Pub Date : 2024-05-14DOI: 10.1134/s0032945224020061
V. V. Napazakov
Abstract
The results of analysis on the feeding patterns and assessment of the trophic levels and niches in two Zoarcidae species Bothrocara brunneum and B. zestum from the deep-water areas in the Sea of Okhotsk and the Pacific Ocean off the Lesser Kuril Ridge have been reported. Both species feed on various benthic and mesobenthic forage organisms including crustaceans, mesopelagic fishes, cephalopods, bivalved mollusks, polychaetes, and echinoderms. Despite the dominant food component variability across different water areas, crustaceans represent the major food group. In addition, both fish species have similar food sources and, therefore, trophic niches. It is proven by estimation with the standard ellipse area method via the Bayesian probability, showing rather similar widths of trophic niches: 17.7 for B. zestum and 16.6 for B. brunneum. The actual values for stable nitrogen isotope ratios (δ15N) in food components indicate a wide range of trophic levels in the analyzed species: from 2.08 to 4.36 in B. zestum and from 1.97 to 4.42 in B. brunneum, which can prove their plasticity in selecting the food items. The ranges of values for the stable carbon isotope ratios (δ13C) in food components indicating the basal food sources reached 15.04 to 23.43‰ for B. zestum and 15.07 to 23.43‰ for B. brunneum. The survey-based new information on two species feeding was obtained to determine their roles in the trophic structures of ecosystems in the studied water areas.
{"title":"A Comparative Study of Feeding Ecology and Trophic Relationships of Bothrocara brunneum and B. zestum (Zoarcidae) from Northwest Pacific Deep-Sea Ecosystems","authors":"V. V. Napazakov","doi":"10.1134/s0032945224020061","DOIUrl":"https://doi.org/10.1134/s0032945224020061","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>The results of analysis on the feeding patterns and assessment of the trophic levels and niches in two Zoarcidae species <i>Bothrocara brunneum</i> and <i>B. zestum</i> from the deep-water areas in the Sea of Okhotsk and the Pacific Ocean off the Lesser Kuril Ridge have been reported. Both species feed on various benthic and mesobenthic forage organisms including crustaceans, mesopelagic fishes, cephalopods, bivalved mollusks, polychaetes, and echinoderms. Despite the dominant food component variability across different water areas, crustaceans represent the major food group. In addition, both fish species have similar food sources and, therefore, trophic niches. It is proven by estimation with the standard ellipse area method via the Bayesian probability, showing rather similar widths of trophic niches: 17.7 for <i>B. zestum</i> and 16.6 for <i>B. brunneum</i>. The actual values for stable nitrogen isotope ratios (δ<sup>15</sup>N) in food components indicate a wide range of trophic levels in the analyzed species: from 2.08 to 4.36 in <i>B. zestum</i> and from 1.97 to 4.42 in <i>B. brunneum</i>, which can prove their plasticity in selecting the food items. The ranges of values for the stable carbon isotope ratios (δ<sup>13</sup>C) in food components indicating the basal food sources reached 15.04 to 23.43‰ for <i>B. zestum</i> and 15.07 to 23.43‰ for <i>B. brunneum</i>. The survey-based new information on two species feeding was obtained to determine their roles in the trophic structures of ecosystems in the studied water areas.</p>","PeriodicalId":48537,"journal":{"name":"Journal of Ichthyology","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2024-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140941214","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}
Pub Date : 2024-05-14DOI: 10.1134/s0032945224010077
V. V. Panchenko, A. A. Matveev
Abstract—
It is shown that in Peter the Great Bay, the southern part of the range of the threaded sculpin Gymnocanthus pistilliger, its maximum size is larger than in the more northern waters off western Kamchatka. Reliable records of the species in trawl catches begin when individuals reach an absolute body length of 20 cm. Since males reach smaller sizes than females, their records, especially in the north, are less comprehensive. The growth rates of fish in Peter the Great Bay are higher, which is why the fish of the same age are larger here than in the waters off the Kamchatka Peninsula. The weight of individuals of the same size in the bay is also larger. The best growth rates in the area located to the south is determined by more favorable conditions of the aquatic environment. Despite the differences in growth rates, the maximum age of fish reached in populations is similar. The sex ratio with a predominance of females is also similar.
