Journal of Applied Ichthyology最新文献

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Habitat Preferences and Spatiotemporal Distribution of Chinese Sturgeon (Acipenser sinensis) Revealed by Environmental DNA 环境DNA揭示的中华鲟生境偏好及时空分布
IF 0.7 4区 农林科学
Journal of Applied Ichthyology Pub Date : 2025-12-07 DOI: 10.1155/jai/8125748
Xuzhe Gu, Bo Feng, Guangpeng Feng, Tao Zhang, Gang Yang, Ju Yang, Qingbo Zhang
{"title":"Habitat Preferences and Spatiotemporal Distribution of Chinese Sturgeon (Acipenser sinensis) Revealed by Environmental DNA","authors":"Xuzhe Gu,&nbsp;Bo Feng,&nbsp;Guangpeng Feng,&nbsp;Tao Zhang,&nbsp;Gang Yang,&nbsp;Ju Yang,&nbsp;Qingbo Zhang","doi":"10.1155/jai/8125748","DOIUrl":"https://doi.org/10.1155/jai/8125748","url":null,"abstract":"<p>The Chinese sturgeon (<i>Acipenser sinensis</i>), a critically endangered anadromous species endemic to the Yangtze River, has undergone severe population decline due to habitat degradation and anthropogenic disturbances. To improve monitoring under low-abundance conditions, this study applied environmental DNA (eDNA) analysis using species-specific primers and SYBR Green quantitative PCR to investigate the spatiotemporal distribution of <i>A. sinensis</i> in the Yangtze River Estuary and adjacent coastal waters in May and August 2024. eDNA was detected at all sampling sites, with higher copy numbers generally observed in May, particularly in nearshore waters between Chongming and Changxing Islands. Generalized linear modeling indicated that eDNA concentrations were most closely associated with moderate temperatures, high dissolved oxygen, and slightly alkaline pH, while signal intensity declined under warmer and oxygen-poor conditions. Elevated eDNA values in May coincided with the timing of upstream release events, although the absence of prerelease baseline data prevents direct attribution to stocked individuals. Overall, the findings provide preliminary insights into seasonal habitat associations of <i>A. sinensis</i> in estuarine ecosystems and demonstrate the potential of eDNA as a sensitive and noninvasive tool for long-term monitoring and conservation assessment of endangered aquatic species.</p>","PeriodicalId":14894,"journal":{"name":"Journal of Applied Ichthyology","volume":"2025 1","pages":""},"PeriodicalIF":0.7,"publicationDate":"2025-12-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1155/jai/8125748","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145739426","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}
引用次数: 0
On the Occurrence of the Epinephelus coioides (Hamilton, 1822) in Western Mediterranean Waters 论地中海西部水域中Epinephelus coioides (Hamilton, 1822)的出现
IF 0.7 4区 农林科学
Journal of Applied Ichthyology Pub Date : 2025-12-04 DOI: 10.1155/jai/4603648
Antoni Lombarte, Alba Rojas, Laura Recasens, Ernesto Azzurro
{"title":"On the Occurrence of the Epinephelus coioides (Hamilton, 1822) in Western Mediterranean Waters","authors":"Antoni Lombarte,&nbsp;Alba Rojas,&nbsp;Laura Recasens,&nbsp;Ernesto Azzurro","doi":"10.1155/jai/4603648","DOIUrl":"https://doi.org/10.1155/jai/4603648","url":null,"abstract":"<p>On May 8, 2024, a single specimen of <i>Epinephelus coioides</i> was captured alive by a commercial fisher in the waters off Mataró, along the Catalan Coast in the northwestern Mediterranean (LAT 41.534N; LONG 2.457E). In this report, we document this capture and explore potential introduction vectors, presenting evidence that suggests a possible new and independent introduction of this species.</p>","PeriodicalId":14894,"journal":{"name":"Journal of Applied Ichthyology","volume":"2025 1","pages":""},"PeriodicalIF":0.7,"publicationDate":"2025-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1155/jai/4603648","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145695013","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}
