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Economic interdependencies and sectoral impacts: An input-output analysis of the Norwegian fisheries and aquaculture sector amidst COVID-19
IF 2.2 2区 农林科学
Fisheries Research Pub Date : 2025-01-01 DOI: 10.1016/j.fishres.2024.107247
Fabian Rocha Aponte
{"title":"Economic interdependencies and sectoral impacts: An input-output analysis of the Norwegian fisheries and aquaculture sector amidst COVID-19","authors":"Fabian Rocha Aponte","doi":"10.1016/j.fishres.2024.107247","DOIUrl":"10.1016/j.fishres.2024.107247","url":null,"abstract":"<div><div>This study investigates the economic interdependencies and changes in the economic structure of the Norwegian fisheries and aquaculture sector during the COVID-19 pandemic through input-output analysis. Utilizing data from 2019 to 2021, I characterize the inter-industry structure of the sector relative to the Norwegian economy by using a Leontief, Ghosh models and the hypothetical extraction method that allow to calculate measures of inter-industry linkages. It is found that fisheries and aquaculture is key for the Norwegian economy as it has strong Hirschman-Rasmussen Indexes (HRI) for backward and forward linkages. Additionally, the sector has a relatively low dependence on imported inputs, and the structure of such imports did not change significantly between 2019 and 2021. A deeper analysis of the fisheries and aquaculture backward and forward linkages, reveals that the sector is highly connected to the food products, beverages, and tobacco industries, with stable dependency levels even amid the pandemic. The findings indicate that the fisheries and aquaculture sector maintained a stable industry structure despite COVID-19, partly due to its ability to adapt to changing global supply chain dynamics and domestic support measures. This research provides insights that may be helpful for policymakers aiming to enhance sectoral resilience and develop targeted economic recovery strategies in the face of future crises.</div></div>","PeriodicalId":50443,"journal":{"name":"Fisheries Research","volume":"281 ","pages":"Article 107247"},"PeriodicalIF":2.2,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143133801","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}
引用次数: 0
Using otolith δ18O to assess habitat selection and growth in young-of-the-year Arctic charr
IF 2.2 2区 农林科学
Fisheries Research Pub Date : 2025-01-01 DOI: 10.1016/j.fishres.2024.107245
M. Power , J.B. Dempson
{"title":"Using otolith δ18O to assess habitat selection and growth in young-of-the-year Arctic charr","authors":"M. Power ,&nbsp;J.B. Dempson","doi":"10.1016/j.fishres.2024.107245","DOIUrl":"10.1016/j.fishres.2024.107245","url":null,"abstract":"<div><div>Otoliths from young-of-the-year Arctic charr, captured between 1983 and 85 in the Ikarut River, Labrador, were used to determine thermal habitat use and the applicability of the ideal free distribution model as a description of the distribution of individuals between warmer and cooler water habitats. Across the growing season, otolith-derived temperatures tended to exceed river temperatures monitored at 1 m depth, indicating a preferential use of warmer waters. By the end of the growing season two thermal strategies were evident, use of warmer and cooler habitats as reflected in otolith-estimated mean thermal habitat use. There were no differences in proxy measures of fitness resulting from the different thermal habitats, suggesting young-of-the-year distributed themselves among heterogeneous thermal habitats in a manner consistent with the ideal free distribution. Results were also consistent with theories of habitat selection where individuals minimize the predation-foraging gain ratio via the “asset protection principle” suggesting that many Arctic charr maximize growth efficiency rather than growth rate. Either model suggests behavioural bias in otolith-derived estimates of thermal environments, requiring that derived temperatures must be interpreted with caution when used to infer historical conditions as they represent the portion of the habitat used and are not general indicators of environmental conditions. Nevertheless, studies of otolith temperatures provide important ecological insights into the use of available thermal habitat and point to patterns of behaviour which may become constrained as environments change.</div></div>","PeriodicalId":50443,"journal":{"name":"Fisheries Research","volume":"281 ","pages":"Article 107245"},"PeriodicalIF":2.2,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143133952","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}
引用次数: 0
