Journal of fish biology最新文献

{"title":"Assessing metabolic rate and post-tagging recovery in juvenile fish.","authors":"Oscar D P Notman-Grobler, Paris M B Mastrodimitropoulos, Alessandro Bevilacqua, Robert J Lennox, Hugo Flávio","doi":"10.1111/jfb.70208","DOIUrl":"10.1111/jfb.70208","url":null,"abstract":"<p><p>Juvenile fish play a crucial role in the health of aquatic ecosystems, serving both as the foundation for future adult populations and as a valuable food source. Studying the juvenile life stage of fish using acoustic telemetry is inherently challenging due to their small size and associated difficulties in tracking and data collection. Recent advances in telemetry, including the miniaturization of tags, have enabled researchers to investigate previously understudied size classes of fish. Tagging fish can introduce sublethal effects that alter their physiology and behaviour, ultimately biasing the collected data; this effect is exacerbated in smaller-bodied fish, which are generally more sensitive to tagging procedures. Our study tested whether tagging juvenile brook trout (Salvelinus fontinalis) of two size classes (10-12 and 13-16 cm fork length, n = 80) with a LOTEK JSATS PinTag (0.22 g, mean tag burden 1.11% of body mass, range 0.54-2.00%) impacted their oxygen consumption rates ( <math> <semantics> <mrow> <msub><mover><mi>M</mi> <mo>̇</mo></mover> <msub><mi>O</mi> <mn>2</mn></msub> </msub> </mrow> <annotation>$$ {dot{M}}_{{mathrm{O}}_2} $$</annotation></semantics> </math> ) over the 2 days following tagging. Handling and tagging caused no mortalities, although we observed a nearly significant effect (p = 0.06) of the experimental group (control, anaesthesia, surgery, tagged) on standard metabolic rate (SMR). This was driven by a 7% decrease in the SMR of the tagged animals, which were significantly different from the control group when compared directly (p = 0.02). This marginal effect in standard metabolic rate, combined with the absence of significant effects on maximum metabolic rate, aerobic scope and post-exercise recovery, suggests that the JSATS PinTag does not impair the aerobic metabolic capacity of fish of this size. Our findings indicate that neither the surgery procedure nor the presence of the tag limit the brook trout's capacity for burst movement, which is highly relevant for predator-evasion responses after release in the wild. In addition, we evaluated wound recovery and suture retention over a 3-week period using either braided or monofilament suture material. While braided sutures caused more immediate irritation and were more prone to fungal growth, their quicker expulsion may reduce long-term discomfort compared to monofilament sutures. Determining the optimal suture type may ultimately depend on study duration and objectives, and longer-term monitoring could clarify which material best supports overall healing.</p>","PeriodicalId":15794,"journal":{"name":"Journal of fish biology","volume":" ","pages":""},"PeriodicalIF":2.0,"publicationDate":"2025-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144956802","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Longest documented coastal migrations of shortnose sturgeon.","authors":"Joseph D Nolan, William C Post, Ellen Waldrop, Joseph J Facendola, Michael S Loeffler, William Collier, Evan C Ingram, Martin J Hamel, Adam G Fox","doi":"10.1111/jfb.70205","DOIUrl":"10.1111/jfb.70205","url":null,"abstract":"<p><p>The shortnose sturgeon (SNS; Acipenser brevirostrum) is a United States federally endangered diadromous species. Although SNS spend much of their time in riverine habitat, inter-river migrations have been documented in northern populations. However, the inter-river migratory behaviour and distance capabilities of southern SNS are poorly understood. In this communication, we describe two SNS that migrated approximately 425 km across the coast, far exceeding the previously reported maximum coastal migration distance for the species. These observations offer critical updates for species descriptions and management regarding the coastal migration ability of SNS.</p>","PeriodicalId":15794,"journal":{"name":"Journal of fish biology","volume":" ","pages":""},"PeriodicalIF":2.0,"publicationDate":"2025-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144956623","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Salinity-induced variations in growth performance, stress biomarkers and biochemical profiles of striped catfish (Pangasianodon hypophthalmus, Sauvage, 1878).","authors":"Muhammad Nouman Riaz, Muhammad Hafeez-Ur-Rehman, Hamda Azmat, Shahid Mehmood","doi":"10.1111/jfb.70211","DOIUrl":"https://doi.org/10.1111/jfb.70211","url":null,"abstract":"<p><p>Environmental salinity affects the growth, survival rate and physiological functions of fish. In this study, the effects of salinity stress on Pangasianodon hypophthalmus (Sauvage, 1878) fingerlings were examined over a 90-day period. After acclimatization, a total of 300 P. hypophthalmus