Fisheries Research最新文献_第3页

Exploring the use of Fourier transform near infrared spectroscopy for aging Newfoundland and Labrador Atlantic cod (Gadus morhua)

IF 2.2 2区农林科学

Fisheries Research Pub Date : 2025-03-25 DOI: 10.1016/j.fishres.2025.107331

Aaron T. Adamack , Kelly Antaya , Sudagar Dhaliwal , Karen Dwyer , Christina M. Bourne , Gillian Forbes

{"title":"Exploring the use of Fourier transform near infrared spectroscopy for aging Newfoundland and Labrador Atlantic cod (Gadus morhua)","authors":"Aaron T. Adamack , Kelly Antaya , Sudagar Dhaliwal , Karen Dwyer , Christina M. Bourne , Gillian Forbes","doi":"10.1016/j.fishres.2025.107331","DOIUrl":"10.1016/j.fishres.2025.107331","url":null,"abstract":"<div><div>Fourier transform near-infrared spectroscopy (FT-NIRS) is a new tool for aging fish otoliths which has been shown to be potentially faster than counting otolith annuli (traditional aging) while having similar accuracy and precision. We investigated the use of FT-NIRS for aging Atlantic cod (<em>Gadus morhua</em>) otoliths from North Atlantic Fisheries Organization (NAFO) Divisions 2J, 3K, 3L, 3N, 3O, and 3Ps. Two types of calibration models (partial least squares (PLS) regression and principal component analysis combined with multinomial regression) were fit between traditional age estimates for otoliths and either their full FT-NIR spectra or an informative region of their spectra. Model fits were compared across calibration model types, portion of spectra used, and between models fit to individual versus all NAFO Divisions combined. A time-cost analysis comparing traditional aging versus combinations of FT-NIRS and traditional aging was performed. Good model fits (root mean square error ≤ 1; adjusted-R<sup>2</sup> ≥ 0.85) were generally achieved for at least one calibration model fit across all NAFO Divisions and for individual Divisions. PLS and multinomial calibration model performances were very similar for models fit across all NAFO Divisions, but varied due to small sample sizes for individual Divisions. Portion of the FT-NIR spectra used to fit models had the least impact. Time-cost analysis suggested that labour savings of 23 % (6 calibration models) to 40 % (1 calibration model) could be obtained. Our results show the FT-NIRS provides reliable age estimates for Atlantic cod with similar accuracy and precision to traditional aging while also providing labour cost savings.</div></div>","PeriodicalId":50443,"journal":{"name":"Fisheries Research","volume":"285 ","pages":"Article 107331"},"PeriodicalIF":2.2,"publicationDate":"2025-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143696042","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

Optimizing per vessel hour capture efficiency for rare, heterogeneously distributed fishes: Invasive grass carp Ctenopharyngodon idella in the Sandusky River

IF 2.2 2区农林科学

Fisheries Research Pub Date : 2025-03-23 DOI: 10.1016/j.fishres.2025.107344

Robert D. Hunter , Song S. Qian , Jason L. Fischer , Ryan Brown , Lucas Nathan , John M. Dettmers , James J. Roberts , Corbin D. Hilling , Matthew R. Acre , Robert Mapes , Ryan Young , Christine M. Mayer

