Fisheries Research最新文献

{"title":"Site-specific post-release predation of bonefish (Albula glossodonta) in a catch-and-release recreational fishery: informing voluntary actions and management strategies for a Blue Economy","authors":"Lucas P. Griffin ,&nbsp;Gail Fordham ,&nbsp;George Curd ,&nbsp;Sascha Clark Danylchuk ,&nbsp;Christopher Narty ,&nbsp;Eleanor Brighton ,&nbsp;Steven J. Cooke ,&nbsp;Andy J. Danylchuk","doi":"10.1016/j.fishres.2025.107387","DOIUrl":"10.1016/j.fishres.2025.107387","url":null,"abstract":"<div><div>Bonefish (<em>Albula</em> spp.) support recreational catch-and-release (C&amp;R) fisheries in tropical and subtropical regions, contributing to conservation efforts and advancing Blue Economy initiatives. However, post-release predation (PRP) poses challenges to the sustainability of these fisheries, particularly in predator-dense environments. This study assessed physical injury, reflex impairment, and PRP for bonefish (<em>Albula glossodonta</em>) in the Alphonse Group of islands, Republic of Seychelles, a well-established sport fishing destination. There was a significant effect of air exposure on reflex impairment, with fish exposed to air for 30 seconds being more impaired than those exposed to 0 or 10 seconds. However, air exposure, among other angling event characteristics, did not affect PRP (overall PRP = 13 %). Notably, PRP was highly site-specific, with 75 % of predation events occurring at a single location where bonefish were 15 times more likely to be predated compared to other sites. Cryptic predation was prevalent, as only 17 % of predation events were preceded by observing potential predators. Sicklefin lemon sharks (<em>Negaprion acutidens</em>) were responsible for most PRP, often tracking and preying on bonefish within an average of 9 minutes after release (30–1080 seconds; 545 ± 315 seconds). To reduce PRP risk, these findings highlight the need for regular PRP assessments, adaptive management, and site-specific strategies that include voluntary actions of anglers and guides to avoid locations where PRP is prevalent. Incorporating evidence-informed practices into conservation and management plans can promote sustainable recreational fisheries while supporting conservation and economic growth in a Blue Economy.</div></div>","PeriodicalId":50443,"journal":{"name":"Fisheries Research","volume":"286 ","pages":"Article 107387"},"PeriodicalIF":2.2,"publicationDate":"2025-05-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143907821","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Fisherwomen’s activities are as complex, salient, and profitable as those performed by fishermen: A study from vulnerable traditional fishery communities","authors":"José Amorim Reis-Filho ,&nbsp;Leticia Maria Cavole ,&nbsp;Vitor Renck ,&nbsp;Linda Eggertsen ,&nbsp;Miguel Loiola ,&nbsp;Mariana Bender ,&nbsp;Maisha Gragnolati ,&nbsp;Tommaso Giarrizzo ,&nbsp;Charbel N. El-Hani","doi":"10.1016/j.fishres.2025.107380","DOIUrl":"10.1016/j.fishres.2025.107380","url":null,"abstract":"<div><div>Examining gender dynamics in small-scale fisheries (SSF) is crucial for understanding the contributions of both women and men and identifying potential inequalities. Although women are a fundamental part of the seafood supply chain in SSF, especially in traditional communities, management remains gender biased. This is partly due to a lack of understanding of gender mainstreaming. To address this, we conducted a participatory fishery monitoring initiative along the Brazilian central coast, focusing specifically on engaging local and traditional communities. Our aims were to analyze the catch volume, labor distribution, target resources, profitability differences between fisherwomen and fishermen, and to examine the intricate intra-community relationships that may influence labor dynamics in these communities. The study revealed fundamental differences in women and men’s fishing activities and profitability. Fisherwomen primarily targeted a set of high-priced resources (e.g., shelled mollusk) that are different from those harvested by fishermen (e.g., fin fish), while also having lower operational costs, given their focus on gleaning. Women also contribute to men’s labor by engaging in the processing of their captures. These factors collectively increased the overall profitability of fisherwomen compared to fishermen. Furthermore, while fishermen depend on fisherwomen’s post-processing services, the activities of fisherwomen are more independent, as revealed by Exponential-family Random Graph Models. The communities-specific profitability assessment developed in this study can be readily adapted for use in other fishing communities where both women and men contribute to catches. Our approach offers valuable insights into gender sensitivities and adaptability within SSFs, serving as a tool for policy making and improving the fishery value chain.