Fisheries Research最新文献

{"title":"Priorities assessment in a marine protected area: The case of the Northeast of Mallorca","authors":"J.J. Martín-Estarellas ,&nbsp;M. Ortega ,&nbsp;M. Coll","doi":"10.1016/j.fishres.2025.107495","DOIUrl":"10.1016/j.fishres.2025.107495","url":null,"abstract":"<div><div>Globally, fishing has undergone significant transformations in recent decades, with further changes projected in response to social and environmental challenges. This study explores the prioritization of various local and global management measures aimed at ensuring the future sustainability of fisheries within the Llevant de Mallorca – Cala Ratjada Marine Protected Area (MPA), a marine reserve located in the northeastern part of Mallorca Island (Western Mediterranean) To this end, we used Q-method, a research technique used to study human subjectivity that combines qualitative and quantitative techniques to study individuals’ perceptions, opinions, or viewpoints on a specific topic. We identify and evaluate the primary discourses among key stakeholders, revealing three distinct perspectives encompassing different views on issues such as eliminating illegal practices, adapting European Union fisheries policies to local realities, increasing restrictions on trawling, promoting local consumption, and the significance of co-management. Furthermore, two points of consensus emerge across the discourses: (i) the necessity of decarbonizing the sector, and (ii) the importance of increasing public funding to support the employment of young fishers. However, both measures are perceived as low priorities. This study contributes to the literature by demonstrating how Q method can be applied to assess local and global priorities in the context of potential MPA evolution, offering valuable insights for the development of integrative priority assessments. It underscores the diversity of perspectives within small fishing communities and highlights the critical need for democratic governance structures to ensure this diversity is represented and accounted for in public policy development.</div></div>","PeriodicalId":50443,"journal":{"name":"Fisheries Research","volume":"289 ","pages":"Article 107495"},"PeriodicalIF":2.3,"publicationDate":"2025-08-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144757237","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":"Letter to the Editor re: Abass et al. (2024) “The mahseer: The tiger of water-an angler's delight in the Himalayas and the undisputed king of sport fishing” [Fisheries Research 279, 107147]","authors":"Beatriz Morales-Nin,&nbsp;André E. Punt","doi":"10.1016/j.fishres.2025.107439","DOIUrl":"10.1016/j.fishres.2025.107439","url":null,"abstract":"","PeriodicalId":50443,"journal":{"name":"Fisheries Research","volume":"288 ","pages":"Article 107439"},"PeriodicalIF":2.3,"publicationDate":"2025-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144738507","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 “Estimation of movement and mortality of Atlantic menhaden during 1966–1969 using a Bayesian multi-state mark-recovery model” [Fish. Res. 210 (2019) 204–213]","authors":"Emily M. Liljestrand ,&nbsp;Michael J. Wilberg ,&nbsp;Amy M. Schueller","doi":"10.1016/j.fishres.2025.107445","DOIUrl":"10.1016/j.fishres.2025.107445","url":null,"abstract":"","PeriodicalId":50443,"journal":{"name":"Fisheries Research","volume":"288 ","pages":"Article 107445"},"PeriodicalIF":2.3,"publicationDate":"2025-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144738508","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":"Spawning-biomass-per-recruit proxies for fisheries reference points under multiple axes of uncertainty","authors":"Cody Szuwalski ,&nbsp;André E. Punt","doi":"10.1016/j.fishres.2025.107494","DOIUrl":"10.1016/j.fishres.2025.107494","url":null,"abstract":"<div><div>Biological reference points provide metrics against which the effects of fisheries management can be measured and have been integral in fisheries management reform globally. Some of these reference points are predicated on the idea that a relationship exists between spawning biomass and recruitment, but this relationship has not been observed for a majority of stocks for which there are stock assessments. Proxies for target fishing mortalities and biomasses were developed to address this issue that identify reference points that perform well across a range of stock-recruit relationships using spawning-biomass-per-recruit (SBPR). These proxies are used widely but they only address the uncertainty