Kangqi Zhou, Zhong Chen, Junqi Qin, Yin Huang, Xuesong Du, Caiqun Zhang, Xianhui Pan, Yong Lin
A 60-day culture in brackish water (0, 3, 5, 7, 9, and 11 ppt) was conducted to study the effects of salinity on muscle nutrition, fatty acid composition, and anabolic metabolism of blue tilapia Oreochromis aureus. Current research showed that WGR, SGR, and FCR indicators of tilapia were better improved in brackish water. In addition, the physical properties of O. aureus muscle demonstrated a positive correlation with salinity levels. The content of amino acids and fatty acids in O. aureus muscles grown under salinity was higher than that in freshwater (P > 0.05). Venn analysis showed that 2343 common differentially expressed genes (DEGs) were identified in the four groups (0, 3, 7, and 11 ppt), of which 767 were up-regulated and 1576 were down-regulated. GO and KEGG analysis revealed 39 significant pathways, mainly including unsaturated fatty acid biosynthesis, fatty acid elongation, and α-linolenic acid metabolism. The heat map and trend analysis showed that the expression levels of key genes involved in the physiological processes of ELOVL, SPLA2, and FADS2 in the test group were significantly higher than those in the control group (P > 0.05). The above results suggested that O. aureus can not only adapt to the saline habitat but also improve muscle quality by regulating the body’s metabolic pathways.
{"title":"Effects of Salinity on Muscle Nutrition, Fatty Acid Composition, and Substance Anabolic Metabolism of Blue Tilapia Oreochromis aureus","authors":"Kangqi Zhou, Zhong Chen, Junqi Qin, Yin Huang, Xuesong Du, Caiqun Zhang, Xianhui Pan, Yong Lin","doi":"10.1155/2024/5549406","DOIUrl":"10.1155/2024/5549406","url":null,"abstract":"<p>A 60-day culture in brackish water (0, 3, 5, 7, 9, and 11 ppt) was conducted to study the effects of salinity on muscle nutrition, fatty acid composition, and anabolic metabolism of blue tilapia <i>Oreochromis aureus</i>. Current research showed that WGR, SGR, and FCR indicators of tilapia were better improved in brackish water. In addition, the physical properties of <i>O. aureus</i> muscle demonstrated a positive correlation with salinity levels. The content of amino acids and fatty acids in <i>O. aureus</i> muscles grown under salinity was higher than that in freshwater (<i>P</i> > 0.05). Venn analysis showed that 2343 common differentially expressed genes (DEGs) were identified in the four groups (0, 3, 7, and 11 ppt), of which 767 were up-regulated and 1576 were down-regulated. GO and KEGG analysis revealed 39 significant pathways, mainly including unsaturated fatty acid biosynthesis, fatty acid elongation, and <i>α</i>-linolenic acid metabolism. The heat map and trend analysis showed that the expression levels of key genes involved in the physiological processes of ELOVL, SPLA2, and FADS2 in the test group were significantly higher than those in the control group (<i>P</i> > 0.05). The above results suggested that <i>O. aureus</i> can not only adapt to the saline habitat but also improve muscle quality by regulating the body’s metabolic pathways.</p>","PeriodicalId":14894,"journal":{"name":"Journal of Applied Ichthyology","volume":"2024 1","pages":""},"PeriodicalIF":0.9,"publicationDate":"2024-01-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139445537","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
A 60-day feeding trial has been carried out to access the optimal dietary crude protein (DCP) requirement of juvenile Jerdon’s carp, Hypselobarbus jerdoni. Six isoenergetic (around 400 Kcal DE/100 g), isolipidic (60.80 g/kg), and heteronitrogenous diets were prepared with graded levels of protein, viz., 200, 250, 300, 350, 400, and 450 g/kg (TCP 20-TCP 45 with 50 g/kg incremental level). A completely randomised design (CRD) was used to distribute 270 Jerdon’s carp juveniles (6.12–6.18 g) in six experimental groups in triplicates (15 fish/tank, 200 l water capacity). After 60 days, the fishes of the TCP30 group showed significantly higher weight gain, final body weight, and percentage weight gain (WG%). The fish of the TCP30 group exhibited a significantly higher feed efficiency ratio and specific growth rate. On the other hand, a significantly lower feed conversion ratio is recorded in the TCP30 and TCP35 groups. The protein efficiency ratio of fish was reduced significantly with the elevated DCP level. Whole-body moisture, lipid, and total ash contents of H. jerdoni were remain unaffected by DCP levels. However, DCP levels significantly influenced the whole-body protein of H. jerdoni juveniles, with significantly higher values noticed in the TCP30 and TCP35 groups. The TCP35, TCP40, and TCP45 groups exhibited significantly higher (p < 0.05) protease activity, and the amylase activity showed a decreasing trend in response to dietary protein levels. A significantly (p < 0.05) higher SOD and CAT activity were observed in the TCP20 and TCP25 groups. However, lower hepatic glutamate pyruvate transaminase and glutamic-oxaloacetic transaminase activity were observed in the TCP30 and TCP35 groups, respectively. Furthermore, based on broken-line linear and second-order polynomial regression with respect to WG%, the optimal dietary crude protein requirement of H. jerdoni cultured for 60 days was found to be 309.72 and 316.40 g/kg.
