from the first to the fifth month of life. Afterwards, upon reaching a weight of approximately 5 g, the rate of relative weight increments decreases abruptly, although the absolute increments increase substantially. The maximum weight increments (5–6 g) occur in the sixth–eighth months of life, when fish reach a body length greater than 86 mm. In this short period, the saffron cod gain slightly more than 60% of their first-year weight. The peaks of linear and weight increments are discordant in time, with the lag between them being about 2 months. The maximum body length increments are observed in July–September; the maximum weight increments occurred in September–November.</p>","PeriodicalId":49584,"journal":{"name":"Russian Journal of Marine Biology","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2024-01-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139577982","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Swift’s Scallop (Chlamys swiftii, Bivalvia) Resources and the Structure of Beds in Coastal Waters of Primorsky Krai, Sea of Japan 日本海滨海边疆区沿海水域的斯威夫特扇贝（Chlamys swiftii，双壳类动物）资源和贝床结构

IF 0.6 4区生物学

Russian Journal of Marine Biology Pub Date : 2024-01-26 DOI: 10.1134/s1063074023070118

D. A. Sokolenko, L. G. Sedova

{"title":"Swift’s Scallop (Chlamys swiftii, Bivalvia) Resources and the Structure of Beds in Coastal Waters of Primorsky Krai, Sea of Japan","authors":"D. A. Sokolenko, L. G. Sedova","doi":"10.1134/s1063074023070118","DOIUrl":"https://doi.org/10.1134/s1063074023070118","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>The current status of <i>Chlamys swiftii</i> beds and resources of this species in the coastal waters of Primorsky krai, Sea of Japan, are assessed on the basis of data collected in 2007–2021. It has been found that scallops do not form dense aggregations sufficient for commercial harvesting. Scallop beds with the highest average biomass (22.5 ± 5.0 g/m<sup>2</sup>) are concentrated in the waters from Cape Povorotny to Cape Yuzhny; beds with the lowest biomass are in Peter the Great Bay (3.7 ± 2.1 g/m<sup>2</sup>). All beds have a mosaic pattern of distribution. The total stock of this scallop species is estimated at 1400 t; the commercial stock, at 1300 t. About 99% of the total stock in the coastal waters of Primorsky krai is concentrated in the area from Cape Povorotny to Cape Zolotoy. In these waters, the recruitment of juveniles to the stock has been found to be more regular and active than in Peter the Great Bay. The percentage of scallops of noncommercial size varies from 1.9 to 19.0%. The <i>Ch. swiftii</i> beds in Peter the Great Bay are dominated by individuals at age of 3–6 years with a shell height of 80–115 mm; in the area from Cape Povorotny to Cape Zolotoy, by individuals at ages of 3–7 years with a shell height of 70–110 mm. The modal age of scallops is 4 years, and the maximum age ranges from 7 to 12 years.</p>","PeriodicalId":49584,"journal":{"name":"Russian Journal of Marine Biology","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2024-01-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140887920","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Sockeye Salmon of Russian Origin: What Can Fishermen Count On? 产自俄罗斯的红鲑鱼：渔民能指望什么？

IF 0.6 4区生物学

Russian Journal of Marine Biology Pub Date : 2024-01-26 DOI: 10.1134/s106307402307009x

A. N. Makoedov, A. A. Makoedov

引用次数: 0

Stocks and Fishery of Cod (Gadus macrocephalus, Gadidae) in the Northwestern Bering Sea in 1965–2022 1965-2022 年白令海西北部鳕鱼（鳕科）的种群和捕捞情况

IF 0.6 4区生物学

Russian Journal of Marine Biology Pub Date : 2024-01-26 DOI: 10.1134/s1063074023070155

A. B. Savin

引用次数: 0

The Status of the Chum Salmon (Oncorhynchus keta) Commercial Stock and Prediction of its Size off Iturup Island 伊图鲁普岛附近大马哈鱼（Oncorhynchus keta）商业种群的现状及其规模预测

IF 0.6 4区生物学

Russian Journal of Marine Biology Pub Date : 2024-01-26 DOI: 10.1134/s1063074023070052

A. N. Elnikov, O. V. Zelennikov

{"title":"The Status of the Chum Salmon (Oncorhynchus keta) Commercial Stock and Prediction of its Size off Iturup Island","authors":"A. N. Elnikov, O. V. Zelennikov","doi":"10.1134/s1063074023070052","DOIUrl":"https://doi.org/10.1134/s1063074023070052","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>The abundance dynamics and the size and age structure of the chum salmon stock formed in Prostor and Kurilsky Bays of Iturup Island, Kuril Islands have been analyzed. The number of chum juveniles released into the waters of the bays increased from 10.7 million fish in 1996 to 197.6 million fish in 2020. The catch of adults was closely related (<i>r</i> = 0.66) with the release of juveniles and also increased from 800 t in 1996 to 18 968 t in 2019. The year-to-year dynamics of the chum salmon catch was almost identical between these two bays. If a strong year-class formed, it was caught in both bays; with a low survival rate of a year-class, low catches were recorded everywhere. Spawners of younger age groups (aged 2+ and, predominantly, 3+ years) markedly dominated catches in 2014–2022. Of 22 939 spawners examined in those years, 14 221 fish, or 62.0%, were aged 3+ years. Prediction of chum salmon catch weight in Prostor and Kurilsky Bays is based on two factors: the substantial predominance of age 3+ spawners in each year-class and the close correlation between the catch at age 2+ and the catch at age 3+ in the following year (<i>r</i> = 0.89; <i>r</i><sub>s</sub> = 0.98). The significant relationship between the catch of pink salmon and that of chum salmon spawners at age 3+ from the year-classes of juveniles released in the same year (<i>r</i> = 0.71; <i>r</i><sub>s</sub> = 0.75) can be considered an additional criterion.</p>","PeriodicalId":49584,"journal":{"name":"Russian Journal of Marine Biology","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2024-01-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139578081","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Patterns of Linear Growth and Annulus Formation on Scales of Pacific Herring in the Peter the Great Bay 彼得大帝湾太平洋鲱鱼鳞片的线性生长和环状形成模式

