Fish and Fisheries最新文献_第2页

The Benefits of Hierarchical Ecosystem Models: Demonstration Using EcoState, a New State‐Space Mass‐Balance Model 分层生态系统模型的好处：使用新的状态-空间质量-平衡模型EcoState进行演示

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

Closing the Gaps in Fish Welfare: The Case for More Fundamental Work Into Physical Enrichment 缩小鱼类福利方面的差距：开展更多基础性工作，丰富鱼类的体能

IF 5.6 1区农林科学

Fish and Fisheries Pub Date : 2024-10-29 DOI: 10.1111/faf.12868

Helen C. Spence-Jones, Joachim G. Frommen, Nick A. R. Jones

{"title":"Closing the Gaps in Fish Welfare: The Case for More Fundamental Work Into Physical Enrichment","authors":"Helen C. Spence-Jones, Joachim G. Frommen, Nick A. R. Jones","doi":"10.1111/faf.12868","DOIUrl":"10.1111/faf.12868","url":null,"abstract":"<p>Billions of fishes are kept in captivity for research and food production world-wide, with a strong impetus for maintaining high welfare standards. Accordingly, the importance of empirical research into the welfare and husbandry of captive fishes is increasingly acknowledged in both science and aquaculture, alongside growing public and governmental interest. Physical enrichment can have an important influence on welfare in of captive fishes, but many questions remain. Here, we summarise the current state of research and outline knowledge gaps in the area of physical enrichment, which is a fundamental aspect to improving welfare of captive fishes. To explore the level of research interest this area across time we conducted a series of surveys, using the number of papers published per year as a metric. These surveys highlight that work on fish welfare, while representing a relatively low proportion of fish research overall, is increasing rapidly. For species that are of aquaculture importance or used commonly as laboratory subjects, we show a positive relationship between general research interest and number of welfare-related papers. However, for many, particularly relatively less studied, species the proportion of papers on enrichment remains low, with a slower increase compared to welfare-related papers in general. In terms of common metrics used to quantify fish welfare, there is a reliance on growth and behaviour, with scope for inclusion and combination of a more comprehensive range of reproducible measures. We finish by highlighting recent progress, promising areas for future research and suggestions for advances in this area.</p>","PeriodicalId":169,"journal":{"name":"Fish and Fisheries","volume":"26 1","pages":"104-112"},"PeriodicalIF":5.6,"publicationDate":"2024-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/faf.12868","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142541276","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

Widespread Evidence for Rapid Recent Changes in Global Range and Abundance of Threespine Stickleback (Gasterosteus aculeatus) 有广泛证据表明三刺粘背鱼（Gasterosteus aculeatus）的全球分布范围和数量近期发生了快速变化

IF 5.6 1区农林科学

Fish and Fisheries Pub Date : 2024-10-18 DOI: 10.1111/faf.12866

Aleksander A. Makhrov, Easton Y. K. Houle, Andrew P. Hendry, Alison M. Derry, Dmitry L. Lajus

{"title":"Widespread Evidence for Rapid Recent Changes in Global Range and Abundance of Threespine Stickleback (Gasterosteus aculeatus)","authors":"Aleksander A. Makhrov, Easton Y. K. Houle, Andrew P. Hendry, Alison M. Derry, Dmitry L. Lajus","doi":"10.1111/faf.12866","DOIUrl":"10.1111/faf.12866","url":null,"abstract":"<div>\u0000 \u0000 <p>The threespine stickleback, <i>Gasterosteus aculeatus</i>, has undergone dramatic increases in abundance in parts of its historical native range, and it is also undergoing a major range expansion. We review available information and discuss the vectors and sources of the species' range expansions, the genetic characteristics of recently founded populations and the ecological consequences of both stickleback introductions and increases in abundance. Dramatic range expansions occurred in the Caspian Sea drainage, large rivers in the Black Sea drainage, reservoirs of the Rhine basin, isolated lakes in North America and Japan and remote islands in the Arctic. Likely reasons for these range expansions include canal construction, accidental inclusion with stocking of commercially valuable fish, intentional release by aquarists and fishermen and climate change. In some cases, range expansions of stickleback were likely facilitated by genetic admixture of previously separated lineages, as well as by high-standing genetic variation that promotes rapid adaptation to new habitats. Accordingly, range expansions are often accompanied by striking increases in abundance, although these are two distinct processes. Notably, population growth within the species' native range, particularly in the White and Baltic Seas, has been observed alongside expansions into new areas. Where stickleback colonise new habitats or increase in abundance, extensive ecological impacts on ecosystems typically occur. Given these massive and widespread changes, the species has the potential to provide considerable insight into the evolutionary and ecological effects of human impacts on aquatic ecosystems.</p>\u0000 </div>","PeriodicalId":169,"journal":{"name":"Fish and Fisheries","volume":"26 1","pages":"65-82"},"PeriodicalIF":5.6,"publicationDate":"2024-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142449807","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 Meta-Analysis of Bycatch Mitigation Methods for Sea Turtles Vulnerable to Swordfish and Tuna Longline Fisheries 针对易受箭鱼和金枪鱼延绳钓渔业影响的海龟的兼捕渔获物减缓方法的元分析