fingerlings were randomly assigned into three replicates and divided into five treatment groups with salinity levels of 0‰, 6‰, 12‰, 18‰, and 24‰ and with a stocking density of 20 fish per aquarium. After 90 days, the final weight, weight gain, weight gain percentage and specific growth rate significantly (p < 0.0001) decreased with increasing salinity, while feed conversion ratio values increased. The viscerosomatic index and hepatosomatic index significantly (p < 0.0001) increased up to 12‰ salinity, then decreased. Survival rate differed significantly (p < 0.0001), with a maximum at 12‰ and a minimum at 24‰ salinity level. Moisture and ash content were significantly higher (p < 0.0001) at 18‰ and 24‰. Crude lipid and protein contents were significantly higher (p < 0.0001) at lower salinity levels. Haematological content was significantly higher (p < 0.0001) at 0‰, 6‰ and 12‰ salinity levels, then decreased. The values of globulin, albumin and total protein also declined significantly (p < 0.0001) with increasing salinity. Conversely, values of alanine aminotransferase and aspartate aminotransferase increased significantly (p < 0.0001) from 0‰ to 24‰. Total cholesterol, total glyceride and high-density lipoprotein cholesterol were significantly higher (p < 0.0001) at 12‰ and lower at 24‰. Stress parameters, such as glucose and cortisol, and lipid peroxidation parameters, such as catalase, glutathione peroxidase, superoxide dismutase and malondialdehyde, increased significantly (p < 0.0001) as the salinity level increased. This study demonstrates that the optimal salinity level for the cultivation of P. hypophthalmus in inland saline groundwater is 12‰, which ensures the maximum survival rate.</p>","PeriodicalId":15794,"journal":{"name":"Journal of fish biology","volume":" ","pages":""},"PeriodicalIF":2.0,"publicationDate":"2025-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144956669","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A wild-caught rosy barb Pethia conchonius in a British urban pond underscores the need to prevent aquarium releases.","authors":"Peter J Barry, Phil I Davison, Luke Pearson, Gordon H Copp","doi":"10.1111/jfb.70125","DOIUrl":"https://doi.org/10.1111/jfb.70125","url":null,"abstract":"<p><p>A specimen of rosy barb Pethia conchonius of 51 mm standard length, encountered in an urban pond in London, is reported. This small cyprinid is native to lakes and streams in subtropical regions of southern Asia and is commonly sold as an ornamental fish. An invasiveness risk screening indicated that it is currently unlikely to establish in the United Kingdom due to limiting temperatures but highlights the increased risk of subtropical fishes establishing under climate change. This occurrence once again demonstrates the potential impacts of aquarium releases into urban ponds.</p>","PeriodicalId":15794,"journal":{"name":"Journal of fish biology","volume":" ","pages":""},"PeriodicalIF":2.0,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144956753","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A single nucleotide polymorphism genotyping panel for efficient genetic stock identification of the Teno river Atlantic salmon (Salmo salar) population complex.","authors":"Helena Johansson, Jaakko Erkinaro, Morten Falkegård, Anders Foldvik, Panu Orell, Craig R Primmer, Victoria L Pritchard","doi":"10.1111/jfb.70179","DOIUrl":"https://doi.org/10.1111/jfb.70179","url":null,"abstract":"<p><p>A new single nucleotide polymorphism (SNP) panel for genetic stock identification in the Teno river Atlantic salmon, Salmo salar L., fishery was developed, with a view to improving on an existing microsatellite panel. Twenty-two genetically differentiated reporting units were proposed based on population genetic analyses of 1212 individuals collected at 37 locations in the river and genotyped for >33,000 genome-wide SNPs. A small subset of these SNPs was selected for genetic stock identification (GSI) using an iterative process that considered their diversity and differentiation across reporting units. A genotyping-by-sequencing assay was developed to simultaneously genotype 180 of these GSI SNPs plus a sexing marker. This new SNP panel showed comparative GSI power to the microsatellite panel, with anticipated improvements in terms of cost, speed and robustness, and transferability across laboratories and genotyping platforms. Mixed-stock analysis of the 2018 Teno river salmon catch using the new panel inferred that all 22 reporting units contributed to the fishery. Estimated catch proportions positively scaled with an independent estimate of reporting unit productivity: target spawning female biomass. This demonstrates the usefulness and efficiency of the 180 SNP panel for Atlantic salmon GSI in the Teno river system. If conducted on a regular basis, GSI can enable fine-tuning of management strategies to promote sustainable fishing.