</div></div>","PeriodicalId":50443,"journal":{"name":"Fisheries Research","volume":"286 ","pages":"Article 107380"},"PeriodicalIF":2.2,"publicationDate":"2025-05-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143899370","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Reproductive characteristics and spawning potential ratio modeling of a vulnerable riverine specialist in the lower unchannelized Missouri river, USA","authors":"Lindsey A.P. LaBrie ,&nbsp;Tanner L. Carlson ,&nbsp;Jeff S. Wesner ,&nbsp;Chelsey A. Pasbrig ,&nbsp;Steven R. Chipps ,&nbsp;Benjamin J. Schall","doi":"10.1016/j.fishres.2025.107386","DOIUrl":"10.1016/j.fishres.2025.107386","url":null,"abstract":"<div><div>Reproductive characteristics for populations of imperiled, non-game species are not regularly studied but may be important for identifying factors associated with their population sustainability. Understanding reproductive traits of vulnerable species, particularly long-lived species, may provide insight for implementing management actions to respond to potential overharvest. This study aimed to assess the reproductive characteristics of a stable population of long-lived blue suckers (<em>Cycleptus elongatus</em>) in the unchannelized Missouri River in South Dakota. We obtained demographic information and gonads from 182 blue suckers collected in trammel nets in March 2021 and 2022. We used Bayesian generalized linear mixed-effects models to assess length and weight relationships with gonadosomatic index (GSI) and fecundity and used spawning potential ratios to model the influence of four minimum length limit scenarios. Total lengths of sampled fish ranged from 560 to 821 mm. Female GSI increased with length to ∼730 mm before declining, and male GSI remained consistent across lengths. Fecundity increased linearly with weight and with length to around 750 mm, after which the rate of increase slowed. Using a recent natural mortality estimate for this population, the spawning potential ratio under current no-limit regulations decreased rapidly as fishing mortality approached 0.10 but implementing a minimum length limit (e.g. 610- or 660 mm) could prevent the spawning potential ratio from falling below acceptable limits (0.2–0.3) at moderate-to-high fishing mortality values. This study provides necessary information about the reproductive characteristics of vulnerable, non-game species and demonstrates how spawning potential ratio modeling can be used for species that receive less management focus.</div></div>","PeriodicalId":50443,"journal":{"name":"Fisheries Research","volume":"286 ","pages":"Article 107386"},"PeriodicalIF":2.2,"publicationDate":"2025-05-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143899371","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Corrigendum to “Associations between body condition and seasonal freshwater outflow in a coastal marine fish (Protonibea diacanthus) in the wet-dry tropics of northern Australia” [Fish. Res. 285 (2025) 107343]","authors":"Jo Randall ,&nbsp;Hayden T. Schilling ,&nbsp;Brendan Adair ,&nbsp;Dion Wedd ,&nbsp;Alison King ,&nbsp;Thor Saunders ,&nbsp;David Crook","doi":"10.1016/j.fishres.2025.107353","DOIUrl":"10.1016/j.fishres.2025.107353","url":null,"abstract":"","PeriodicalId":50443,"journal":{"name":"Fisheries Research","volume":"285 ","pages":"Article 107353"},"PeriodicalIF":2.2,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143906731","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Corrigendum to “Socio-economic status and occupational mobility of China’s Fishery Population: A quantitative analysis based on social-survey data” [Fish. Res. 285(2025) 107362]","authors":"Yi Huang ,&nbsp;Ulf Dieckmann ,&nbsp;Mikko Heino","doi":"10.1016/j.fishres.2025.107374","DOIUrl":"10.1016/j.fishres.2025.107374","url":null,"abstract":"","PeriodicalId":50443,"journal":{"name":"Fisheries Research","volume":"285 ","pages":"Article 107374"},"PeriodicalIF":2.2,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143906732","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Survivability of spurdog (Squalus acanthias) in an inshore otter trawl fishery","authors":"Martin Oliver ,&nbsp;Ross O’Neill ,&nbsp;Matthew McHugh ,&nbsp;Daragh Browne ,&nbsp;Shane Murphy ,&nbsp;Cóilín Minto ,&nbsp;Nicolas Chopin ,&nbsp;Ronán Cosgrove","doi":"10.1016/j.fishres.2025.107379","DOIUrl":"10.1016/j.fishres.2025.107379","url":null,"abstract":"<div><div>Spurdog (<em>Squalus acanthias</em>) was previously fished by European Union (EU) vessels, but the fishery closed in 2011 due to poor stock status. Following positive advice on spurdog stock recovery, the fishery reopened in 2023 prompting assessments of management measures and post-capture survival. We assessed spurdog survivability in an inshore bottom otter trawl fishery using condition assessments and survivorship pop-up satellite archival tags (sPATs). We used a five-point scale (excellent, good, poor, moribund and dead) to categorise vitality of 463 sampled spurdog. Twenty spurdog in excellent, good and poor condition were tagged with sPATs. Moribund fish were assumed to have died. Tagged fish size was restricted to 80–100 cm total length (TL) in line with the size of fish capable of carrying tags, the maximum conservation reference size and condition assessments results. The observed fish vitalities were: 9.9 % excellent, 17.3 % good, 34.6 % poor, 38 % moribund and 0.2 % dead. We used a Kaplin-Meier estimator to assess survival of tagged fish over a 30-day period and estimated an overall survival rate of 78 % for spurdog between 80 and 100 cm. Study results provide important input towards enhanced management of spurdog fisheries in the North-East Atlantic.