Fisheries Research最新文献

{"title":"A modeling framework to meta-analyse discard survival experiments illustrated by Nephrops norvegicus in European demersal trawl fisheries","authors":"M. Morfin ,&nbsp;E. Savina ,&nbsp;H.P. Benoît ,&nbsp;M. Teixeira Alves ,&nbsp;A. Albalat ,&nbsp;T. Catchpole ,&nbsp;C. Fox ,&nbsp;M. McHugh ,&nbsp;S. Méhault ,&nbsp;H. Nilsson ,&nbsp;M. Oliver ,&nbsp;D. Valentinsson ,&nbsp;M. Breen","doi":"10.1016/j.fishres.2025.107513","DOIUrl":"10.1016/j.fishres.2025.107513","url":null,"abstract":"<div><div>Good knowledge of discard survival in commercial or recreational fisheries is key in enabling more accurate stock assessments and supporting evidence-based regulatory measures; however, estimating discard survival is challenging. To improve the estimation of survival rate at regional scales and to identify key drivers, we present here a meta-regression (MR) framework that considers differences in experimental design, quality and context specificity between individual studies. First, studies are filtered through a systematic critical review to exclude results considered too uncertain or potentially biased. Discard survival rates are then corrected to limit estimation method bias, and associated uncertainty is included as a weighting. The MR is finally applied under a hierarchical mixed-effects framework to account for the nested structure of the data and correct for experimentally induced mortality bias. We illustrate how the MR can address methodological and analytical limitations in discard survival studies using Norway lobster (<em>Nephrops norvegicus</em>) discarded from European demersal trawl fisheries. While some effects were already identified from single studies, such as the temperature change, the MR highlighted other effects not perceptible at a regional scale, varying more at the scale of the fishing operation, such as tow duration, but also related to the size of experimental subjects and physiology. This flexible framework has applicability to other species or contexts. The case study provided insights to make recommendations for future survival studies to improve the predictive potential of this type of MR, such as the importance of following standardized protocols and analyses, and to report data at the finest resolution.</div></div>","PeriodicalId":50443,"journal":{"name":"Fisheries Research","volume":"290 ","pages":"Article 107513"},"PeriodicalIF":2.3,"publicationDate":"2025-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144912236","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Letter to the Editor re: Millar and Broadhurst (2025): “Incorrect inference from size-selectivity studies due to widespread misuse of bootstrap confidence bands” [Fisheries Research 281, 107225]","authors":"André E. Punt,&nbsp;Beatriz Morales-Nin","doi":"10.1016/j.fishres.2025.107514","DOIUrl":"10.1016/j.fishres.2025.107514","url":null,"abstract":"","PeriodicalId":50443,"journal":{"name":"Fisheries Research","volume":"290 ","pages":"Article 107514"},"PeriodicalIF":2.3,"publicationDate":"2025-08-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144904499","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Regional migration patterns of young-of-the-year Japanese jack mackerel (Trachurus japonicus) revealed by tissue stable isotope analysis in the Uwa Sea, Japan","authors":"Daisuke Hashida ,&nbsp;Takeshi Tomiyama","doi":"10.1016/j.fishres.2025.107505","DOIUrl":"10.1016/j.fishres.2025.107505","url":null,"abstract":"<div><div>Understanding fish migration patterns is crucial for the effective management of stocks. While distinct patterns, such as resident and migratory types, have been suggested for the Japanese jack mackerel (<em>Trachurus japonicus</em>), their specific patterns along the Pacific coast remain unclear. In the Uwa Sea, a key region of the Pacific coast of Japan, potential differences in the migration of young-of-the-year (YOY) fish between the north and south have been empirically recognized. In this study, the migration patterns of YOY Japanese jack mackerel in the Uwa Sea were elucidated. A linear mixed model (LMM) for tissue stable isotope ratios (δ¹³C and δ¹⁵N) was constructed to explore the spatial variation. Seasonal variation in tissue stable isotope ratios, abundance, and fork length (FL) across the Uwa Sea was also compared to examine migration patterns. Our analysis revealed that latitude significantly affected the variation in δ¹⁵N, suggesting that δ¹⁵N variation was influenced by spatial variation in the δ¹⁵N baseline. Significant differences in the abundance and mean FL between the northern and southern areas, as well as latitudinal differences in δ¹³C and δ¹⁵N responses to FL, suggest limited movement of YOY Japanese jack mackerel from the southern to the northern area. While δ¹³C values increased with growth in both areas, a significant increase in δ¹⁵N values was observed with growth exclusively in the northern area. Furthermore, in the northern area, there was a significant correlation between the recruitment (May to June) and post-recruitment (July to April) abundance indices, which were not observed in the southern area. These findings suggest that migration patterns vary regionally, with populations in some areas remaining localized to support subsequent stocks, whereas populations disperse and reaggregate over a wider region in other areas. This underscores the importance of considering regional differences in migration patterns when developing stock management strategies to ensure the sustainability of this species.