Journal of fish biology最新文献

{"title":"Drivers of the range expansion of the European catfish (Silurus glanis) within its native distribution.","authors":"Jan Baer, Stephan Hüsgen, Matthias Fromherz, Juergen Geist, Alexander Brinker","doi":"10.1111/jfb.70099","DOIUrl":"https://doi.org/10.1111/jfb.70099","url":null,"abstract":"<p><p>The European catfish Silurus glanis L. continues to spread as an invasive species in Europe. Meanwhile, increasing abundance and range expansions are also suspected within its native distribution. The objective of this study was to characterize the feeding, growth and abundance of S. glanis in 12 lakes and 12 rivers within its European native range in relation to environmental changes that may explain population trends over time. The results suggest a shift in factors limiting the carrying capacity of catfish habitats within this range, leading to increases in growth and abundance. Statistical modelling identified warming and increasing population density of invasive gobies as likely contributors to this shift. Given that catfish predation on native species can be expected to increase dramatically, there is an urgent need for new management strategies. It is recommended that catfish removal rates should be increased, especially in areas of high importance for native fish and crayfish species, such as spawning grounds and at bottlenecks for migration.</p>","PeriodicalId":15794,"journal":{"name":"Journal of fish biology","volume":" ","pages":""},"PeriodicalIF":1.7,"publicationDate":"2025-06-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144275055","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":"Age determination, growth and otolith shape analysis of Lepidotrigla cavillone from Sardinian and Sicilian waters (Mediterranean Sea).","authors":"A Bellodi, E Asciutto, D Malara, F Longo, B Agus, C Bacchiani, M C Follesa, C Porcu, M C Mangano, P Battaglia","doi":"10.1111/jfb.70098","DOIUrl":"https://doi.org/10.1111/jfb.70098","url":null,"abstract":"<p><p>The large-scaled gurnard Lepidotrigla cavillone (Lacepède, 1801) is heavily affected by trawl fisheries targeting more economically valuable species. This species plays a key role in the food web and its potential collapse could negatively affect commercially exploited species. To date, few studies have attempted to provide needed life-history information for this species' stock status evaluation. With this in mind, we collected the otoliths of 470 specimens caught along the coasts of the two larger Mediterranean islands (271 specimens in Sardinia and 199 in Sicily). Age readings showed good reproducibility (index of average percent error = 11.4%, reading agreement 86.7%). For the first time, age-at-length data from this species were employed in a multi-model inference analysis. Von Bertalanffy's function outperformed the other examined models in terms of fitting the observed data. In both regions, there were no major differences in growth between sexes. The species exhibited a relatively rapid growth rate while having a short life span (3.5 years maximum recorded age in both locations). The obtained growth parameters for combined sexes were L_∞ = 14.02 cm (TL), k = 0.45, t₀ = -1.02 and L_∞ = 11.76 cm (TL), k = 0.62, t₀ = -1.43 in the Sardinian and Sicilian Seas, respectively. Shape analysis revealed that otolith morphology might distinguish between Sardinian and Sicilian populations, which warrants further investigation. The reconstructed otolith outlines differed significantly between the two sampled locations. These morphological discrepancies are most likely due to a mix of genetic and environmental factors.</p>","PeriodicalId":15794,"journal":{"name":"Journal of fish biology","volume":" ","pages":""},"PeriodicalIF":1.7,"publicationDate":"2025-06-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144275054","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":"Structure and composition of yellowtail kingfish (Seriola lalandi) otoliths: implications for using aquaculture-reared fish to reconstruct life histories.","authors":"Belinda K Goddard, Laura M Otter, Julian M Hughes, Fabrice R A Jaine, Jasmin C Martino, Ulrike Troitzsch, Jackson Doherty, Hayden T Schilling","doi":"10.1111/jfb.70110","DOIUrl":"https://doi.org/10.1111/jfb.70110","url":null,"abstract":"<p><p>Understanding fish life history is essential for effective management of fisheries, but continuous tracking over lifetime temporal scales can be difficult. Fish otoliths contain a natural biogeochemical record of ambient environmental conditions and habitat use over such scales. However, ecological interpretations of these elemental compositions can be influenced by the structural composition of calcium carbonate otoliths, which can vary between wild and aquaculture fish as well as across species. As such, we used in situ confocal micro-Raman spectroscopy and powder X-ray diffraction to assess and quantify, respectively, the calcium carbonate polymorphs of the otoliths of aquaculture and wild yellowtail kingfish (Seriola lalandi) to validate whether the otoliths from aquaculture fish can be used to interpret patterns seen in the otoliths of wild fish. We