Fish and Fisheries最新文献

{"title":"Behavioural Diversity of Fishes: Concepts, Drivers and Its Role in Conservation and Management","authors":"Marie Prchalová, Robert Arlinghaus, Samuel Westrelin, Ivan Jarić, Michael G. Bertram, Josep Alós, Henrik Baktoft, Jack A. Brand, Tomas Brodin, Adolfo Cordero‐Rivera, Carlina Feldmann, Ryo Futamura, Stefan Hont, Pascal Klamser, Cecilie Iden Nilsen, Johann Mourier, Karl Øystein Gjelland, Esben Moland Olsen, Polona Pengal, Rubén Rabaneda‐Bueno, Milan Říha, Theresa Rueger, Holger Schielzeth, Marco Signaroli, Marija Smederevac‐Lalić, Christopher T. Monk","doi":"10.1111/faf.70107","DOIUrl":"https://doi.org/10.1111/faf.70107","url":null,"abstract":"Human activity has altered nearly all ecosystems on Earth, contributing to substantial biodiversity loss across taxonomic, genetic and functional dimensions, from the intraspecific to the ecosystem scale. Yet some components of biodiversity remain hidden or underappreciated, including behavioural diversity. Behaviour is often among the earliest whole‐organism responses to environmental change, and diversity in behaviour can occur within individuals, among individuals, among populations and across communities and ecosystems. This variation may influence growth, survival, reproduction, ecological interactions and responses to anthropogenic pressures, although its effects on population stability and resilience are likely context‐, scale‐ and component‐dependent. In this review, we examine behavioural diversity in fishes, defined here as variation in behavioural traits across levels of biological organisation, from individuals to ecosystems. Our review has two complementary aims. First, we provide a conceptual overview of behavioural diversity, clarify how it differs from related constructs such as personality, plasticity, and behavioural syndromes, and summarise the evolutionary, ontogenetic, ecological, stochastic and anthropogenic processes that generate or erode it. Second, we evaluate why behavioural diversity matters for fish ecology, fisheries management, aquaculture, restoration and conservation. We conclude by identifying key research needs, including improved quantification, stronger empirical links between behavioural diversity and ecological outcomes, and the development of management approaches sensitive to behavioural diversity. More explicit consideration of behavioural diversity should improve our ability to predict fish behavioural diversity responses and to design conservation and management measures that account for variation rather than only average behavioural responses.","PeriodicalId":169,"journal":{"name":"Fish and Fisheries","volume":"51 1","pages":""},"PeriodicalIF":6.7,"publicationDate":"2026-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148877358","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Lack of Capacity: The Not‐So‐Hidden Factor Undermining Fisheries Governance","authors":"Haas Bianca, Aqorau Transform, Lennan Mitchell","doi":"10.1111/faf.70114","DOIUrl":"https://doi.org/10.1111/faf.70114","url":null,"abstract":"The demand for marine resources is increasing, and an increasing number of fish stocks are fully or overexploited. To turn this downward projection around, states need to strengthen the effectiveness, equity and implementation of fisheries management measures. One important component that often determines the performance of fisheries management is the capacity of the participating parties. Despite the increased global awareness regarding the need for enhanced capacity support, many coastal developing states still lack the skills and tools to implement conservation and management measures effectively. In this paper, we highlight some of the current issues in capacity building, looking at the individual, national and regional levels. We argue that capacity is a core determinant of equity and effectiveness in fisheries governance. Furthermore, we describe the potential of complementary mechanisms to provide capacity support. Specifically, we focus on the climate change regime and the Agreement on Biodiversity Beyond National Jurisdiction. Unless coastal developing states have the sustained scientific, legal, technical, institutional and financial capacity to participate meaningfully in regional fisheries management organisations, the adoption of conservation and management measures will not necessarily translate into effective or equitable outcomes.","PeriodicalId":169,"journal":{"name":"Fish and Fisheries","volume":"134 1","pages":""},"PeriodicalIF":6.7,"publicationDate":"2026-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148877357","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Statistical Power and the Effects of Old, Wise and Large Fish","authors":"Øystein Langangen, Nicolas Dupont, Jan Heuschele, Joël M. Durant","doi":"10.1111/faf.70113","DOIUrl":"https://doi.org/10.1111/faf.70113","url":null,"abstract":"Currently, a major concern for fish populations is their declining resilience to climate events, reduced individual sizes and productivity and increased instability. Population dynamics of fish are often dominated by recruitment, i.e., the number of young fish entering the population. The contribution of old and large female fish (often denoted BOFFs) to recruitment is expected to be disproportionately large; however, the importance is still debated. There is currently a move to expand quantitative knowledge of the effects of BOFFs on recruitment to better cover the thousands of fish species and populations worldwide. Here, we