Fish and Fisheries最新文献

{"title":"Optimal timing of return migration in Atlantic salmon","authors":"Anders Foldvik,&nbsp;Eva Marita Ulvan,&nbsp;Tor Næsje","doi":"10.1111/faf.12816","DOIUrl":"10.1111/faf.12816","url":null,"abstract":"<p>In many populations of Atlantic salmon, individuals return to rivers months or even a year prior to spawning. This premature arrival in fresh water by far exceeds the time needed for upstream migrations to spawning areas. Leaving the ocean early means forgoing substantial growth and incurring high metabolic costs of fasting in freshwater. Differences in timing of return migration has been shown to have a genetic basis, and different sea age classes return to rivers at different times. Previously suggested explanations regarding the cause for this behaviour have included both environmental factors and life history trade-offs, but these hypotheses have not been tested. Here, we combine data on marine growth and mortality of Atlantic salmon with the calculations of energetic expenditures of fasting in freshwater to explore how timing of river entry affects the probability of survival and energy recourses available for spawning. Our results show that to maximize the product of survival until spawning and energy available at spawning, multi sea winter fish in general must enter rivers earlier than one sea winter fish. And that for a large range of sea survival rates, the optimum river entry date for multi sea winter fish is as early as possible. This strongly suggests that the phenomena of premature arrival in Atlantic salmon is adaptive behaviour.</p>","PeriodicalId":169,"journal":{"name":"Fish and Fisheries","volume":"25 3","pages":"429-440"},"PeriodicalIF":6.7,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/faf.12816","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139660812","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":"The future of gender research in small-scale fisheries: Priorities and pathways for advancing gender equity","authors":"Emma D. Rice,&nbsp;Edith Gondwe,&nbsp;Abigail E. Bennett,&nbsp;Patrick Asango Okanga,&nbsp;Nimah F. Osho-Abdulgafar,&nbsp;Kafayat Fakoya,&nbsp;Ayodele Oloko,&nbsp;Sarah Harper,&nbsp;Patrick Chimseu Kawaye,&nbsp;Ernest O. Chuku,&nbsp;Hillary Smith","doi":"10.1111/faf.12814","DOIUrl":"10.1111/faf.12814","url":null,"abstract":"<p>This paper presents an agenda for the future of gender research in small-scale fisheries (SSF). Building on expert insight from scholars who gathered during the 4th World Small-Scale Fisheries Congress Africa (4WSFC) with a synthesis of existing literature, we identify six topics that warrant future investigation in SSF, along with methodological considerations for addressing them. Research priorities include identifying pathways towards (1) equitable participation in governance and decision-making, (2) valuing all actors' contributions to aquatic food systems, (3) increasing access to financial services, (4) inclusive infrastructural development, (5) livelihood diversification and (6) reducing occupational health hazards. Several important methodological considerations include (i) using multiple methodologies, (ii) applying participatory methods, (iii) collecting gender-disaggregated data, (iv) integrating gender into a food systems approach in fisheries, (v) engaging an intersectional approach and (vi) operationalising equity.</p>","PeriodicalId":169,"journal":{"name":"Fish and Fisheries","volume":"25 3","pages":"401-408"},"PeriodicalIF":6.7,"publicationDate":"2024-01-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/faf.12814","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139489932","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":"Metabolism, population growth, and the fast-slow life history continuum of marine fishes","authors":"Sarah Gravel,&nbsp;Jennifer S. Bigman,&nbsp;Sebastián A. Pardo,&nbsp;Serena Wong,&nbsp;Nicholas K. Dulvy","doi":"10.1111/faf.12811","DOIUrl":"10.1111/faf.12811","url":null,"abstract":"<p>The maximum intrinsic rate of population increase (<i>r</i>_max) represents a population's maximum capacity to replace itself and is central to fisheries management and conservation. Species with lower <i>r</i>_max typically have slower life histories compared to species with faster life histories and higher <i>r</i>_max. Here, we posit that metabolic rate is related to the fast–slow life history continuum and the connection may be stronger for maximum metabolic rate and aerobic scope compared to resting metabolic rate. Specifically, we ask whether variation in <i>r</i>_max or any of its component life-history traits – age-at-maturity, maximum age, and annual reproductive output – explain variation in resting and maximum metabolic rates and aerobic scope across 84 shark and teleost species, while accounting for the effects of measurement temperature, measurement body mass, ecological lifestyle, and evolutionary history. Overall, we find a strong connection between metabolic rate and the fast-slow life history continuum, such that species with faster population growth (higher <i>r</i>_max) generally have higher maximum metabolic rates and broader aerobic scopes. Specifically, <i>r</i>_max is more important in explaining variation in maximum metabolic rate and aerobic scope compared to resting metabolic rate, which is best explained by age-at-maturity (out of the life history traits examined). In conclusion, teleosts and sharks share a common fast–slow physiology/life history continuum, with teleosts generally at the faster end and sharks at the slower end, yet with considerable overlap. Our work improves our understanding of the diversity of fish life histories and may ultimately improve our understanding of intrinsic sensitivity to overfishing.