{"title":"Effects of Varying Dietary Protein Levels on Growth Performance, Survival, Body Composition, Haemato-Biochemical Profile, and Metabolic Responses of Hypselobarbus jerdoni (Day, 1870) Juveniles","authors":"Subam Debroy, Paramita Banerjee Sawant, Parimal Sardar, Gouranga Biswas, Tincy Varghese, Mukunda Goswami, Manas Kumar Maiti, Ramjanul Haque, Udipta Roy, Debajit Sarma","doi":"10.1155/2024/8627712","DOIUrl":"10.1155/2024/8627712","url":null,"abstract":"<p>A 60-day feeding trial has been carried out to access the optimal dietary crude protein (DCP) requirement of juvenile Jerdon’s carp, <i>Hypselobarbus jerdoni</i>. Six isoenergetic (around 400 Kcal DE/100 g), isolipidic (60.80 g/kg), and heteronitrogenous diets were prepared with graded levels of protein, <i>viz</i>., 200, 250, 300, 350, 400, and 450 g/kg (TCP 20-TCP 45 with 50 g/kg incremental level). A completely randomised design (CRD) was used to distribute 270 Jerdon’s carp juveniles (6.12–6.18 g) in six experimental groups in triplicates (15 fish/tank, 200 l water capacity). After 60 days, the fishes of the TCP30 group showed significantly higher weight gain, final body weight, and percentage weight gain (WG%). The fish of the TCP30 group exhibited a significantly higher feed efficiency ratio and specific growth rate. On the other hand, a significantly lower feed conversion ratio is recorded in the TCP30 and TCP35 groups. The protein efficiency ratio of fish was reduced significantly with the elevated DCP level. Whole-body moisture, lipid, and total ash contents of <i>H. jerdoni</i> were remain unaffected by DCP levels. However, DCP levels significantly influenced the whole-body protein of <i>H. jerdoni</i> juveniles, with significantly higher values noticed in the TCP30 and TCP35 groups. The TCP35, TCP40, and TCP45 groups exhibited significantly higher (<i>p</i> < 0.05) protease activity, and the amylase activity showed a decreasing trend in response to dietary protein levels. A significantly (<i>p</i> < 0.05) higher SOD and CAT activity were observed in the TCP20 and TCP25 groups. However, lower hepatic glutamate pyruvate transaminase and glutamic-oxaloacetic transaminase activity were observed in the TCP30 and TCP35 groups, respectively. Furthermore, based on broken-line linear and second-order polynomial regression with respect to WG%, the optimal dietary crude protein requirement of <i>H. jerdoni</i> cultured for 60 days was found to be 309.72 and 316.40 g/kg.</p>","PeriodicalId":14894,"journal":{"name":"Journal of Applied Ichthyology","volume":"2024 1","pages":""},"PeriodicalIF":0.9,"publicationDate":"2024-01-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139385149","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Qing Ji, Honglu Guo, Anxin Shi, Xingqiang Wang, Jiachen Yu, Ziyi Zhang, Jiayang Chen, Xiaowei Shi
SOXE transcription factors, including SOX8, SOX9, and SOX10, regulate several developmental events, such as sex determination, chondrogenesis, and neurogenesis. This study systematically identified six SoxE subfamily genes from the turbot (Scophthalmus maximus) genome and transcriptome, including SmSox8a, SmSox8b, SmSox9a, SmSox9b, SmSox10a, and SmSox10b. The duplicates of three SOXE members revealed that SoxE subfamily genes in the turbot underwent significant expansion. Relatively conserved exon-intron structures and intron insertions were detected using genomic structural analysis. Besides, phylogenetic analysis supported the previous classification of the SoxE subfamily. Results of the expression profile revealed that turbot SoxE subfamily genes may be involved in different activities, such as neurogenesis and gonad development. These findings would assist in the understanding of fish SoxE gene subfamily activities and evolution.