</p>","PeriodicalId":15794,"journal":{"name":"Journal of fish biology","volume":" ","pages":""},"PeriodicalIF":2.0,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144956717","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Influences of seawater adaptation on the endocrine, osmoregulatory and immune systems in gill, peripheral blood leucocyte, skin and intestine of steelhead trout Oncorhynchus mykiss.","authors":"T Yada, M Abe","doi":"10.1111/jfb.70055","DOIUrl":"https://doi.org/10.1111/jfb.70055","url":null,"abstract":"<p><p>Endocrine, osmoregulatory and immune responses have been examined in blood plasma, gill, peripheral blood leucocyte (PBL), skin and intestine of steelhead trout Oncorhynchus mykiss reared for 4 weeks in seawater. Plasma lysozyme activity and pituitary growth hormone messenger ribonuculeic acid (mRNA) levels were higher and prolactin levels were lower in seawater than in freshwater. mRNA levels of hormone receptor and immune-related genes in gills, PBL and skin were influenced by seawater. Especially in the intestine, mRNA levels of all examined hormone receptors were significantly higher in seawater, suggesting endocrine regulation of osmolality and immunity.</p>","PeriodicalId":15794,"journal":{"name":"Journal of fish biology","volume":" ","pages":""},"PeriodicalIF":2.0,"publicationDate":"2025-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144956633","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Combined transcriptome and metabolome analysis of tilapia response to hypoxia and Streptococcus agalactiae co-exposure.","authors":"Zaoya Zhao, Ling Wang, Yanjin Chen, Jinyu Liu, Qianxing Zou, Shuyu Han, Yi Yi, Jingu Shi","doi":"10.1111/jfb.70199","DOIUrl":"https://doi.org/10.1111/jfb.70199","url":null,"abstract":"<p><p>Deterioration of water quality, especially low dissolved oxygen, has contributed to outbreaks of streptococcal disease in tilapia. It has been reported that hypoxia increases the mortality of tilapia during Streptococcus agalactiae infection. However, the underlying mechanism of the increased susceptibility of tilapia to S. agalactiae caused by hypoxia remains unknown. In this study, the pathological effects of hypoxia and S. agalactiae co-exposure in the liver of tilapia were investigated using transcriptome and metabolome analyses. When subjected to individual hypoxia or S. agalactiae exposure, the liver of tilapia exhibited significant pathological effects, including vacuolation, severe necrosis, nuclear and cellular polymorphism, hemocyte infiltration/leakage and abundant granular deposits. Moreover, these pathological effects became more severe under hypoxia and S. agalactiae co-exposure. In addition, S. agalactiae exposure increased inflammation-related gene expression, including CC1, CC2, IL-1β, TNFα, but this effect was suppressed by hypoxia. Transcriptomic analysis revealed that carbohydrate, lipid and amino acid metabolic pathways were significantly altered in the hypoxia and S. agalactiae co-exposure group compared to those in the control group. Among these metabolic pathways, only lipid metabolism was obviously altered at the metabolite level, as revealed by metabolomics analysis. Further combined analysis of the transcriptome and metabolome suggested that, in lipid metabolic pathways, glycerophospholipid metabolism should be a key pathway in S. agalactiae-infected tilapia under hypoxic conditions. Taken together, the results of the combined analysis of the global changes in the transcriptome and metabolome of the tilapia liver under hypoxia and S. agalactiae co-exposure revealed important metabolic pathways involved in the pathological process by which hypoxia increases the susceptibility of tilapia to S. agalactiae.</p>","PeriodicalId":15794,"journal":{"name":"Journal of fish biology","volume":" ","pages":""},"PeriodicalIF":2.0,"publicationDate":"2025-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144956664","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Structural and developmental insights into the muscles involved in lionfish (Pterois spp.) vocalisations.","authors":"Roxanne B Holmes, Nadia M Hamilton, Katharine E Criswell, Keturah Z Smithson, James E Herbert-Read, Lucille Chapuis","doi":"10.1111/jfb.70183","DOIUrl":"https://doi.org/10.1111/jfb.70183","url":null,"abstract":"<p><p>Vocal signalling is an important mode of communication in fishes. The two species of lionfish in the Pterois complex, the Indo-Pacific lionfish (Pterois volitans) and the red lionfish (Pterois miles), are both known to produce different types of sounds with sonic muscles attached to the swimbladder. However, the specific mechanism and the functions of these vocalisations in these invasive species are still unknown. We used three-dimensional bioimaging to describe the anatomy of the sonic muscles of both species. We further quantified the muscles of P. volitans to specifically explore how muscles developed across ontogeny and to test the hypothesis that sonic muscles would show sexual dimorphism if they were a sexually selected trait. Both P. volitans and P. miles showed