Fish and Fisheries最新文献

Hope or Despair Revisited: Assessing Progress and New Challenges in Global Fisheries

IF 6.7 1区农林科学

Fish and Fisheries Pub Date : 2024-12-19 DOI: 10.1111/faf.12877

William W. L. Cheung, Daniel Pauly, U. Rashid Sumaila

{"title":"Hope or Despair Revisited: Assessing Progress and New Challenges in Global Fisheries","authors":"William W. L. Cheung, Daniel Pauly, U. Rashid Sumaila","doi":"10.1111/faf.12877","DOIUrl":"https://doi.org/10.1111/faf.12877","url":null,"abstract":"Marine fisheries are crucial to the economy, livelihood, food security and culture of coastal nations and communities, significantly contributing to the United Nations Sustainable Development Goals. A decade ago, T. J. Pitcher and W. W. L. Cheung highlighted the dichotomy in the perception of fisheries' status, concluding that long‐term sustainability and benefits to people were threatened by overexploitation, climate change, pollution, habitat change and other human stressors. They advocated for a fundamental shift towards ecosystem‐based management, better enforcement of existing regulations and more inclusive and equitable management practices. In this paper, we provide an updated review of the status of global fisheries, reflecting on policy actions, key assessments and research findings over the past decade. While there is a growing recognition of the need for sustainable fisheries management and ocean protection, the overall status of fisheries has not improved. Despite progress in international and national policies addressing direct and indirect drivers such as climate change and harmful practices, these trends have not been reversed. Many challenges identified by Pitcher and Cheung and others persist. Additionally, new and emerging issues such as deep‐sea mining, plastic pollution, unhealthy aquaculture development, increasing social inequity and the rapidly increasing push for the acceleration of the blue economy exacerbate the complexity of achieving fisheries and other ocean management goals. Debating whether there is more hope or despair in global fisheries has become irrelevant. Pathways to ‘bend the curve’ for fisheries are clear, and effective actions are now urgently needed to achieve desirable and sustainable fisheries.","PeriodicalId":169,"journal":{"name":"Fish and Fisheries","volume":"14 1","pages":""},"PeriodicalIF":6.7,"publicationDate":"2024-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142858432","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}

引用次数: 0

Climate Covariate Choice and Uncertainty in Projecting Species Range Shifts: A Case Study in the Eastern Bering Sea 预测物种分布范围变化时的气候变量选择和不确定性：东白令海案例研究

IF 6.7 1区农林科学

Fish and Fisheries Pub Date : 2024-12-16 DOI: 10.1111/faf.12875

Maurice C. Goodman, Jonathan C. P. Reum, Cheryl L. Barnes, Andre E. Punt, James N. Ianelli, Elizabeth A. McHuron, Giulio A. De Leo, Kirstin K. Holsman

{"title":"Climate Covariate Choice and Uncertainty in Projecting Species Range Shifts: A Case Study in the Eastern Bering Sea","authors":"Maurice C. Goodman, Jonathan C. P. Reum, Cheryl L. Barnes, Andre E. Punt, James N. Ianelli, Elizabeth A. McHuron, Giulio A. De Leo, Kirstin K. Holsman","doi":"10.1111/faf.12875","DOIUrl":"https://doi.org/10.1111/faf.12875","url":null,"abstract":"Species distribution models (SDMs) are critical to the adaptive management of fisheries under climate change. While many approaches projecting marine species range shifts have incorporated the effects of temperature on movement, there is a need to incorporate a wider suite of ecologically relevant predictors as temperature‐based SDMs can considerably under‐ or over‐estimate the rate of species responses to climate shocks. As a subarctic ecosystem at the sea ice margin, the Eastern Bering Sea (EBS) is warming faster than much of the global ocean, resulting in the rapid redistribution of key fishery and subsistence resources. To support long‐term planning and adaptation, we combine 40 years of scientific surveys with a high‐resolution oceanographic model to examine the effects of bottom temperature, oxygen, pH and a regional climate index (the extent of the EBS ‘cold pool’) on range projections through the end of the century. We use multimodel inference to partition uncertainty among earth systems models, climate scenarios and distribution model parameterizations for several ecologically and economically important EBS groundfish and crabs. Covariate choice is the primary source of uncertainty for most species, with models that account for spatial responses to the cold pool performing better and suggesting more extensive northward movements than alternative models. Models suggest declines in the probability of occurrence at low pH and oxygen concentrations for most species. We project shifts that are directionally consistent with, yet larger than those previously estimated for most species, suggesting that accounting for large‐scale climate variability in species distribution models may substantially alter range projections.","PeriodicalId":169,"journal":{"name":"Fish and Fisheries","volume":"38 1","pages":""},"PeriodicalIF":6.7,"publicationDate":"2024-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142825473","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}