then analysed major and minor trace elements using wavelength dispersive X-ray spectroscopy to investigate the potential habitat use of wild S. lalandi. The elemental composition of S. lalandi otoliths was examined across three cross-sectioned growth zones: the first (i.e. oldest) annulus (growth ring), the outermost (i.e. most recent) annulus and mid-way between these. All otoliths were shown to be composed of aragonite, with the exception of small proportions (0.5 wt%) of vaterite in a single wild S. lalandi otolith. This finding indicates that otoliths of aquaculture S. lalandi, reared in known conditions, are appropriate to interpret stable isotope analyses in wild S. lalandi. Wild-caught S. lalandi otoliths had concentrations of barium and manganese below detectable limits (<0.2 and <0.01 wt%, respectively) inferring that S. lalandi were not in estuarine or brackish environments when the analysed annuli were formed, suggesting these environments are not used for spawning.</p>","PeriodicalId":15794,"journal":{"name":"Journal of fish biology","volume":" ","pages":""},"PeriodicalIF":1.7,"publicationDate":"2025-06-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144275068","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":"Assessing the intraspecific osteological variation in the spottail shiner (Hudsonius hudsonius) (Cypriniformes: Leuciscidae).","authors":"Erika K Jessen","doi":"10.1111/jfb.70107","DOIUrl":"https://doi.org/10.1111/jfb.70107","url":null,"abstract":"<p><p>Hudsonius hudsonius (Cypriniformes: Leuciscidae), commonly known as the spottail shiner, is a small cyprinoid fish species found across much of North America. H. hudsonius has traditionally been regarded as one of the most basal and plesiomorphic species among the notropin fishes, that is, fishes traditionally placed in or associated with the large, polyphyletic genus Notropis, including but not limited to Alburnops, Cyprinella, Ericymba, Lythrurus, Miniellus and Paranonotropis. The basal nature of H. hudsonius has been further corroborated by recent molecular studies. The osteology of notropin fishes has either focused on a specific region of the skeleton, including the cranium, pharyngeal teeth and dental formulae, or the caudal skeleton. Others have aimed to determine evolutionary relationships using osteological characteristics. However, no research has focused on the osteology of H. hudsonius specifically nor emphasized the intraspecific osteology of a single notropin species. Thus, this study aimed to describe and analyse key osteological characters of H. hudsonius, highlighting key osteological variants within and among 15 populations from Alberta, the Northwest Territories, Manitoba and Ontario. Particular attention is given to the elements of the oral jaws, suspensorium, opercular series, branchial apparatus, hyoid region, circumorbital series, pectoral girdle, pelvic girdle, caudal skeleton and skull. My analysis of the osteology of H. hudsonius reveals variation in all examined regions except the pelvic girdle. Regional differentiation between eastern and western populations is especially evident in the degree of fusion of the pectoral girdle, fusion of the parhypural and first hypural of the caudal skeleton and shape of the urohyal. The results of this analysis provide an overview of the osteology of a basal notropin species and highlight which regions are subject to variation. It also raises further questions about the current taxonomic classification of H. hudsonius based on the regional differences observed here.</p>","PeriodicalId":15794,"journal":{"name":"Journal of fish biology","volume":" ","pages":""},"PeriodicalIF":1.7,"publicationDate":"2025-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144266400","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":"Potential metabolic records in isotope signals of chondrichthyan hard tissues.","authors":"Eric Díaz-Delgado, Ming-Tsung Chung, Sarah Magozzi, Trevor J Willis, Clive N Trueman","doi":"10.1111/jfb.70109","DOIUrl":"https://doi.org/10.1111/jfb.70109","url":null,"abstract":"<p><p>Recent advances have demonstrated that the field metabolic rates (FMRs) of teleost fishes can be quantified from stable isotope compositions of carbonate-biomineralized otoliths. Bones and teeth, in addition to bioapatite, contain carbonate and should retain a similar isotopic expression of metabolic rate. Chondrichthyan skeletons are cartilaginous, but in most species some degree of bio-apatite mineralisation of cartilage has been determined. Here we tested the potential to estimate the FMRs of chondrichthyan fishes from the isotopic composition of calcified cartilage. Our results indicate that δ¹³C values of vertebrae and jaws covary with assumed activity levels, body mass and temperature in a manner consistent with them being influenced by the metabolic rate of the organisms using δ¹⁸O values as a proxy. Highly active thunniform species had significantly more negative δ¹³C_vert (and higher C_resp) values than species with less active swimming types, conforming to expectations. Values of δ¹³C in carbonate from jaws were lower in immature elasmobranchs Raja asterias than in Mustelus sp., potentially reflecting mass effect differences in metabolic rates. Tooth enameloid showed anomalous carbon isotope compositions which imply direct exchange with dissolved inorganic carbon during crystal growth. Many knowledge gaps related to the relationships between structural tissue isotope compositions and carbon respiratory physiology of elasmobranch remain. However, our results provide evidence that carbon isotopes of structural carbonate in cartilaginous tissues of chondrichthyan fishes offer potential as a proxy for metabolic level.