引用次数: 0
Amygdalin Mitigates Benzo[a]pyrene-Induced Stress and Hepatic Dysfunction in Stellate Sturgeon Fry (Acipenser stellatus): Insights Into Immune and Metabolic Modulation 苦杏仁苷减轻苯并[a]芘诱导的应激和星形鲟鱼苗的肝功能障碍:免疫和代谢调节的见解
IF 0.7 4区 农林科学
Journal of Applied Ichthyology Pub Date : 2025-11-30 DOI: 10.1155/jai/6625570
Hannane Kouchaki, Behrooz Heidari, Yasaman Sayyadoghli, AbdolMajid Valipour
{"title":"Amygdalin Mitigates Benzo[a]pyrene-Induced Stress and Hepatic Dysfunction in Stellate Sturgeon Fry (Acipenser stellatus): Insights Into Immune and Metabolic Modulation","authors":"Hannane Kouchaki,&nbsp;Behrooz Heidari,&nbsp;Yasaman Sayyadoghli,&nbsp;AbdolMajid Valipour","doi":"10.1155/jai/6625570","DOIUrl":"https://doi.org/10.1155/jai/6625570","url":null,"abstract":"<p>This study evaluated the protective role of amygdalin against benzo[a]pyrene (BaP) toxicity in stellate sturgeon fry (<i>Acipenser stellatus</i>). Fish were pre-exposed to amygdalin (5 g/kg) and subsequently challenged with sublethal BaP concentrations (50% and 75% LC50). Exposure to BaP elevated cortisol and liver enzymes (ALT, AST, ALP; <i>p</i> &lt; 0.05), indicating hepatotoxic stress, whereas pretreatment with amygdalin significantly reduced ALT and AST activities (<i>p</i> &lt; 0.05). Immune parameters (C3, IgM, and lysozyme) improved with amygdalin supplementation (<i>p</i> &lt; 0.05) but showed only partial recovery under BaP exposure alone. Total antioxidative capacity (TAC) increased with amygdalin yet declined when combined with BaP, reflecting oxidative overload. In conclusion, the findings suggest that amygdalin may provide protective effects against BaP-induced stress and liver damage in sturgeon fry.</p>","PeriodicalId":14894,"journal":{"name":"Journal of Applied Ichthyology","volume":"2025 1","pages":""},"PeriodicalIF":0.7,"publicationDate":"2025-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1155/jai/6625570","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145686498","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}
引用次数: 0
Role of Trophic Niche Plasticity in Shaping Individual Performance: Insights From Juvenile Mugil cephalus in Mangrove Habitats 营养生态位可塑性在塑造个体性能中的作用:来自红树林栖息地中头头Mugil幼鱼的见解
IF 0.7 4区 农林科学
Journal of Applied Ichthyology Pub Date : 2025-11-21 DOI: 10.1155/jai/5977614
Fengming Liu, Jiao Qin, Xiaodong Yang, Zhuoxin Sun, Lingwei Kong, Junhao Li, Yanping Zheng, Yunrong Yan
{"title":"Role of Trophic Niche Plasticity in Shaping Individual Performance: Insights From Juvenile Mugil cephalus in Mangrove Habitats","authors":"Fengming Liu,&nbsp;Jiao Qin,&nbsp;Xiaodong Yang,&nbsp;Zhuoxin Sun,&nbsp;Lingwei Kong,&nbsp;Junhao Li,&nbsp;Yanping Zheng,&nbsp;Yunrong Yan","doi":"10.1155/jai/5977614","DOIUrl":"https://doi.org/10.1155/jai/5977614","url":null,"abstract":"<p>Trophic niche plasticity is a critical mechanism that enables fish species to adapt to diverse food resources in heterogeneous habitats; however, its specific implications for the performance of migratory juveniles through mangroves remain unclear. Thus, we comprehensively analyzed the population density, trophic niche characteristics, and body condition assessments of two juvenile populations of <i>Mugil cephalus</i> (Flathead grey mullet) inhabiting mangroves on the east and west coasts of Leizhou Peninsula, China. Our findings demonstrate a notable difference in niche metrics between populations with different population densities: the population with high population density had a narrower trophic niche space, higher niche redundancy, and higher trophic plasticity than the population with low density. Juveniles with high population density exhibited low Fulton condition index, indicating poorer body conditions. These empirical results support observations commonly documented in unstable environments with limited food resources, where intraspecific competition for resources tends to be prevalent. Our work contributes to the understanding of trophic niche variations among juvenile fish populations, provides valuable insights for conservation initiatives, and highlights the importance of considering the interplay among population size, trophic niche characteristics, and individual performance when designing protected areas with the aim of maximizing the nursing value for targeted species.