引用次数: 0

Teleconnection Impacts of Climatic Variability on Tuna and Billfish Fisheries of the South Atlantic and Indian Ocean: A Study Towards Sustainable Fisheries Management

IF 6.7 1区农林科学

Fish and Fisheries Pub Date : 2024-12-12 DOI: 10.1111/faf.12876

Sandipan Mondal, Andre E. Punt, David Mendes, Kennedy Edeye Osuka, Ming‐An Lee

{"title":"Teleconnection Impacts of Climatic Variability on Tuna and Billfish Fisheries of the South Atlantic and Indian Ocean: A Study Towards Sustainable Fisheries Management","authors":"Sandipan Mondal, Andre E. Punt, David Mendes, Kennedy Edeye Osuka, Ming‐An Lee","doi":"10.1111/faf.12876","DOIUrl":"https://doi.org/10.1111/faf.12876","url":null,"abstract":"Climatic variability significantly impacts global fisheries by altering oceanographic conditions, potentially affecting fishing yields and species composition, and studying climate change's effects is crucial for understanding marine ecosystems, predicting disruptions and informing sustainable management strategies. Hence, this study examined the impact of climatic variability on pelagic predators like tunas, marlins and swordfish, using fishery data from 2005, January to 2016, December, focusing on nine commercially significant species each from the Indian and South Atlantic oceans. The hypothesis of the study was composed of two parts, that is, different populations of same species in the Indian and South Atlantic Ocean may respond differently to climatic variability, and the impact of teleconnections on fisheries may vary across these two oceans. The first part of the current study involved evaluating the importance of climatic variability on species using generalised additive modelling, while the second part involved analysing the unique effects of species‐specific climatic variability using cross‐spectral and cross‐wavelet analysis. The current study revealed two significant findings: firstly, species in the Indian Ocean and South Atlantic Ocean had distinct response to climatic variability (first hypothesis), and secondly, the species in the Indian Ocean displayed a higher level of sensitivity to teleconnection impacts (second hypothesis). The study's findings can help fisheries communities to anticipate and adapt to changes in fish distribution and productivity, enhancing their practices and spatial management, thereby promoting sustainable global fisheries management.","PeriodicalId":169,"journal":{"name":"Fish and Fisheries","volume":"21 1","pages":""},"PeriodicalIF":6.7,"publicationDate":"2024-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142815740","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}

引用次数: 0

Opportunity to Leverage Tactics Used by Skilled Fishers to Address Persistent Bycatch Challenges

IF 6.7 1区农林科学

Fish and Fisheries Pub Date : 2024-12-11 DOI: 10.1111/faf.12873

Leslie A. Roberson, Christopher J. Brown, Carissa J. Klein, Edward T. Game, Chris Wilcox

