Fisheries Research最新文献

{"title":"Global sensitivity and uncertainty analyses of an ecosystem model for simulating food web dynamics in the Cooperation Sea, Southern Ocean","authors":"Lei Xing ,&nbsp;Arnaud Grüss ,&nbsp;Nicolas Barrier ,&nbsp;Jianfeng He ,&nbsp;Jianye Tang","doi":"10.1016/j.fishres.2025.107345","DOIUrl":"10.1016/j.fishres.2025.107345","url":null,"abstract":"<div><div>There is growing interest in developing and using ecosystem simulation models to advise fisheries management in the Southern Ocean. However, poor understanding of the impacts of uncertainty in ecosystem model parameters slows down progress towards operational ecosystem models. To address this issue, we explored uncertainty in the parameters estimated during the calibration of an OSMOSE ecosystem model for the Cooperation Sea (“OSMOSE-CooperationSea”) and the impacts of this uncertainty. Our investigations pertained to four types of calibrated parameters: (1) <em>Plank.access</em>, the proportion of the biomass of background species groups available to focal species groups; (2) <em>Bio</em>_{<em>flux</em>}, the parameter controlling the flux of migratory species group biomasses across the modelled domain boundaries; (3) <em>M</em>_{<em>larval</em>}, the instantaneous larval mortality of the focal species groups; and (4) <em>M</em>_{<em>natural</em>}, the additional natural mortality of the focal species groups. Results with the Morris method suggested that the community in the Cooperation Sea was most sensitive to changes in the <em>M</em>_{<em>larval</em>} parameter of mesopelagic fishes. The biomasses of large-size, long-lived species such as toothfishes, Adélie penguin (<em>Pygoscelis adeliae</em>), seals, and whales were most sensitive to the parameters specific to these species groups. By contrast, the biomasses of small-sized, short-lived species such as mesopelagic fishes and krill species were most sensitive to changes in the parameters specific to the predators of these species groups. Monte Carlo simulations indicated that community dynamics were more sensitive to the <em>M</em>_{<em>larval</em>} and <em>M</em>_{<em>natural</em>} parameters than to the <em>Plank.access</em> and <em>Bio</em>_{<em>flux</em>} parameters. After gradually increasing the <em>M</em>_{<em>larval</em>} or <em>M</em>_{<em>natural</em>} parameter, the biomasses of Adélie penguin, seals and whales decreased, while the biomasses of mesopelagic fishes and Antarctic krill increased. By providing a comprehensive analysis of uncertainty in the parameters estimated during the calibration process, the present study represents an important step towards an operational ecosystem model for supporting ecosystem-based management in the Cooperation Sea. The present study will serve as a valuable basis for similar ecosystem modelling efforts in the Southern Ocean.</div></div>","PeriodicalId":50443,"journal":{"name":"Fisheries Research","volume":"285 ","pages":"Article 107345"},"PeriodicalIF":2.2,"publicationDate":"2025-04-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143777093","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":"Interactions and spatiotemporal variations in the life history attributes of a non-native species in the upper Paraná River and its native congener","authors":"Élida Jeronimo Gouveia ,&nbsp;Diego Corrêa Alves ,&nbsp;Miguel Petrere Jr. ,&nbsp;Angelo Antonio Agostinho","doi":"10.1016/j.fishres.2025.107359","DOIUrl":"10.1016/j.fishres.2025.107359","url":null,"abstract":"<div><div>The introduction of species has negative effects on biodiversity and ecosystem functioning, with these impacts typically mediated by interspecific relationships. This study aimed to assess intraspecific and interspecific interactions, the effect of flood duration on the abundance of the congeners <em>Megaleporinus piavussu</em> (native) and <em>M. macrocephalus</em> (non-native), as well as variations in life-history traits across temporal scale for native species (pre- and post-invasion) and spatial scale for the non-native species (original and invaded environment). We tested the interaction effects between both species in population dynamics models. In contrast, life-history traits estimates for both species were obtained using length-frequency. The significant intraspecific competition coefficient suggests a negative impact on the annual per capita growth rate of both species. Only the native species population exhibited a significant interspecific competition coefficient. Flood duration positively affected the growth rate of both species, with more pronounced effects on the population of <em>M. piavussu</em>. During coexistence periods of the species (post-invasion period and invaded environments), a higher mean condition factor, female dominance, asymptotic length, longevity, and total mortality, including fishing mortality, were registered. On the other hand, the pre-invasion period for <em>M. piavussu</em> and the original environment for <em>M. macrocephalus</em> showed numerically lower values for life-history traits. Our findings suggest that the impact of the interspecific competition coefficient may be more pronounced for native species than for non-native species. Furthermore, the life history attributes of these species varied between the evaluated periods and locations in response to environmental conditions and food resource availability.