</p>","PeriodicalId":15794,"journal":{"name":"Journal of fish biology","volume":" ","pages":""},"PeriodicalIF":1.7,"publicationDate":"2025-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144266409","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":"Investigating the dynamics of the aquatic community in Oslofjord through time series analysis of eDNA.","authors":"Sibusiso Mahlangu, Isabelle Ewers, Cintia Oliveira Carvalho, Audun Schrøder-Nielsen, Micah Dunthorn, Hans Erik Karlsen, Grete Sørnes, Louise Chavarie, Dag Endresen, Jonathan Stuart Ready, Hugo J de Boer, Quentin Mauvisseau","doi":"10.1111/jfb.70105","DOIUrl":"https://doi.org/10.1111/jfb.70105","url":null,"abstract":"<p><p>Understanding the temporal dynamics of marine communities is critical for assessing ecosystem health and guiding conservation efforts. Here, we conducted a survey using environmental DNA (eDNA) metabarcoding with two primer sets, MiFish and Elas02, to investigate seasonal and interannual changes in the fish community of Oslofjord (Norway) over two consecutive years. Using the MitoFish reference database through the Global Biodiversity Information Facility querying tool, we identified 63 fish species and found significant changes in the dominant taxa between seasons and years. Clupea harengus (Atlantic herring) consistently peaked in early spring, while Scomber scombrus (Atlantic mackerel) dominated winter months in the second year. The MiFish primer set showed increased species richness in the second year, whereas the Elas02 primer set showed stable richness despite compositional turnover. Non-metric multidimensional scaling revealed distinct community separation between years in presence/absence of data, driven by species turnover rather than abundance read changes. Our findings support the use of eDNA metabarcoding to capture fine-scale (bi-monthly) temporal dynamics and emphasise the importance of multi-year datasets for distinguishing ecological trends from stochastic changes. This strategy improves monitoring practices for marine ecosystems under anthropogenic stressors.</p>","PeriodicalId":15794,"journal":{"name":"Journal of fish biology","volume":" ","pages":""},"PeriodicalIF":1.7,"publicationDate":"2025-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144275067","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 new blue-spotted Maskray species (Neotrygon, Dasyatidae) from Fiji.","authors":"Kerstin Glaus, William T White, Helen L O'Neill, Sarah Thurnheer, Sharon A Appleyard","doi":"10.1111/jfb.70094","DOIUrl":"https://doi.org/10.1111/jfb.70094","url":null,"abstract":"<p><p>Neotrygon romeoi n. sp. (Dasyatidae), a new species of blue-spotted maskray from Fiji, previously confused with Neotrygon kuhlii (Müller and Henle 1841) or Neotrygon trigonoides (Castelnau 1873), is described based on nine specimens (310-397 mm disc width) from Fiji. Neotrygon romeoi n. sp. is a large maskray with a broadly angled snout, long claspers in adult males and a median row of thornlets extending from the nape to the tail base. Fresh specimens have a brownish dorsal surface with dark mask-like marking covering across and between the eyes (sometimes indistinct), two large brown to black branchial blotches posterior to the spiracles, numerous black pepper-like spots mainly concentrated in masked area and the branchial blotches, and sometimes having small, dark-edged pale blue to whitish spots. The new species is further characterized by ocellated spots in the medial belt usually absent. Molecular analysis based on 570 bp of partial cytochrome c oxidase subunit 1 (COI) mitochondrial gene also supports that N. romeoi n. sp. is a distinct species from other congeners. The new species, known only from the Fiji Islands, may thus warrant inclusion in Fiji's Endangered and Protected Species Act.</p>","PeriodicalId":15794,"journal":{"name":"Journal of fish biology","volume":" ","pages":""},"PeriodicalIF":1.7,"publicationDate":"2025-06-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144258201","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":"Distribution and taxonomic identity of the species of Narcine (Toperdiniformes: Narcinidae) in the southwestern Atlantic Ocean.","authors":"Marcus Vinicius Gonçalves Araújo, Ricardo de Souza Rosa, João Paulo Capretz Batista da Silva","doi":"10.1111/jfb.70106","DOIUrl":"https://doi.org/10.1111/jfb.70106","url":null,"abstract":"<p><p>The genus Narcine is the most diverse among electric rays of the order Torpediniformes and is also the only electric ray genus with more than one species occurring in South American waters: Narcine brasiliensis