{"title":"Opportunity to Leverage Tactics Used by Skilled Fishers to Address Persistent Bycatch Challenges","authors":"Leslie A. Roberson, Christopher J. Brown, Carissa J. Klein, Edward T. Game, Chris Wilcox","doi":"10.1111/faf.12873","DOIUrl":"https://doi.org/10.1111/faf.12873","url":null,"abstract":"Effective management of shark bycatch is urgently needed to reverse widespread population declines, especially in longline fisheries that are estimated to be responsible for half of global shark catch. Management of shark catch typically focuses on the safe release of landed sharks, with limited attention to reducing the initial catch. Where controls on fishing effort or catch do exist, management frameworks tend to treat fishing fleets as homogeneous units. The underlying assumption is that fishers have similar abilities to catch target species and avoid bycatch. We test this assumption by analysing variability in shark bycatch rates among individual vessels in an industrial tuna longline fleet operating in the Western Pacific. Controlling for factors such as geographic location, time of day and gear depth, we find that individual vessels drive highly variable bycatch rates of blue (Prionace glauca) and silky sharks (Carcharhinus falciformis) – two shark species with the highest global catch volumes. Additionally, we found that the operating company can influence fisher performance. As countries and regional organisations increasingly adopt shark conservation plans and make international conservation commitments, it is crucial to identify viable new strategies that do not unduly burden the industry or penalise good actors. Tailoring management actions to individual fishers and companies – holding high‐bycatch fishers accountable and incentivising low‐bycatch fishers to continuously improve – presents a crucial opportunity to address the overfishing of sharks and other global bycatch challenges.","PeriodicalId":169,"journal":{"name":"Fish and Fisheries","volume":"8 1","pages":""},"PeriodicalIF":6.7,"publicationDate":"2024-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142809877","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}

引用次数: 0

The Benefits of Hierarchical Ecosystem Models: Demonstration Using EcoState, a New State‐Space Mass‐Balance Model

IF 6.7 1区农林科学

Fish and Fisheries Pub Date : 2024-12-09 DOI: 10.1111/faf.12874

James T. Thorson, Kasper Kristensen, Kerim Y. Aydin, Sarah K. Gaichas, David G. Kimmel, Elizabeth A. McHuron, Jens M. Nielsen, Howard Townsend, George A. Whitehouse

{"title":"The Benefits of Hierarchical Ecosystem Models: Demonstration Using EcoState, a New State‐Space Mass‐Balance Model","authors":"James T. Thorson, Kasper Kristensen, Kerim Y. Aydin, Sarah K. Gaichas, David G. Kimmel, Elizabeth A. McHuron, Jens M. Nielsen, Howard Townsend, George A. Whitehouse","doi":"10.1111/faf.12874","DOIUrl":"https://doi.org/10.1111/faf.12874","url":null,"abstract":"Ecosystem models predict changes in productivity and status for multiple species, and are important for incorporating climate‐linked dynamics in ecosystem‐based fisheries management. However, fishery regulations are primarily informed by single‐species stock assessment models, which estimate unexplained variation in dynamics (e.g., recruitment, survival, fishery selectivity, etc) using random effects. We review the general benefits of estimating random effects in ecosystem models: (1) better representing biomass cycles and trends for focal species; (2) conditioning interactions upon observed biomass for predators and prey; (3) easier replication of model results using formal estimation rather than informal model “tuning;” and (4) attributing process errors via comparison amongst different models. We then demonstrate these by introducing a new state‐space model EcoState (and associated R‐package) that extends mass balance dynamics from Ecopath with Ecosim. This model estimates mass balance (Ecopath) and time‐dynamics (Ecosim) parameters directly via their fit to time‐series data (biomass indices and fisheries catches) while also estimating the magnitude of process errors using RTMB. A real‐world application involving Alaska pollock (Gadus chalcogrammus) in the eastern Bering Sea suggests that fluctuations in krill consumption are associated with cycles of increased and decreased pollock production. A self‐test simulation experiment confirms that estimating process errors can improve estimates of productivity (growth and mortality) rates. Overall, we show that state‐space mass‐balance models can be fitted to time‐series data (similar to surplus‐production stock assessment models), and can attribute time‐varying productivity to both bottom‐up and top‐down drivers including the contribution of individual predator and prey interactions.","PeriodicalId":169,"journal":{"name":"Fish and Fisheries","volume":"20 1","pages":""},"PeriodicalIF":6.7,"publicationDate":"2024-12-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142797069","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}

引用次数: 0

Limited Evidence Base for Determining Impacts (Or Not) of Offshore Wind Energy Developments on Commercial Fisheries Species 确定近海风能开发对商业渔业物种影响（或不影响）的证据基础有限