{"title":"Optimizing per vessel hour capture efficiency for rare, heterogeneously distributed fishes: Invasive grass carp Ctenopharyngodon idella in the Sandusky River","authors":"Robert D. Hunter , Song S. Qian , Jason L. Fischer , Ryan Brown , Lucas Nathan , John M. Dettmers , James J. Roberts , Corbin D. Hilling , Matthew R. Acre , Robert Mapes , Ryan Young , Christine M. Mayer","doi":"10.1016/j.fishres.2025.107344","DOIUrl":"10.1016/j.fishres.2025.107344","url":null,"abstract":"<div><div>Natural resources management is often concerned with conserving rare-native or controlling rare-invasive fishes. Informing and assessing conservation and control efforts frequently requires information from captures. When little is understood about spatial and temporal fish distributions, captures can be infrequent and costly. If successful management depends on effective management response, optimizing for efficiency may be the difference between success and failure. We compared per vessel hour capture efficiencies for invasive grass carp (<em>Ctenopharyngodon idella</em>) between two methods: electrofishing-only (electrofishing) and in combination with a trammel net (combination). Capture and effort information including 174 captures from 1853 capture attempts from 1706 total hours of effort in the Sandusky River, OH, USA from 2020–2023 was used to fit a generalized linear model. Captures were allowed to vary by river kilometer, month, and year to account for unequal capture rates and effort. Captures were offset by total vessel hours or the count of independent efforts to compare methods that prioritize detection at a single location (e.g., combination) to methods that prioritize exploiting more locations (e.g., electrofishing). Including trammel nets was intended to increase single site detection, but we found that electrofishing-only was at least 2.4x more efficient (catch per vessel hour) than when combined with a trammel net with no significant difference in catch per removal effort. Complex methods intended to increase single site detection may reduce the number of efforts completed. Therefore, overall capture efficiency and total capture numbers for rare fish may be increased through methods that prioritize per-hour efficiency.</div></div>","PeriodicalId":50443,"journal":{"name":"Fisheries Research","volume":"285 ","pages":"Article 107344"},"PeriodicalIF":2.2,"publicationDate":"2025-03-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143685506","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

Derivation of a standardized index to explore spatial, seasonal and between-year variation of squid (Loligo spp.) abundance in the English Channel 推导标准化指数以探索英吉利海峡鱿鱼（Loligo spp.）丰度的空间、季节和年际变化

IF 2.2 2区农林科学

Fisheries Research Pub Date : 2025-03-22 DOI: 10.1016/j.fishres.2025.107333

Anna Marcout , Eric Foucher , Graham Pierce , Jean-Paul Robin

{"title":"Derivation of a standardized index to explore spatial, seasonal and between-year variation of squid (Loligo spp.) abundance in the English Channel","authors":"Anna Marcout , Eric Foucher , Graham Pierce , Jean-Paul Robin","doi":"10.1016/j.fishres.2025.107333","DOIUrl":"10.1016/j.fishres.2025.107333","url":null,"abstract":"<div><div>Long-finned squids are among the valuable resources exploited by English Channel demersal fisheries. This resource consists of two short-lived species (not distinguished in landings): <em>Loligo forbesii</em> and <em>Loligo vulgaris</em>, which differ in the timing of their life cycle. In the present study, we investigated spatial, seasonal and long-term biomass variation of <em>Loligo</em> spp. in the English Channel using 22 years (2000–2021) of commercial fishing data to compute biomass indices. Results indicated that landing per unit of effort (LPUE) indices (computed per month for each statistical rectangle of the English Channel), standardized by vector autoregressive spatio-temporal (VAST) method, provided an appropriate squid biomass estimator. Two distinct geographical patterns were observed in the English Channel, with low and stable biomass indices in the West and most of the fluctuations and seasonal variations in East. Within each year, the observed increase in abundance in June is likely to correspond to the recruitment of the loliginid squid into the fishery. Abundance typically rises from June to December and then gradually decreases from January to May. Over the 22-year series there has been an eastward shift in squid biomass since 2014. This information is valuable for fishers but also to manage fisheries, as it offers potential indices of squid availability to the fisheries and a direct quantification of loliginid biomass variability in the ecosystem.</div></div>","PeriodicalId":50443,"journal":{"name":"Fisheries Research","volume":"285 ","pages":"Article 107333"},"PeriodicalIF":2.2,"publicationDate":"2025-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143685504","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

Using highest density intervals can reduce perceived uncertainty in stock assessments

