Journal of Ichthyology最新文献

Is There a Third Species of the Genus Squalus (Squalidae) Present in the Marmara Sea, or Just an Extreme Case of Intraspecific Variability of Squalus blainville? 马尔马拉海是否存在第三个鱿鱼属物种？

IF 0.7 4区生物学

Journal of Ichthyology Pub Date : 2024-08-12 DOI: 10.1134/s0032945224700462

H. Kabasakal, U. Uzer, F. S. Karakulak

引用次数: 0

Presence of a Bisexual Gonad: Implications for Protogynous Sex Change in the White-Edged Lyretail Variola albimarginata (Serranidae) 双性性腺的存在：白刃杓尾鱼（Serranidae）原生性变的意义

IF 0.7 4区生物学

Journal of Ichthyology Pub Date : 2024-08-12 DOI: 10.1134/s0032945224700498

R. Seiwa, M. Kato, K. Nakaguchi, Y. Sakai

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Neotype Designation for Coregonus fluviatilis (Salmonidae: Coregoninae) from the Only Known Museum Specimen 从唯一已知的博物馆标本中确定 Fluviatilis Coregonus（鲑科：Coregoninae）的新模式

IF 0.7 4区生物学

Journal of Ichthyology Pub Date : 2024-08-12 DOI: 10.1134/s0032945224700474

E. D. Vasil’eva, A. N. Matveev, D. V. Politov

引用次数: 0

Feeding Habits of the Patagonian Rockfish Sebastes oculatus (Sebastidae) in Central Patagonia, Atlantic Ocean 大西洋巴塔哥尼亚中部巴塔哥尼亚石首鱼（石首鱼科）的摄食习性

IF 0.7 4区生物学

Journal of Ichthyology Pub Date : 2024-08-12 DOI: 10.1134/s0032945224700486

M. S. Marcinkevicius

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Genetic Diversity and Population Structure of Cultured and Wild Barramundi Lates calcarifer (Latidae) in Taiwan 台湾养殖和野生肺鱼的遗传多样性和种群结构

IF 0.7 4区生物学

Journal of Ichthyology Pub Date : 2024-08-12 DOI: 10.1134/s0032945224700450

T. Y. Chen, A. Nazir, H. C. Lim, J. C. Shiao

{"title":"Genetic Diversity and Population Structure of Cultured and Wild Barramundi Lates calcarifer (Latidae) in Taiwan","authors":"T. Y. Chen, A. Nazir, H. C. Lim, J. C. Shiao","doi":"10.1134/s0032945224700450","DOIUrl":"https://doi.org/10.1134/s0032945224700450","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>Barramundi, or Asian seabass <i>Lates calcarifer</i>, is a commercially important food fish with a wide geographic distribution in the Indo-West Pacific region. Despite its economic significance, particularly in Taiwan, information on the sources of fertilized eggs, fry and stock management practices remains largely unavailable. To ensure sustainable exploitation and effective selective breeding programs, assessing the genetic diversity and population genetic structure of barramundi is crucial. This study investigated the genetic diversity and population genetic structure of three cultured populations (Chiayi A, Chiayi B, and Tainan) and one wild-caught population in Taiwan using mitochondrial DNA cytochrome <i>b</i> and eight microsatellite loci as genetic markers. The analysis of haplotype network revealed that all populations shared an ancestral haplotype, yet each population had its own unique haplotype. Notably, the wild and cultured populations showed the largest genetic distance. However, overall, the genetic distances among all populations were small and similar. This finding suggests potential gene exchange, possibly through broodstock exchange practices between farms. The valuable genetic information obtained from this study holds the potential to improve aquaculture programs through targeted breeding initiatives and inform the development of sustainable management policies for barramundi.</p>","PeriodicalId":48537,"journal":{"name":"Journal of Ichthyology","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2024-08-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142184772","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

Impacts of the High-Pressure Bratsk Hydroelectric Power Station on Fish Population of the Bratsk Reservoir 布拉茨克高压水电站对布拉茨克水库鱼类种群的影响

IF 0.7 4区生物学

Journal of Ichthyology Pub Date : 2024-08-06 DOI: 10.1134/s0032945224700231

Yu. V. Gerasimov, D. D. Pavlov, A. P. Strelnikova, I. V. Shlyapkin, E. S. Borisenko