IF 5.6 1区农林科学

Fish and Fisheries Pub Date : 2024-11-26 DOI: 10.1111/faf.12871

Andrew B. Gill, Julie Bremner, Karen Vanstaen, Sylvia Blake, Frances Mynott, Susana Lincoln

{"title":"Limited Evidence Base for Determining Impacts (Or Not) of Offshore Wind Energy Developments on Commercial Fisheries Species","authors":"Andrew B. Gill, Julie Bremner, Karen Vanstaen, Sylvia Blake, Frances Mynott, Susana Lincoln","doi":"10.1111/faf.12871","DOIUrl":"10.1111/faf.12871","url":null,"abstract":"<p>The coexistence between offshore wind and fisheries has raised questions about potential impacts on species that are fished. We systematically evaluated the offshore wind farm (OWF) literature for evidence of effects leading to impacts on commercial fisheries species. First, we collated evidence of environmental effects of OWFs on fisheries species and then determined whether these could be interpreted as impacts using fishery-scale and organism-scale parameters for pelagic finfish, demersal and reef-associated roundfish, demersal flatfish, elasmobranchs and shellfish. We appraised consistency and level of agreement of direct evidence and explored the body of indirect evidence. A total of 1268 documents featured evidence of OWF effects on fisheries species, with only 60 documents (274 species records) providing direct evidence. Evidence on finfish far outweighed that for shellfish. Demersal and reef-associated roundfish were the best-studied group, while elasmobranchs were poorly evidenced. Most studies considered population rather than stock parameters. There was limited evidence of impacts, owing to inconclusive results and inconsistent effects within the parameters assessed—illustrating the importance of looking across the evidence base rather than focussing on individual studies. Hence, there is currently insufficient direct evidence to confidently determine OWF impacts on fisheries species. Overwhelmingly, the evidence deals with indirect effects, although these should not be disregarded as they can highlight plausible impacts on fisheries species, which could guide research and monitoring targeted at understanding the impacts of OWF—a pressing concern given the increased policy commitment of many nations to these two marine sectors sharing marine space.</p>","PeriodicalId":169,"journal":{"name":"Fish and Fisheries","volume":"26 1","pages":"155-170"},"PeriodicalIF":5.6,"publicationDate":"2024-11-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/faf.12871","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142718352","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}

引用次数: 0

Rebuilding and Reference Points Under Compensatory and Depensatory Recruitment: A Meta-Analysis of Northeast Atlantic Fish Stocks 补偿性和消减性增殖下的重建和参考点：东北大西洋鱼类种群的元分析

IF 5.6 1区农林科学

Fish and Fisheries Pub Date : 2024-11-21 DOI: 10.1111/faf.12872

Christoffer Moesgaard Albertsen, Tommi Perälä, Massimiliano Cardinale, Henning Winker, Vanessa Trijoulet

{"title":"Rebuilding and Reference Points Under Compensatory and Depensatory Recruitment: A Meta-Analysis of Northeast Atlantic Fish Stocks","authors":"Christoffer Moesgaard Albertsen, Tommi Perälä, Massimiliano Cardinale, Henning Winker, Vanessa Trijoulet","doi":"10.1111/faf.12872","DOIUrl":"10.1111/faf.12872","url":null,"abstract":"<div>\u0000 \u0000 <p>Modern management of fish stocks is based on integrating the precautionary approach with the maximum sustainable yield framework. It relies on accurate estimation of precautionary limits, defined as levels of spawning biomass where a stock has reduced reproductive capacity, and harvesting targets aimed to maximise future yields. Therefore, it is heavily depending on productivity assumptions. Most fish stocks are managed assuming that productivity will increase as the stock size decreases (i.e., density dependent compensatory stock and recruitment relationship). However, several biological and ecological processes will result in a decreased productivity below a certain population size, referred to as the Allee effect or depensation. Through a meta-analysis of 81 Northeast Atlantic fish stocks, we investigated the impact of assuming compensatory recruitment in the presence of depensation in fisheries management. Across life histories, depensation results in a 22% reduction of the fishing mortality rate leading to extinction. On average, the maximum reproductive rate per spawning biomass was found at 35% of B<sub>MSY</sub>, which was also the biomass where stocks have a 5% risk of extinction without fishing. Finally, the presence of depensation resulted in increased rebuilding times when stock spawning biomass falls below the limit reference point. When depensatory effects are present, assuming increasing productivity at low biomass will generally result in over-optimistic perceptions of rebuilding and stock status at biomass below 25% and 45% of B<sub>MSY</sub> in general, and for pelagic stocks respectively. When not accounted for, depensation will potentially lead to unsustainable harvesting practices of marine living resources.</p>\u0000 </div>","PeriodicalId":169,"journal":{"name":"Fish and Fisheries","volume":"26 1","pages":"171-192"},"PeriodicalIF":5.6,"publicationDate":"2024-11-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142684170","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}

