Fisheries Research最新文献_第10页

Assessing narrow and composite Nordmøre-grid bar spaces in southeastern Australian penaeid trawls 评估澳大利亚东南部对虾拖网中狭窄的和复合的nordm ø重新栅格杆空间

IF 2.2 2区农林科学

Fisheries Research Pub Date : 2025-07-01 DOI: 10.1016/j.fishres.2025.107451

Matt K. Broadhurst

{"title":"Assessing narrow and composite Nordmøre-grid bar spaces in southeastern Australian penaeid trawls","authors":"Matt K. Broadhurst","doi":"10.1016/j.fishres.2025.107451","DOIUrl":"10.1016/j.fishres.2025.107451","url":null,"abstract":"<div><div>Owing to concerns over unwanted mortalities of fish in a southeastern Australian trawl fishery targeting school prawns, <em>Metapenaeus macleayi</em> (∼13–25 mm carapace length; CL), three experiments were done to quantify the effects on species- and size-selectivity due to reducing bar spaces throughout Nordmøre-grids (405 × 848 mm), and in the upper section only (405 × 424 mm; ‘composite grids’). In all experiments, a conventional grid comprising 20-mm bar spaces was the control. During experiment 1, trawls with treatment grids comprising either 18- or 16-mm spaces (i.e. close to the maximum heights of the largest school prawns) caught similar quantities of school prawns as the control, and while there were no significant catch or size effects, mean incidental catches of fish were incrementally lower in trawls with the 18- (by 12 %) and 16-mm grids (by 46 %). In the second experiment, two composite grids comprising 20-mm spaces in the lower section and either 16 or 14 mm in the top (16/20- and 14/20-mm grids) were fished against the control. Only the 14/20-mm grid significantly reduced the catches of school prawns (by 17 % across all sizes) and the weight of incidental catch (by 46 %). The 16/20- and 16-mm grids were then compared in trawls against the control during experiment 3 to inform likely species-specific vertical orientations anterior to the grid. There were no significant effects on school prawn catches or sizes (although mean weights were lower for the 16- than 16/20-mm grid), but the weights of incidental fish catches were similarly and significantly lower for both narrower-spaced grids (by 50 and 57 %). The data imply bar spaces in regional Nordmøre-grids can be reduced to widths ∼1 mm larger than the maximum carapace dimensions (height) of the largest school prawns, and in the top section to maximise species selectivity. Similar configurations may apply to other trawl fisheries targeting penaeids.</div></div>","PeriodicalId":50443,"journal":{"name":"Fisheries Research","volume":"288 ","pages":"Article 107451"},"PeriodicalIF":2.2,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144523010","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}

引用次数: 0

Relationship between size and condition metrics and the recapture probability of stocked landlocked Atlantic salmon and brown trout in lake fisheries 湖泊渔业中储存的内陆大西洋鲑鱼和褐鳟鱼的大小和条件指标与再捕获概率的关系

IF 2.2 2区农林科学

Fisheries Research Pub Date : 2025-06-28 DOI: 10.1016/j.fishres.2025.107449

Matti Janhunen , Anssi Vainikka , Jorma Piironen

{"title":"Relationship between size and condition metrics and the recapture probability of stocked landlocked Atlantic salmon and brown trout in lake fisheries","authors":"Matti Janhunen , Anssi Vainikka , Jorma Piironen","doi":"10.1016/j.fishres.2025.107449","DOIUrl":"10.1016/j.fishres.2025.107449","url":null,"abstract":"<div><div>Stocking-derived catches serve as indicators of the feasibility of put-grow-and-take (PGT) fisheries for salmonids. Here, we report results from a large tagging program of landlocked Atlantic salmon and brown trout stocked at ages 2 and 3 in two large geographically close boreal lakes, Pielinen and Höytiäinen, in Finland. In addition to describing recapture patterns in these lake fisheries, we assessed whether the commonly measured phenotypic characters such as body length and condition, fin erosions, and early male maturity, were related to recapture probabilities. In both species and study lakes, the released fish recruited to fisheries at 3 or 4 years of age and were exposed to heavy total mortality rate (<em>Z</em> = 1.06 – 2.07 yr<sup>−1</sup>) as estimated from catch curves. As in many previous studies, a positive relationship was found between fish length at release and recapture probability. Together with the influence of body condition, the effect of body length was particularly strong among fish stocked at age 2. In both species, recapture probability was lower for fish that showed precocious maturity and negatively associated with pectoral fin erosion. Our results complement existing knowledge on the relationship between fish condition indicators and stocking success, and provide data to set quality metrics for fish released for PGT purposes. The recapture patterns underline the role and responsibility of fisheries management in reducing the premature harvest of stocked fish to ensure positive net yields from the stocking programs and decreasing the overall mortality rate to reach conservation goals.</div></div>","PeriodicalId":50443,"journal":{"name":"Fisheries Research","volume":"288 ","pages":"Article 107449"},"PeriodicalIF":2.2,"publicationDate":"2025-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144500877","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}