IF 5.6 1区农林科学

Fish and Fisheries Pub Date : 2024-10-10 DOI: 10.1111/faf.12865

Hao Yan, Cheng Zhou, Eric Gilman, Jie Cao, Rong Wan, Fan Zhang, Jiangfeng Zhu, Liuxiong Xu, Liming Song, Xiaojie Dai, Siquan Tian

{"title":"A Meta-Analysis of Bycatch Mitigation Methods for Sea Turtles Vulnerable to Swordfish and Tuna Longline Fisheries","authors":"Hao Yan, Cheng Zhou, Eric Gilman, Jie Cao, Rong Wan, Fan Zhang, Jiangfeng Zhu, Liuxiong Xu, Liming Song, Xiaojie Dai, Siquan Tian","doi":"10.1111/faf.12865","DOIUrl":"10.1111/faf.12865","url":null,"abstract":"<div>\u0000 \u0000 <p>Fisheries bycatch poses one of the most significant threats to sea turtles. Although various methodologies have been developed to mitigate sea turtle bycatch in swordfish and tuna longline fisheries, the effectiveness and interactions remain uncertain. In this study, we conducted a comprehensive meta-analysis, encompassing 41 studies focused on sea turtles and 36 studies on tunas, swordfish and sharks, all derived from well-controlled experimental research in swordfish and tuna longline fisheries. The objective was to systematically evaluate the relative effectiveness of species-specific mitigation strategies for sea turtles, particularly examining the impact of circle hooks and fish bait as alternatives to conventional longline fishing practices. While a nuanced hierarchy, characterised by species-specific patterns, was observed among the mitigation measures, circle hooks demonstrated great promise in reducing bycatch of loggerhead, olive ridley and leatherback turtles, with minimal impact on the catch rates of tuna, swordfish and sharks. We highlighted the broader applicability of fish bait in minimising sea turtle bycatch, noting that the effectiveness of bait may overlap with that of hooks, potentially making the additional benefits of the hooks less evident. The study also revealed regional variations in the effectiveness of these methods, emphasising the need for more detailed data collection. Given current data limitations that restrict extensive meta-analyses, a series of small-sample studies with promising innovations, exemplified by circle hooks with a wire appendage and blue-white lights, necessitates in-depth investigation and field tests.</p>\u0000 </div>","PeriodicalId":169,"journal":{"name":"Fish and Fisheries","volume":"26 1","pages":"45-64"},"PeriodicalIF":5.6,"publicationDate":"2024-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142405145","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

Hormonal regulation of the phenotype into environmentally appropriate pace-of-life syndromes 激素调节表型，形成与环境相适应的生活节奏综合征

IF 5.6 1区农林科学

Fish and Fisheries Pub Date : 2024-10-02 DOI: 10.1111/faf.12863

Jacqueline Weidner, Camilla Håkonsrud Jensen, Jarl Giske, Sigrunn Eliassen, Christian Jørgensen

{"title":"Hormonal regulation of the phenotype into environmentally appropriate pace-of-life syndromes","authors":"Jacqueline Weidner, Camilla Håkonsrud Jensen, Jarl Giske, Sigrunn Eliassen, Christian Jørgensen","doi":"10.1111/faf.12863","DOIUrl":"10.1111/faf.12863","url":null,"abstract":"<p>The risk of predation is an important driver that tailors life histories in various ways. Using an evolutionary model based on hormonal control, we study how different predation regimes affect adaptive risk-taking and growth in fish populations. Growth, metabolism and foraging in the modelled fish are regulated by three simplified hormone functions: growth hormone, orexin, and thyroid hormone. A dynamic state-dependent optimization model finds optimal hormone profiles for adaptive growth strategies in juvenile fish. We consider a gradient from species where behaviour and metabolic activity have large consequences for risk (typically benthic and camouflaged species), to the opposite endpoint where behaviour may modify predation risk to a smaller degree (as in the pelagic). Along this gradient, the model predicts changes in the pace of life from slow to fast, enacted by up-regulation of the three hormone functions which in turn increase foraging and metabolism and change the priorities of energy reserves versus growth. Under all types of predation risk investigated, growth is faster when food availability is higher. Energy reserves are maintained primarily during periods of poor food availability and are used to accelerate growth during periods when food availability is high. The thyroid hormone function is up-regulated predominantly when food availability is high and has an important role in trade-offs balancing energetic gain and survival. At the individual time scale, the hormone system improves organismic flexibility and robustness. Over the phylogenetic time scale, hormone system adaptations have also restricted the phenotypic plasticity of individuals.</p>","PeriodicalId":169,"journal":{"name":"Fish and Fisheries","volume":"26 1","pages":"16-29"},"PeriodicalIF":5.6,"publicationDate":"2024-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/faf.12863","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142368845","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