引用次数: 0

A Global Synthesis of Environmental Enrichment Effect on Fish Stress 环境富集对鱼类压力影响的全球综述

IF 5.6 1区农林科学

Fish and Fisheries Pub Date : 2024-11-17 DOI: 10.1111/faf.12870

Zonghang Zhang, Yijie He, Jiujiang Wang, Yating Zheng, Jiezhang Mo, Xiumei Zhang, Wenhua Liu

{"title":"A Global Synthesis of Environmental Enrichment Effect on Fish Stress","authors":"Zonghang Zhang, Yijie He, Jiujiang Wang, Yating Zheng, Jiezhang Mo, Xiumei Zhang, Wenhua Liu","doi":"10.1111/faf.12870","DOIUrl":"10.1111/faf.12870","url":null,"abstract":"<div>\u0000 \u0000 <p>The stress-coping ability (SCA) is one of the core aspects of fish welfare and is of vital importance for fish production in the aquaculture industry and for fish fitness in hatchery release. Environmental enrichment (EE), a method of introducing external stimuli into the husbandry environment, has been recently proposed to improve fish SCA, but the present experimental evidence is mixed, and the reasons for these discrepancies are unclear. Here, we conducted a global meta-analysis using a data set that consists of 1786 cases from 107 studies across 42 fish species to solve this problem. Overall, we found that enriched fish had significantly higher SCA than control fish, reflected in either basal stress levels or stress responses. Meta-regression analyses showed that specific subgroups of enrichment type, fish developmental stage, stress category, stress duration, stress place, sample tissue and indicator system showed significant positive EE effects on SCA. Multi-model inference indicated that the indicator system, fish developmental stage, stress characteristic and enrichment mode are important drivers for the high heterogeneity among effect sizes. These results highlight the importance of introducing EE into the rearing systems, which will not only increase the welfare of aquaculture fish but also improve the ecological adaptability of released fish. The comprehensive knowledge obtained in this analysis will provide insights into fish ontogenetic plasticity and its responses to EE and have important implications for improving the production cycle in fish aquaculture and fisheries conservation.</p>\u0000 </div>","PeriodicalId":169,"journal":{"name":"Fish and Fisheries","volume":"26 1","pages":"131-154"},"PeriodicalIF":5.6,"publicationDate":"2024-11-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142670361","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}

引用次数: 0

Accounting for Salmon Body Size Declines in Fishery Management Can Reduce Conservation Risks 在渔业管理中考虑鲑鱼体型的减小可降低保护风险