IF 0.6 4区生物学

Russian Journal of Marine Biology Pub Date : 2024-01-26 DOI: 10.1134/s106307402307012x

L. A. Chernoivanova

引用次数: 0

Dynamics of Zooplankton Consumption by the Three-Spined Stickleback Gasterosteus aculeatus (LINNAEUS, 1758) at Different Densities of the Predator 不同捕食者密度下三刺ickleback Gasterosteus aculeatus (LINNAEUS, 1758) 消耗浮游动物的动态变化

IF 0.6 4区生物学

Russian Journal of Marine Biology Pub Date : 2024-01-25 DOI: 10.1134/s1063074023060056

F. S. Lobyrev

引用次数: 0

Dynamics of Phytoplankton Species Structure in the Kurile Lake (Kamchatka Peninsula) 库里尔湖（堪察加半岛）浮游植物物种结构的动态变化

IF 0.6 4区生物学

Russian Journal of Marine Biology Pub Date : 2024-01-25 DOI: 10.1134/s1063074023060093

V. V. Sukhanov, E. V. Lepskaya

引用次数: 0

Formation of the Fauna of Cartilaginous Fishes of the Emperor Seamount Chain 皇帝海山链软骨鱼类动物群的形成

IF 0.6 4区生物学

Russian Journal of Marine Biology Pub Date : 2024-01-25 DOI: 10.1134/s1063074023060020

V. N. Dolganov

{"title":"Formation of the Fauna of Cartilaginous Fishes of the Emperor Seamount Chain","authors":"V. N. Dolganov","doi":"10.1134/s1063074023060020","DOIUrl":"https://doi.org/10.1134/s1063074023060020","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>The presented data on distribution of cartilaginous fishes in the northern Pacific Ocean show that the core of the fauna of the Emperor Seamount Chain includes Indo-West Pacific species, which settled the ridge from the coast of Asia. Epipelagic species are not permanent residents of the region, but annually migrate from the mainland to the ocean together with common abundant fish species that form their food supply. Sharks and chimaeras of the meso-benthopelagic zone constitute the basis of permanent cartilaginous fish communities of the seamounts of the northwestern Pacific. Representatives of the lower meso-benthopelagic zone settled the Hawaiian and Emperor Seamount Chains along with the Markus-Necker Ridge. Less deep-sea, but adapted to a fairly long-term dwelling in the water column in the adult state, the species of the upper meso-benthopelagic zone, spreading towards the ridge, covered a distance of about 3000 km in the pelagic zone. Probably, some sharks of the lower meso-benthopelagic zone could inhabit the underwater mountains of the Emperor Seamount Chain in the same way. The low endemicity of cartilaginous fishes in the considered area (5%) and the presence of identical and closely related species in southern Japan do not allow us to regard migrations to the Emperor ridge as rare, with the exception of sharks of the genera <i>Squalus</i> and <i>Centroscyllium</i>, which diverged on the seamounts to the level of new species.</p>","PeriodicalId":49584,"journal":{"name":"Russian Journal of Marine Biology","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2024-01-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139577815","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

First Investigations of Benthic Soft-Walled Foraminifera and Gromiids (Protozoa) in the northwestern Sea of Japan 日本海西北部底栖软壁有孔虫和原生动物的首次调查

IF 0.6 4区生物学

Russian Journal of Marine Biology Pub Date : 2024-01-25 DOI: 10.1134/s106307402306007x

N. G. Sergeeva, O. V. Anikeeva

{"title":"First Investigations of Benthic Soft-Walled Foraminifera and Gromiids (Protozoa) in the northwestern Sea of Japan","authors":"N. G. Sergeeva, O. V. Anikeeva","doi":"10.1134/s106307402306007x","DOIUrl":"https://doi.org/10.1134/s106307402306007x","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>The taxonomic and quantitative composition of the meiobenthos, with an emphasis on foraminifera and gromiids were studied on the coast of Primorsky krai, northwestern part of the Sea of Japan, at water depths of 0.3–86.0 m. The Protozoa were evaluated for the first time in this region as a component of the meiobenthic communities. The protozoa are represented by four morpho-ecological groups: Ciliophora (free-moving and epibionts), both hard-shelled and soft-walled Foraminifera, and Cercozoa (class Gromiidea). The total abundance of the meiobenthos varied from 32 500 to 2 107 500 ind./m<sup>2</sup>. The presence of Protozoa was extremely variable. They were completely absent (station 62) and reached a maximum 155 000 ind./m<sup>2</sup> (station 42). Among the protozoans, soft-walled foraminifers (SWF) and gromiids (GR) dominated. GRs accounted for up to 51–85% of the abundance of the total protozoa at some stations in Peter the Great Bay. At other stations, SWFs prevailed and reached 93–100% of the total protozoa. The most numerous hard-shelled foraminifers (HSF) and ciliates (CL) were obtained in the Vladimir Bay and at individual stations off the eastern coast of Primorsky krai. Brief descriptions with illustrations are given for 45 representatives of the SWF belonging to the families Allogromiidae and Saccamminidae, of which 22 of them are identified to the species or genus level, and 23 morphotypes are identified to the family level. The gromiid fauna is represented by six morphotypes.</p>","PeriodicalId":49584,"journal":{"name":"Russian Journal of Marine Biology","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2024-01-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139578119","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0