show, using simulations, that time‐series length and uncertainty often reduce the statistical power to levels where the effects are no longer detectable. We suggest system‐specific methods evaluation to reduce the risks of erroneous conclusions.","PeriodicalId":169,"journal":{"name":"Fish and Fisheries","volume":"22 1","pages":""},"PeriodicalIF":6.7,"publicationDate":"2026-08-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148809898","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Addressing Bias in Non-Probability Fisheries Surveys Using Multilevel Regression and Poststratification Approaches","authors":"Zachary Radford,&nbsp;Wendy Edwards,&nbsp;Samantha Hook,&nbsp;Bridgid Bell,&nbsp;Rebecca Mills,&nbsp;Grace Farrell,&nbsp;Martin J. Genner,&nbsp;Stephen D. Simpson,&nbsp;Kieran Hyder","doi":"10.1111/faf.70101","DOIUrl":"10.1111/faf.70101","url":null,"abstract":"<p>Quantifying harvest of fish stocks is challenging as census data are often unavailable, so surveys are required. Traditional probability-based surveys use random sampling to obtain representative data that can be scaled to estimate total impact. However, these surveys are costly, so cheaper, non-probability, citizen science surveys of self-selected participants are becoming commonplace. Respondents in these surveys may not be representative and inclusion probabilities are unknown, making weighting difficult. This resembles exit polls, which successfully predict election outcomes using Multi-level Regression and Post-stratification (MRP), but this has not been tested in fisheries. This study applied MRP to quantify UK recreational sea angling (RSA) participation and catches using data from the UK Sea Angling Diary Project. This represents a ‘worst-case’ scenario, as there is no sampling frame and no mandatory reporting. Five Bayesian multi-level models were fitted to two survey datasets: one quantifying participation and days fished, and another location, numbers, and weight of fish caught. Predictions were post-stratified using UK census data. Estimates from the traditional reweighting and MRP were compared, and a simulation approach was used to assess the accuracy and precision of the two methods. MRP reduced self-selection bias and improved estimates in under-represented groups, producing a 40% and 61% improvement for participation and catch, respectively. Average annual UK RSA participation was estimated to be 688,000 anglers, with 6.1 million days fished. Annual catch estimates were 32.4 million fish, weighing 14,876 t. This study demonstrates the value of MRP for reducing bias when analysing and scaling non-probabilistically collected survey data.</p>","PeriodicalId":169,"journal":{"name":"Fish and Fisheries","volume":"27 5","pages":"1088-1106"},"PeriodicalIF":6.3,"publicationDate":"2026-08-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/faf.70101","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148288453","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Advancing Automated Fish Size Estimation From Images: Applications, Challenges and a Case Study for Images Without a Specified Reference Object","authors":"Catarina N. S. Silva,&nbsp;Ricardo Cardoso Pereira,&nbsp;Freddie Heather,&nbsp;Sean Simmons,&nbsp;Asta Audzijonyte","doi":"10.1111/faf.70097","DOIUrl":"10.1111/faf.70097","url":null,"abstract":"<div>\u0000 \u0000 <p>Automatic and accurate estimation of fish sizes from images is essential for many monitoring, fisheries management, stock assessment and conservation efforts. However, current methods often rely on physical reference objects or stereo-camera systems that are not always available. This paper explores the advancements, applications and challenges of automated fish body-size estimation from images, using artificial intelligence (AI) and machine learning (ML) methods. We first introduce key concepts in AI and ML for a non-specialised audience and review existing literature on models used for fish size estimation. We identify key barriers such as a lack of high quality and publicly available datasets, image variability, scattered efforts and the challenges of model generalisation across diverse species. Then we present a novel framework for size estimation from monocular (non-stereo) images without a specified reference object, using a dataset from an angling app. Our approach utilises an efficient, pretrained deep learning-based feature extraction tool integrated with an automated regression pipeline. Our findings demonstrate a promising pathway for size estimation in images without a reference object, with most estimated fish lengths within 10% of their true length. Future research and collaborative efforts should focus on diversifying and sharing training data and integrating metadata. To this end, we created a user-friendly online application, where the community can test the model performance and contribute photos. Finally, it is essential to rigorously test and refine the robustness of current models in real-world fisheries applications and to adopt standardised, comparable metrics for evaluating fish size estimation models across studies.