{"title":"Comparative Characteristics of the Size Parameters of the Threaded Sculpin Gymnocanthus pistilliger (Cottidae) in Peter the Great Bay (Sea of Japan) and off the Western Coast of Kamchatka (Sea of Okhotsk)","authors":"V. V. Panchenko, A. A. Matveev","doi":"10.1134/s0032945224010077","DOIUrl":"https://doi.org/10.1134/s0032945224010077","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">\u0000<b>Abstract</b>—</h3><p>It is shown that in Peter the Great Bay, the southern part of the range of the threaded sculpin <i>Gymnocanthus pistilliger</i>, its maximum size is larger than in the more northern waters off western Kamchatka<b>.</b> Reliable records of the species in trawl catches begin when individuals reach an absolute body length of 20 cm. Since males reach smaller sizes than females, their records, especially in the north, are less comprehensive. The growth rates of fish in Peter the Great Bay are higher, which is why the fish of the same age are larger here than in the waters off the Kamchatka Peninsula. The weight of individuals of the same size in the bay is also larger. The best growth rates in the area located to the south is determined by more favorable conditions of the aquatic environment. Despite the differences in growth rates, the maximum age of fish reached in populations is similar. The sex ratio with a predominance of females is also similar.</p>","PeriodicalId":48537,"journal":{"name":"Journal of Ichthyology","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2024-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140941219","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}
Pub Date : 2024-05-14DOI: 10.1134/s0032945224020152
E. D. Vasil’eva, B. A. Levin, V. P. Vasil’ev
Abstract
Based on a comparative study of the variability of external morphological characters, color features, craniological and karyological characteristics of spined loaches of the genus Cobitis from the water bodies of the Colchis Lowland, analysis of data on the geological history of the region and zoogeographical data, it was concluded that the populations of the eastern Black Sea coast north of the Meskheti Ridge of the Lesser Caucasus belong to an independent species C. osurgeticus. It differs from C. satunini, which inhabits the water bodies of Adjara, in the structure of the karyotype, a number of proportions of the neurocranium and individual skull bones, a shorter caudal peduncle, and the position of the dorsal fin. The revealed phylogenetic proximity of the mitochondrial genes of the two species may be associated with diploid–polyploid relationships and interspecific hybridization in the genus Cobitis and suggests the need for further studies of the populations of the eastern coast of the Black Sea, including the spined loaches of Abkhazia, for which a hybrid origin via crossing with C. tanaitica cannot be preliminarily excluded. The neotype of C. osurgeticus is designated, and the species diagnosis is presented.
摘要根据对科尔奇斯低地水体中刺鳅属的外部形态特征、颜色特征、头盖骨和核型特征的变异性进行的比较研究，以及对该地区地质历史数据和动物地理数据的分析，得出结论认为，小高加索梅斯赫季海脊以北的黑海东部沿海种群属于一个独立的物种 C. osurgeticus。它与栖息在阿扎尔水体中的 C. satunini 的区别在于核型结构、神经颅骨和单个头骨的一些比例、较短的尾柄和背鳍的位置。所揭示的两个物种线粒体基因的系统发育近似性可能与钴炎属的二倍体-多倍体关系和种间杂交有关，并表明有必要对黑海东海岸的种群（包括阿布哈兹的刺鳅）进行进一步研究，因为不能初步排除与 C. tanaitica 杂交的杂交起源。指定了 C. osurgeticus 的新原型，并进行了物种诊断。
{"title":"Dynamics of Diversity of Spined Loaches of Genus Cobitis (Cobitidae) of Trans-Caucasus in the Anthropogenic Period According to the Data of Museum Collections. III. Morpho-genetic Variability, Taxonomic Status and Diagnostic Characters of Spined Loaches of the Black Sea Coast North of the Meskheti Ridge of the Lesser Caucasus","authors":"E. D. Vasil’eva, B. A. Levin, V. P. Vasil’ev","doi":"10.1134/s0032945224020152","DOIUrl":"https://doi.org/10.1134/s0032945224020152","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>Based on a comparative study of the variability of external morphological characters, color features, craniological and karyological characteristics of spined loaches of the genus <i>Cobitis</i> from the water bodies of the Colchis Lowland, analysis of data on the geological history of the region and zoogeographical data, it was concluded that the populations of the eastern Black Sea coast north of the Meskheti Ridge of the Lesser Caucasus belong to an independent species <i>C. osurgeticus</i>. It differs from <i>C. satunini</i>, which inhabits the water bodies