引用次数: 0

Life history traits and fishery of the horned octopus (Eledone cirrhosa) in the Western Mediterranean Sea 西地中海角章鱼（Eledone肝硬化）的生活史特征和渔业

IF 2.2 2区农林科学

Fisheries Research Pub Date : 2025-06-27 DOI: 10.1016/j.fishres.2025.107446

Antoni Quetglas, Aina de Mesa, Beatriz Guijarro, Enric Massutí, Francesc Ordinas, Núria Zaragoza, Maria Valls

{"title":"Life history traits and fishery of the horned octopus (Eledone cirrhosa) in the Western Mediterranean Sea","authors":"Antoni Quetglas, Aina de Mesa, Beatriz Guijarro, Enric Massutí, Francesc Ordinas, Núria Zaragoza, Maria Valls","doi":"10.1016/j.fishres.2025.107446","DOIUrl":"10.1016/j.fishres.2025.107446","url":null,"abstract":"<div><div>In the Mediterranean, the horned octopus constitutes one of the most important cephalopod species in the by-catch of the bottom trawl fishery (BTF). Until the early 2000s, it also supported seasonal fisheries targeting the small-sized individuals in some areas. In this work, some life-history traits (e.g., population structure, reproduction, condition, diet), the bathymetric distribution and the fishery of this octopus were analysed using data collected during the last 20 years in the western Mediterranean. The highest species abundance was at 150–450 m depth and females five-folded males at 50–150 m, indicating spatial segregation by sex at certain life stages. Reproduction in the study area takes place during a protracted period, from February to July, but with a clear peak in June-July. The relationships between condition and diet indices suggest that sexual maturity would be reached at the expense of stored energy in the digestive gland in males but from food intake in females. The predominance of individuals above the size at first maturity in waters below 300 m depth would indicate that reproduction occurs on these slope grounds. The most important prey items in the diet were by far crustaceans and fish, followed by secondary prey such as molluscs, echinoderms and annelids. The stock exploited by the BTF from Tarragona (Catalan Sea) was assessed using a surplus production model, which revealed that the stock status has improved rapidly from 2020, most likely due to significant fishing effort reductions within the framework of EU regulations.</div></div>","PeriodicalId":50443,"journal":{"name":"Fisheries Research","volume":"288 ","pages":"Article 107446"},"PeriodicalIF":2.2,"publicationDate":"2025-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144489492","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}

引用次数: 0

In hot water: How marine heatwaves are transforming the recreational albacore fishery in the eastern North Pacific 在热水中：海洋热浪如何改变北太平洋东部的休闲长鳍鱼渔业

IF 2.2 2区农林科学

Fisheries Research Pub Date : 2025-06-25 DOI: 10.1016/j.fishres.2025.107447

Ian Blixt , Barbara Muhling

{"title":"In hot water: How marine heatwaves are transforming the recreational albacore fishery in the eastern North Pacific","authors":"Ian Blixt , Barbara Muhling","doi":"10.1016/j.fishres.2025.107447","DOIUrl":"10.1016/j.fishres.2025.107447","url":null,"abstract":"<div><div>Albacore tuna (<em>Thunnus alalunga</em>: Scombridae) are a socioeconomically important species globally. A portion of albacore in the North Pacific stock recruit to the California Current Large Marine Ecosystem as juveniles, where they undertake seasonal inshore-offshore migrations. A series of marine heatwaves starting in 2014–2016 produced unprecedented oceanographic conditions in the northern California Current Large Marine Ecosystem, during which time recreational albacore landings in Washington State increased by 950.2 %. Fishing effort in this fishery increased by 1109.7 % during the same time period. We used Generalized Additive Mixed Models to show that a thermal habitat compression index was strongly associated with this increase in landings. During marine heatwaves albacore thermal habitat likely became more available closer to shore, and recreational fishers appeared to opportunistically increase fishing intensity to target them. In contrast, the catch per unit of effort (fish per trip) in this fishery was hyperstable, and less responsive to environmental drivers. While our results show that landings rose sharply during a recent period of ocean warming, effort from smaller private fishing vessels has been increasing since 2012, suggesting that social drivers of effort and participation are also important in this fishery. Given the complex behaviours of both albacore and fishing fleets, their response to future climate change will be more complicated than a simple function of sea surface temperature. However, this emergent fishery may represent an increasingly important source of supplemental revenue in coastal communities where other historically important fisheries are declining.</div></div>","PeriodicalId":50443,"journal":{"name":"Fisheries Research","volume":"288 ","pages":"Article 107447"},"PeriodicalIF":2.2,"publicationDate":"2025-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144470706","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}