{"title":"Molecular Characterization, Phylogeny, and Expression Profiles of SoxE Subfamily in Scophthalmus maximus","authors":"Qing Ji, Honglu Guo, Anxin Shi, Xingqiang Wang, Jiachen Yu, Ziyi Zhang, Jiayang Chen, Xiaowei Shi","doi":"10.1155/2024/7014567","DOIUrl":"10.1155/2024/7014567","url":null,"abstract":"<p>SOXE transcription factors, including SOX8, SOX9, and SOX10, regulate several developmental events, such as sex determination, chondrogenesis, and neurogenesis. This study systematically identified six <i>SoxE</i> subfamily genes from the turbot (<i>Scophthalmus maximus</i>) genome and transcriptome, including <i>SmSox8a</i>, <i>SmSox8b</i>, <i>SmSox9a</i>, <i>SmSox9b</i>, <i>SmSox10a</i>, and <i>SmSox10b</i>. The duplicates of three SOXE members revealed that <i>SoxE</i> subfamily genes in the turbot underwent significant expansion. Relatively conserved exon-intron structures and intron insertions were detected using genomic structural analysis. Besides, phylogenetic analysis supported the previous classification of the <i>SoxE</i> subfamily. Results of the expression profile revealed that turbot <i>SoxE</i> subfamily genes may be involved in different activities, such as neurogenesis and gonad development. These findings would assist in the understanding of fish <i>SoxE</i> gene subfamily activities and evolution.</p>","PeriodicalId":14894,"journal":{"name":"Journal of Applied Ichthyology","volume":"2024 1","pages":""},"PeriodicalIF":0.9,"publicationDate":"2024-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139391327","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Huiping Ding, Tian Zhong, Yang Yang, Dexiang Ge, Jingya Wen, Chengyuan Zhao, Jun Liu, Zhiming Zhang
The Lancang-Mekong River watershed has extremely high fish biodiversity. With the rapid population growth and economic development in the river basin, fish diversity and fishery resources of this river are experiencing serious threats. Basic biological information on most fish species in the Lancang River, required to improve conservation in this area, is limited. This study aimed to provide new estimates of length-weight relationships (LWRs) by using the linear regression of W = aLb for eight indigenous fish species from the Lancang River, Southwest China. From 2018 to 2021, 534 specimens belonging to 3 families and 8 genera were collected using various types of fishing techniques. Standard length (SL) and body weight (BW) of each specimen were measured to the nearest 0.1 cm and 0.1 g, respectively. This study presents the first public records of LWR parameters of Schizothorax lissolabiatus, Poropuntius huangchuchieni, Tor sinensis, Scaphiodonichthys acanthopterus, Mystacoleucus lepturus, Hemiculterella macrolepis, Glyptothorax lampris, and Schistura porthos. The range of b values for the LWRs was 2.5378–3.1732, and the r2 values for all LWRs estimates ranged from 0.9102 to 0.9952. Intraspecific difference of b values across population and/or season was observed in S. lissolabiatus, T. sinensis, P. huangchuchieni, S. acanthopterus, and M. lepturus. The range of mean condition factor (K) and mean relative weight (Wr) was 0.97–2.39 and 100.29–108.18, respectively. This study updated information for FishBase and provided new record of maximum standard length for five species, namely, S. lissolabiatus, P. huangchuchieni, T. sinensis, S. acanthopterus, and M. lepturus. The findings of this study are essential for the management and conservation of locally indigenous fish and fisheries.
