Journal of Ichthyology最新文献_第8页

Feeding Habits and Trophic Level of Juvenile Greater Amberjack, Seriola dumereili (Carangidae) in the Southern Waters of Korea 韩国南部水域大琥珀鱼（鲤科）幼鱼的摄食习性和营养级

IF 0.7 4区生物学

Journal of Ichthyology Pub Date : 2023-12-29 DOI: 10.1134/s0032945224010132

D. G. Kim, H. Y. Soh, G. W. Baeck

{"title":"Feeding Habits and Trophic Level of Juvenile Greater Amberjack, Seriola dumereili (Carangidae) in the Southern Waters of Korea","authors":"D. G. Kim, H. Y. Soh, G. W. Baeck","doi":"10.1134/s0032945224010132","DOIUrl":"https://doi.org/10.1134/s0032945224010132","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>Feeding habits and trophic level of juvenile greater amberjack, <i>Seriola dumerili</i> were studied using 170 specimens collected by set net fishery and lure fishing in the southern waters of Korea during July, August, September, October, and November 2022. The size of juvenile greater amberjack ranged from 17.5 to 49.9 cm in fork length. Juvenile greater amberjack was piscivorous predator that feed primarily on fish. We calculated the trophic level as 4.06 ± 0.80 for juvenile greater amberjack. Fishes were the main prey items for all size groups. Juvenile greater amberjack also showed size-related dietary shift from Japanese anchovy to jack mackerel. As the fork length of juvenile greater amberjack increase, the mean weight of prey per stomach tended to increased, while the mean number of preys per stomach was not significantly different. Fishes were the main prey items for summer and autumn. The main fish prey during summer and autumn was Japanese anchovy, but in the autumn, the Japanese anchovy portion decreased, and the jack mackerel portion increased. PERMANOVA analysis was used to examine seasonal and size-related changes in diet composition, which showed significant variations among size classes. Juvenile greater amberjack presumably feed on larger prey to meet their energy requirements.</p>","PeriodicalId":48537,"journal":{"name":"Journal of Ichthyology","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2023-12-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139067088","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

An Oldest Record of the Shark Cosmopolitodus planus (Lamnidae) from the Lower Miocene of the Sakhalin, Russia 俄罗斯萨哈林下中新世鲨鱼 Cosmopolitodus planus (Lamnidae) 的最古老记录

IF 0.7 4区生物学

Journal of Ichthyology Pub Date : 2023-12-29 DOI: 10.1134/s0032945224010144

T. P. Malyshkina, M. V. Nazarkin, A. V. Solovyow

引用次数: 0

Distribution, Ecology and Size Composition of the White-Blotched Skate Bathyraja maculata (Arhynchobatidae) in the Northeastern Sea of Okhotsk during the Hydrological Summer 夏季水文期间鄂霍次克海东北部白斑鳐 Bathyraja maculata (Arhynchobatidae) 的分布、生态和大小组成

IF 0.7 4区生物学

Journal of Ichthyology Pub Date : 2023-12-14 DOI: 10.1134/s0032945223050053

Yu. K. Kurbanov, A. V. Vinogradskaya

{"title":"Distribution, Ecology and Size Composition of the White-Blotched Skate Bathyraja maculata (Arhynchobatidae) in the Northeastern Sea of Okhotsk during the Hydrological Summer","authors":"Yu. K. Kurbanov, A. V. Vinogradskaya","doi":"10.1134/s0032945223050053","DOIUrl":"https://doi.org/10.1134/s0032945223050053","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">\u0000<b>Abstract</b>—</h3><p>Based on the materials of bottom trawl surveys, the data are presented on the features of distribution, thermal conditions of habitats and the size composition of the white-blotched skate <i>Bathyraja maculata</i> in the northeastern Sea of Okhotsk during the hydrological summer of 1998–2019. The main aggregations of the species were found in the area of the eastern slope of the TINRO depression north of 56° N. The vertical distribution area covered depths of 60–874 m. The temperature range of the near-bottom layer of water at which the species was encountered was 0–3.0°С. High values of relative abundance were typical for depths of 401–500 and 601–700 m, for relative biomass, up to 500 m. Juveniles of white-blotched skate were found near the lower boundary of the habitat (> 600 m), and large individuals inhabited the shelf and adjacent areas of the continental slope. Presumably, one of the spawning grounds of the species is located on the eastern slope of the TINRO depression.</p>","PeriodicalId":48537,"journal":{"name":"Journal of Ichthyology","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2023-12-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138629761","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