</p>\u0000 </div>","PeriodicalId":169,"journal":{"name":"Fish and Fisheries","volume":"27 5","pages":"1057-1073"},"PeriodicalIF":6.3,"publicationDate":"2026-08-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148288495","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Management Participants Perceive That Structural Barriers, Not Information Needs, Most Impede Adaptation in U.S. Fisheries Management","authors":"Abigail S. Golden,&nbsp;Jacqueline M. Vogel,&nbsp;Arielle Levine,&nbsp;Marissa L. Baskett,&nbsp;Daniel S. Holland,&nbsp;Katherine E. Mills,&nbsp;Timothy Essington","doi":"10.1111/faf.70104","DOIUrl":"10.1111/faf.70104","url":null,"abstract":"<p>Fisheries are facing increasingly frequent and severe climate change-related stressors such as marine heatwaves, harmful algal blooms, and species distribution shifts. Many fisheries management bodies have been working to increase the capacity of their regulatory systems to adapt to these new conditions, but progress has been slow and piecemeal. To identify the most important barriers to this adaptation, in spring 2024 we surveyed 321 fisheries management professionals and fisheries scientists involved in the U.S. regional fisheries management system. This survey revealed broad agreement among respondents about the most and least important barriers to adaptation, regardless of respondents' regional affiliation or role in the management system. In particular, two key barriers emerged as being salient to almost all survey respondents. These barriers were stakeholders focusing on protecting their current interests and/or the status quo (82% agreement) and a tension between the structural rigidity of the U.S. fisheries management system and the flexibility needed to adapt (71.5%). In contrast, conceptual and informational barriers, such as not seeing a need to adapt (4% agreement) and not recognizing the usefulness of adaptive capacity concepts (14% agreement), were the least salient across regions and roles in management. These results suggest that successful climate adaptation will depend on tackling difficult structural challenges, such as developing more flexible regulatory systems and creating mechanisms to address concerns and resistance by stakeholders who expect to incur losses in the process of adaptation.</p>","PeriodicalId":169,"journal":{"name":"Fish and Fisheries","volume":"27 5","pages":"1151-1165"},"PeriodicalIF":6.3,"publicationDate":"2026-08-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/faf.70104","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148288454","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Competitiveness in American Seafood Requires Climate-Resilient Fisheries","authors":"Juan Carlos Villaseñor-Derbez,&nbsp;Amelia Willett Burfoot,&nbsp;Renato Molina","doi":"10.1111/faf.70108","DOIUrl":"10.1111/faf.70108","url":null,"abstract":"<p>Recent federal executive actions prioritize restoring American seafood competitiveness through deregulation and production targets, yet these policies overlook the fundamental threat posed by climate-driven natural hazards. We argue that true seafood competitiveness cannot be achieved through production gains alone because competitiveness also relies on stable production. Disaster resilience is therefore essential to long-term seafood competitiveness as it promotes stability and shortens recovery times. To address this policy gap, we propose a three-pillar framework that encompasses adaptive governance, a politically insulated safety net and quantified climate risk assessments as the foundation for a durable, competitive and resilient American seafood industry. We illustrate our point using fisheries from U.S. Gulf states as an example of a system increasingly exposed to natural hazards, the most prominent of which are hurricanes. This climate vulnerability is not unique to the Gulf nor to hurricanes. Other climate-driven impacts such as marine heatwaves and harmful algal blooms are becoming increasingly prevalent and impose analogous shocks along U.S. waters.</p>","PeriodicalId":169,"journal":{"name":"Fish and Fisheries","volume":"27 5","pages":"1234-1241"},"PeriodicalIF":6.3,"publicationDate":"2026-08-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/faf.70108","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148394092","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Responses of Fish Trophic Guilds to Dams in Neotropical River Systems: A Systematic Meta-Analytic Review","authors":"Thiago Deruza Garcia,&nbsp;Jean Carlo Gonçalves Ortega,&nbsp;Danielle Katharine Petsch,&nbsp;Bárbara Angélio Quirino,&nbsp;Rosa Maria Dias,&nbsp;José Luis Olivan Birindelli,&nbsp;Rosemara Fugi,&nbsp;Ana Paula Vidotto-Magnoni","doi":"10.1111/faf.70110","DOIUrl":"10.1111/faf.70110","url":null,"abstract":"<div>\u0000 \u0000 <p>In Neotropical river systems, dams promote profound physical and biological changes by disrupting longitudinal connectivity, altering flow regimes, and modifying nutrient and energy pathways. These transformations have the potential to reshape the trophic organization of fish assemblages. Here, we conducted a systematic review and multilevel meta-analysis to evaluate the effects of river impoundment on species richness within trophic guilds across upstream (control), reservoir, and downstream (intervention) river stretches. Following the PRISMA guidelines, we screened 2428 records from four scientific databases and grey literature, of which 26 studies met the eligibility criteria for quantitative synthesis. Overall, no consistent differences in trophic guild richness were detected between upstream reference stretches and reservoir or downstream stretches. However, meta-regression analyses showed that latitude explained variation in trophic guild richness within reservoir stretches, whereas reservoir area was the only significant predictor in downstream stretches. Although significant residual heterogeneity remained, these results indicate that trophic responses to river impoundment are strongly context dependent and influenced by environmental conditions operating at different spatial scales. Overall, our findings indicate that river impoundment does not consistently alter trophic guild richness across Neotropical river systems but instead promotes context-dependent ecological responses, providing new insights into the functional organization of fish assemblages and supporting conservation and management strategies for dammed rivers.