of Adjara, in the structure of the karyotype, a number of proportions of the neurocranium and individual skull bones, a shorter caudal peduncle, and the position of the dorsal fin. The revealed phylogenetic proximity of the mitochondrial genes of the two species may be associated with diploid–polyploid relationships and interspecific hybridization in the genus <i>Cobitis</i> and suggests the need for further studies of the populations of the eastern coast of the Black Sea, including the spined loaches of Abkhazia, for which a hybrid origin via crossing with <i>C. tanaitica</i> cannot be preliminarily excluded. The neotype of <i>C. osurgeticus</i> is designated, and the species diagnosis is presented.</p>","PeriodicalId":48537,"journal":{"name":"Journal of Ichthyology","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2024-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140941221","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}
Pub Date : 2024-05-14DOI: 10.1134/s0032945224020103
Yu. N. Poltev, A. V. Luchenkov
Abstract—
A case of bulk harvesting the shortraker rockfish Sebastes borealis in the water masses off the northeastern tip of the Sakhalind Island as incedental bycatch in the Greenland halibut Reinhardtius hippoglossoides fishery at the depths of between 612–670 m has been reported. The Smith’s fish-body fork length varied in the range of 34–87 cm (69.6 ± 0.3 cm, on average). The catch composition was based on the specimens of 66.1–74.0 cm in length (69.7%). The spawning site of larva occurrence is probably located northward from the Sakhalin Island.
{"title":"On Case of Bulk Harvesting the Shortraker Rockfish Sebastes borealis (Sebastidae) in Sea of Okhotsk off Northeastern Tip of Sakhalin Island","authors":"Yu. N. Poltev, A. V. Luchenkov","doi":"10.1134/s0032945224020103","DOIUrl":"https://doi.org/10.1134/s0032945224020103","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">\u0000<b>Abstract</b>—</h3><p>A case of bulk harvesting the shortraker rockfish <i>Sebastes borealis</i> in the water masses off the northeastern tip of the Sakhalind Island as incedental bycatch in the Greenland halibut <i>Reinhardtius hippoglossoides</i> fishery at the depths of between 612–670 m has been reported. The Smith’s fish-body fork length varied in the range of 34–87 cm (69.6 ± 0.3 cm, on average). The catch composition was based on the specimens of 66.1–74.0 cm in length (69.7%). The spawning site of larva occurrence is probably located northward from the Sakhalin Island.</p>","PeriodicalId":48537,"journal":{"name":"Journal of Ichthyology","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2024-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140941215","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}
Pub Date : 2024-03-27DOI: 10.1134/s0032945224700061
W. Hmila, W. Khoufi, A. Abdaoui, K. Mahé, C. Jabeur
Abstract
Growth parameters of any species are fundamental for eco-biological and dynamic studies. Since the quality of these parameters’ estimations affect species stock assessment directly, growth analysis should be improved. Many functions are used for growth modeling, but the most commonly used model in marine stock assessment is the von Bertalanffy growth function. In order to enhance the estimation of growth parameters of Pomatomus saltatrix (Linnaeus, 1766), the von Bertalanffy growth function was determined via the Markov Chain Monte Carlo. In total, 288 individuals (158 females, 103 males, and 27 with undetermined sex) were collected during 12 months, from July 2020 to June 2021, along the eastern coast of Tunisia in the Mediterranean Sea (Monastir, Sousse and Mahdia). The individual ageing data was obtained from the examination of whole sagittal otoliths with binoculars under reflected light. The length–weight relationships (total weight (TW) ± 0.01 g; total length (TL) ± 0.1 cm) were TW = 0.011 × TL2.974 (r2 = 0.952, p < 0.05) for females, TW = 0.014 × TL2.897(r2 = 0.926, p < 0.05) for males and TW = 0.093 × TL2.205 (r2 = 0.819, p < 0.05) for undetermined sex. The adjusted with the Markov Chain Monte Carlo von Bertalanffy growth parameters were TL∞ = 31.63 ± 1.32 cm, K = 0.46 ± 0.04 year–1 for females and TL∞ = 30.33 ± 1.31 cm, K = 0.49 ± 0.05 year–1 for males. The gathered biological information will be useful for an ulterior stock assessment and fishery management of P. saltatrix in Tunisian waters.