New Data on Biology of Siberian Stone Loach Barbatula toni (Nemacheilidae) in Langeri River (Sakhalin) 西伯利亚石鳅 Barbatula toni（Nemacheilidae）在兰杰里河（萨哈林岛）的生物学新数据

IF 0.7 4区生物学

Journal of Ichthyology Pub Date : 2023-12-14 DOI: 10.1134/s0032945223060073

E. A. Kirillova, P. I. Kirillov

引用次数: 0

Development of Schooling Behavior in Fish Ontogeny 鱼类个体发育过程中求学行为的发展

IF 0.7 4区生物学

Journal of Ichthyology Pub Date : 2023-12-14 DOI: 10.1134/s0032945223070111

A. O. Kasumyan, D. S. Pavlov

引用次数: 0

Problems and Prospects of Studying Schooling Behavior of Fish 研究鱼类求学行为的问题与前景

IF 0.7 4区生物学

Journal of Ichthyology Pub Date : 2023-12-14 DOI: 10.1134/s0032945223070159

A. O. Kasumyan, D. S. Pavlov

{"title":"Problems and Prospects of Studying Schooling Behavior of Fish","authors":"A. O. Kasumyan, D. S. Pavlov","doi":"10.1134/s0032945223070159","DOIUrl":"https://doi.org/10.1134/s0032945223070159","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>The problems and prospects of studying schooling behavior of fish have been considered. Areas that remain little developed or have controversial and contradictory results have been noted: the hydrodynamics and energetics of fish swimming in a school, the mechanisms of fish interaction and the dissemination of information within a school, the principles of forming a coordinated school response to external stimuli and the rapid decay of the reaction, interaction between different schools during their collision or when being part of large aggregations of many schools, patterns of rapid change in the forms of a school. It has been shown that there are no clear ideas about the formation of mechanisms in the ontogeny of fish that underlie coordinated schooling behavior. The sensory base of schooling behavior requires further study. The origin and evolution of schooling behavior and the formation of emergent properties of a school based on individual actions of fish remain at the level of assumptions and hypotheses. The interspecies differences in the schooling behavior of fish, the interaction of schooling fish with fishing gear and adaptation to them are poorly studied. Attention has been drawn to the need for verification in nature of information obtained in laboratory conditions and on aquarium fish that have undergone selection. The necessity of using new technologies, devices, methods of mathematical modeling and other approaches for the intensification of experimental research has been emphasized. Knowledge of the schooling behavior of fish is important for elucidating the general patterns of social behavior of large associations of animals. The development of research is hampered by the lack of generally accepted terminology and quantitative criteria for schooling behavior, which would make it possible to adequately assess, compare, and analyze it. An exhaustive definition of a fish school has been given.</p>","PeriodicalId":48537,"journal":{"name":"Journal of Ichthyology","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2023-12-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138689742","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

Hydrodynamics and Energetics of Schooling Swimming and Migration of Schooling Fish 鱼群游泳和洄游的水动力学和能量学