</div></div>","PeriodicalId":50443,"journal":{"name":"Fisheries Research","volume":"285 ","pages":"Article 107379"},"PeriodicalIF":2.2,"publicationDate":"2025-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143883131","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Analysis of environmental-economic sustainability of fishing vessels and its improvement by alternative powering options in projected decarbonization scenarios","authors":"Marija Koričan ,&nbsp;Ailong Fan ,&nbsp;Nikola Vladimir","doi":"10.1016/j.fishres.2025.107385","DOIUrl":"10.1016/j.fishres.2025.107385","url":null,"abstract":"<div><div>The fishery sector faces various environmental challenges to ensure its sustainability, particularly regarding Greenhouse Gas (GHG) emissions originating from fishing activities. Several measures are aimed at improving the energy efficiency of vessels, from technical measures (alternative fuels, hull modification and maintenance…) to operative ones (journey planning, draft and trim optimization…) and market based measures (incentives, green shipping practices, carbon taxation, etc). This paper develops an environmental-economic sustainability index to address challenges in assessing the sustainability of fishing fleets. The index considers all costs, revenues, as well as potential carbon taxation, ensuring its applicability across various regions, fishing gear, and fuels. The application of the sustainability index is presented in the case of the Croatian large-scale fishing fleet, using real-time data on fuel consumption and exact data on the catch rate according to the type of fishing gear. The results show that while most vessels operate profitably under current regulations, the inclusion of carbon taxation may make them unsustainable. To examine the possibility of using alternative fuels, a life-cycle cost assessment of battery-, methanol- and biodiesel-powered systems was conducted. The results showed that certain solutions can become sustainable but the catch rate must be taken into account when investigating their applicability. Full electrification, although the most environmentally friendly, requires very high investment costs making it unsustainable without incentives.</div></div>","PeriodicalId":50443,"journal":{"name":"Fisheries Research","volume":"285 ","pages":"Article 107385"},"PeriodicalIF":2.2,"publicationDate":"2025-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143863980","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Fisheries dependent and independent data inform a capture technique for an emerging invasive fish species in the mainstem Mississippi River; Black Carp Mylopharyngodon piceus","authors":"Patrick Kroboth,&nbsp;Michael Colvin,&nbsp;Cortney Broaddus","doi":"10.1016/j.fishres.2025.107368","DOIUrl":"10.1016/j.fishres.2025.107368","url":null,"abstract":"<div><div>Black Carp <em>Mylopharyngodon piceus</em> were imported into the United States in the 1970s and 1980s for use in aquaculture; escape occurred and reported wild captures increased. Lacking species-specific capture methods, we assessed fisheries dependent incidental Black Carp catches for a common method, hoop nets, by kernel density analysis to identify an area of increased reporting and compare frequency of reports for water temperature, river stage, and capture date to identify seasonality. We then used fisheries independent effort to identify co-occurrence of species via non-metric multi-dimensional scaling and fit Black Carp catch and environmental covariates by generalized linear models to assess site-specific environmental covariates facilitating capture. The best approximating distribution was refitted for predictions and inference. The greatest density of fisheries dependent hoop net captures (39 %) was near the confluence of the Missouri and Mississippi rivers, primarily from July-September. Captures were characterized by median water temperature 26.7°C, river stage 5.02 m, and 223 day-of-year (DOY; mid-August). Ordination of fisheries independent catch identified similarity in environmental covariates of Smallmouth Buffalo <em>Ictiobus bubalus</em> and Black Carp. The probability of capturing ≥ 1 Black Carp increased with DOY, decreased with increasing current velocity, and increased with depth. Most captures occurred in outside bends (87 %) or side channels (12 %). Probability of Black Carp capture was low but increased in summer and early fall when stage is lower, facilitating reduced current velocity and access to deeper areas. Results may be validated beyond this river segment to test if site-specific hydrology or habitat characteristics facilitated increased commercial and biologist capture and for replication.