</div></div>","PeriodicalId":50443,"journal":{"name":"Fisheries Research","volume":"285 ","pages":"Article 107359"},"PeriodicalIF":2.2,"publicationDate":"2025-04-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143768253","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":"Post-collapse somatic growth and population recovery failure of sardine (Sardinops sagax) in the northern Benguela from otolith biochronologies","authors":"Faye R.V. Brinkman ,&nbsp;Szymon Smoliński ,&nbsp;Heino O. Fock ,&nbsp;Mohammad Hadi Bordbar ,&nbsp;Anja Kreiner ,&nbsp;Moses S. Kalola ,&nbsp;Margit R. Wilhelm","doi":"10.1016/j.fishres.2025.107352","DOIUrl":"10.1016/j.fishres.2025.107352","url":null,"abstract":"<div><div>The sardine (<em>Sardinops sagax)</em> population in northern Benguela, Namibia, supported high catches in the 1950s-1960s and collapsed by the late 1960s. Despite a fishing moratorium since 2018, the population has shown no signs of recovery by 2023. In this study, a 48-year (1974–2021) biochronology was developed using archived sardine otoliths. Otolith increment widths, used as a proxy for annual fish growth, were analysed using linear mixed effects models to explore intrinsic (within individual) and extrinsic (sardine biomass, sea surface temperature and upwelling) factors contributing to annual variations in fish growth. The absence of otolith data from before the population collapse in the late 1960s meant that the analysis of predicted annual sardine otolith growth post-collapse showed short-term fluctuations but no significant long-term growth rate changes. Predicted annual sardine growth was significantly negatively linked with SST in Austral spring, and positively linked with upwelling in summer for the area 17–20 ºS (northern Namibia). The results suggest environmental conditions play a dominant role in driving sardine growth, exacerbated by the extremely low sardine biomass, which may be indicative of depensation. The study provides insight on the reasons behind the lack of recovery in sardine biomass. Therefore, otolith biochronologies provides a broader understanding of how small pelagic fish stocks respond to environmental changes.</div></div>","PeriodicalId":50443,"journal":{"name":"Fisheries Research","volume":"285 ","pages":"Article 107352"},"PeriodicalIF":2.2,"publicationDate":"2025-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143747645","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":"Overview of the Ecosystem-Based Fisheries Management (EBFM) workshop at the International Conference on lobster and crab fisheries in 2023","authors":"Nick Caputi ,&nbsp;Simon de Lestang ,&nbsp;Rick Fletcher ,&nbsp;Michael Fogarty ,&nbsp;Gretta Pecl ,&nbsp;Jason How","doi":"10.1016/j.fishres.2025.107354","DOIUrl":"10.1016/j.fishres.2025.107354","url":null,"abstract":"<div><div>While the need for ecosystem-based fisheries management (EBFM) has been long recognised, the escalating demands and serious threats that climate change poses to our marine ecosystems and the industries and human societies that depend on them, have increased the urgency for its adoption. Given this importance, EBFM was the overarching theme of the 5-day International Lobster and Crab conference held during October 2023 in Western Australia which included a special EBFM workshop that examined the following five concepts: species sustainability, ecosystem sustainability, economic outcomes, social amenity and social impacts. The workshop presentations covered the breadth of EBFM issues including the ecosystem effects of fishing, social, economic, environmental impacts and climate change, bycatch, governance issues in addition to the management of targeted lobster and crab stocks. The major outcomes and conclusions for fisheries management policy identified during the workshop included: (a) the need to take a ‘whole-of-resource’ approach rather than focusing on the effect of a particular fishery; (b) explicit recognition of socio-economic objectives in harvest strategies; (c) incorporating climate change within fisheries management systems; (d) assessment of stationarity assumptions in biological parameters; (e) recognising that regime shifts can result in major shifts in abundance and distribution of stocks; (f) importance of proper governance and compliance in fisheries management; (g) minimising fisheries interactions with protected species; (h) importance of long-term fishery-independent surveys for target species and ecosystem issues; (i) recovery of lost fishing gear; (j) recognition of spatial processes in the management of fisheries and the formation of marine protected areas; (k) importance of considering traditional knowledge alongside western science in fisheries assessment and management; and (l) acknowledging the need for ecosystem-based management which also takes into account the non-fisheries sectors competing for the same spatial area of the resource.