</div></div>","PeriodicalId":50443,"journal":{"name":"Fisheries Research","volume":"290 ","pages":"Article 107505"},"PeriodicalIF":2.3,"publicationDate":"2025-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144904498","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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 comparison of the life history and distribution of vermilion rockfish (Sebastes miniatus) and its cryptic pair, sunset rockfish (S. crocotulus) along the Pacific Coast","authors":"John H. Harms ,&nbsp;Anita Wray ,&nbsp;John R. Hyde ,&nbsp;Gary C. Longo ,&nbsp;Jennifer A. Hempelmann ,&nbsp;Anna E. Elz ,&nbsp;R. Matthew Barnhart ,&nbsp;James A. Benante ,&nbsp;Aaron C. Chappell ,&nbsp;Peter H. Frey ,&nbsp;Colin L. Jones ,&nbsp;Betty Kamikawa ,&nbsp;Aimee A. Keller ,&nbsp;Raymond Lagmay ,&nbsp;Laurel S. Lam ,&nbsp;Patrick J. McDonald ,&nbsp;Linda Park ,&nbsp;Ana Ramón-Laca ,&nbsp;Omar Rodriguez ,&nbsp;Victor H. Simon ,&nbsp;Krista M. Nichols","doi":"10.1016/j.fishres.2025.107504","DOIUrl":"10.1016/j.fishres.2025.107504","url":null,"abstract":"<div><div>The presence of cryptic species within exploited fisheries presents challenges for researchers and managers who must balance occasionally divergent commercial and conservation goals. These challenges may be exacerbated when the component taxa have different life histories and historical catches. We used advanced genomics techniques to separate an economically and ecologically important cryptic species pair, vermilion rockfish and sunset rockfish (Genus: <em>Sebastes</em>), into its constituent species. Over 30,000 tissue specimens were analyzed to clarify species-specific life history traits and improve the information available for research and management. Vermilion rockfish were observed from Canada to Mexico, generally in waters shallower than 130 m, while sunset rockfish were encountered from Point Arena, California to Mexico and were common in both shallow waters and offshore banks to at least 300 m. Sunset rockfish grew faster and reached larger maximum sizes, but vermilion rockfish exhibited older maximum ages. As a result of spatial and depth-based management which disproportionately protected deeper waters, vermilion rockfish have likely been subjected to greater commercial and recreational fishing pressure than sunset rockfish throughout most of the 21st century. Improved understanding of the unique life and catch histories of the two species may have implications for how this and other cryptic species pairs are assessed and managed in the future.</div></div>","PeriodicalId":50443,"journal":{"name":"Fisheries Research","volume":"290 ","pages":"Article 107504"},"PeriodicalIF":2.3,"publicationDate":"2025-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144904497","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Corrigendum to “The trade industry for nautiluses and the need for their conservation” [Fish. Res. 289 (2025) 107493]","authors":"C.J. Barrett ,&nbsp;K. Vossen ,&nbsp;S. Stott ,&nbsp;G.J. Barord","doi":"10.1016/j.fishres.2025.107503","DOIUrl":"10.1016/j.fishres.2025.107503","url":null,"abstract":"","PeriodicalId":50443,"journal":{"name":"Fisheries Research","volume":"290 ","pages":"Article 107503"},"PeriodicalIF":2.3,"publicationDate":"2025-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145027283","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Reliability of self-reported catch and effort data via a smartphone application in a multi-species recreational fishery","authors":"Bernat Morro ,&nbsp;Inmaculada Riera-Batle ,&nbsp;Antoni Mira ,&nbsp;Clara Mecinas ,&nbsp;Antoni M. Grau ,&nbsp;Josep Alós","doi":"10.1016/j.fishres.2025.107502","DOIUrl":"10.1016/j.fishres.2025.107502","url":null,"abstract":"<div><div>The high spatial-temporal variability in fishing effort, combined with the difficulty of monitoring individual activities, hampers effective management of recreational fisheries. Angler smartphone applications (apps) offer a promising digital tool for self-reporting of fishing effort (E) and catch per unit of effort (CPUE). However, despite their growing use for data collection in recreational fisheries, the existing literature on their performance remains limited, raising concerns about potential biases in the data. Since 2019, daily trips inside the 12 partially protected Marine Protected Areas (MPAs) of the Balearic Islands (Spain) must be self-reported via the “Diari de Pesca Recreativa” app (the App), recording fishing E and CPUE. This study aimed to evaluate the App’s performance in reporting recreational fisheries data over a six-year period. Data obtained via the App (3672 trip self-reports) were compared to data collected through a standard method (360 on-site creel surveys). Importantly, the App represents complete fishing trips, whereas creel surveys record only partial trips, as they are conducted mid-activity<em>.