{"title":"The Growth of Pomatomus saltatrix (Pomatomidae) from the Southeastern Coast of the Mediterranean Sea","authors":"W. Hmila, W. Khoufi, A. Abdaoui, K. Mahé, C. Jabeur","doi":"10.1134/s0032945224700061","DOIUrl":"https://doi.org/10.1134/s0032945224700061","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>Growth parameters of any species are fundamental for eco-biological and dynamic studies. Since the quality of these parameters’ estimations affect species stock assessment directly, growth analysis should be improved. Many functions are used for growth modeling, but the most commonly used model in marine stock assessment is the von Bertalanffy growth function. In order to enhance the estimation of growth parameters of <i>Pomatomus saltatrix</i> (Linnaeus, 1766), the von Bertalanffy growth function was determined via the Markov Chain Monte Carlo. In total, 288 individuals (158 females, 103 males, and 27 with undetermined sex) were collected during 12 months, from July 2020 to June 2021, along the eastern coast of Tunisia in the Mediterranean Sea (Monastir, Sousse and Mahdia). The individual ageing data was obtained from the examination of whole sagittal otoliths with binoculars under reflected light. The length–weight relationships (total weight (<i>TW</i>) ± 0.01 g; total length (<i>TL</i>) ± 0.1 cm) were <i>TW</i> = 0.011 × <i>TL</i><sup>2.974</sup> (<i>r</i><sup>2</sup> = 0.952, <i>p</i> < 0.05) for females, <i>TW</i> = 0.014 × <i>TL</i><sup>2.897</sup>(<i>r</i><sup>2</sup> = 0.926, <i>p</i> < 0.05) for males and <i>TW</i> = 0.093 × <i>TL</i><sup>2.205</sup> (<i>r</i><sup>2</sup> = 0.819, <i>p</i> < 0.05) for undetermined sex. The adjusted with the Markov Chain Monte Carlo von Bertalanffy growth parameters were <i>TL</i><sub>∞</sub> = 31.63 ± 1.32 cm, <i>K</i> = 0.46 ± 0.04 year<sup>–1</sup> for females and <i>TL</i><sub>∞</sub> = 30.33 ± 1.31 cm, <i>K</i> = 0.49 ± 0.05 year<sup>–1</sup> for males. The gathered biological information will be useful for an ulterior stock assessment and fishery management of <i>P. saltatrix</i> in Tunisian waters.</p>","PeriodicalId":48537,"journal":{"name":"Journal of Ichthyology","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2024-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140316187","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}
Pub Date : 2024-03-27DOI: 10.1134/s0032945224700073
B. T. Villarins, L. G. Fischer, J. R. Martins, M. M. Mincarone
Abstract—
This paper reports on the first record of the bristlemouth Margrethia valentinae Parin, 1982 (Stomiiformes: Gonostomatidae) in the western South Atlantic, based on a single specimen (NPM 6856, standard length 52 mm) bottom trawled off Santa Catarina, Brazil, at 26°23′25′′ S, 46°01′50′′ W, 400 m depth, on December 13, 2000. Morphometric and meristic data for M. valentinae and its congener, M. obtusirostra, are given and compared to those reported in the literature. Remarks on the taxonomy of the genus Margrethia and an overview on its distribution are also provided.