Evaluating the efficacy of various types of guarding nets in minimizing bycatch in a Mediterranean trammel net fishery
IF 2.2 2区 农林科学
Fisheries Research Pub Date : 2025-01-01 DOI: 10.1016/j.fishres.2024.107244
Kostas Ganias, Sofia Papandreou
{"title":"Evaluating the efficacy of various types of guarding nets in minimizing bycatch in a Mediterranean trammel net fishery","authors":"Kostas Ganias,&nbsp;Sofia Papandreou","doi":"10.1016/j.fishres.2024.107244","DOIUrl":"10.1016/j.fishres.2024.107244","url":null,"abstract":"<div><div>Static nets, like trammel nets, may have less environmental impact than towed gear, but they often result in high discard rates. Trammel nets targeting the common cuttlefish <em>Sepia officinalis</em> in Thermaikos Gulf (N. Aegean) were shown to display a discard rate of 40.2 % with the vast majority of discarded catch consisting of invertebrate species, such as muricid gastropods, sea urchins, and spider crabs. In addition to the environmental impact, capturing some of these species can be a substantial difficulty for small-scale fishers, leading to delays in their fishing operations and damage to their gear. This research examined the effectiveness of different types of guarding nets, namely short gillnets positioned between the main trammel net and the footrope, in terms of biomass and species composition in commercial catches and discards. All tested gears significantly reduced the capture rate of crustaceans, notably spider crabs. However, the results for the other groups of organisms varied. The only gear modification that had no significant effect on cuttlefish catches was the addition of a well-rigged guarding net with a smaller mesh (20 mm instead of 40 mm). On the other hand, when the guarding net was loosely attached to the main net or had a greater mesh size, the biomass of cuttlefish and the abundance of demersal teleosts decreased. Our study showed that, despite the added cost, putting a guarding net during the period when species like crabs are at their seasonal height may benefit fishers in avoiding delays in disentanglement and damage to their fishing gear.</div></div>","PeriodicalId":50443,"journal":{"name":"Fisheries Research","volume":"281 ","pages":"Article 107244"},"PeriodicalIF":2.2,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143133963","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
Incorrect inference from size-selectivity studies due to widespread misuse of bootstrap confidence bands
IF 2.2 2区 农林科学
Fisheries Research Pub Date : 2025-01-01 DOI: 10.1016/j.fishres.2024.107225
Russell B. Millar , Matt K. Broadhurst
{"title":"Incorrect inference from size-selectivity studies due to widespread misuse of bootstrap confidence bands","authors":"Russell B. Millar ,&nbsp;Matt K. Broadhurst","doi":"10.1016/j.fishres.2024.107225","DOIUrl":"10.1016/j.fishres.2024.107225","url":null,"abstract":"<div><div>The bootstrap is now widely used in size-selectivity experiments to quantify the uncertainty in estimated absolute or relative selectivity curves. A two-level hierarchical bootstrap is commonly used, with deployments being resampled at the first level followed by resampling of individual fish at the second level. It is standard practice to construct plots of the estimated curves with an overlay of the bootstrap confidence intervals for each length, thereby forming a bootstrap confidence band. These confidence bands are routinely used to perform statistical tests, most often to test the null hypothesis that two gears have the same length-dependent selectivity and/or fishing efficiency. Using computer simulation, it is shown here that the actual Type 1 error (non-coverage) rate of the bootstrap confidence intervals can vary considerably depending on the experimental scenario. The bootstrap confidence band test was found to inflate the Type 1 error rate of the confidence intervals by a factor of about five due to the use of multiple confidence intervals in the construction of a confidence band. Moreover, the bootstrap confidence band test can have very low statistical power, as demonstrated with an example in which a permutation test has 97% power to detect a difference between two fishing gears, whereas the bootstrap confidence band test has power of just 68%. The permutation test is recommended for testing differences between the size selectivity of gears and its ease of implementation is demonstrated. The misuse of bootstrap confidence bands has recently propagated to other areas of fishing-gear selectivity research, including assessment of differences in species selectivity between gears, and this is another situation where permutation tests would be straightforward to implement.</div></div>","PeriodicalId":50443,"journal":{"name":"Fisheries Research","volume":"281 ","pages":"Article 107225"},"PeriodicalIF":2.2,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143133742","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}