a physoclistous swimbladder with a bilaterally symmetric pair of extrinsic sonic swimbladder muscles (ESSMs), which have been suggested to control buoyancy and generate vocalisations. Both species also displayed an additional pair of anterior extrinsic muscles, which projected dorsoventrally from the spinal column and inserted onto the anterior wall of the swimbladder, potentially also having a role in sound production. Both types of sonic muscles were present across ontogeny. Quantification of the posterior belly of the ESSMs in P. volitans showed that both the length and mass of these muscles in both mature and immature individuals increased linearly with body size. There were no ontogenetic or sex differences in sonic muscle investment between individuals. Given the primary function of these muscles is to control the swimbladder for buoyancy, this may constrain the modification of these muscles relative to body size, or they may have no differences in their acoustic function between sexes or across ontogeny.</p>","PeriodicalId":15794,"journal":{"name":"Journal of fish biology","volume":" ","pages":""},"PeriodicalIF":2.0,"publicationDate":"2025-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144956610","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Revision of the Armoreye dory genus Zenion (Zeiformes: Zeniontidae) in the South China Sea, with a description of a new species.","authors":"Yen-Ting Lin, Chia-Hao Chang, Yu-San Han, Chien-Hsiang Lin","doi":"10.1111/jfb.70202","DOIUrl":"https://doi.org/10.1111/jfb.70202","url":null,"abstract":"<p><p>This study describes a new species of armoreye dory, Zenion boops sp. nov., from Dongsha Island, Taiwan, as part of a comprehensive revision of the genus Zenion in the South China Sea. The new species is clearly distinguishable from its tropical congeners, Z. hololepis and Z. japonicum, based on a combination of distinct morphological features, meristic counts, otolith morphology and c oxidase subunit I (COI) gene sequences. Z. boops is characterized by a smooth second dorsal spine, a long first dorsal spine, 30-35% of second (longest) dorsal spine, a small and narrow notch at the symphysis of the maxilla, and a relatively large eye diameter, 55-61% of head length. Furthermore, otolith morphology and phylogenetic analyses based on partial sequences of the cytochrome COI gene reveal significant genetic divergence between this new species and its congeners. With the addition of Z. boops, the genus Zenion now includes four valid species. We also present an identification key for all Zenion species and provide detailed descriptions of their otoliths. Also, we provide data that show that Z. hololepis is restricted to the Atlantic Ocean.</p>","PeriodicalId":15794,"journal":{"name":"Journal of fish biology","volume":" ","pages":""},"PeriodicalIF":2.0,"publicationDate":"2025-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144956592","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Identification of MMP gene family and their expression profiles during scale development in Gymnocypris przewalskii.","authors":"Yanrong Cui, Shujin Wei, Zihan Gao, Tonggang Wang, Luodan Zhang, Jin Li, Fulei Wei, Yi Yan, Jian Liang","doi":"10.1111/jfb.70182","DOIUrl":"https://doi.org/10.1111/jfb.70182","url":null,"abstract":"<p><p>Biomineralization is a biological process whereby organisms synthesize mineralized tissues, such as bones and fish scales. The scales of Gymnocypris przewalskii are highly specialized, present only in specific body regions, making this species an excellent model for studying scale development and biomineralization. Our previous work identified elevated expression levels of several matrix metalloproteinase (MMP) family members at scale-embedded sites. In this study, we systematically analysed the genetic characteristics and expression patterns of the MMP family in G. przewalskii. A total of 20 MMP genes were identified across the entire genome and designated as GpMMPs. Transcriptional analysis demonstrated that GpMMPs, particularly GpMMP2, GpMMP9 and GpMMP13, exhibited high expression levels in the skin around the anal fin-a key site for scale development. Notably, GpMMP13 expression increased consistently throughout the scale development process, whereas GpMMP2 and GpMMP9 exhibited a transient expression pattern characterized by an initial rise followed by a decline. Furthermore, cellular experiments conducted with G. przewalskii myofibroblasts indicated that the expression of these GpMMPs was positively regulated by the TGF-β, Wnt and PI3K-Akt signalling pathways. Collectively, our findings provide novel insights into the role of MMPs in scale development and introduce new perspectives on biomineralization mechanisms.</p>","PeriodicalId":15794,"journal":{"name":"Journal of fish biology","volume":" ","pages":""},"PeriodicalIF":2.0,"publicationDate":"2025-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144956625","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}