{"title":"First Record of Margrethia valentinae (Gonostomatidae) in the Western South Atlantic, with Remarks on the Taxonomy and Distribution of the Genus Margrethia","authors":"B. T. Villarins, L. G. Fischer, J. R. Martins, M. M. Mincarone","doi":"10.1134/s0032945224700073","DOIUrl":"https://doi.org/10.1134/s0032945224700073","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract—</h3><p>This paper reports on the first record of the bristlemouth <i>Margrethia valentinae</i> Parin, 1982 (Stomiiformes: Gonostomatidae) in the western South Atlantic, based on a single specimen (NPM 6856, standard length 52 mm) bottom trawled off Santa Catarina, Brazil, at 26°23′25′′ S, 46°01′50′′ W, 400 m depth, on December 13, 2000. Morphometric and meristic data for <i>M. valentinae</i> and its congener, <i>M. obtusirostra</i>, are given and compared to those reported in the literature. Remarks on the taxonomy of the genus <i>Margrethia</i> and an overview on its distribution are also provided.</p>","PeriodicalId":48537,"journal":{"name":"Journal of Ichthyology","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2024-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140316505","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}
Pub Date : 2024-03-27DOI: 10.1134/s003294522470005x
M. Giusti, M. Angiolillo, I. Consalvo, B. di Lorenzo, F. Enrichetti, M. Toma, A. Pazzini, A. Caro, L. Tunesi
Abstract
An remotely operated vehicle survey conducted in three Canyon heads of the Ligurian Sea (northwestern Mediterranean Sea) in 2022 documented the presence of the boa dragonfish, Stomias boa (Risso, 1810), belonging to the family Stomiidae. Overall, 112 specimens of this meso- and bathypelagic species were primarily observed at depths ranging from 350 to 400 m, with the highest number recorded in Bergeggi (n = 59, in a single dive). This study significantly contributes to our understanding of the behaviour of S. boa by providing novel insights, including the description of a yawn-like action. Furthermore, by utilizing data from public geodatabases and incorporating new records, an updated distribution map of S. boa in the Mediterranean Sea was generated, encompassing a total of 2266 specimens and 1443 occurrence points, indicating a widespread presence of this species throughout the Mediterranean Sea. These findings contribute to the understanding of the species abundance and behaviour to environmental stimuli in deep-sea Canyon ecosystems.
{"title":"Distribution and in vivo Observations of the Boa Dragonfish Stomias boa (Stomiidae) in Deep-Sea Canyon Ecosystems of the Northwestern Mediterranean Sea","authors":"M. Giusti, M. Angiolillo, I. Consalvo, B. di Lorenzo, F. Enrichetti, M. Toma, A. Pazzini, A. Caro, L. Tunesi","doi":"10.1134/s003294522470005x","DOIUrl":"https://doi.org/10.1134/s003294522470005x","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>An remotely operated vehicle survey conducted in three Canyon heads of the Ligurian Sea (northwestern Mediterranean Sea) in 2022 documented the presence of the boa dragonfish, <i>Stomias boa</i> (Risso, 1810), belonging to the family Stomiidae. Overall, 112 specimens of this meso- and bathypelagic species were primarily observed at depths ranging from 350 to 400 m, with the highest number recorded in Bergeggi (<i>n</i> = 59, in a single dive). This study significantly contributes to our understanding of the behaviour of <i>S. boa</i> by providing novel insights, including the description of a yawn-like action. Furthermore, by utilizing data from public geodatabases and incorporating new records, an updated distribution map of <i>S. boa</i> in the Mediterranean Sea was generated, encompassing a total of 2266 specimens and 1443 occurrence points, indicating a widespread presence of this species throughout the Mediterranean Sea. These findings contribute to the understanding of the species abundance and behaviour to environmental stimuli in deep-sea Canyon ecosystems.</p>","PeriodicalId":48537,"journal":{"name":"Journal of Ichthyology","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2024-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140316186","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}
Pub Date : 2024-03-27DOI: 10.1134/s0032945224700036
F. Gallo-Cardozo, M. Maldonado, M. Careaga, F. M. Carvajal-Vallejos
Abstract
A new species of piranha, in the genus Serrasalmus (Characiformes, Serrasalmidae), is described from tributaries of the upper Madeira River drainage (Bolivian Amazon Basin). This new species exhibits a similar caudal-fin color like that observed in S. hollandi, and review of the literature suggested that former studies have misidentified these two species. The new species can be diagnosed morphologically from other congeners, but genetic variation of the COI sequence data showed little difference (~1%) from similar, morphologically recognized species. Since Serrasalmus species are widespread and morphologically difficult to identify, a key for identifying Bolivian species of this genus is presented.