引用次数: 0

Modeling spatio-temporal dynamics of Patagonian toothfish spawning in Kerguelen waters using CPUE data 利用CPUE数据模拟Kerguelen水域巴塔哥尼亚齿鱼产卵的时空动态

IF 2.2 2区农林科学

Fisheries Research Pub Date : 2025-06-24 DOI: 10.1016/j.fishres.2025.107422

Fanny Ouzoulias, Clara Péron, Félix Massiot-Granier

{"title":"Modeling spatio-temporal dynamics of Patagonian toothfish spawning in Kerguelen waters using CPUE data","authors":"Fanny Ouzoulias, Clara Péron, Félix Massiot-Granier","doi":"10.1016/j.fishres.2025.107422","DOIUrl":"10.1016/j.fishres.2025.107422","url":null,"abstract":"<div><div>The act of spawning of fish can be influenced by a variety of factors, including environmental conditions and human activities, particularly fishing. Patagonian toothfish (<em>Dissostichus eleginoides</em>) is a commercially exploited fish species, occupying the southern Patagonian and Chilean shelves, as well as the sub-Antarctic submarine plateaux. It is characterized by a late maturity and slow body growth, which are key considerations in its management and conservation. In this study, we investigated the spatio-temporal dynamics of Patagonian toothfish spawners in the Kerguelen region using fishery observer data, from 2020 to 2024. We predicted spawner hotspots and seasonal trends of spawner abundance using spatially-explicit Generalized Additive Models (GAMs) that modeled the spawner CPUE (Catch Per Unit of Effort). Our results suggest that toothfish female spawners aggregate at specific locations from early June to the end of July. Hotspots of male spawners were found from mid-June to mid-July and then from mid-August to mid-September. The main spatial overlap between male and female spawner hotspots is located on the western slopes and the north of Skiff bank (along the 1500 m isobath) and in the north-western region (near the 500 m isobath). Our findings enabled the formulation of hypotheses concerning the ecological drivers influencing Patagonian toothfish spawning and emphasize the importance of considering seasonal localized closures to avoid mortality and disturbance during spawning.</div></div>","PeriodicalId":50443,"journal":{"name":"Fisheries Research","volume":"288 ","pages":"Article 107422"},"PeriodicalIF":2.2,"publicationDate":"2025-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144366685","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}

引用次数: 0

Letter to the Editor re: Ryznar, E.R., & Litzow, M.A. (2024). “Predicting the distribution of red king crab bycatch in Bering Sea flatfish trawl fisheries” [Fisheries Research 279, 107158] 致编辑的信re: Ryznar， E.R, & Litzow， M.A.（2024）。“白令海比目鱼拖网渔业副渔获物红王蟹分布预测”[水产研究]，279,107158。

IF 2.2 2区农林科学

Fisheries Research Pub Date : 2025-06-20 DOI: 10.1016/j.fishres.2025.107425

André E. Punt, Beatriz Morales-Nin

引用次数: 0

Development of a spatiotemporally integrated per-recruit model for Southern Flounder in the northern Gulf of America 美国湾北部南比目鱼的时空整合每招募模型的发展