</p>","PeriodicalId":14894,"journal":{"name":"Journal of Applied Ichthyology","volume":"2025 1","pages":""},"PeriodicalIF":0.7,"publicationDate":"2025-11-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1155/jai/5977614","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145581156","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}
引用次数: 0
Migration of Mongolian Grayling (Thymallus brevirostris) in the Khovd River, Mongolia: Implications for Ongoing Hydropower Development 蒙古灰鲑(Thymallus brevirostris)在蒙古Khovd河的迁移:对正在进行的水电开发的影响
IF 0.7 4区 农林科学
Journal of Applied Ichthyology Pub Date : 2025-11-20 DOI: 10.1155/jai/8725773
Bud Mendsaikhan, Nyambayar Batbayar, Burmaa Zambuu, Daniel Palm, James Losee, Tomas Brodin, Gustav Hellström
{"title":"Migration of Mongolian Grayling (Thymallus brevirostris) in the Khovd River, Mongolia: Implications for Ongoing Hydropower Development","authors":"Bud Mendsaikhan,&nbsp;Nyambayar Batbayar,&nbsp;Burmaa Zambuu,&nbsp;Daniel Palm,&nbsp;James Losee,&nbsp;Tomas Brodin,&nbsp;Gustav Hellström","doi":"10.1155/jai/8725773","DOIUrl":"https://doi.org/10.1155/jai/8725773","url":null,"abstract":"<p>Mongolian grayling is a large piscivorous grayling endemic to the endorheic basin of the Khovd and Zavkhan River systems in western Mongolia. Ongoing large-scale hydropower development in the Khovd River has raised concerns about potential impacts on the Mongolian grayling populations in the area. Very little is known about the behavior and biology of Mongolian grayling, which makes it difficult to predict the impacts of damming and to plan for conservation and management mitigation actions. In this study, we used acoustic telemetry to track migration and survival of Mongolian grayling in the Khovd River system before the onset of hydropower construction. We found that the Mongolian grayling in the Khovd River conduct extensive seasonal migrations (&gt; 170 km) to reach overwintering and spawning habitat and that migration routes pass through the Shijigtiin Canyon which is currently being developed for hydropower. We also found that Mongolian grayling in the downstream Khar Lake predominantly reside in the lake and only use lotic habitat during the spawning season, including the dammed Chono-Kharaikh River. Based on our results, we argue that the ongoing hydropower development of the Khovd River will have severe impacts on the grayling population by disrupting the annual migration cycle, prohibiting access to spawning and overwintering habitat, and altering flow regimes on downstream spawning grounds.</p>","PeriodicalId":14894,"journal":{"name":"Journal of Applied Ichthyology","volume":"2025 1","pages":""},"PeriodicalIF":0.7,"publicationDate":"2025-11-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1155/jai/8725773","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145572279","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}
引用次数: 0
Length–Weight Relationships of 68 Mesopelagic Fish Species From a Subtropical Ocean Basin 亚热带洋盆68种中上层鱼类的长度-重量关系
IF 0.7 4区 农林科学
Journal of Applied Ichthyology Pub Date : 2025-11-17 DOI: 10.1155/jai/4473256
Ian M. Areford, Sidney R. Trimble, April B. Cook, Tracey T. Sutton, Rosanna J. Milligan