IF 2.2 2区农林科学

Fisheries Research Pub Date : 2025-03-22 DOI: 10.1016/j.fishres.2025.107326

Andrew M. Edwards , Marie Auger-Méthé

{"title":"Using highest density intervals can reduce perceived uncertainty in stock assessments","authors":"Andrew M. Edwards , Marie Auger-Méthé","doi":"10.1016/j.fishres.2025.107326","DOIUrl":"10.1016/j.fishres.2025.107326","url":null,"abstract":"<div><div>Sustainably managed fisheries provide conservation and socio-economic benefits. To set catch quotas, decision makers are guided by stock assessments that use mathematical models to make quantitative predictions of how populations will change under different management scenarios. Stock assessments need to communicate uncertainty of estimated quantities, which is often done through figures and tables depicting credible or confidence intervals. We show that computing such intervals with the usual equal-tailed approach has undesirable consequences, such as excluding highly probable values yet including relatively improbable values. This can give an overly optimistic impression of the health of fish stocks, with potential unexpected management implications. Instead, using highest density intervals can resolve these problems, resulting in narrower intervals that reduce perceived uncertainty (by <span><math><mo>></mo></math></span>3 billion fish for a recent cohort of Pacific Hake, <em>Merluccius productus</em>, for example). Therefore, we recommend consideration of highest density intervals in fisheries applications and other fields to better characterize uncertainty and improve conservation advice. We introduce our new R package, hdiAnalysis, which enhances previous methods to encourage and facilitate uptake by practitioners.</div></div>","PeriodicalId":50443,"journal":{"name":"Fisheries Research","volume":"285 ","pages":"Article 107326"},"PeriodicalIF":2.2,"publicationDate":"2025-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143685505","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

Associations between body condition and seasonal freshwater outflow in a coastal marine fish (Protonibea diacanthus) in the wet-dry tropics of northern Australia

IF 2.2 2区农林科学

Fisheries Research Pub Date : 2025-03-21 DOI: 10.1016/j.fishres.2025.107343

Jo Randall , Hayden T. Schilling , Brendan Adair , Dion Wedd , Alison King , Thor Saunders , David Crook

{"title":"Associations between body condition and seasonal freshwater outflow in a coastal marine fish (Protonibea diacanthus) in the wet-dry tropics of northern Australia","authors":"Jo Randall , Hayden T. Schilling , Brendan Adair , Dion Wedd , Alison King , Thor Saunders , David Crook","doi":"10.1016/j.fishres.2025.107343","DOIUrl":"10.1016/j.fishres.2025.107343","url":null,"abstract":"<div><div>Coastal tropical fisheries can be profoundly affected by freshwater flows, with hydrological variability influencing the quality and quantity of nutrition available to marine consumers, and shaping key biological processes such as recruitment, growth and population productivity. In this study, we examined a range of condition metrics (Fulton’s Condition Factor, RNA:DNA, lipid content, gonado-somatic index (GSI), hepato-somatic index (HSI)) from sampled fish to examine the drivers of population productivity and individual health of the commercially important Sciaenid fish, the black-spotted croaker, <em>Protonibea diacanthus,</em> in the wet-dry tropics of northern Australia. The results showed strong seasonal variation in body condition metrics, with a broad trend for lower body condition, HSI and RNA:DNA, and higher tissue water content in the wet season (Dec-Mar) than in the dry (May-Jul) and ‘build-up’ (Sep-Nov) seasons. These results contrast with findings for other key fishery species in the region whose health and condition respond positively to high rainfall and river discharge during strong monsoonal wet seasons. This study cautions the use of broad conclusions about the importance of linkages between freshwater outflows and coastal fishery productivity, without considering spatial and species-specific responses to seasonal variability.</div></div>","PeriodicalId":50443,"journal":{"name":"Fisheries Research","volume":"285 ","pages":"Article 107343"},"PeriodicalIF":2.2,"publicationDate":"2025-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143685502","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