摘要：本文描述了马德拉河上游支流（玻利维亚亚马逊河流域）中的一种食人鱼新种，该种食人鱼属于Serrasalmus属（鱼形目，Serrasalmidae）。该新物种的尾鳍颜色与 S. hollandi 的尾鳍颜色相似。从形态上看，该新种可与其他同系物种相鉴别，但 COI 序列数据的遗传变异显示，该新种与形态学上公认的相似物种差异很小（约 1%）。由于 Serrasalmus 物种分布广泛，且形态上难以识别，因此本文提出了一个识别该属玻利维亚种的关键方法。
{"title":"A New Species of Piranha (Serrasalmus, Serrasalmidae) from the Upper Madeira River System, Amazon Basin, Bolivia","authors":"F. Gallo-Cardozo, M. Maldonado, M. Careaga, F. M. Carvajal-Vallejos","doi":"10.1134/s0032945224700036","DOIUrl":"https://doi.org/10.1134/s0032945224700036","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>A new species of piranha, in the genus <i>Serrasalmus</i> (Characiformes, Serrasalmidae), is described from tributaries of the upper Madeira River drainage (Bolivian Amazon Basin). This new species exhibits a similar caudal-fin color like that observed in <i>S. hollandi</i>, and review of the literature suggested that former studies have misidentified these two species. The new species can be diagnosed morphologically from other congeners, but genetic variation of the <i>COI</i> sequence data showed little difference (~1%) from similar, morphologically recognized species. Since <i>Serrasalmus</i> species are widespread and morphologically difficult to identify, a key for identifying Bolivian species of this genus is presented.</p>","PeriodicalId":48537,"journal":{"name":"Journal of Ichthyology","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2024-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140316442","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}
Pub Date : 2024-03-27DOI: 10.1134/s0032945224700048
T. V. Gavruseva, T. B. Sigacheva
Abstract
The aim of the present study was to conduct the comparative analysis of the set of biochemical and histopathological parameters of the goby Neogobius melanostomus (Pallas, 1814) and the knout goby Mesogobius batrachocephalus (Pallas, 1814) collected from Apollonova Bay (the Black Sea, Sevastopol). The biochemical analyses performed in the tissues of two fish species revealed shifting in the prooxidant-antioxidant reactions towards the lipid peroxidation processes in liver, illustrated decreased activity of alanine aminotransferase and alkaline phosphatase in the organ and its increase in serum of the round goby, thus showing more pronounced oxidative damages of hepatocytes as compared to the knout goby and was confirmed histologically. Necrosis of single hepatocytes was detected in 44.44% of the round goby in contrast to 28% in the knout goby. The histopathological studies of gills, kidneys and liver revealed 22 alterations in the round goby and 18 in the knout goby, that belonged to five types of patterns: circulatory disorders, inflammatory reactions, progressive and regressive changes, benign tumours. In liver (lipoid vacuolization of hepatocytes) and kidney (vacuolization and hyaline-droplet degeneration of nephrocytes, nephrocalcinosis, local necrosis of the renal tubules) regressive changes dominated and were registered as much more common for the round goby. The most histopathological lesions in gobies’ gills (hyperplasia of the respiratory epithelium and fusion of the gill lamellae) were found progressive and related to the compensatory-adaptive reactions. Thus, the obtained results indicate a moderate chronic toxic effects of contaminants on fish in Apollonova Bay, and testify greater sensitivity of the round goby to the level of mixed pollution /Cu content in this water body, and hence make it more preferable for biodiagnostics throughout the water regions. Based on our researches, we can recommend the joint application of biochemical and histopathological parameters of two goby species to ensure the correct interpretation in bioindication studies.
{"title":"Comparative Study of Biochemical and Histopathological Parameters of Two Black Sea Goby Species","authors":"T. V. Gavruseva, T. B. Sigacheva","doi":"10.1134/s0032945224700048","DOIUrl":"https://doi.org/10.1134/s0032945224700048","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>The aim of the present study was to conduct the comparative analysis of the set of biochemical and histopathological parameters of the goby <i>Neogobius melanostomus</i> (Pallas, 1814) and the knout goby <i>Mesogobius batrachocephalus</i> (Pallas, 1814) collected from Apollonova Bay (the Black Sea, Sevastopol). The biochemical analyses performed in the tissues of two fish species revealed shifting in the prooxidant-antioxidant reactions towards the lipid peroxidation processes in liver, illustrated decreased activity of alanine aminotransferase and alkaline phosphatase in the organ and its increase in serum of the round goby, thus showing more pronounced oxidative damages of hepatocytes as compared to the knout goby and was confirmed