in the stock-recruit relationship. We present a methodology for identifying SBPR proxies under multiple axes of uncertainty using eastern Bering Sea snow crab (<em>Chionoecetes opilio</em>) as an example. Incorporating uncertainty around the size at which mature crab become reproductively active in addition to stock-recruit uncertainty into the calculation of reference points tripled the spawning-biomass-per-recruit target relative to the status quo. This methodology could be extended to other species and sources of uncertainty, but care must be taken to define plausible realities to be considered in the axes of uncertainty because the most extreme scenarios considered can play a large role in determining reference points.</div></div>","PeriodicalId":50443,"journal":{"name":"Fisheries Research","volume":"289 ","pages":"Article 107494"},"PeriodicalIF":2.3,"publicationDate":"2025-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144750113","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":"Drifting fish aggregation devices as a tool to study oceanic marine protected areas","authors":"Arthur Blanluet ,&nbsp;Edward T. Game ,&nbsp;Kydd Pollock ,&nbsp;Nicholas H. Wolff ,&nbsp;Jason D. Everett ,&nbsp;Sandra Neubert ,&nbsp;Daniel C. Dunn ,&nbsp;Anthony J. Richardson","doi":"10.1016/j.fishres.2025.107474","DOIUrl":"10.1016/j.fishres.2025.107474","url":null,"abstract":"<div><div>To meet global conservation targets, there is a growing effort to establish oceanic (waters &gt;200 m depth) marine protected areas (oMPAs). However, despite substantial evidence for benefits of coastal MPAs to fish and fisheries, the effectiveness of oMPAs has been challenging to assess robustly. This is mainly because targeted data collection is expensive, so research often relies on catch data restricted to areas outside oMPA boundaries. Here we explore the use of drifting fish aggregating devices (dFADs) as a novel method to assess the effectiveness of oMPAs. We used acoustic data from 902 dFADs deployed by the fishing industry that drifted across the US Pacific Islands Heritage Marine National Monument around Palmyra Atoll – providing data both inside and outside the oMPA – to study spatial variation in tuna biomass density. Using a generalised additive mixed model with a suite of environmental covariates, we found the relationship between tuna biomass density and many environmental covariates made intuitive ecological sense with respect to known tuna behaviour, providing confidence in the model. We found no measurable increase in tuna biomass density inside the oMPA. This finding could have been influenced by the low fishing pressure around this particular oMPA, and regions with greater contrast in fishing pressure might show different results. This research highlights the utility of dFADs as a cost-effective tool for future studies to assess tuna biomass, especially in regions difficult or costly to sample as oMPAs.</div></div>","PeriodicalId":50443,"journal":{"name":"Fisheries Research","volume":"289 ","pages":"Article 107474"},"PeriodicalIF":2.3,"publicationDate":"2025-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144721858","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":"Horizontal target strength of the Japanese anchovy Engraulis japonicus for sonar surveys","authors":"Naizheng Yan ,&nbsp;Tohru Mukai ,&nbsp;Shunsuke Tanigami","doi":"10.1016/j.fishres.2025.107481","DOIUrl":"10.1016/j.fishres.2025.107481","url":null,"abstract":"<div><div>The horizontal target strength (TS) of Japanese anchovies (<em>Engraulis japonicus</em>) remains poorly understood and inaccurately estimated for acoustic fish resource surveys using quantitative scanning sonars. In this study, the TS was investigated in a fishing port using a tethering method and estimated using a prolate spheroidal model. Measurements were conducted at a frequency of 28 kHz, with ultrasound emitted horizontally at 0° and at angles of 10° and 20° above the fish, while the fish were rotated in the horizontal plane. Consequently, the measured and estimated TS values demonstrated good agreement. At depression angles (tilt angle in sonar surveys) of 10° and 20°, the yaw angle characteristics of the TS showed no significant changes; however, the directivities of the TS became sharper as the depression angle increased. In addition, the average normalized maximum TS values obtained by measurements were −61.9, −62.3, and −60.8 dB at depression angles of 0°, 10°, and 20°, respectively. A simulation showed that the pitch angle distribution of fish and the orientation of individual fish within a school had a minimal impact on lateral TS, whereas the yaw angle had a significant effect. Results indicate that a shallow depression angle of 20° or less is optimal for resource surveys using sonar, and it is essential to develop a method for accurately determining the yaw angle distribution within a fish school.