引用次数: 0
Application of a delta-generalized additive model to assess the impact of environmental changes on the spatial distribution of bigeye tuna (Thunnus obesus) in the Indian Ocean
IF 2.2 2区 农林科学
Fisheries Research Pub Date : 2025-01-01 DOI: 10.1016/j.fishres.2024.107256
Supatcha Lurkpranee, Toshihide Kitakado
{"title":"Application of a delta-generalized additive model to assess the impact of environmental changes on the spatial distribution of bigeye tuna (Thunnus obesus) in the Indian Ocean","authors":"Supatcha Lurkpranee,&nbsp;Toshihide Kitakado","doi":"10.1016/j.fishres.2024.107256","DOIUrl":"10.1016/j.fishres.2024.107256","url":null,"abstract":"<div><div>This study estimated the spatial distribution of bigeye tuna (<em>Thunnus obesus</em>) in the Indian Ocean under changing environmental conditions through habitat suitability modeling. Fisheries data from the Indian Ocean Tuna Commission and environmental satellite data from COPERNICUS were used in a delta-generalized additive model approach. This involved separately modeling the probability of presence or absence using binomial logistic regression and the positive catch using lognormal distribution. Results showed that sea surface temperature, mixed layer depth, and chlorophyll-a significantly influenced the presence of bigeye tuna in the Indian Ocean, whereas sea surface height, mixed layer depth, and chlorophyll-a exerted a substantial impact on their density. Adjusted simulated environmental data from 2020 to 2100 under three climate change scenarios (SSP126, SSP245, and SSP585) from Coupled Model Intercomparison Project Phase 6 were utilized to predict the future spatial distribution pattern of bigeye tuna in the Indian Ocean. Bigeye tuna is expected to variedly shift its spatial distribution under the three different climate change scenarios, with SSP585 having the most pronounced changes. Generally, bigeye tuna is predicted to spread poleward from the equator as a result of tropicalization in the higher latitudes.</div></div>","PeriodicalId":50443,"journal":{"name":"Fisheries Research","volume":"281 ","pages":"Article 107256"},"PeriodicalIF":2.2,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143133795","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
Seasonal morphometry and extractive pressure on polychaetes Hediste diversicolor and Marphysa sanguinea from Southwest Spain
IF 2.2 2区 农林科学
Fisheries Research Pub Date : 2025-01-01 DOI: 10.1016/j.fishres.2024.107252
Leticia Medina-Ortega , Jairo Castro-Gutiérrez , Remedios Cabrera-Castro , Anyell Caderno , Francisco Hortas
{"title":"Seasonal morphometry and extractive pressure on polychaetes Hediste diversicolor and Marphysa sanguinea from Southwest Spain","authors":"Leticia Medina-Ortega ,&nbsp;Jairo Castro-Gutiérrez ,&nbsp;Remedios Cabrera-Castro ,&nbsp;Anyell Caderno ,&nbsp;Francisco Hortas","doi":"10.1016/j.fishres.2024.107252","DOIUrl":"10.1016/j.fishres.2024.107252","url":null,"abstract":"<div><div>This study aimed to investigate the morphometry, length-weight relationships and extractive activity on two commercially significant polychaete species, <em>Hediste diversicolor</em> and <em>Marphysa sanguinea</em> in the Bay of Cadiz (Southwest Spain). Due to measurement challenges with these fragile organisms, jaw length was introduced as a key morphological measure in the length-weight relationships. Specimens were collected monthly throughout 2019, totaling 942 <em>H. diversicolor</em> and 404 <em>M. sanguinea</em>. Eight morphometric variables were measured, including total length, width, right and left jaw lengths, and various weight metrics. Regression models and changepoint analyses were used to assess morphometric relationships and seasonal variations. Extraction rates were estimated through direct observation of shellfish harvesters. Results showed that the inclusion of jaw length improved the accuracy of length-weight relationships, particularly for <em>H. diversicolor</em>. Both species exhibited negative allometric growth patterns, with seasonal variations in length-weight regressions. Significant extraction rates were observed, averaging 0.85 polychaetes per minute per shellfisher. The findings highlight the need for implementing management regulations, such as control of illegal harvesters, to ensure the sustainability of these species. This study provides essential data for informed decision-making in the conservation and management of these species in the region.</div></div>","PeriodicalId":50443,"journal":{"name":"Fisheries Research","volume":"281 ","pages":"Article 107252"},"PeriodicalIF":2.2,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143133797","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