IF 0.7 4区生物学

Journal of Ichthyology Pub Date : 2023-12-14 DOI: 10.1134/s0032945223070068

A. O. Kasumyan, D. S. Pavlov

{"title":"Hydrodynamics and Energetics of Schooling Swimming and Migration of Schooling Fish","authors":"A. O. Kasumyan, D. S. Pavlov","doi":"10.1134/s0032945223070068","DOIUrl":"https://doi.org/10.1134/s0032945223070068","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>Ideas about the hydrodynamic and energetic benefits of swimming in a school have been considered. The reduction in energy cost for locomotion in a school is achieved due to the interference of microvortices generated by fish moving or staying in the current (hydrodynamic hypothesis of schooling swimming). The effect is most pronounced if the fish are of the same size, have similar locomotor capabilities, and show consistency when changing the mode or direction of swimming. It is also believed that the hydrodynamic effect of a school is realized only when partners in intra-school subgroups interact. Increased endurance of fish when in a school compared to single individuals has been experimentally confirmed. Energy costs for swimming while in a school can be lower by about 10–20%. Most of the fish that make long migrations are schooling fish, or form schools for the period of migration. Combining small schools into larger schools and school aggregations (mega-schools) facilitates finding optimal paths and improves the accuracy of migrations. Migration in schools reduces the vulnerability of fish to predators.</p>","PeriodicalId":48537,"journal":{"name":"Journal of Ichthyology","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2023-12-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138689739","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

Schooling Behavior of Fish: General Ideas, Terms and Concepts, Prevalence, Applied Aspects 鱼类的学校行为：一般概念、术语和概念、普遍性、应用方面

IF 0.7 4区生物学

Journal of Ichthyology Pub Date : 2023-12-14 DOI: 10.1134/s0032945223070020

A. O. Kasumyan, D. S. Pavlov

引用次数: 0

European River Lamprey Lampetra fluviatilis (Petromyzontidae) of the Pskov Lakeland: Current State of Isolated Populations 普斯科夫湖区的欧洲河鳗 Lampetra fluviatilis（Petromyzontidae）：孤立种群的现状

IF 0.7 4区生物学

Journal of Ichthyology Pub Date : 2023-12-14 DOI: 10.1134/s0032945223060188

A. O. Zvezdin, A. V. Kucheryavyy, A. V. Kolotei, N. V. Polyakova, D. S. Pavlov

{"title":"European River Lamprey Lampetra fluviatilis (Petromyzontidae) of the Pskov Lakeland: Current State of Isolated Populations","authors":"A. O. Zvezdin, A. V. Kucheryavyy, A. V. Kolotei, N. V. Polyakova, D. S. Pavlov","doi":"10.1134/s0032945223060188","DOIUrl":"https://doi.org/10.1134/s0032945223060188","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>Small freshwater (resident) populations of the European river lamprey <i>Lampetra</i> <i>fluviatilis</i> from an isolated from the sea upper part of a river system with numerous lakes (the upper reaches of tributaries of the Daugava River and Lake Peipus, Pskov Oblast, Russia) have been studied. Adult individuals of the lamprey have been attributed to common and large size groups; adults are similar to other resident lamprey from the Baltic Sea basin. The presence of larvae of different size and age groups indicates regular spawning of the European river lamprey in the studied watersheds. Analysis of the modern and historical (before the isolation) distribution of lamprey revealed a reduction in habitats and a decrease in the number of individuals. Dam-associated disruption of migration routes led to the disappearance of anadromous form, and consequently, disappearance of resident lamprey from most of the studied waterbodies. We attribute the decrease in the number of rivers inhabited by lamprey and abundance of the lamprey both to anthropogenic factors (direct blocking of an access of anadromous form of the lamprey to spawning grounds by hydraulic construction) and to the characteristics of the studied area. The richness of the river system with lentic waterbodies makes it suitable for lamprey inhabitation with an influx of large anadromous individuals capable of crossing such reservoirs in search of spawning sites.</p>","PeriodicalId":48537,"journal":{"name":"Journal of Ichthyology","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2023-12-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138627804","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

Influence of Hypothyroidism on the Variability of Carotenoid Coloration in Amatitlania nigrofasciata Females (Cichlidae) 甲状腺机能减退对雌性 Amatitlania nigrofasciata（慈鲷科）类胡萝卜素颜色变化的影响

IF 0.7 4区生物学

Journal of Ichthyology Pub Date : 2023-12-14 DOI: 10.1134/s0032945223060139

D. V. Prazdnikov

引用次数: 0