</em> This methodological difference in trip duration reporting was expected to influence estimates of E (hours · angler · trip) and possibly CPUE (catch · E⁻¹). These estimates were compared across datasets overall, as well as stratified by month, fishing type, MPA, and for key target species. Data from the App tended to overestimate E, while creel surveys underestimated it, and significant differences were observed between whole datasets for E and CPUE. However, when stratified, most groups showed no statistically significant differences in E and CPUE estimates. With these generally comparable results, and given that the limitations of one are offset by the strengths of the other, combining both data sources will improve reliability. The App not only generates a higher volume of trip data but also digitizes data collection through a user-friendly platform for self-reporting, enabling automation and analytics for fisheries monitoring and management of recreational fisheries. Because reporting was mandatory in this case, biases commonly associated with voluntary apps (e.g. avidity, age bias) are unlikely to apply, making this study particularly relevant for assessing the utility of mandatory app-based data in fisheries management.</div></div>","PeriodicalId":50443,"journal":{"name":"Fisheries Research","volume":"289 ","pages":"Article 107502"},"PeriodicalIF":2.3,"publicationDate":"2025-08-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144851784","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"New advances and challenges from the 7th International Otolith Symposium","authors":"Francisco Cerna,&nbsp;Guido Plaza,&nbsp;Esteban Avigliano,&nbsp;André Martins Vaz-dos-Santos","doi":"10.1016/j.fishres.2025.107499","DOIUrl":"10.1016/j.fishres.2025.107499","url":null,"abstract":"<div><div>Fish otoliths are calcareous structures that have been widely used for decades to determine in age and growth determination as basic information that is paramount for the management of fish stocks globally. The rapid growth in in technological advances in the last decades, such as the analysis of the chemical composition within the otolith structure and of the otolith morphometry, has meant that otoliths can now be used more widely to inform our knowledge of the life history of fishes, both past and present, and of fish population changes. This special issue of Fisheries Research contains the latest contributions from the 7th International Otolith Symposium (IOS 2023), held in October 2023, in Viña del Mar, Chile. A total of 205 delegates from 39 countries participated in the IOS 2023, with scientific presentations covering numerous topics related to otolith research. These included: otolith formation and composition, evolutionary biology of fish, life history studies, and aquatic ecosystem ecology. Studies using chemical composition of otoliths were seen to be providing valuable insights into habitat use, demographic patterns, trophic ecology, palaeo-reconstruction of ichthyofauna, physiological processes, and fish migration pathways. In addition, case studies using otolith-based biochronologies, demonstrated the usefulness and application of this technique to help reveal biological patterns at annual to centennial time scales to potentially provide long-term ecological insights into the impacts of climate change on aquatic ecosystems. The symposium scope was enhanced by four disciplinary workshops and six keynote conferencesspeakers, all of which highlighted the importance of continued research in otolith science, and the need for interdisciplinary approaches combining otolith-based records with other fields of study.</div></div>","PeriodicalId":50443,"journal":{"name":"Fisheries Research","volume":"289 ","pages":"Article 107499"},"PeriodicalIF":2.3,"publicationDate":"2025-08-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144886151","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Seasonal and sex-based variations in energy use in wild plaice: Differences in energetic costs of spawning and feeding behaviours outweigh effects of temperature on field metabolism","authors":"Joseph Jones ,&nbsp;Ewan Hunter ,&nbsp;Clive Trueman","doi":"10.1016/j.fishres.2025.107476","DOIUrl":"10.1016/j.fishres.2025.107476","url":null,"abstract":"<div><div>Wild animals frequently show strong variations in allocations of energy to growth, reproduction and locomotion, typically corresponding to seasonal variations in temperature or resource availability. Seasonal variations in energy allocation to growth are commonly expressed in hard tissues as growth bands, but energy allocation to growth may be decoupled from absolute energy use especially in reproductively active individuals. Consequently, determining variations in absolute energy use in wild animals through annual cycles is challenging, particularly for aquatic animals such as fishes. The stable isotopic composition of carbon in the otolith of marine teleost fishes co-varies with the rate of oxidation of respiratory carbon and therefore serves as a proxy for energy use. Stable isotope analyses of otolith aragonite allow reconstruction of seasonal variations in total energy use independent from sclerochronological assessments of growth. Here we describe how total energy use varies seasonally within a sample of 272 free-roaming European plaice from the North Sea. Estimated energy (field metabolic rate) use peaked in early summer months prior to spawning, co-incident with formation of otolith opaque zones and increases in body condition, but decoupled from seasonal variations in experienced temperature. Maximum observed FMR estimates in years characatreised by high metabolc rates, approach laboratory inferred maximum metabolic rates, implying maximum feeding rates are limited by respiratory capacity rather than prey availability. The strong co-incidence between opaque zone formation and high energy use supports suggestions that otolith transparency is directly related to