</p>\u0000 </div>","PeriodicalId":169,"journal":{"name":"Fish and Fisheries","volume":"27 5","pages":"1210-1223"},"PeriodicalIF":6.3,"publicationDate":"2026-08-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148522579","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Impacts of Ocean Acidification on Reproduction and Early Life Development in Marine Teleost Fish—A Synthesis","authors":"Rebecca J. Bridge,&nbsp;Benjamin T. McClelland,&nbsp;Silvana N. R. Birchenough,&nbsp;Martina H. Stiasny","doi":"10.1111/faf.70106","DOIUrl":"10.1111/faf.70106","url":null,"abstract":"<p>Ocean acidification (OA) remains a major and underexplored threat to marine fishes, particularly regarding reproductive physiology and early life stages (ELS). Although research over the past 15 years has documented diverse OA effects, substantial knowledge gaps persist. Most studies focussed on a limited set of species from North America and Europe, leaving broad uncertainty across phylogenetic groups, geographic regions and multi-stressor conditions. In adult fish, especially females, elevated <i>p</i>CO₂ can shift energy allocation to prioritise reproductive output at the expense of egg or clutch size. While adult and juvenile fish have well-developed acid–base balancing systems, embryos and larvae possess only rudimentary mechanisms, making them more vulnerable to OA. This article stresses the importance of understanding these physiological and mechanistic responses to predict the future of fish stocks and ecosystem health as OA intensifies due to ongoing CO₂ emissions. Our results highlight that OA responses in fish are highly variable and often specific to life stage and species, with acute and sometimes stage-specific effects not fully documented. Lastly, our recommendations on targeted research and funding are necessary to address the remaining knowledge gaps, including broadening taxonomic and geographic sampling, exploring multi-stressor scenarios and improving understanding of the downstream effects of OA on fish reproduction and development. Maintaining robust fish populations is vital for food security, employment and ecosystem functioning, making continued investigation into OA's impacts a scientific and societal priority.</p>","PeriodicalId":169,"journal":{"name":"Fish and Fisheries","volume":"27 5","pages":"1176-1192"},"PeriodicalIF":6.3,"publicationDate":"2026-08-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/faf.70106","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148322779","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Anisakis Larvae in Atlantic Wild Fish: Food Safety Hazards Driven by Trendy Diets","authors":"Rafael C. Duarte,&nbsp;Paula Ramos,&nbsp;Maria J. Santos,&nbsp;Rita Barracosa,&nbsp;Mónica Caldeira,&nbsp;Inês Magalhães,&nbsp;Ricardo Calado","doi":"10.1111/faf.70111","DOIUrl":"10.1111/faf.70111","url":null,"abstract":"<div>\u0000 \u0000 <p>Zoonotic parasites are an increasingly recognised challenge for seafood safety. Anisakid nematodes currently represent the most significant fish-borne parasitic threat in Atlantic wild fisheries. Recent regional surveys and global syntheses suggest significant increases in the prevalence and intensity of anisakid infections across multiple commercially important fish species, raising concerns for public health, marketability and consumer confidence. At the same time, the growing popularity of raw and lightly processed seafood has increased human exposure to anisakids, potentially amplifying infection risk independently of ecological changes in parasite abundance. Here, we synthesise current knowledge on anisakid parasitism in Atlantic fish and critically examine the interacting mechanisms that may be driving these trends. We highlight the roles of climate-driven ecosystem change, recovery and redistribution of marine mammal definitive hosts, shifts in fish host ecology, evolving fishing and post-capture handling practices, changing seafood consumption patterns, and major advances in parasite detection and diagnostics. While improved surveillance has undoubtedly increased reporting, converging evidence suggests that changes in host–parasite dynamics are also occurring. We further discuss practical mitigation options across the seafood value chain, from onboard handling and processing to retail, food service and consumer awareness, emphasising the need for coordinated, risk-based approaches. Collectively, these developments challenge the long-standing perception of wild fish, especially when consumed raw or lightly processed, as inherently safe, underscoring the importance of integrating ecological insight, consumer behaviour, technological innovation and public-health guidance to ensure sustainable fisheries and safe seafood consumption.</p>\u0000 </div>","PeriodicalId":169,"journal":{"name":"Fish and Fisheries","volume":"27 5","pages":"1224-1233"},"PeriodicalIF":6.3,"publicationDate":"2026-08-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148582175","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}