</p>","PeriodicalId":169,"journal":{"name":"Fish and Fisheries","volume":"25 2","pages":"349-361"},"PeriodicalIF":6.7,"publicationDate":"2024-01-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/faf.12811","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139420474","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":"Preference, avoidance, motivation and their importance to fish welfare","authors":"Caroline Marques Maia,&nbsp;João Luis Saraiva,&nbsp;Eliane Gonçalves-de-Freitas","doi":"10.1111/faf.12812","DOIUrl":"10.1111/faf.12812","url":null,"abstract":"<p>Several studies have reported the neurophysiological and behavioural mechanisms that enable fish to experience several types of affective states, such as fear, pain and joy. This is crucial for the welfare feelings-based approach, as conditions that bring positive or negative valence to fish influence their affective state. A method to understand to what extent fish ‘like’ or ‘dislike’ their surrounding features is by evaluating their consistent choices (preferences) and propensity to reach environmental resources or traits (motivation). In this review, we propose how to assess preference and motivation tests in fish and discuss the limitations and potential biases that may affect such tests. Furthermore, we emphasize that understanding the avoidance responses of fish under a welfare context is a complementary method to improve the quality of life of fish in any type of rearing environment. Although there are other reviews about animal preference and motivation, this is the first one exclusively dedicated to the application of fish welfare.</p>","PeriodicalId":169,"journal":{"name":"Fish and Fisheries","volume":"25 2","pages":"362-379"},"PeriodicalIF":6.7,"publicationDate":"2023-12-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139060395","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":"Global synthesis of effects and feedbacks from artificial reefs on socioecological systems in recreational fisheries","authors":"Lisa Chong,&nbsp;Zachary A. Siders,&nbsp;Kai Lorenzen,&nbsp;Robert N. M. Ahrens,&nbsp;Edward V. Camp","doi":"10.1111/faf.12809","DOIUrl":"10.1111/faf.12809","url":null,"abstract":"<p>Artificial reefs have been widely deployed with the intention of increasing fish habitat, enhancing recreational fishery opportunities and providing socio-economic benefits to surrounding communities. Substantial work has been done to understand the ecology of artificial reefs but the efficacy of artificial reefs as a management tool hinges on socioecological feedbacks that are not well understood. Socioecological feedbacks are difficult to discern because they depend on multiple and complex interactions between fish, fishers, managers and habitats. To better understand the net effects of artificial reefs on recreational fisheries, we conducted a literature review to catalogue effects and feedbacks of artificial reefs. Our global synthesis revealed that artificial reefs may result in a net negative effect on fish populations, at least in the short-term, as catch-driven effects bolstering socio-economic objectives occur more often or at greater intensities than positive biological effects. We have highlighted important effects of artificial reefs and feedbacks that need to be accounted for when considering their deployment in fishery management. There may be unintended consequences if biological benefits from habitat-to-fish and fish-to-fish feedbacks are outweighed by population losses due to greater socio-economic benefits from fish-to-fisher feedbacks. Taken in concert with their semi-permanent nature and apparent popularity with stakeholders, a view emerges of artificial reefs possibly functioning as a ‘social-ecological trap’. This work emphasizes the need for robust assessments of the effects of artificial reefs, as well as more formal decision science approaches for implementing of these structures.</p>","PeriodicalId":169,"journal":{"name":"Fish and Fisheries","volume":"25 2","pages":"303-319"},"PeriodicalIF":6.7,"publicationDate":"2023-12-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/faf.12809","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138840864","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":"Recruitment regime shifts and nonstationarity are widespread phenomena in harvestable stocks experiencing pronounced climate fluctuations","authors":"Shuyang Ma,&nbsp;Geir Huse,&nbsp;Kotaro Ono,&nbsp;Richard D. M. Nash,&nbsp;Anne Britt Sandø,&nbsp;Kjell Nedreaas,&nbsp;Solfrid Sætre Hjøllo,&nbsp;Svein Sundby,&nbsp;Tom Clegg,&nbsp;Jon Helge Vølstad,&nbsp;Olav Sigurd Kjesbu","doi":"10.1111/faf.12810","DOIUrl":"10.1111/faf.12810","url":null,"abstract":"<p>Methods to reliably identify jump discontinuities in biological time series and to assess the specific contribution of various covariates are rapidly progressing. Here, we took advantage of these statistical improvements as well as those seen in complementary, down-scaled climate and biogeochemical models to investigate causes of the substantial interannual variability observed in recruitment strength in hindcast analyses. This systematic meta-analysis included 23 data-rich, commercially valuable, warm- and cold-temperate stocks in the North, Norwegian and Barents Seas. Since this study focuses on recruitment strength variability, we have used the term “recruitment regime shift” to distinguish from the concept of ecosystem regime shift. The breakpoint