IF 5.6 1区农林科学

Fish and Fisheries Pub Date : 2024-11-11 DOI: 10.1111/faf.12869

Jan Ohlberger, Daniel E. Schindler, Benjamin A. Staton

{"title":"Accounting for Salmon Body Size Declines in Fishery Management Can Reduce Conservation Risks","authors":"Jan Ohlberger, Daniel E. Schindler, Benjamin A. Staton","doi":"10.1111/faf.12869","DOIUrl":"10.1111/faf.12869","url":null,"abstract":"<div>\u0000 \u0000 <p>Changes in population demographic structure can have tangible but unknown effects on management effectiveness. Fishery management of Pacific salmon is often informed by estimates of the number of spawners expected to produce maximum sustainable yield (<i>S</i><sub>MSY</sub>), implicitly assuming that reproductive output per spawner does not change over time. However, many salmon populations have experienced long-term trends in age, sex and length compositions that have resulted in smaller body sizes of mature fish. We present an empirically based simulation approach for evaluating management implications of declining reproductive output resulting from shifting demographics. We simulated populations with or without demographic trends, selective or unselective harvests, and harvest policies based on assessment methods that did or did not account explicitly for demographic trends when estimating <i>S</i><sub>MSY</sub>. A management strategy evaluation showed reduced expected harvests and run sizes when populations exhibited negative demographic trends. Reduced abundances and increased conservation risks (higher probability of falling below an abundance threshold) could be partially mitigated by using stock-recruitment analyses based on total egg mass instead of spawner abundance, or via precautionary management where target escapements were higher than <i>S</i><sub>MSY</sub>, especially in fisheries that selectively removed large fish. Explicit accounting of demographic trends in stock-recruit analyses resulted in up to 25% higher run sizes and up to 20% lower conservation risks compared to traditional methods when trends toward smaller, younger and male-biased runs were present in the population. Conservation of population demographic structure may be critical for sustaining productive fish populations and their benefits to ecosystems and people.</p>\u0000 </div>","PeriodicalId":169,"journal":{"name":"Fish and Fisheries","volume":"26 1","pages":"113-130"},"PeriodicalIF":5.6,"publicationDate":"2024-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142597924","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}

引用次数: 0

Mesopelagic Fish Traits: Functions and Trade-Offs 中上层鱼类特征：功能与权衡

IF 5.6 1区农林科学

Fish and Fisheries Pub Date : 2024-11-01 DOI: 10.1111/faf.12867

Henrike Andresen, Leandro Nolé Eduardo, M. Pilar Olivar, P. Daniël van Denderen, Jérôme Spitz, Aurore A. Maureaud, Anik Brind'Amour, Noelle M. Bowlin, Eva García-Seoane, Tom J. Langbehn, Tracey T. Sutton, Heino O. Fock, Anne Gro V. Salvanes, Martin Lindegren

{"title":"Mesopelagic Fish Traits: Functions and Trade-Offs","authors":"Henrike Andresen, Leandro Nolé Eduardo, M. Pilar Olivar, P. Daniël van Denderen, Jérôme Spitz, Aurore A. Maureaud, Anik Brind'Amour, Noelle M. Bowlin, Eva García-Seoane, Tom J. Langbehn, Tracey T. Sutton, Heino O. Fock, Anne Gro V. Salvanes, Martin Lindegren","doi":"10.1111/faf.12867","DOIUrl":"10.1111/faf.12867","url":null,"abstract":"<p>Fishes inhabiting the mesopelagic zone of the world's oceans are estimated to account for the majority of the world's fish biomass. They have recently attracted new attention because they are part of the biological carbon pump and have been reconsidered as a contribution to food security. Hence, there is an urgent need to understand how environmental conditions and species interactions shape their assemblages, and how they contribute to the functioning of marine ecosystems. Trait-based approaches are valuable for addressing these types of questions. However, the biology and ecology of mesopelagic fishes are understudied compared to fishes in shallow and epipelagic waters. Here, we synthesise existing knowledge of traits of mesopelagic fishes and relate them to their role in survival, feeding and growth and reproduction, the key functions that contribute to fitness. Vertical migrations, specialised vision and the use of bioluminescence are among the most striking adaptations to the conditions in the mesopelagic realm. Many traits are interrelated as a result of trade-offs, which may help to understand selection pressures. While morphological traits are straightforward to observe, major knowledge gaps exist for traits that require frequent sampling, assessment under experimental conditions or age determination. The unique adaptations of mesopelagic fishes need to be included in management strategies as well as fundamental research of the habitat.</p>","PeriodicalId":169,"journal":{"name":"Fish and Fisheries","volume":"26 1","pages":"83-103"},"PeriodicalIF":5.6,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/faf.12867","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142563097","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}

引用次数: 0