{"title":"Length-Weight Relationships and Growth Patterns of Eight Indigenous Fish Species from Lancang River, Southwest China","authors":"Huiping Ding, Tian Zhong, Yang Yang, Dexiang Ge, Jingya Wen, Chengyuan Zhao, Jun Liu, Zhiming Zhang","doi":"10.1155/2023/1629923","DOIUrl":"10.1155/2023/1629923","url":null,"abstract":"<div>\u0000 <p>The Lancang-Mekong River watershed has extremely high fish biodiversity. With the rapid population growth and economic development in the river basin, fish diversity and fishery resources of this river are experiencing serious threats. Basic biological information on most fish species in the Lancang River, required to improve conservation in this area, is limited. This study aimed to provide new estimates of length-weight relationships (LWRs) by using the linear regression of <i>W</i> = <i>aL</i><sup><i>b</i></sup> for eight indigenous fish species from the Lancang River, Southwest China. From 2018 to 2021, 534 specimens belonging to 3 families and 8 genera were collected using various types of fishing techniques. Standard length (SL) and body weight (BW) of each specimen were measured to the nearest 0.1 cm and 0.1 g, respectively. This study presents the first public records of LWR parameters of <i>Schizothorax lissolabiatus</i>, <i>Poropuntius huangchuchieni</i>, <i>Tor sinensis</i>, <i>Scaphiodonichthys acanthopterus</i>, <i>Mystacoleucus lepturus</i>, <i>Hemiculterella macrolepis</i>, <i>Glyptothorax lampris</i>, and <i>Schistura porthos</i>. The range of <i>b</i> values for the LWRs was 2.5378–3.1732, and the <i>r</i><sup>2</sup> values for all LWRs estimates ranged from 0.9102 to 0.9952. Intraspecific difference of <i>b</i> values across population and/or season was observed in <i>S. lissolabiatus</i>, <i>T. sinensis</i>, <i>P. huangchuchieni</i>, <i>S. acanthopterus</i>, and <i>M</i>. <i>lepturus</i>. The range of mean condition factor (<i>K</i>) and mean relative weight (<i>W</i><sub><i>r</i></sub>) was 0.97–2.39 and 100.29–108.18, respectively. This study updated information for FishBase and provided new record of maximum standard length for five species, namely, <i>S</i>. <i>lissolabiatus</i>, <i>P. huangchuchieni</i>, <i>T. sinensis</i>, <i>S. acanthopterus</i>, and <i>M. lepturus</i>. The findings of this study are essential for the management and conservation of locally indigenous fish and fisheries.</p>\u0000 </div>","PeriodicalId":14894,"journal":{"name":"Journal of Applied Ichthyology","volume":"2023 1","pages":""},"PeriodicalIF":0.7,"publicationDate":"2023-12-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1155/2023/1629923","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139155551","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Erin R. Driehaus, Jarrett Landreth, Katherine Adase, Dustin Smith, David Wellman, Caroline C. Arantes, Brent A. Murry
Species-specific length-weight relationships can inform researchers and managers about the growth patterns and health of fish populations. Few length-weight relationships exist for Appalachian stream fish species despite the high amount of biodiversity within the region. The main purpose of our study was to determine the length-weight relationships for stream fish species found in Central Appalachia. We sampled 16 streams and captured over 14,000 individual fish among 44 species. We identified each fish to species and recorded total length (mm) and weight (g) for each individual. These data were log10 transformed and analyzed using linear regression to calculate the length-weight parameters for each species. Relationships were calculated for 44 different stream fish species. Searches in FishBase.org revealed that of the 44 species in our data, 9 species have no current data in FishBase.org (Froese and Pauly, 2016), while 20 others have no previous representation from Central Appalachia. The relationships obtained in this study are some of the first published for these species in this region. Availability of species- and region-specific data on length-weight relationships could help inform future research and management of these species.