</div></div>","PeriodicalId":50443,"journal":{"name":"Fisheries Research","volume":"285 ","pages":"Article 107354"},"PeriodicalIF":2.2,"publicationDate":"2025-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143747656","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":"Identifying the spatio-temporal distribution patterns of mixed fisheries to inform multispecies management in the Yellow and Bohai Seas","authors":"Jun Ren ,&nbsp;Jia Wo ,&nbsp;Qun Liu ,&nbsp;Yupeng Ji ,&nbsp;Binduo Xu ,&nbsp;Ying Xue ,&nbsp;Chongliang Zhang","doi":"10.1016/j.fishres.2025.107351","DOIUrl":"10.1016/j.fishres.2025.107351","url":null,"abstract":"<div><div>Mixed fisheries contribute to a substantial proportion of global landings and pose great challenges to fisheries management. In order to construct the management scheme for multiple species simultaneously, the species co-occurrence needs to be explicitly delineated in mixed fisheries. However, the task is hindered by the lack of survey coverage and the constraints of common species distribution models in ignoring biotic interactions. In the present study, we investigated the spatio-temporal distribution patterns of mixed fisheries over large spatial and temporal scales, by implementing the Vector Autoregressive Spatio-Temporal model (VAST) on the basis of fishery-dependent data collected from fishing logs. The fishery-dependent surveys were conducted among the commercial fishing vessels operating in the Yellow and Bohai Seas from 2012 to 2022. We used the VAST to handle the problem of unbalanced sampling, inflated zeros and interspecific interactions, and divided the species into species complexes with clustering analyses according to their correlation in the spatial or spatio-temporal distributions. Our results indicated that the studied species in mixed fisheries could be divided into three species complexes, and the composition within each group depended on consideration of spatial or spatio-temporal correlations. We demonstrated significant differences in the spatial distribution and aggregation areas among the species complexes, and substantial seasonal variations in occurrence of spatio-temporal complexes, which should be informative for the assignment of management unit within the mixed fisheries. Our study demonstrated the approach to assessing the species co-occurrence of mixed fisheries using fishery-dependent data, which offers the opportunity for guiding the future management of mixed fisheries.</div></div>","PeriodicalId":50443,"journal":{"name":"Fisheries Research","volume":"285 ","pages":"Article 107351"},"PeriodicalIF":2.2,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143747640","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":"Polychaete bait fisheries in Galicia (NW Spain)","authors":"Eloy Martínez ,&nbsp;Nuria Fernández ,&nbsp;Diana Fernández-Márquez ,&nbsp;Lucía Couceiro ,&nbsp;Daniel Escobar-Ortega ,&nbsp;Pablo Pita","doi":"10.1016/j.fishres.2025.107358","DOIUrl":"10.1016/j.fishres.2025.107358","url":null,"abstract":"<div><div>In Galicia (NW Spain) commercial polychaete fisheries have increased their importance compared to other traditional fisheries in recent years, both in terms of catches and economic benefits. We performed a systematic review of scientific literature to analyze the main attributes and the impacts of polychaete fisheries. Official landings statistics in Galicia showed that <em>Scoletoma laurentiana</em>, <em>Diopatra neapolitana</em>, <em>Arenicola marina</em>, and <em>Hediste diversicolor</em> are the species that are sold as bait for recreational fisheries. By an online survey of recreational fishers, we found that 17 % of them collect their own polychaetes, while the majority also buy them with very different frequencies. We estimated that recreational harvest is roughly eight times higher than commercial harvest for some species. Interviews with various stakeholders, including scientists, managers, commercial harvesters, recreational fishers, and sellers, revealed both positive and negative aspects of polychaete fisheries. Challenges include the lack of biological and ecological studies on exploited species and the necessity for reliable stock assessment methods, including the need for weight conversion factors for key species. Additionally, more information on the local and imported polychaete value chains is crucial. Addressing these issues will contribute to the development of more sustainable polychaete harvesting, benefiting both the environment and local and global economies.