{"title":"Length–Weight Relationships of 68 Mesopelagic Fish Species From a Subtropical Ocean Basin","authors":"Ian M. Areford,&nbsp;Sidney R. Trimble,&nbsp;April B. Cook,&nbsp;Tracey T. Sutton,&nbsp;Rosanna J. Milligan","doi":"10.1155/jai/4473256","DOIUrl":"https://doi.org/10.1155/jai/4473256","url":null,"abstract":"<p>Wet-weight- and dry-weight-derived length–weight relationships were estimated for 68 species of mesopelagic fishes found throughout the Gulf of Mexico, 59 of which are new for the region and 28 are new globally. The length–weight relationships obtained were of good fit, with 92% of models having <i>R</i><sup>2</sup> values above 0.90. Isometric and positive allometric growth were the most common growth models observed, which agrees with similar studies on mesopelagic fishes across various other regions. Allometric growth parameters (<i>b</i>) were largely within the expected range for fishes, with 76% of estimated growth parameters falling within the range 2.5–3.5. Estimates of growth form were variable across weight types and taxa, with 28 species displaying a different growth form depending on the weight type used. The shifts in growth form observed in this study were likely related to water content as the examination of the relationship between length and water content found that this relationship was significant in 22 of 28 species that exhibited a shift in growth form. Variations in relative water content in relation to length were hypothesized to reflect ontogenetic changes in body composition, driven by shifts in vertical distribution and diel vertical migration behavior. Overall, the present study represents one of the largest assemblies of length–weight relationships of mesopelagic fishes to date and will aid in regional biomass estimations of mesopelagic fishes in the Gulf of Mexico.</p>","PeriodicalId":14894,"journal":{"name":"Journal of Applied Ichthyology","volume":"2025 1","pages":""},"PeriodicalIF":0.7,"publicationDate":"2025-11-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1155/jai/4473256","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145580793","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}
引用次数: 0
Length–Weight and Length–Length Relationships of 12 Fish Species Caught as Bycatch in the Artisanal Whiteleg Shrimp (Litopenaeus vannamei) Fishery in the Biosphere Reserve Marismas Nacionales, Nayarit, Mexico 墨西哥纳亚里特Marismas Nacionales生物圈保护区手工白对虾(Litopenaeus vannamei)渔业中捕获的12种鱼类的长-重和长-长关系
IF 0.7 4区 农林科学
Journal of Applied Ichthyology Pub Date : 2025-10-30 DOI: 10.1155/jai/8823109
Ulianov Jakes-Cota, Luis Cesar Almendarez-Hernández, Yuliesky Garcés-Rodríguez
{"title":"Length–Weight and Length–Length Relationships of 12 Fish Species Caught as Bycatch in the Artisanal Whiteleg Shrimp (Litopenaeus vannamei) Fishery in the Biosphere Reserve Marismas Nacionales, Nayarit, Mexico","authors":"Ulianov Jakes-Cota,&nbsp;Luis Cesar Almendarez-Hernández,&nbsp;Yuliesky Garcés-Rodríguez","doi":"10.1155/jai/8823109","DOIUrl":"https://doi.org/10.1155/jai/8823109","url":null,"abstract":"<p>Length–weight relationship (LWR) and its parameters can be used for the development of models for the rational exploitation of fishery resources. In this study, we estimated the parameters of the LWRs and length–length relationships (LLRs) of 12 fish species caught incidentally by the artisanal whiteleg shrimp fishery in the Biosphere Reserve Marismas Nacionales (BRMN), Nayarit, Mexico. Fishes were sampled during the 2022–2024 fishing seasons (September–March) using cast nets of different mesh sizes recording total length (TL), standard length (SL), and total weight (W) for each. All LWRs and LLRs were significant (<i>p</i> &lt; 0.05) with high coefficient of determination (<i>R</i><sup>2</sup> &gt; 0.89) and <i>b</i>-values of LWRs ranging from 2.59 (<i>Diapterus brevirostris</i>) to 3.14 (<i>Elops affinis</i>). These findings will serve as a basis for understanding the status of fish species in BRMN, an area impacted by human activity (e.g., artisanal fishing and aquaculture).</p>","PeriodicalId":14894,"journal":{"name":"Journal of Applied Ichthyology","volume":"2025 1","pages":""},"PeriodicalIF":0.7,"publicationDate":"2025-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1155/jai/8823109","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145407435","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}