</div></div>","PeriodicalId":50443,"journal":{"name":"Fisheries Research","volume":"285 ","pages":"Article 107368"},"PeriodicalIF":2.2,"publicationDate":"2025-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143863981","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Variable post-capture condition estimated by visual assessment for key recreational species discarded in a nearshore marine charter fishery off eastern Australia","authors":"Julian M. Hughes ,&nbsp;Daniel D. Johnson ,&nbsp;Faith A. Ochwada-Doyle ,&nbsp;Jeffrey J. Murphy ,&nbsp;Matthew D. Taylor ,&nbsp;Ashley M. Fowler","doi":"10.1016/j.fishres.2025.107372","DOIUrl":"10.1016/j.fishres.2025.107372","url":null,"abstract":"<div><div>Many fish species caught in recreational fisheries are released after capture due to regulations or fisher preference. In regions where large proportions of the catch are released, assessing ‘post-capture survival’ (PCS) is essential for comprehensive stock assessments and sustainable management. Here we present a case study for the development and application of a simple semi-quantitative approach to provide ‘post-capture body condition’ (PCC) indices using visual assessment in a coastal boat-based angling fishery, providing an informative descriptive precursor to quantifying actual PCS. Assessment indices and scores were developed from published information on factors shown to affect PCS of the focal species, so that estimated PCC was indirectly related to survival. More than 2000 individuals of 18 species were visually assessed by trained observers prior to release and overall PCC estimated. For commonly released species, estimates of PCC were highly variable and primarily determined by the degree of observed barotrauma. Estimated PCC was highest for Bluespotted Flathead, Mahi Mahi, Yellowtail Kingfish and Pearl Perch, lower for Grey Morwong and Snapper, and lowest for Teraglin. For Grey Morwong and Teraglin, increasing capture depth also significantly decreased PCC. Body length and water temperature did not have a significant effect on the PCC of any species. Whilst true survival of each individual is not determined here, the approach described provides an efficient basic assessment of PCC which combines multiple factors into a single estimate providing an important descriptive precursor to inform future work using direct approaches to quantify actual PCS. Such studies may also improve the utility of this metric by defining the functional relationship between PCC scores and PCS. This approach can be easily implemented as a preliminary standard practice where there is an intention for PCS data to be collected to evaluate the effectiveness of management, or for stock assessments to account for indirect fishing mortality.</div></div>","PeriodicalId":50443,"journal":{"name":"Fisheries Research","volume":"285 ","pages":"Article 107372"},"PeriodicalIF":2.2,"publicationDate":"2025-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143859094","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The effect of haul size on price in the demersal seine fishery in Norway and implications for management","authors":"Katrine Eriksen,&nbsp;Geir Sogn-Grundvåg","doi":"10.1016/j.fishres.2025.107381","DOIUrl":"10.1016/j.fishres.2025.107381","url":null,"abstract":"<div><div>The high catch efficiency of demersal seine nets has made them widely used in commercial fisheries globally. However, when fish density is high, these nets can result in very large catches, leading to poor fish welfare and quality and the loss of dead and injured fish if the net bursts. Animal welfare is a public good closely tied to product quality in fisheries. Therefore, it is anticipated that smaller hauls will be encouraged through price premiums for high-quality fish in the ex-vessel market. Market failures, including information asymmetry regarding fish welfare and quality and imperfect competition, impede quality-based pricing and diminish economic incentives for reducing haul sizes. With recent proposals to regulate haul sizes in this fishery, estimating the price premium for smaller hauls has become relevant for management. In the case of command-and-control measures, this will contribute to the cost-benefit analysis. Regulations aimed at correcting market failures can also be considered. Either intervention will only be implemented if the social cost of inadequate fish welfare exceeds the social benefit of large catches. In a study of the Norwegian cod fishery, a mixed-effect model is applied to data on haul sizes for Atlantic cod catches and prices while accounting for other factors that may influence prices, including seller and buyer heterogeneity. The findings reveal only a weak link between haul sizes and prices, suggesting the presence of market failures. The discussion covers social costs and benefits and outlines potential management implications.</div></div>","PeriodicalId":50443,"journal":{"name":"Fisheries Research","volume":"285 ","pages":"Article 107381"},"PeriodicalIF":2.2,"publicationDate":"2025-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143859095","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}