Maximizing growth, efficiency, and cost-effectiveness: Evaluating feed strategies for flathead lobsters
IF 2.2 2区 农林科学
Fisheries Research Pub Date : 2025-01-01 DOI: 10.1016/j.fishres.2024.107249
Rungkan Klahan , Kritsana Krajabthong , Krit Chaiwong
{"title":"Maximizing growth, efficiency, and cost-effectiveness: Evaluating feed strategies for flathead lobsters","authors":"Rungkan Klahan ,&nbsp;Kritsana Krajabthong ,&nbsp;Krit Chaiwong","doi":"10.1016/j.fishres.2024.107249","DOIUrl":"10.1016/j.fishres.2024.107249","url":null,"abstract":"<div><div>The study aimed to identify the most suitable feed for flathead lobsters (<em>Thenus oreintalis</em>) regarding growth performance and cost-effectiveness. Four treatments were evaluated, including sinking pellet (shrimp feed), green mussel, clam, and mackerel, with each treatment replicated three times. Wild flathead lobsters with sizes ranging from 60 to 70 g were randomly assigned to each treatment group, with five lobsters per replication. The lobsters were fed twice daily with different feeds for 90 days in a recirculating closed system. Results showed that flathead lobsters fed with green mussels had the highest growth performance and utilization while having lower feed costs and total costs than other treatments (P &lt; 0.05). The proximate analysis of flesh and exoskeleton revealed that flathead lobsters fed with sinking pellets had the highest protein percentage. In contrast, those fed with green mussels had the highest lipid and chitin percentage. Moreover, protease activity extracted from the hepatopancreases of flathead lobsters fed with green mussels exhibited the highest activity, while the amylase and lipase activity varied among groups. The chitin structure analysis using SEM, FTIR, and FTIR assays revealed that the feed pattern closely matched the optimal growth and feed utilization, including the B/C ratio, for flathead lobsters cultured in a closed system were green mussels.</div></div>","PeriodicalId":50443,"journal":{"name":"Fisheries Research","volume":"281 ","pages":"Article 107249"},"PeriodicalIF":2.2,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143133798","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
Allocating catches to species in mixed species data – A model-based approach
IF 2.2 2区 农林科学
Fisheries Research Pub Date : 2025-01-01 DOI: 10.1016/j.fishres.2024.107240
D. Parker , A.E. Punt , R.A. Deng , W.N. Venables , C.M. Dichmont , A.G. Donovan , R.A. Kenyon , T. van der Velde , M. Miller , T. Hutton
{"title":"Allocating catches to species in mixed species data – A model-based approach","authors":"D. Parker ,&nbsp;A.E. Punt ,&nbsp;R.A. Deng ,&nbsp;W.N. Venables ,&nbsp;C.M. Dichmont ,&nbsp;A.G. Donovan ,&nbsp;R.A. Kenyon ,&nbsp;T. van der Velde ,&nbsp;M. Miller ,&nbsp;T. Hutton","doi":"10.1016/j.fishres.2024.107240","DOIUrl":"10.1016/j.fishres.2024.107240","url":null,"abstract":"<div><div>Stock assessments should ideally be conducted at the species level, but this can be difficult when commercial catches are reported by species group rather than by species. This is a common problem if species are hard to identify or it is too time consuming to do so. Species split algorithms are applied in such cases. We outline a GAM-based approach for splitting species-aggregated catch and effort data to species and apply them to two species groups (tiger and endeavour prawns) in Australia’s Northern Prawn Fishery. The best models incorporate spatial, temporal and biophysical covariates, demonstrating strong explanatory power and robust performance in cross-validation tests. The results suggest that the annual split to species by location and day of the year is constant over time for the endeavour prawns. However, evidence exists for long-term trends (i.e., non-stationary) when splitting the tiger prawns. This highlights the importance of regularly updating this information.</div></div>","PeriodicalId":50443,"journal":{"name":"Fisheries Research","volume":"281 ","pages":"Article 107240"},"PeriodicalIF":2.2,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143133802","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}
引用次数: 0
What is an appropriate spatial scale for ecosystem based fishery management of kōura, spiny lobster Jasus edwardsii, in the Hauraki Gulf Marine Park, Aotearoa New Zealand?