引用次数: 0
Residents and Transients—Fish Community Dynamics in a Highly Anthropised Tidal North Sea Estuary Across the Annual Cycle 在一个高度人类活动的北海潮汐河口,居民和瞬态鱼类群落的年周期动态
IF 0.7 4区 农林科学
Journal of Applied Ichthyology Pub Date : 2025-10-30 DOI: 10.1155/jai/3330930
Silvia Rosa Blum, Lasse Marohn, Marko Freese, Jan-Dag Pohlmann, Leander Höhne, Benedikt Merk, Wilhelm Hagen, Reinhold Hanel
{"title":"Residents and Transients—Fish Community Dynamics in a Highly Anthropised Tidal North Sea Estuary Across the Annual Cycle","authors":"Silvia Rosa Blum,&nbsp;Lasse Marohn,&nbsp;Marko Freese,&nbsp;Jan-Dag Pohlmann,&nbsp;Leander Höhne,&nbsp;Benedikt Merk,&nbsp;Wilhelm Hagen,&nbsp;Reinhold Hanel","doi":"10.1155/jai/3330930","DOIUrl":"https://doi.org/10.1155/jai/3330930","url":null,"abstract":"<p>Tidal estuaries provide important spawning, nursery and feeding habitats for a wide diversity of species and serve as transit areas for diadromous fishes. However, they are globally among the most impacted aquatic ecosystems, pressured by anthropogenic alterations and global change. Assessing local fish communities and their temporal dynamics is crucial to determine the ecological baseline of these ecosystems and to serve as an indicator of their ecological status. Here, we studied the fish community in a typical estuary of the Wadden Sea in central Europe, the strongly tidal and highly anthropised River Ems. Weekly bycatch samples from a commercial stow net fishery were analysed regarding fish community composition, individual length and biomass covering fourteen consecutive months. Thirty-nine diadromous, estuarine, marine and freshwater species were recorded, amending previously reported numbers upward. Total fish abundance peaked in November 2020 and was lowest in the first half of the year 2021, corroborating previous observations of a cyclical intra-annual community pattern in estuaries. The community structure changed significantly throughout the year, coinciding with variation in water temperature, dissolved oxygen concentrations, salinity and atmospheric pressure. During most months, European smelt (<i>Osmerus eperlanus</i>) and flounder (<i>Platichthys flesus</i>) dominated in abundance, and sand gobies (<i>Pomatoschistus</i> spp.), European eel (<i>Anguilla anguilla</i>), river lamprey (<i>Lampetra fluviatilis</i>), three-spined stickleback (<i>Gasterosteus aculeatus</i>) and European perch (<i>Perca fluviatilis</i>) occurred in substantial shares during single months. Some historically common species such as twaite shad (<i>Alosa fallax</i>), houting (<i>Coregonus</i> cf. <i>oxyrinchus</i>) and Atlantic salmon (<i>Salmo salar</i>) showed very low abundances. The non-native Western tubenose goby (<i>Proterorhinus semilunaris</i>) was first recorded in this area. Intra-annual changes in abundance and length composition of species of commercial or conservational interest, e.g., smelt and river lamprey, are discussed in detail. We show that high sampling resolution and complete annual coverage are crucial for a full picture of the fish community and conclude that the ecological status of the River Ems remains poor.</p>","PeriodicalId":14894,"journal":{"name":"Journal of Applied Ichthyology","volume":"2025 1","pages":""},"PeriodicalIF":0.7,"publicationDate":"2025-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1155/jai/3330930","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145407114","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}