{"title":"Length-Weight Relationships for 44 Central Appalachian Fish Species","authors":"Erin R. Driehaus, Jarrett Landreth, Katherine Adase, Dustin Smith, David Wellman, Caroline C. Arantes, Brent A. Murry","doi":"10.1155/2023/5573054","DOIUrl":"10.1155/2023/5573054","url":null,"abstract":"<div>\u0000 <p>Species-specific length-weight relationships can inform researchers and managers about the growth patterns and health of fish populations. Few length-weight relationships exist for Appalachian stream fish species despite the high amount of biodiversity within the region. The main purpose of our study was to determine the length-weight relationships for stream fish species found in Central Appalachia. We sampled 16 streams and captured over 14,000 individual fish among 44 species. We identified each fish to species and recorded total length (mm) and weight (g) for each individual. These data were log<sub>10</sub> transformed and analyzed using linear regression to calculate the length-weight parameters for each species. Relationships were calculated for 44 different stream fish species. Searches in FishBase.org revealed that of the 44 species in our data, 9 species have no current data in FishBase.org (Froese and Pauly, 2016), while 20 others have no previous representation from Central Appalachia. The relationships obtained in this study are some of the first published for these species in this region. Availability of species- and region-specific data on length-weight relationships could help inform future research and management of these species.</p>\u0000 </div>","PeriodicalId":14894,"journal":{"name":"Journal of Applied Ichthyology","volume":"2023 1","pages":""},"PeriodicalIF":0.7,"publicationDate":"2023-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1155/2023/5573054","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138981670","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Four loaches, namely, Lepidocephalichthys guntea (Hamilton, 1822), Lepidocephalichthys annandalei (Chaudhuri, 1912), Lepidocephalichthys thermalis (Valenciennes, 1846), and Lepidocephalichthys berdmorei (Blyth, 1860) from the Cobitidae family, were collected from the Surma River, Bangladesh. Of the total 376 speciminia, 193 males (51.32%) and 183 females (48.67%) in number; were collected with the support of local fishermen using a variety of nets at 15-day intervals from November 2022 to April 2023. The length-weight relationship (LWR) parameters were analyzed using the equation W = aLb. L. annandalei displayed a notable isometric growth pattern, with a condition factor (K) ranging from 0.725 to 0.734. In addition, L. thermalis exhibited isometric growth among males, while females showcased positive allometric growth with a condition factor (K) varying between 0.697 and 0.714. L. guntea exhibited a consistent positive allometric growth pattern across all aspects, with a condition factor (K) ranging from 0.729 to 0.738. In contrast, L. berdmorei demonstrated positive allometric growth, but males and females both exhibited a negative allometric growth pattern. The condition factor (K) for L. berdmorei ranged from 0.699 to 0.702. This suggests a complex growth pattern influenced by both length and weight in every experimental loach. The research underscores the importance of recognizing gender-specific variations in growth patterns within species.
{"title":"Length-Weight Relationships (LWRs) of Four Loach Species of the Cobitidae Family from the Surma River, Bangladesh","authors":"Shamima Nasren, MD Zobayer Rahman, MD Shahinul Islam, Rasel Mia, Sohel Mian, Md. Abdullah-Al Mamun","doi":"10.1155/2023/6654237","DOIUrl":"10.1155/2023/6654237","url":null,"abstract":"<div>\u0000 <p>Four loaches, namely, <i>Lepidocephalichthys guntea</i> (Hamilton, 1822), <i>Lepidocephalichthys annandalei</i> (Chaudhuri, 1912), <i>Lepidocephalichthys thermalis</i> (Valenciennes, 1846), and <i>Lepidocephalichthys berdmorei</i> (Blyth, 1860) from the Cobitidae family, were collected from the Surma River, Bangladesh. Of the total 376 speciminia, 193 males (51.32%) and 183 females (48.67%) in number; were collected with the support of local fishermen using a variety of nets at 15-day intervals from November 2022 to April 2023. The length-weight relationship (LWR) parameters were analyzed using the equation <i>W</i> = <i>a</i><i>L</i><sup><i>b</i></sup>. <i>L. annandalei</i> displayed a notable isometric growth pattern, with a condition factor (<i>K</i>) ranging from 0.725 to 0.734. In addition, <i>L. thermalis</i> exhibited isometric growth among males, while females showcased positive allometric growth with a condition factor (<i>K</i>) varying between 0.697 and 0.714. <i>L. guntea</i> exhibited a consistent positive allometric growth pattern across all aspects, with a condition factor (<i>K</i>) ranging from 0.729 to 0.738. In contrast, <i>L. berdmorei</i> demonstrated positive allometric growth, but males and females both exhibited a negative allometric growth pattern. The condition factor (<i>K</i>) for <i>L. berdmorei</i> ranged from 0.699 to 0.702. This suggests a complex growth pattern influenced by both length and weight in every experimental loach. The research underscores the importance of recognizing gender-specific variations in growth patterns within species.</p>\u0000 </div>","PeriodicalId":14894,"journal":{"name":"Journal of Applied Ichthyology","volume":"2023 1","pages":""},"PeriodicalIF":0.7,"publicationDate":"2023-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1155/2023/6654237","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138587322","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
In this study, a significant difference was demonstrated between the otolith increments of wild and reared Hedinichthys yarkandensis (day, 1877) (P < 0.05). By comparing the width of the first 40 daily increments of otoliths, it was found that the otolith width of the wild H. yarkandensis was significantly wider than that of the reared H. yarkandensis. The otolith daily increment width of wild H. yarkandensis tends to increase significantly with age and then decreases slowly, while the otolith daily increment width of reared H. yarkandensis grows more steadily. This may be related to the different growing conditions of the two groups. This study investigates the relationship between the early life history of H. yarkandensis and the daily otolith increment and provides a basis for identifying fish groups and fish life histories through differences in otolith microstructure.