analysis revealed that the former criterion applied to more than half of the time series, mainly with respect to North Sea stocks but also to those in the Norwegian Sea. The exploratory analysis using vcGAM indicated that 1–3 shifts per stock were real, when using five drivers spanning spawning stock biomass to large-scale climatic processes. Thus, non-stationary relationships were extensively prevalent, indicating that each stock is uniquely adapted to its locally varying conditions. Outputs from the stationary GAM resembled those from the vcGAM but not after the threshold year. In-depth case studies showed that the proxy of a given driver for the process which was to be included should be critically considered in a spatiotemporal context. Furthermore, the stock-specific uncertainty associated with the given recruitment figures as such should also be an in-built component of the model construct and thereby in the evaluation of the output.</p>","PeriodicalId":169,"journal":{"name":"Fish and Fisheries","volume":"25 2","pages":"320-348"},"PeriodicalIF":6.7,"publicationDate":"2023-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/faf.12810","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138840162","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":"Thermal tolerance in Pacific salmon: A systematic review of species, populations, life stages and methodologies","authors":"Noa B. Mayer,&nbsp;Scott G. Hinch,&nbsp;Erika J. Eliason","doi":"10.1111/faf.12808","DOIUrl":"10.1111/faf.12808","url":null,"abstract":"<p>Aquatic systems are warming and exceeding upper thermal limits (UTLs) for many fish species, yet understanding how they inform resilience to climate change is challenging. Using Pacific salmon (<i>Oncorhynchus</i> spp.) as a model, we conducted a systematic review involving 168 papers investigating UTL in five species. We found considerable variation in UTL among species, within species and across life stages; largely attributed to methodological approaches (e.g. CT_max/UILT, Aerobic/Cardiac Scope, Thermal Migration Barriers, Rearing Mortality, Thermal Preference/Avoidance). Given that each method has strengths and weaknesses owing to logistics, time scale and ecological realism, we offer a new framework for assessing vulnerability to warming that stresses the importance of considering UTL metrics in the context of intended use (i.e. the development of management guidelines, projections of future persistence and survival) and what aspect (physiological or behavioural) of thermal response a metric investigates. Comparing studies with identical UTL approaches revealed that within species, UTL was higher for populations historically encountering higher temperatures—suggesting local thermal adaptation. Within populations, UTL differed across the lifecycle, being highest in fry and lowest in embryo and migrating adults, but this was not universal. For spawning Pacific salmon, UTL has not been assessed and few studies have examined estuarine and marine stages. Ultimately, this data gap limits the life-history thermal perspectives that can be drawn and may indicate a broader gap for all fishes, given that Pacific salmon are among the most well-studied species. Our framework illustrates the inherent and methodological inconsistencies in UTL and offers a guide for how thermal limits can best be used to assess the warming tolerance and vulnerability of fishes.</p>","PeriodicalId":169,"journal":{"name":"Fish and Fisheries","volume":"25 2","pages":"283-302"},"PeriodicalIF":6.7,"publicationDate":"2023-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/faf.12808","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138740079","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":"Drivers of success, speed and performance in fisheries moving towards Marine Stewardship Council certification","authors":"Jennifer Rasal,&nbsp;Michael C. Melnychuk,&nbsp;Amanda Lejbowicz,&nbsp;Carlos Montero-Castaño,&nbsp;Sophie Ferber,&nbsp;Catherine Longo","doi":"10.1111/faf.12805","DOIUrl":"10.1111/faf.12805","url":null,"abstract":"<p>With growing concerns about global overfishing, market-based eco-certification programs like the Marine Stewardship Council (MSC) can incentivise adoption of sustainable practices. Several studies investigated drivers of improvement in market-driven Fisheries Improvement Projects, but failed to use detailed, standardised measures of progress, or considered small samples. We considered the relative influence market, governance and fishery-specific drivers have on MSC certification speed and success in 208 fisheries. To evaluate improvement we compared pre-certification scores from MSC pre-assessments—rapid high-level audits against the MSC Standard—to scores from full MSC audits. Drivers considered included measures of pre-assessment quality, as this initial advice might contribute to later certification success. National fishery management capacity, percentage of MSC catch and landed value were the strongest drivers of successful and rapid certification. Environmental improvements occurred for stock management, ecosystem health and governance aspects. While only 48% of fisheries with favourable pre-assessment outcomes went on to be certified, improvements in many fisheries with lower pre-assessment scores were observed in their lead-up to full assessment. Random forest analyses allowed for considering multiple interacting variables simultaneously and revealed influential drivers under specific fishery contexts. For example, higher certification probability was associated with greater percentage of MSC catch under the full dataset, but not under subsets representing fisheries facing more challenging contexts for certification. Fisheries from lower/middle-income countries had lower overall probability of certification, but this increased with higher management capacity. This suggests multiple drivers interact in instigating fisheries improvements, and MSC pre-assessments provide valuable resources to understand this journey.