the rate of production of respiratory CO₂ (and therefore metabolic rate), and indirectly associated with somatic growth rates. Seasonal patterns of energy use differed between sexes. Males showed reduced energy use through summer months compared to females, but higher apparent energy use outside of the summer feeding season. Female-biased sexual size dimorphism in plaice may emerge via both greater energy allocation to reproduction and reduced energy acquisition in summer in males. Observed seasonal, sex-based and among-individual variations in energy use far exceed predicted thermal effects on enzyme reaction rates, implying that individual variations in realized field metabolic rates are constrained more by physiological and behavioural factors than by external ambient temperature. Our observations provide context for considering the implications of temperature on energy partitioning and physiological performance in wild fish populations across seasons and demonstrate how isotopic proxies for energy use compliment energy budget models and sclerochronological growth analysis.</div></div>","PeriodicalId":50443,"journal":{"name":"Fisheries Research","volume":"289 ","pages":"Article 107476"},"PeriodicalIF":2.3,"publicationDate":"2025-08-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144827543","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"High-resolution fishing activity data of gillnetters reveal unexpected fishing pattern on western Baltic cod during spawning closure","authors":"Steffi Meyer ,&nbsp;Juan Santos ,&nbsp;Uwe Krumme","doi":"10.1016/j.fishres.2025.107485","DOIUrl":"10.1016/j.fishres.2025.107485","url":null,"abstract":"<div><div>The understanding of small-scale fishing activities in shallow coastal waters is scarce because fishery-dependent data are often not collected at the required spatio-temporal resolution. During a two-month fishing closure of cod in 2018 in the western Baltic Sea, German fishers self-reported their at-sea activities in waters shallower than 20 m at a high spatio-temporal resolution using a smartphone application. Linear mixed modelling was used as an explorative approach to analyse 365 trips from 23 cod gillnet fishers. The aim was to identify a set of explanatory variables that would best describe the pattern of the cod landings per unit effort. In addition, it was expected that fishers would on average set the nets as deep as possible to still reach parts of the cod spawning aggregations. In the end, it was not possible to identify a clear single best model and the high-resolution fishing activity data showed that fishers stayed in waters shallower than expected. Together with available biological data from regular monitoring, the results suggest that fishers targeted the dominant 2016-cohort of cod in 2018, i.e. the age-2 cod, in shallow coastal waters. This indicates that the tactic of small-scale fishers was altered due to changes in resource availability. The opportunity to analyse highly resolved spatio-temporal fishery-dependent data of a European small-scale fishery highlights the value of such data to improve the understanding on how fishing activities are shaped by the distribution of a target species.</div></div>","PeriodicalId":50443,"journal":{"name":"Fisheries Research","volume":"289 ","pages":"Article 107485"},"PeriodicalIF":2.3,"publicationDate":"2025-08-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144780241","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The trade industry for nautiluses and the need for their conservation","authors":"C.J. Barrett ,&nbsp;K. Vossen ,&nbsp;S. Stott ,&nbsp;G.J. Barord","doi":"10.1016/j.fishres.2025.107493","DOIUrl":"10.1016/j.fishres.2025.107493","url":null,"abstract":"<div><div>Decades of intense and unregulated fishing of nautiluses (<em>Allonautilus</em> and <em>Nautilus</em>) have resulted in collapsed fisheries, degraded local economies, the depletion of a lineage that has existed for over 500 million years, and impacts to an ecosystem that is vastly understudied. As early as the 1980s, there were anecdotal reports of population collapse and local extinction, which were later quantified with scientific data in the 2010s. These data led to the first international regulations of the nautilus shell trade in 2017 as an attempt to limit the depletion of nautilus populations. However, little has been published in the way of conservation intervention outcomes to help protect nautiluses from overexploitation. Nautiluses are representative of a unique curio item as their products are primarily made for the tourist trade and are somewhat under the radar. Though, the life history strategies of nautiluses of delayed maturity, low fecundity, and long developmental time signify that that group is inherently vulnerable to unregulated pressure on the population. There is a need to promote a public understanding of the sensitivities of nautiluses to overfishing, as well as a need for effective population monitoring and enforceable management strategies for nautilus fisheries. Here, we suggest a potential model for a nautilus management strategy that considers the nautiluses and their ecosystems, as well as the local communities.</div></div>","PeriodicalId":50443,"journal":{"name":"Fisheries Research","volume":"289 ","pages":"Article 107493"},"PeriodicalIF":2.3,"publicationDate":"2025-08-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144771745","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}