{"title":"Differences in Otolith Microstructure between Reared and Wild Hedinichthys yarkandensis","authors":"Liwei Xia, Chengxin Wang, Xinyue Wang, Linghui Hu, Fangze Zi, Liting Yang, Gulden Serekbol, Yong Song, Shengao Chen","doi":"10.1155/2023/2560365","DOIUrl":"https://doi.org/10.1155/2023/2560365","url":null,"abstract":"<div>\u0000 <p>In this study, a significant difference was demonstrated between the otolith increments of wild and reared <i>Hedinichthys yarkandensis</i> (day, 1877) (<i>P</i> < 0.05). By comparing the width of the first 40 daily increments of otoliths, it was found that the otolith width of the wild <i>H. yarkandensis</i> was significantly wider than that of the reared <i>H. yarkandensis</i>. The otolith daily increment width of wild <i>H. yarkandensis</i> tends to increase significantly with age and then decreases slowly, while the otolith daily increment width of reared <i>H. yarkandensis</i> grows more steadily. This may be related to the different growing conditions of the two groups. This study investigates the relationship between the early life history of <i>H. yarkandensis</i> and the daily otolith increment and provides a basis for identifying fish groups and fish life histories through differences in otolith microstructure.</p>\u0000 </div>","PeriodicalId":14894,"journal":{"name":"Journal of Applied Ichthyology","volume":"2023 1","pages":""},"PeriodicalIF":0.7,"publicationDate":"2023-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1155/2023/2560365","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143249195","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Yunrong Shi, Jieqing Yang, Xinran Li, Haizhou Li, Jinchen Yu, Lang Chen, Jin Zhou
Length-weight relationships (LWRs) were reported for ten fish species (Abbottina rivularis, Hemibarbus labeo, Hemibarbus maculatus, Onychostoma macrolepis, Opsariichthys bidens, Rhynchocypris lagowskii, Schizothorax prenanti, Sinibrama macrops, Zacco platypus, and Siniperca scherzeri). Fishes were collected from 62 sampling stations covering an area of ∼7000 km2 in the Qinling Mountains, characterized by unique fauna and distribution pattern, using gillnets and ground cages during June to December 2022. The intercept a ranged from 0.013 for S. prenanti to 0.060 for H. labeo, and the slope b ranged from 2.537 for H. labeo to 3.079 for Z. platypus.