histologically. Necrosis of single hepatocytes was detected in 44.44% of the round goby in contrast to 28% in the knout goby. The histopathological studies of gills, kidneys and liver revealed 22 alterations in the round goby and 18 in the knout goby, that belonged to five types of patterns: circulatory disorders, inflammatory reactions, progressive and regressive changes, benign tumours. In liver (lipoid vacuolization of hepatocytes) and kidney (vacuolization and hyaline-droplet degeneration of nephrocytes, nephrocalcinosis, local necrosis of the renal tubules) regressive changes dominated and were registered as much more common for the round goby. The most histopathological lesions in gobies’ gills (hyperplasia of the respiratory epithelium and fusion of the gill lamellae) were found progressive and related to the compensatory-adaptive reactions. Thus, the obtained results indicate a moderate chronic toxic effects of contaminants on fish in Apollonova Bay, and testify greater sensitivity of the round goby to the level of mixed pollution /Cu content in this water body, and hence make it more preferable for biodiagnostics throughout the water regions. Based on our researches, we can recommend the joint application of biochemical and histopathological parameters of two goby species to ensure the correct interpretation in bioindication studies.</p>","PeriodicalId":48537,"journal":{"name":"Journal of Ichthyology","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2024-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140316091","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}
Pub Date : 2024-03-27DOI: 10.1134/s0032945224700012
C. Assis, P. N. Coelho, T. de F. Ramos Guimarães, K. L. Souza, W. R. Ferreira, L. Marcon, J. A. Dergam
Abstract
Serrasalmus brandtii is native from the São Francisco River Basin. However, this species has been introduced in numerous other watersheds. Here we report the first occurrences of S. brandtii and its dispersal in the Doce River Basin, in southeastern Brazil. In addition, we discuss the possible impacts of the species on native fish assemblages of this region. The individuals were captured during four years of aquatic biodiversity monitoring (2018–2022) after the Fundão mining ore tailing collapse in 2015. Data from SpeciesLink and literature were used to complement the dispersal history in the Doce River Basin. Our results show that the species occurred in nine localities in the lower portion of the watershed. The first record occurred in 1987, in the Santa Maria do Doce River, in the State of Espírito Santo, Brazil. The establishment of S. brandtii in the watershed poses a real threat to native species, aggravating the effects of other anthropogenic impacts.
摘要Serrasalmus brandtii原产于圣弗朗西斯科河流域。然而，该物种已被引入其他许多流域。在此，我们报告了 S. brandtii 在巴西东南部多塞河流域的首次出现及其扩散情况。此外，我们还讨论了该物种对该地区本地鱼类可能造成的影响。这些个体是在 2015 年 Fundão 采矿矿石尾矿坍塌后四年（2018-2022 年）的水生生物多样性监测期间捕获的。来自 SpeciesLink 和文献的数据被用来补充多塞河流域的扩散历史。我们的结果显示，该物种出现在流域下游的九个地方。第一个记录出现在1987年巴西圣埃斯皮里图州的圣玛丽亚多斯河（Santa Maria do Doce River）。S.brandtii在该流域的出现对本地物种构成了真正的威胁，加剧了其他人为影响的后果。
{"title":"The Dispersal of the White Piranha, Serrasalmus brandtii (Serrasalmidae), a Non-Native Predator in the Doce River Basin, Southeastern Brazil","authors":"C. Assis, P. N. Coelho, T. de F. Ramos Guimarães, K. L. Souza, W. R. Ferreira, L. Marcon, J. A. Dergam","doi":"10.1134/s0032945224700012","DOIUrl":"https://doi.org/10.1134/s0032945224700012","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p><i>Serrasalmus brandtii</i> is native from the São Francisco River Basin. However, this species has been introduced in numerous other watersheds. Here we report the first occurrences of <i>S. brandtii</i> and its dispersal in the Doce River Basin, in southeastern Brazil. In addition, we discuss the possible impacts of the species on native fish assemblages of this region. The individuals were captured during four years of aquatic biodiversity monitoring (2018–2022) after the Fundão mining ore tailing collapse in 2015. Data from SpeciesLink and literature were used to complement the dispersal history in the Doce River Basin. Our results show that the species occurred in nine localities in the lower portion of the watershed. The first record occurred in 1987, in the Santa Maria do Doce River, in the State of Espírito Santo, Brazil. The establishment of <i>S. brandtii</i> in the watershed poses a real threat to native species, aggravating the effects of other anthropogenic impacts.</p>","PeriodicalId":48537,"journal":{"name":"Journal of Ichthyology","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2024-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140316251","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}
扫码关注我们
求助内容：
应助结果提醒方式：
京公网安备 11010802042870号