IF 2.2 2区农林科学

Fisheries Research Pub Date : 2025-06-19 DOI: 10.1016/j.fishres.2025.107444

Calvin Chee, Patrick M. Graham, Robert T. Leaf

{"title":"Development of a spatiotemporally integrated per-recruit model for Southern Flounder in the northern Gulf of America","authors":"Calvin Chee, Patrick M. Graham, Robert T. Leaf","doi":"10.1016/j.fishres.2025.107444","DOIUrl":"10.1016/j.fishres.2025.107444","url":null,"abstract":"<div><div>Southern Flounder, <em>Paralichthys lethostigma</em>, is an important fish in the northern Gulf of America and has declined throughout its range. In this work, we evaluate a spatially- and temporally-integrated per-recruit model by incorporating information on movement dynamics and spatial differences in fishing pressure. A total of n = 80 Southern Flounder were tagged in Saint Louis Bay, Mississippi with acoustic transmitters. We classified n = 11 individuals as migrators, these individuals exhibiting movement to offshore spawning locations, and n = 16 individuals as residents, these individuals overwintering in inshore habitats. Incorporating the total proportion of migrators, timing of egress from inshore habitats, and differences between inshore and offshore fishing pressure into the spatiotemporally integrated per-recruit model resulted in changes to reference points. In the traditional per-recruit model, at Mississippi’s current minimum size limit of 305 mm, F<sub>0.4</sub> = 0.41 y<sup>−1</sup> and F<sub>max</sub> = 0.78 y<sup>−1</sup>; at a size limit of 381 mm, reference points increase to F<sub>0.4</sub> = 0.64 y<sup>−1</sup> and F<sub>max</sub> = 1.12 y<sup>−1</sup>. Under the current 305 mm size limit, F<sub>0.4</sub> = 0.41 y<sup>−1</sup> and F<sub>max</sub> = 0.78 y<sup>−1</sup> in the traditional model, while F<sub>0.4</sub> = 0.27 y<sup>−1</sup> and F<sub>max</sub> = 0.52 y<sup>−1</sup> in the integrated model. These contrasts indicate that the stock is more vulnerable when movement is explicitly considered in the model. The results of both traditional and spatiotemporally integrated per-recruit models indicate that changes to the current management regime could benefit the Southern Flounder stock.</div></div>","PeriodicalId":50443,"journal":{"name":"Fisheries Research","volume":"288 ","pages":"Article 107444"},"PeriodicalIF":2.2,"publicationDate":"2025-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144322542","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}

引用次数: 0

Climate stressors, food security, and participation decisions among women in seafood production systems 气候压力因素、粮食安全以及妇女在海产品生产系统中的参与决策

IF 2.2 2区农林科学

Fisheries Research Pub Date : 2025-06-19 DOI: 10.1016/j.fishres.2025.107440

Neville N. Suh , Richard A. Nyiawung

{"title":"Climate stressors, food security, and participation decisions among women in seafood production systems","authors":"Neville N. Suh , Richard A. Nyiawung","doi":"10.1016/j.fishres.2025.107440","DOIUrl":"10.1016/j.fishres.2025.107440","url":null,"abstract":"<div><div>If properly managed, seafood production systems can provide a sustainable and climate-resilient source of nutrient and protein-rich food and employment for millions of people in coastal communities. However, seafood is declining due to myriad social, economic, and climate change stressors, affecting fishery-based livelihoods and the decision for some actors to continue harvesting. This study uses the case of small-scale women oyster harvesters in The Gambia to assess how fishery-based livelihood activities, climate stressors, climate adaptation, and household food security influence surveyed respondents' willingness to continue harvesting. Cross-sectional data were collected from 357 women oyster harvesters in 16 oyster communities in The Gambia. We show a negative association between willingness to continue with women oyster harvesters’ perception of increasing temperatures, increasing storms, and decreasing rainy days over a 5-year recall period. Similarly, we show a negative association between women oyster harvesters’ willingness to continue and food-insecure households. Meanwhile, a positive relationship was established between respondents' willingness to continue and participation in planting mangrove trees as a climate adaptation strategy. This study advances the argument for the need to pay attention to challenges facing seafood production systems and their sustainability now and in the future. The empirical evidence highlighted in this study provides a strong rationale for policies, strategies, and interventions that support climate-resilient seafood production systems, livelihood diversification, and food security in The Gambia and other developing countries.</div></div>","PeriodicalId":50443,"journal":{"name":"Fisheries Research","volume":"288 ","pages":"Article 107440"},"PeriodicalIF":2.2,"publicationDate":"2025-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144322541","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}

引用次数: 0

Influence of environmental drivers on the interannual variability of somatic growth of the southern blue whiting (Micromesistius australis) in the Southeastern Pacific Ocean 环境驱动因素对东南太平洋南蓝白鲑体细胞生长年际变化的影响