{"title":"Length-Weight Relationships for Ten Fish Species from Rivers in the Qinling Mountains, China","authors":"Yunrong Shi, Jieqing Yang, Xinran Li, Haizhou Li, Jinchen Yu, Lang Chen, Jin Zhou","doi":"10.1155/2023/8297444","DOIUrl":"10.1155/2023/8297444","url":null,"abstract":"<div>\u0000 <p>Length-weight relationships (LWRs) were reported for ten fish species (<i>Abbottina rivularis</i>, <i>Hemibarbus labeo</i>, <i>Hemibarbus maculatus</i>, <i>Onychostoma macrolepis</i>, <i>Opsariichthys bidens</i>, <i>Rhynchocypris lagowskii</i>, <i>Schizothorax prenanti</i>, <i>Sinibrama macrops</i>, <i>Zacco platypus</i>, and <i>Siniperca scherzeri</i>). Fishes were collected from 62 sampling stations covering an area of ∼7000 km<sup>2</sup> in the Qinling Mountains, characterized by unique fauna and distribution pattern, using gillnets and ground cages during June to December 2022. The intercept <i>a</i> ranged from 0.013 for <i>S</i>. <i>prenanti</i> to 0.060 for <i>H</i>. <i>labeo</i>, and the slope <i>b</i> ranged from 2.537 for <i>H. labeo</i> to 3.079 for <i>Z</i>. <i>platypus</i>.</p>\u0000 </div>","PeriodicalId":14894,"journal":{"name":"Journal of Applied Ichthyology","volume":"2023 1","pages":""},"PeriodicalIF":0.7,"publicationDate":"2023-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1155/2023/8297444","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139205886","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Aquaculture is one of the fastest growing sectors worldwide. Currently, 50% of global fish consumption is provided by aquaculture. In India, the major cultivated fishes are Labeo catla, Labeo rohita, Cirrhinus mrigala, Hypophthalmichthys molitrix, Ctenopharyngodon idella, and Cyprinus carpio. Among these, L. rohita is a widely consumed fish. We aimed to study the effect of one of the most widely used herbicides, glyphosate, on the embryonic development of L. rohita. The 96 h LC50 of glyphosate for L. rohita embryos was found to be 20.89 mgL−1. The embryos were exposed to 1/10th, 1/5th,, and 1/3rd concentrations of LC50 for 96 h. The observed deformities included abdominal curvature, kink formation in the tail, yolk sac edema, pericardial edema, and improperly flattened swim bladder. Besides, we could observe a reduction in pigmentation at 96 h and a decrease in heart rate at 24, 48, 72, and 96 h. All these deformities led to the mortality of embryos. This study indicated that the herbicide (glyphosate) can adversely affect the natural population of the Indian major carp, L. rohita.
水产养殖是世界上增长最快的部门之一。目前，全球鱼类消费的50%由水产养殖提供。在印度，主要的养殖鱼类是鲇鱼、罗希塔鱼、马尾鱼、毛利鱼、鱼咽鱼和鲤鱼。其中，罗氏乳杆菌是一种被广泛食用的鱼类。本研究旨在研究最广泛使用的除草剂之一草甘膦对L. rohita胚胎发育的影响。草甘膦对罗氏乳杆菌胚胎的96 h LC50为20.89 mgL−1。胚胎分别在1/10、1/5、1/3 LC50浓度下培养96 h。观察到的畸形包括腹部弯曲、尾部扭结形成、卵黄囊水肿、心包水肿和不适当扁平的鱼鳔。此外，我们可以观察到96 h时色素沉着减少，24、48、72和96 h时心率降低。所有这些畸形都会导致胚胎的死亡。本研究表明，草甘膦除草剂对印度主要鲤鱼L. rohita的自然种群有不利影响。
{"title":"Effects of Sublethal Concentrations of the Herbicide, Glyphosate, on Embryonic Development of the Indian Major Carp, Labeo rohita","authors":"Swati Sucharita Panda, Ipsita Iswari Das, Gouranga Biswas, Jitendra Kumar Sundaray, Rajesh Kumar, Lakshman Sahoo","doi":"10.1155/2023/5512805","DOIUrl":"10.1155/2023/5512805","url":null,"abstract":"<div>\u0000 <p>Aquaculture is one of the fastest growing sectors worldwide. Currently, 50% of global fish consumption is provided by aquaculture. In India, the major cultivated fishes are <i>Labeo catla, Labeo rohita, Cirrhinus mrigala, Hypophthalmichthys molitrix, Ctenopharyngodon idella</i>, and <i>Cyprinus carpio</i>. Among these, <i>L. rohita</i> is a widely consumed fish. We aimed to study the effect of one of the most widely used herbicides, glyphosate, on the embryonic development of <i>L. rohita.</i> The 96 h LC<sub>50</sub> of glyphosate for <i>L. rohita</i> embryos was found to be 20.89 mgL<sup>−1</sup>. The embryos were exposed to 1/10<sup>th</sup>, 1/5<sup>th</sup>,<sup>,</sup> and 1/3<sup>rd</sup> concentrations of LC<sub>50</sub> for 96 h. The observed deformities included abdominal curvature, kink formation in the tail, yolk sac edema, pericardial edema, and improperly flattened swim bladder. Besides, we could observe a reduction in pigmentation at 96 h and a decrease in heart rate at 24, 48, 72, and 96 h. All these deformities led to the mortality of embryos. This study indicated that the herbicide (glyphosate) can adversely affect the natural population of the Indian major carp, <i>L. rohita</i>.