</p>","PeriodicalId":169,"journal":{"name":"Fish and Fisheries","volume":"25 2","pages":"235-250"},"PeriodicalIF":6.7,"publicationDate":"2023-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/faf.12805","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138565635","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":"Trait-based analyses reveal global patterns in diverse diets of albacore tuna (Thunnus alalunga)","authors":"Natasha A. Hardy,&nbsp;Cindy Matuch,&nbsp;Zachary Roote,&nbsp;Iris George,&nbsp;Barbara A. Muhling,&nbsp;Michael G. Jacox,&nbsp;Elliott L. Hazen,&nbsp;Steven J. Bograd,&nbsp;Larry B. Crowder,&nbsp;Stephanie J. Green","doi":"10.1111/faf.12807","DOIUrl":"10.1111/faf.12807","url":null,"abstract":"<p>Simplifying complex species interactions can facilitate tracking and predicting functional responses to ecological stressors. This is important for highly migratory pelagic predators, exploiting diverse prey fields as they respond to dynamic environments. We reconstructed the historical resource use of albacore tuna (<i>Thunnus alalunga</i>) globally from the 1900s to 2015 and confirmed highly biodiverse diets with 308 prey species, and an additional 238 taxa at coarser taxonomic resolution. We synthesised prey diversity into seven functional trait guilds using hierarchical divisive clustering algorithms as a function of four traits that describe habitat use and influence predator–prey encounter rates – prey habitat association vertically in the water column, horizontally along the coastal to pelagic gradient, seasonal and diel vertical migratory behaviour. We explored variability in historical composition of albacore diets across geographies based on species identity, individual trait information and functional trait guilds using a multi-matrix modelling framework. Taxonomic information remains important for trophic ecology, however, species-based diet composition in albacore tuna was highly variable across geographies and years sampled, making interpretation of these patterns difficult. By simplifying species identity into habitat-based traits, we highlight changes in prey resources consumed, such as the historical importance of near-surface epipelagic prey resources from coastal to oceanic habitats, and seasonally migrating continental shelf prey, with less frequent pulses of deeper water and demersal taxa. Trait information and trait guilds serve as useful classification frameworks for identifying functionally redundant food web linkages across biodiverse prey, and will prove useful in tracking predators' foraging responses to changing resource availability.</p>","PeriodicalId":169,"journal":{"name":"Fish and Fisheries","volume":"25 2","pages":"268-282"},"PeriodicalIF":6.7,"publicationDate":"2023-12-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/faf.12807","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138545001","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":"Quota use in mixed-stock fisheries","authors":"William A. Karp,&nbsp;Michael C. Melnychuk,&nbsp;Robyn E. Forrest,&nbsp;Lorne Richard Little,&nbsp;Kristin McQuaw,&nbsp;Chad Demarest,&nbsp;Ray Hilborn,&nbsp;Nicole Baker,&nbsp;Brian Mose,&nbsp;Bruce Turris,&nbsp;Ernesto Penas Lado","doi":"10.1111/faf.12806","DOIUrl":"10.1111/faf.12806","url":null,"abstract":"<p>Although most fisheries assessment and management focuses on the status of individual stocks, and regulations are commonly established as single-species total allowable catch limits (TACs), much of the catch from global fisheries comes from mixed-stock fisheries where species cannot be harvested separately. We show that in some fisheries where TAC and catch of demersal fish stocks are tracked, the average fraction of TAC harvested ranges from 21% to 68% overall and is declining. This is, in part, related to efforts to protect all species from overfishing, leading to ‘choke species’, which limit fishing pressure on other target species. While some choke species arise from a mix of low and high-productivity species, others result from allocation processes, which can be aggravated by shifting distributions due to climate change. Underutilization of TACs can also result from market limitations, low value of individual species, undercapacity or management measures. Proposed methods for increasing long-term yield require species to be managed in stock groups, or allowing the abundance of some stocks to fall below target reference points. We suggest that the observed low and declining aggregate harvests are due, primarily, to the focus on single-stock sustainability measures, rather than performance of the fisheries in relation to potential overall yield. While there is a growing consensus that single-species management should be replaced by an ecosystem-based approach, this will require clear legislative directives regarding management of the trade-offs involved. Time series considered in this analysis do not extend beyond 2019.</p>","PeriodicalId":169,"journal":{"name":"Fish and Fisheries","volume":"25 2","pages":"251-267"},"PeriodicalIF":6.7,"publicationDate":"2023-11-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138456054","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}