</div></div>","PeriodicalId":50443,"journal":{"name":"Fisheries Research","volume":"285 ","pages":"Article 107358"},"PeriodicalIF":2.2,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143747634","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":"Implementation of PIT-tags influence spatial distribution but not burst and hiding performance of a freshwater fish","authors":"Léa Lorrain-Soligon ,&nbsp;Alexis Golven ,&nbsp;Simon Agostini ,&nbsp;Aurélie Goutte","doi":"10.1016/j.fishres.2025.107350","DOIUrl":"10.1016/j.fishres.2025.107350","url":null,"abstract":"<div><div>Tagging techniques, such as electronic transmitters and Passive Integrated Transponders (PIT-tags), are commonly used to monitor individuals to gather data on migration routes, habitat preferences, interactions with the environment, as well as movements in both natural and laboratory settings. However, concerns about the impact of tagging on animal welfare and behavior have been raised. This study aimed to evaluate retention rates to intramuscular and intraperitoneal tag implantation locations in chubs (<em>Squalius cephalus</em>). We also quantified effects of intramuscular PIT-tags on swimming performance, exploratory behavior, movement complexity and hiding behavior (in a behavioral arena), as well as stress indicators. Our study demonstrates that intramuscular PIT-tagging implementing allow a higher retention rate (97.5 %) compared to peritoneal injection (78.6 %). This result is lower than in other studies, which might be linked to species-specific differences, or colder water preventing healing and thus reinforcing tag loss. Additionally most of the measured behavioral variables did not show significant differences between intramuscularly tagged and untagged individuals. Tagged individuals still expressed reduced positioning at the center of the behavioral arena 3 weeks after tagging. This result suggests that the implantation of pit-tag could potentially affect exploration behavior and spatial distribution of fish in their environment in the short term. Longer-term effects should be considered but, according to our findings, intramuscular tagging appears to be a more reliable option for studies prioritizing long-term data collection. One may take into account the effects of these tags when computing fine-scale behavioral assessments, or should consider alternative methods.</div></div>","PeriodicalId":50443,"journal":{"name":"Fisheries Research","volume":"285 ","pages":"Article 107350"},"PeriodicalIF":2.2,"publicationDate":"2025-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143747636","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":"Which baits for attracting black seabream (Spondyliosoma cantharus) in fish traps?","authors":"Sonia Méhault,&nbsp;Julie Fluhr,&nbsp;Fabien Morandeau,&nbsp;Marianne Robert,&nbsp;Julien Simon,&nbsp;Jéromine Baudry,&nbsp;Dorothée Kopp","doi":"10.1016/j.fishres.2025.107355","DOIUrl":"10.1016/j.fishres.2025.107355","url":null,"abstract":"<div><div>The pressure that fishing exerts on marine ecosystems is of increasing concern worldwide. When deployed in compliance with appropriate technical regulations, the use of passive baited gear such as traps is a selective and low-impact fishing technique that can contribute to the sustainable exploitation of marine resources. In the case of traps or lines, the choice of bait might further increase the selectivity of the gear, particularly when the decision is based on the feeding preferences of the target species. In the present study, we investigate the effectiveness of different types of bait in attracting black seabream (<em>Spondyliosoma cantharus</em>), a commercially valuable fish with healthy populations in the Bay of Biscay (France). Specifically, we deployed a baited underwater video camera devoid of trap gear to identify the preferred bait among 10 options selected based on a review of the literature and interviews with recreational and professional fishermen. Because the performance (attractiveness) of a bait might vary depending on how it is assessed, we calculated and compared three indicators to describe the behavior of black seabream in relation to each bait: the number of fish per hour that exhibited Interest or Baited behaviors, with the latter being characterized by an attempt to eat the bait; the amount of time these fish spent in the vicinity of the bait (referred to as time of residence); and the probability that a fish that entered the view of the camera would exhibit Baited behavior (referred to as Baited probability). Cockles were associated with the longest time of residence of Baited fish and presented the highest Baited probability. Lugworm presented the highest time of residence for Interested fish, but the lowest Baited probability. More generally, all baits except an artificial lure demonstrated an ability to attract black seabream, but this tended to decrease with soaking time. The complementarity of the indicators used is discussed, as well as the application of our results to the development of passive baited gear such as fish traps targeting black seabream.