IF 2.2 2区 农林科学
Fisheries Research Pub Date : 2025-01-01 DOI: 10.1016/j.fishres.2024.107261
Alison MacDiarmid
{"title":"What is an appropriate spatial scale for ecosystem based fishery management of kōura, spiny lobster Jasus edwardsii, in the Hauraki Gulf Marine Park, Aotearoa New Zealand?","authors":"Alison MacDiarmid","doi":"10.1016/j.fishres.2024.107261","DOIUrl":"10.1016/j.fishres.2024.107261","url":null,"abstract":"<div><div>Ecosystem based fishery management (EBFM) remains an aspiration in Aotearoa New Zealand where single species fisheries assessments at large quota management area (QMA) spatial scales are standard. This review of the available information for the spiny lobster or kōura (<em>Jasus edwardsii</em>) in the Hauraki Gulf Marine Park (part of the CRA2 QMA) indicates that the present large scale fisheries assessment violates the modelling assumption of a unit stock because of smaller scale spatial patterns of puerulus settlement, juvenile and adult movement, abundance, ecological interactions, and fishing. While EBFM at the reef scale would be consistent with the limited movement of juvenile and adult kōura among adjacent reefs, high information requirements at this small scale demand a stepped transition from the QMA scale. Assessments of the CRA2 kōura stock based on six subregions would allow the identification of routes for population rebuilding in each sub-region and the development of EBFM of kōura at scales more relevant to its biology, ecology and fisheries as well as the communities with a stake in its sustainability. Management at these scales will require using existing fine-scale data where it exists and consideration of new ways to collect the required data at a suitable spatial scale to help fill the information gaps.</div></div>","PeriodicalId":50443,"journal":{"name":"Fisheries Research","volume":"281 ","pages":"Article 107261"},"PeriodicalIF":2.2,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143133951","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
Fish ID face-off: A comparison of genetic barcoding and otolith shape analysis for streamlining species identification of mesopelagic fishes
IF 2.2 2区 农林科学
Fisheries Research Pub Date : 2025-01-01 DOI: 10.1016/j.fishres.2024.107254
Lydia N. Walton , Micah Quindazzi , Stéphane Gauthier , Catherine Stevens
{"title":"Fish ID face-off: A comparison of genetic barcoding and otolith shape analysis for streamlining species identification of mesopelagic fishes","authors":"Lydia N. Walton ,&nbsp;Micah Quindazzi ,&nbsp;Stéphane Gauthier ,&nbsp;Catherine Stevens","doi":"10.1016/j.fishres.2024.107254","DOIUrl":"10.1016/j.fishres.2024.107254","url":null,"abstract":"<div><div>Identifying fish to species level is important for fisheries research as it ensures the accuracy of catch data reported by fishing vessels and informs best management strategies for harvested taxa. Genetic methods are one of the most common techniques used for identifying fish species but can be time-consuming and costly and may lead to incorrect or incomplete identifications if genetic baselines do not exist. Visual identifications using otolith shape are an inexpensive alternative that can be used to identify large numbers of fish samples quickly and with high accuracy. The objective of this study was to compare two methods of taxonomic identification (<em>i.e.</em>, DNA barcoding of the COI-5P marker and visual identifications using body morphology, distinguishing features and otolith shape) for 240 specimens of mesopelagic fishes as they occupy a critical role in marine food webs. We also tested the effectiveness of geometric morphometrics in delineating species of mesopelagic fishes based on otolith shape. Our results showed that visual identifications agreed with genetic identifications 89 % of the time, and that both techniques were effective for identifying mesopelagic fishes. Additionally, we found that geometric morphometrics were successful in distinguishing mesopelagic fishes using otolith shape 86 % of the time. Otolith shape is a useful tool for the taxonomic identification of mesopelagic fishes in the Northeast Pacific Ocean and should be employed with higher frequency by fisheries researchers, especially in the absence of taxonomic or genetic expertise.</div></div>","PeriodicalId":50443,"journal":{"name":"Fisheries Research","volume":"281 ","pages":"Article 107254"},"PeriodicalIF":2.2,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143133984","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}
引用次数: 0
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