引用次数: 0
MicroRNA Dynamics in Gonadal Development and Reproductive Regulation of Striped Murrel, Channa striata (Bloch, 1793) MicroRNA在条纹Murrel, Channa striata性腺发育和生殖调控中的动态(Bloch, 1793)
IF 0.7 4区 农林科学
Journal of Applied Ichthyology Pub Date : 2025-10-29 DOI: 10.1155/jai/5573815
Gitanjali Behera, Gowrimanohari Rakkannan, Kiran D. Rasal, Paramita Banerjee Sawant, Rajesh Kumar, Lakshman Sahoo, Narinder K. Chadha, Jitendra Kumar Sundaray
{"title":"MicroRNA Dynamics in Gonadal Development and Reproductive Regulation of Striped Murrel, Channa striata (Bloch, 1793)","authors":"Gitanjali Behera,&nbsp;Gowrimanohari Rakkannan,&nbsp;Kiran D. Rasal,&nbsp;Paramita Banerjee Sawant,&nbsp;Rajesh Kumar,&nbsp;Lakshman Sahoo,&nbsp;Narinder K. Chadha,&nbsp;Jitendra Kumar Sundaray","doi":"10.1155/jai/5573815","DOIUrl":"https://doi.org/10.1155/jai/5573815","url":null,"abstract":"<p>MicroRNAs (miRNAs) are essential regulators of gene expression, influencing a wide range of biological processes, including reproduction and gonadal development. This study investigated the expression patterns of various miRNAs in the gonads of <i>Channa striata</i> across different reproductive stages: prespawning, spawning, and postspawning. The Gonadosomatic Index (GSI) and Hepatosomatic Index (HSI) showed significant seasonal variations, with GSI peaking during the spawning season and HSI reaching its highest value in the prespawning period, reflecting reproductive preparation. Our findings highlight the distinct roles of several miRNAs in regulating reproductive processes. The miR-21 was upregulated during spawning in both sexes, indicating its key role in gametogenesis, with persistent expression in males through postspawning, suggesting a role in sperm quality maintenance. MiR-22 also showed upregulation during spawning, supporting its involvement in gamete maturation and steroidogenesis, with reduced expression postspawning. MiR-34a was notably upregulated in male gonads postspawning, highlighting its role in spermatogenic recovery and sperm motility regulation. The miR-133 displayed complex patterns: In females, it was downregulated during spawning and upregulated postspawning, while in males, it was upregulated during spawning but downregulated afterward, highlighting its role in reproductive and metabolic processes. In addition, miR-200 was upregulated during spawning and postspawning in both sexes, underscoring its role in gamete maturation. Lastly, the miR-202-5p was consistent during prespawning and spawning in females but downregulated postspawning, with increased expression during spawning and postspawning in males, indicating its role in sperm maturation. These findings underscore a complex network of miRNAs that regulate gonadal development and reproductive success in <i>C. striata</i>.</p>","PeriodicalId":14894,"journal":{"name":"Journal of Applied Ichthyology","volume":"2025 1","pages":""},"PeriodicalIF":0.7,"publicationDate":"2025-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1155/jai/5573815","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145406920","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}
引用次数: 0
Implications for Habitat Suitability Using Length–Weight Relationships and Condition Factors in the Chirchik River, Syr Darya Basin 锡尔河流域Chirchik河生境适宜性的长权关系及其影响因素
IF 0.7 4区 农林科学
Journal of Applied Ichthyology Pub Date : 2025-10-29 DOI: 10.1155/jai/6648940
Akbarjon Rozimov, Laziz Turaev, Sirojiddin Namozov, Fazlullo Agzamov, Jobir Sobirov, Chongnv Wang, Bakhtiyor Kholmatov, Xinxin Li, Baocheng Guo
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