</div></div>","PeriodicalId":50443,"journal":{"name":"Fisheries Research","volume":"288 ","pages":"Article 107481"},"PeriodicalIF":2.3,"publicationDate":"2025-07-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144721084","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 biology of mottled spinefoot (Siganus fuscescens) in Iligan Bay, Philippines: Insights into spawning patterns with consideration of lunar influence","authors":"Ahmida I. Lininding ,&nbsp;Ephrime B. Metillo ,&nbsp;Armi G. Torres ,&nbsp;Ivane R. Pedrosa-Gerasmio","doi":"10.1016/j.fishres.2025.107482","DOIUrl":"10.1016/j.fishres.2025.107482","url":null,"abstract":"<div><div>The mottled spinefoot (<em>Siganus fuscescens</em>), locally known as “Danggit”, holds significant commercial value in the Philippines. This study investigates various reproductive aspects of <em>S. fuscescens</em>, including gonad maturation, sex ratio, spawning season, fecundity, and potential influence of lunar cycle and selected environmental factors on spawning. A comprehensive sampling effort collected 1432 individuals of <em>S. fuscescens</em> from May 2022 to April 2023, with sampling conducted per lunar phase. The total length (TL) and weight of <em>S. fuscescens</em> ranged from 8.8 to 26.8 cm TL (Mean:17.33 cm ±0.08) and 8.1 g to 237.5 g (Mean:72.81 g ± 1.01), respectively. Although there are more females (n = 735) than males (n = 697), the overall sex ratio of 1.05:1 did not significantly deviate from 1:1. Males reached the length at first maturity (<em>L</em>_<em>m50</em>) at a lower size compared to females, with a length at first maturity (<em>L</em>_<em>m50</em>) estimated at 17.54 cm for males and 20.24 cm in females. The absolute fecundity displayed a wide range, from 48,772 to 843,511 eggs, with a mean of 271,327 ± 48,373 eggs. Relative fecundity varied from 44 to 1255 eggs per gram of body weight, averaging 275 eggs/g. A significant correlation was observed between absolute fecundity and ovary weight. Based on the Gonadosomatic Index (GSI), two spawning periods were observed - from May to July 2022 and another from February to April 2023. Within these periods, the highest spawning activity occurred in July 2022 and March 2023, respectively. GSI was highest during the new moon, followed by the first quarter. Among the environmental factors examined, chlorophyll <em>a</em> concentration and precipitation may have significant influence on the spawning of <em>S. fucescens</em>. These findings underscore the importance of robust scientific data to support policy, particularly in implementing regulations prohibiting fishing during species spawning season and fostering sustainable fisheries management practices.</div></div>","PeriodicalId":50443,"journal":{"name":"Fisheries Research","volume":"288 ","pages":"Article 107482"},"PeriodicalIF":2.2,"publicationDate":"2025-07-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144713860","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":"On the accuracy of self-reported data for fishing effort estimates – A case study from a polyvalent coastal fishery","authors":"Nuno Sales Henriques ,&nbsp;Tommaso Russo ,&nbsp;Karim Erzini ,&nbsp;Jorge M.S. Gonçalves","doi":"10.1016/j.fishres.2025.107483","DOIUrl":"10.1016/j.fishres.2025.107483","url":null,"abstract":"<div><div>The quantification and the analysis of fishing activity is one the most important features in fisheries sciences and ocean management, and fishery-dependent data has always been the main source of information used to that end.</div><div>Within the different types of fishery-dependent data, self-reported logbook data provides vast amounts of different information about fishing activities. Despite their enormous importance, the quality and reliability of these data are surprisingly understudied. Yet, the accuracy and consistency of this type of data are sometimes difficult to quantify.</div><div>With the purpose of studying how logbook data can be a reliable source for fishing effort quantification, here we estimate and compare, for the Portuguese mainland coastal polyvalent fleet, the fishing effort of each vessel from two types of fishery-dependent data: 1- logbook data and 2- official landing data.