{"title":"Impacts of the High-Pressure Bratsk Hydroelectric Power Station on Fish Population of the Bratsk Reservoir","authors":"Yu. V. Gerasimov, D. D. Pavlov, A. P. Strelnikova, I. V. Shlyapkin, E. S. Borisenko","doi":"10.1134/s0032945224700231","DOIUrl":"https://doi.org/10.1134/s0032945224700231","url":null,"abstract":"<p>Environmental and ecological effects of the dam of the high-pressure Bratsk Hydroelectric Power Station (HPS) on the fish population and the probability of fish downstream migration from the Bratsk Reservoir have been studied. It has been revealed that thermal stratification of the water column is a significant factor in the ecological differentiation of the fish population in the upper reaches of high-pressure hydroelectric plants. According to hydroacoustics data, most of the ichthyomass, consisting of “warm-water” representatives of the Percidae (65%) and Cyprinidae (22%) families, is concentrated in the relatively warm layer of the epilimnion. Juvenile fish from 30 to 50 mm in size (up to 70% of the total fish number in this layer) are also concentrated here. In the cold-water hypolimnion, the fish population is represented by large single individuals of whitefish (Coregoninae). The data on distribution of fish in the lower and upper reaches of the dam, fish nutrition patterns, growth rate, and the presence of injuries that occur when fish pass downstream through hydroelectric plant dams are presented. Revealed differences in the growth rate of perches from the upper and lower reaches are associated with their constant inhabiting of water masses with contrasting temperatures. Net catches in the lower reaches over the four seasons of research lack injured individuals. These facts prove the absence of mass downstream passage of fish through the Bratsk HPS dam. Juveniles of cyprinids and perches accumulate in the upper warm layer of 0–10 m, i.e. outside the zone of the intake flow formation, which makes their entrance to intake openings at a depth of more than 20 m hardly possible.</p>","PeriodicalId":48537,"journal":{"name":"Journal of Ichthyology","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2024-08-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141936270","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

The First Capture of a Leucistic Individual of the Greenland Halibut Reinhardtius hippoglossoides (Pleuronectidae) in the Waters off Northeastern Sakhalin (Sea of Okhotsk) 在萨哈林岛东北部海域（鄂霍次克海）首次捕获格陵兰比目鱼Reinhardtius hippoglossoides（Pleuronectidae）的白化个体

IF 0.7 4区生物学

Journal of Ichthyology Pub Date : 2024-08-06 DOI: 10.1134/s0032945224700334

Yu. N. Poltev, A. V. Luchenkov

引用次数: 0

Distribution, Size Composition and Feeding of the Barred Snailfish Crystallias matsushimae (Liparidae) in the Russian Zone of the Sea of Japan 日本海俄罗斯区条纹蜗牛鱼 Crystallias matsushimae (Liparidae) 的分布、大小组成和摄食情况

IF 0.7 4区生物学

Journal of Ichthyology Pub Date : 2024-08-06 DOI: 10.1134/s0032945224700346

S. F. Solomatov, O. I. Pushchina, N. L. Aseeva

引用次数: 0

Sexual Maturation of the Chub Mackerel Scomber colias (Scombridae) in the East-Central Atlantic 大西洋中东部鲐鱼（鲭科）的性成熟

IF 0.7 4区生物学

Journal of Ichthyology Pub Date : 2024-08-06 DOI: 10.1134/s0032945224020073

A. I. Nikitenko, D. V. Artemenkov, A. M. Orlov, A. N. Stroganov, V. A. Belyaev

{"title":"Sexual Maturation of the Chub Mackerel Scomber colias (Scombridae) in the East-Central Atlantic","authors":"A. I. Nikitenko, D. V. Artemenkov, A. M. Orlov, A. N. Stroganov, V. A. Belyaev","doi":"10.1134/s0032945224020073","DOIUrl":"https://doi.org/10.1134/s0032945224020073","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>Scientific monitoring of pelagic fish stocks in 2004–2005 and 2014–2017 provided information on characteristics of sexual maturation of Atlantic chub mackerel <i>Scomber colias</i> in the coastal waters of the Central-Eastern Atlantic. Based on these results we describe ecological and geographical variability of some biological characteristics of the species. Features of sexual maturation of females and males of the mackerel can be described by a logistic equation obtained in the <i>R</i> programming environment. Fork length, at which 50% of individuals aged 1+ are mature, is 18.4 cm for females and 20.0 cm for males; 100% of individuals are mature at age 3+ with a fork length of 32.3 and 30.8 cm for females and males, respectively. A high proportion of spawning chub mackerel individuals in the Central-Eastern Atlantic have been recorded from February to March and from June to July. Chub mackerel in the coastal waters of this region are similar in life cycle characteristics to the populations of the waters off the Canary Islands and the Madeira Archipelago, but differ from the populations of the waters off mainland Portugal, the Azores, South Africa, and the Bay of Biscay in faster sexual maturation and growth rates.</p>","PeriodicalId":48537,"journal":{"name":"Journal of Ichthyology","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2024-08-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141936271","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

Scopeloberyx shakhovskoyi, a New Species of Melamphaidae Family from the Atlantic Ocean Scopeloberyx shakhovskoyi，来自大西洋的 Melamphaidae 科新种

IF 0.7 4区生物学

Journal of Ichthyology Pub Date : 2024-08-06 DOI: 10.1134/s0032945224700292

A. N. Kotlyar

引用次数: 0