IF 2.2 2区农林科学

Fisheries Research Pub Date : 2025-06-18 DOI: 10.1016/j.fishres.2025.107441

Claudeth Asencio González , Guido Plaza , Francisco Cerna

{"title":"Influence of environmental drivers on the interannual variability of somatic growth of the southern blue whiting (Micromesistius australis) in the Southeastern Pacific Ocean","authors":"Claudeth Asencio González , Guido Plaza , Francisco Cerna","doi":"10.1016/j.fishres.2025.107441","DOIUrl":"10.1016/j.fishres.2025.107441","url":null,"abstract":"<div><div>Somatic growth in ectothermic vertebrates is an important indicator of population health. This study aimed to identify the influence of environmental drivers on the interannual variability of growth chronologies using linear mixed-effects models (LMM), for the Southern blue whiting (<em>Micromesistius australis</em>), a demersal fish of commercial importance in the Southeastern Pacific Ocean (SPO). Three separate growth chronologies were built based on a global (i.e., annuli), translucent and opaque band width of sagittal otoliths, over a 36-year period (1984–2019). A regime shift analysis (STARS) detected significant changes for the global growth chronology in 1993 and 1998, for the annual width of opaque zones in 1999 and for the annual width of translucent zones in 2013. LMMs showed that age was the main intrinsic factor affecting growth variability. However, extrinsic factors, such as the Pacific Decadal Oscillation (PDO), the El Niño-Southern Oscillation (ENSO) phenomenon, and sea surface temperature (SST), significantly influenced the seasonal growth of opaque bands. PDO had a negative effect on growth variability, while spring SST showed a positive correlation with opaque growth. ENSO negatively impacted seasonal growth, probably due to warming anomalies. A positive relationship was also found between chlorophyll-<em>a</em> concentration and growth. No relationship was observed between annual width of translucent zones and environmental drivers. The present study established the first standardized annual seasonal growth chronologies for <em>M. australis</em> in the SPO, identifying temperature as the main extrinsic driver triggering interannual somatic growth variation.</div></div>","PeriodicalId":50443,"journal":{"name":"Fisheries Research","volume":"288 ","pages":"Article 107441"},"PeriodicalIF":2.2,"publicationDate":"2025-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144313700","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}

引用次数: 0

Exploring the trophic strategies of two large pelagic species inhabiting the Galapagos Marine Reserve 探索居住在加拉帕戈斯海洋保护区的两个大型远洋物种的营养策略

IF 2.2 2区农林科学

Fisheries Research Pub Date : 2025-06-16 DOI: 10.1016/j.fishres.2025.107442

Andrés Moreira-Mendieta , Marjorie Riofrío-Lazo , Jenifer Suarez-Moncada , Diego Páez-Rosas

{"title":"Exploring the trophic strategies of two large pelagic species inhabiting the Galapagos Marine Reserve","authors":"Andrés Moreira-Mendieta , Marjorie Riofrío-Lazo , Jenifer Suarez-Moncada , Diego Páez-Rosas","doi":"10.1016/j.fishres.2025.107442","DOIUrl":"10.1016/j.fishres.2025.107442","url":null,"abstract":"<div><div>We explored the trophic strategies of the broadbill swordfish (<em>Xiphias gladius</em>) and dolphinfish (<em>Coryphaena hippurus</em>) within the Galapagos Marine Reserve (GMR), using stable isotope analysis to infer habitat use and their trophic interactions. Muscle tissue samples were collected after the seizure of an illegal fishing boat in 2018. We observed interspecific differences in δ¹³C and δ¹⁵N signatures, suggesting different feeding patterns between species. <em>X. gladius</em> exhibited a broader isotopic niche and higher trophic position, which could be associated with greater trophic flexibility and consumption of demersal and mesopelagic prey. In contrast, <em>C. hippurus</em> displayed a narrower isotopic niche and a lower trophic level, suggesting a more restricted diet focused on small epipelagic prey. Trophic niche partitioning between these two species would be an ecological mechanism aimed at reducing competition and facilitating their coexistence in the region. Our findings highlight the importance of the GMR as a buffer area and feeding ground for large commercially pelagic species in the Eastern Tropical Pacific.</div></div>","PeriodicalId":50443,"journal":{"name":"Fisheries Research","volume":"288 ","pages":"Article 107442"},"PeriodicalIF":2.2,"publicationDate":"2025-06-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144291691","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}

引用次数: 0