</div><div>The results showed a difference of 22.7 % between the overall number of fishing trips from both data types. In particular, vessels had a significantly lower number of fishing trips logged on logbook data than the trips estimated from official landing data.</div><div>Our findings support the concerns regarding the accuracy of logbook data, especially for estimating fishing effort. As far as effort inference is concerned, we suggest that the estimation of fishing effort from data logged and recorded from a third party, like official landing data, is a more reliable source of information than self-reported data.</div></div>","PeriodicalId":50443,"journal":{"name":"Fisheries Research","volume":"288 ","pages":"Article 107483"},"PeriodicalIF":2.2,"publicationDate":"2025-07-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144711742","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":"Adding splines to the SAM model improves stock assessment","authors":"Silius M. Vandeskog ,&nbsp;Magne Aldrin ,&nbsp;Daniel Howell ,&nbsp;Edvin Fuglebakk","doi":"10.1016/j.fishres.2025.107461","DOIUrl":"10.1016/j.fishres.2025.107461","url":null,"abstract":"<div><div>The stock assessment model SAM contains multiple age-dependent parameters that must be manually grouped together to obtain robust inference. This can make the model selection process slow, non-extensive and highly subjective, while producing unrealistic parameter estimates with discrete jumps. We propose to model age-dependent SAM parameters using spline functions, which can produce smoother parameter estimates, while making the model selection process faster, more automatic and less subjective. We develop a SAM spline model and compare it, using simulation studies and cross- and forward-validation methods, with published SAM models for 17 different fish stocks. The results show that our automated spline models overall outcompete the final accepted SAM models from <span>stockassessment.org</span>. We also demonstrate how our proposed spline model can be employed as a diagnostics tool for improving and better understanding properties of other SAM models.</div></div>","PeriodicalId":50443,"journal":{"name":"Fisheries Research","volume":"288 ","pages":"Article 107461"},"PeriodicalIF":2.2,"publicationDate":"2025-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144703003","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":"Marine fishing fleet in the Soviet Union: A review of its structure and dynamics","authors":"Alexander G. Dvoretsky,&nbsp;Vladimir G. Dvoretsky","doi":"10.1016/j.fishres.2025.107455","DOIUrl":"10.1016/j.fishres.2025.107455","url":null,"abstract":"<div><div>The Soviet Union was a prominent player in the marine living resource sector for a long time, owing to its powerful fishing fleet. In this paper, we summarized information on the fleet structure and analyzed its long-term dynamics during the postwar period (1946–1991). In terms of vessel type and project diversity, trawlers were the leading category, followed by transport vessels (carriers and reefers), processing vessels, and seiners. These categories also represented the largest share of the total fleet in terms of their relative contributions. The fleet modernization resulted in vessel types with greater length, speed, engine power, and processing capabilities. The number of vessels (NV) and total gross tonnage (TGT) increased in all categories except for whalers and sealers. The most pronounced increase in NV and TGT occurred from the mid-1950s to the mid-1970s. Medium-sized trawlers were the dominant category in terms of NV until 1978, while large-sized trawlers were the most common from 1979 to 1991. The observed positive changes in fleet structure reflected broader trends, including the modernization of the fishing sector, the reallocation of fishing efforts to high seas, and the impact of marine organism stock fluctuations. These changes aligned closely with global patterns in the industry. However, negative trends began to manifest in the 1980s, linked to inadequate management practices and challenges in advancing fleet modernization. Our study introduces novel insights for comparative analyses and retrospective studies on stock fluctuations in relation to fleet dynamics.</div></div>","PeriodicalId":50443,"journal":{"name":"Fisheries Research","volume":"288 ","pages":"Article 107455"},"PeriodicalIF":2.2,"publicationDate":"2025-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144687313","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}