</p>\u0000 </div>","PeriodicalId":14894,"journal":{"name":"Journal of Applied Ichthyology","volume":"2023 1","pages":""},"PeriodicalIF":0.7,"publicationDate":"2023-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1155/2023/5512805","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134954048","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The river shad, hilsa (Tenualosa ilisha), is an anadromous fish that migrates from marine to freshwater for spawning. This transition/migration poses severe osmotic stress that hilsa needs to successfully minimize. The present study was conducted to evaluate the cellular (ultrastructure of gill and kidney), physiological (hemocyte counts, blood, and water osmolality), and biochemical (free amino acids, free fatty acids, blood glucose, and cortisol levels) parameters of hilsa collected from four different environmental salinity levels (0‰, 10‰, 20‰, and 30‰ salinity levels; using 10 fish samples from each salinity). Results indicate that increased amount of fatty/mucus cells in the gill and lower number of glomerular capsules in kidney were observed at low (0‰ and 10‰) salinities compared to high (20‰ and 30‰) salinities. Water and blood osmolality (total ionic content) showed declining trends with lowering salinities. Total number of blood cells was also found to vary significantly (P < 0.05) among salinities. Salinity-specific blood cortisol and glucose levels of hilsa were observed as 0‰ > 10‰ > 30‰ > 20‰. Total essential and free amino acids of hilsa blood showed significantly declining trends (P < 0.05) with salinity reductions. No significant differences were observed between 10‰, 20‰, and 30‰ salinities for different types of fatty acids, while hilsa collected from 0‰ showed significantly higher (P < 0.05) levels of fatty acids compared to the remaining three salinities. Findings indicate that hilsa rapidly alters cellular, physiological, and biochemical traits for successful transition between different salinity habitats.
{"title":"Cellular, Physiological, and Biochemical Basis of Adaptive Response to Variable Osmotic Environments by the River Shad, Tenualosa ilisha","authors":"Wasim Akram, Maliha Tabassum, Md. Lifat Rahi","doi":"10.1155/2023/4910938","DOIUrl":"10.1155/2023/4910938","url":null,"abstract":"<div>\u0000 <p>The river shad, hilsa (<i>Tenualosa ilisha</i>), is an anadromous fish that migrates from marine to freshwater for spawning. This transition/migration poses severe osmotic stress that hilsa needs to successfully minimize. The present study was conducted to evaluate the cellular (ultrastructure of gill and kidney), physiological (hemocyte counts, blood, and water osmolality), and biochemical (free amino acids, free fatty acids, blood glucose, and cortisol levels) parameters of hilsa collected from four different environmental salinity levels (0‰, 10‰, 20‰, and 30‰ salinity levels; using 10 fish samples from each salinity). Results indicate that increased amount of fatty/mucus cells in the gill and lower number of glomerular capsules in kidney were observed at low (0‰ and 10‰) salinities compared to high (20‰ and 30‰) salinities. Water and blood osmolality (total ionic content) showed declining trends with lowering salinities. Total number of blood cells was also found to vary significantly (<i>P</i> < 0.05) among salinities. Salinity-specific blood cortisol and glucose levels of hilsa were observed as 0‰ > 10‰ > 30‰ > 20‰. Total essential and free amino acids of hilsa blood showed significantly declining trends (<i>P</i> < 0.05) with salinity reductions. No significant differences were observed between 10‰, 20‰, and 30‰ salinities for different types of fatty acids, while hilsa collected from 0‰ showed significantly higher (<i>P</i> < 0.05) levels of fatty acids compared to the remaining three salinities. Findings indicate that hilsa rapidly alters cellular, physiological, and biochemical traits for successful transition between different salinity habitats.</p>\u0000 </div>","PeriodicalId":14894,"journal":{"name":"Journal of Applied Ichthyology","volume":"2023 1","pages":""},"PeriodicalIF":0.7,"publicationDate":"2023-11-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1155/2023/4910938","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135340494","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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