and Narcine bancroftii. The first species has been historically described as distributed from Brazil's southeast coast down to northern Argentina, whereas the latter is distributed from northern South America to Central America, and the southernmost coast of North America. This revision of occurrences of the genus for the coast of Brazil, with focus on the northeast region, expands the range of distribution of both species. These species were previously considered to have very distinct areas of occurrence but actually present some degree of overlap on their distributional areas, with the northeast coast of Brazil acting as the intersection of both species' range of occurrence. Additionally, this study discusses the diagnostic characteristics for identifying Narcine species and highlights the historical scientific bias surrounding this group and how it ultimately can lead to a misrepresentation of its geographic distribution and conservation status.</p>","PeriodicalId":15794,"journal":{"name":"Journal of fish biology","volume":" ","pages":""},"PeriodicalIF":1.7,"publicationDate":"2025-06-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144248228","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":"Enhancing fish community monitoring at a cabled observatory by combining environmental DNA and imaging analysis.","authors":"Maddalena Tibone, Marco Francescangeli, Sergio Stefanni, Jacopo Aguzzi, Bernadette O'Neill, Joaquin Del Rio, Daniel Mihai Toma, Luca Mirimin","doi":"10.1111/jfb.70096","DOIUrl":"https://doi.org/10.1111/jfb.70096","url":null,"abstract":"<p><p>Cabled multiparametric observatories are sustaining ecological monitoring by collecting long-term real-time biological and environmental data. Here, we investigated fish communities by sampling environmental DNA (eDNA) over 4 days near the multiparametric cabled video-observatory OBSEA (Northwestern Mediterranean Sea). The multi-marker eDNA metabarcoding approach resulted in an increased species detection and helped provide a more comprehensive view of the local fish community when combined with imaging data. These results underline the potential of omics methods in long-term monitoring of economically and ecologically important fish species.</p>","PeriodicalId":15794,"journal":{"name":"Journal of fish biology","volume":" ","pages":""},"PeriodicalIF":1.7,"publicationDate":"2025-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144248229","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":"Larval Arctic cod (Boreogadus saida) exhibit stronger developmental and physiological responses to temperature than to elevated pCO₂.","authors":"Emily Slesinger, Louise A Copeman, Benjamin J Laurel, Mary Beth R Hicks, Paul J Iseri, Michelle A Stowell, Thomas P Hurst","doi":"10.1111/jfb.70082","DOIUrl":"https://doi.org/10.1111/jfb.70082","url":null,"abstract":"<p><p>High-latitude ecosystems are simultaneously warming and acidifying under ongoing climate change. Arctic cod (Boreogadus saida) are a key species in the Arctic Ocean and have demonstrated sensitivity to ocean warming and acidification as adults and embryos, but their larval sensitivity to the combined stressors is unknown. In a laboratory multi-stressor experiment, larval Arctic cod were exposed to a combination of three temperatures (1.8, 5 and 7.3°C) and two carbon dioxide (pCO₂) levels (ambient: 330 μatm, high: 1470 μatm) from hatching to 6-weeks of growth. Mortality rates were highest at 7.3°C (5% day^-1); however, both growth and morphometric-based condition were also highest at this temperature. When these metrics were assessed via a mortality: growth (M:G) ratio, 5°C appeared to be an optimal temperature for net population biomass, as faster growth at 7.3°C did not fully compensate for higher mortality. In contrast, although morphometric-based condition was lowest at 1.8°C, lipid-based condition was highest, which may reflect prioritization of lipid storage at cold temperatures. The capacity of larval Arctic cod to acclimate to a range of temperatures was exhibited by two lipid-based indicators of membrane fluidity, including a ratio of unsaturated to saturated fatty acids and a ratio of polar lipids to sterols. The effects of elevated pCO₂ were subtle, as well as temperature- and metric dependent. When exposed to elevated pCO₂ levels, Arctic cod at 1.8°C exhibited signs of lipid dysregulation, suggesting potential interference with membrane acclimation; larvae at 5°C were in lower morphometric-based condition; and larvae at 7.3°C had higher activity eicosanoid substrates, indicating possible physiological stress. Overall, Arctic cod physiological response to temperature variation was more pronounced than their response to elevated pCO₂. Future projections of pCO₂ effects on Arctic cod health in a warming ecosystem will need to consider the complexity of temperature-dependence and the specificity of multiple physiological responses.</p>","PeriodicalId":15794,"journal":{"name":"Journal of fish biology","volume":" ","pages":""},"PeriodicalIF":1.7,"publicationDate":"2025-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144234256","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}