</div></div>","PeriodicalId":50443,"journal":{"name":"Fisheries Research","volume":"285 ","pages":"Article 107355"},"PeriodicalIF":2.2,"publicationDate":"2025-03-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143724552","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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":"Life-history traits, maturation, and energy allocation of a small mesopelagic squid Abralia multihamata","authors":"Chun-I Chiang ,&nbsp;Chia-Hui Wang","doi":"10.1016/j.fishres.2025.107347","DOIUrl":"10.1016/j.fishres.2025.107347","url":null,"abstract":"<div><div>Enoploteuthid squids are abundant and are typically bycatch in commercial fisheries, playing a significant role in the trophic structure of the mesopelagic boundary community. The life-history traits and maturation of <em>Abralia multihamata</em> in the waters off the southeastern Taiwan Strait were studied through statolith microstructure analysis. Additionally, energy allocation between somatic and reproductive growth was evaluated in relation to maturity stage and hatching season. The results indicated that the estimated age of 299 post-recruit individuals ranged from 43 to 150 days and that hatching occurs year-round, with a peak in autumn. Significant sexual dimorphism was observed in maturation, growth patterns, and energy strategies. Males began maturing at a smaller size (25.8–28.2 mm) but at an older age (68.4–78.8 days) than females (36.0–37.6 mm at 50.3–70.3 days). Non-asymptotic and asymptotic growth models were best described by the exponential and von Bertalanffy growth function for females and males, respectively, though pre-recruit individuals are still needed to establish complete growth patterns. Significant differences in somatic condition, lifetime growth, and reproductive investment were observed in males across hatching seasons, whereas these measures in females varied with reproductive development. This suggests that <em>A. multihamata</em> females and males, with differing relative energetic demands, likely employ sex-specific energy utilization strategies. There were no energy trade-offs between somatic condition and reproductive investment but negative correlations between lifetime growth and reproductive investment, supporting the hypothesis that cephalopods prioritize energy from ingested food to maintain both somatic and reproductive conditions.</div></div>","PeriodicalId":50443,"journal":{"name":"Fisheries Research","volume":"285 ","pages":"Article 107347"},"PeriodicalIF":2.2,"publicationDate":"2025-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143724551","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":"Changes in the multi-species marine invertebrate fishery production in Bolinao, Pangasinan, northwestern Philippines after 30 years (1992–2023)","authors":"Jerwin G. Baure ,&nbsp;Rona Cabanayan-Soy ,&nbsp;Marie Antonette Juinio-Meñez","doi":"10.1016/j.fishres.2025.107349","DOIUrl":"10.1016/j.fishres.2025.107349","url":null,"abstract":"<div><div>Marine invertebrates, many of which are gleaned, are part of the regular diet and provide income to rural coastal households in Bolinao, Pangasinan in northwestern Luzon, Philippines. A four-month daily market survey was conducted from February–May 2023 and compared with market data in 1992–1993 to determine changes in species composition, volume and estimated value after 30 years. A total of 63 species were recorded, but species composition varied between the two surveys. The relative abundance of wild-caught and cultured invertebrates increased but that of gleaned species decreased in 2023. Invertebrates sold in the local market in February–May 2023 reached a volume of 30.8 MT worth ∼Php 6 million (USD 108,635). The annual volume was estimated at 76.9 MT worth ∼Php 14.9 million (USD 271,587). This does not include the amount directly consumed by fisher households and high-value species (e.g., sea cucumbers, sea urchin roe, lobsters) transported to outside markets. Comparison of production data suggests 61.4 % decline in the volume of crustaceans and mollusks, corresponding to 17.8 % decrease in value. Several gastropods, bivalves and crustaceans are no longer collected in some sites. The decline in production in some sites could be attributed to overfishing, environmental degradation and recent coastal development projects. Local tourism and improved roads to outside markets may have also influenced the decrease in the volume sold in the local market. To sustainably utilize invertebrate resources, fisheries management must be implemented, especially in areas with high invertebrate production but vulnerable to environmental degradation.</div></div>","PeriodicalId":50443,"journal":{"name":"Fisheries Research","volume":"285 ","pages":"Article 107349"},"PeriodicalIF":2.2,"publicationDate":"2025-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143724550","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}