Representative sampling by fishers in a reference fleet programme

IF 2.2 2区农林科学

Fisheries Research Pub Date : 2025-03-21 DOI: 10.1016/j.fishres.2025.107342

Tom L. Clegg

{"title":"Representative sampling by fishers in a reference fleet programme","authors":"Tom L. Clegg","doi":"10.1016/j.fishres.2025.107342","DOIUrl":"10.1016/j.fishres.2025.107342","url":null,"abstract":"<div><div>Fisheries catch sampling is often done using non-probabilistic methods to tackle the operationally challenging sampling environment, but where the sampler must judge whether the sample is representative, there is a risk of intentional or unintentional biases being introduced. In this study, I investigate potential biases in sampling by fishers in the Norwegian Reference Fleet. Biases in haul selection were identified by modelling the effect of available covariates on sampling probability using mandatory catch logbooks as a census dataset. The model detected small biases in haul selection, favouring larger catches which are more representative of typical catch sizes in the fishery, and larger variations in sampling probability during daylight, which is partly driven by the availability of the sampler because of shift patterns. Biases in sub-sampling of fish was investigated by comparing length frequency distributions with monitoring, control, and surveillance inspections, revealing marginally larger proportions of undersized fish in Norwegian Reference Fleet sampling. In conclusion, there is no evidence of either convenience sampling or intentional manipulation of sampling. Rather, deviations from random sampling were small and isolated to individual vessels, suggesting that targeted feedback would be effective for improving future sampling.</div></div>","PeriodicalId":50443,"journal":{"name":"Fisheries Research","volume":"285 ","pages":"Article 107342"},"PeriodicalIF":2.2,"publicationDate":"2025-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143685503","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

Fishery biology of the Crevalle jack Caranx hippos (L) from the Colombian Caribbean

IF 2.2 2区农林科学

Fisheries Research Pub Date : 2025-03-19 DOI: 10.1016/j.fishres.2025.107334

Carlos Pacheco , José Cusba , Carlos Bustamante

{"title":"Fishery biology of the Crevalle jack Caranx hippos (L) from the Colombian Caribbean","authors":"Carlos Pacheco , José Cusba , Carlos Bustamante","doi":"10.1016/j.fishres.2025.107334","DOIUrl":"10.1016/j.fishres.2025.107334","url":null,"abstract":"<div><div>The crevalle jack <em>Caranx hippos</em> is a significant fishery resource in the Caribbean Sea; however, biological information necessary for its effective management is currently lacking. To address this gap, this study conducted an integrated multiannual analysis of fishery-dependent data on the size structure, maturity, and spatiotemporal dynamics of landings in six Colombian Caribbean regions. This study found that encircling gillnets, drift gillnets, and seine nets yielded a higher catch in terms of mass, whereas handlines, encircling gillnets, and fixed gillnets captured small and immature specimens. These practices, which affect both adult and immature populations, appear to pose a significant threat to stock health, highlighting the need for preventive approaches to fishery management in Colombian waters. Additionally, the results revealed sexual dimorphism, with females being smaller than males, and the size at maturity of females was estimated at 54.2 cm <em>L</em><sub>T</sub> (81 % immature and 19 % mature). Furthermore, this study recorded annual fluctuations in the number of landed specimens at all sites, with La Guajira in the northeastern area of the Colombian Caribbean and Atlántico in the southwest area showing the highest values. The findings suggest a decrease in the size at maturity of <em>C. hippos</em> over a span of ten years, with an average reduction of 2.25 cm <em>L</em><sub>T</sub> per year, in response to fishing pressure. In addition, spatiotemporal factors that affect fleet operations play a key role in these fluctuations. This study emphasises the need to adopt comprehensive approaches to improve our understanding of the reproductive dynamics of crevalle jack stocks to ensure the sustainability of artisanal fishing.</div></div>","PeriodicalId":50443,"journal":{"name":"Fisheries Research","volume":"285 ","pages":"Article 107334"},"PeriodicalIF":2.2,"publicationDate":"2025-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143643722","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

Trends and drivers of French tropical tuna purse-seine vessel behavior in the Atlantic and Indian Oceans, 2004–2020

IF 2.2 2区农林科学

Fisheries Research Pub Date : 2025-03-17 DOI: 10.1016/j.fishres.2025.107330

Wencheng Lau-Medrano , Daniel Gaertner , Francis Marsac , David M. Kaplan

{"title":"Trends and drivers of French tropical tuna purse-seine vessel behavior in the Atlantic and Indian Oceans, 2004–2020","authors":"Wencheng Lau-Medrano , Daniel Gaertner , Francis Marsac , David M. Kaplan","doi":"10.1016/j.fishres.2025.107330","DOIUrl":"10.1016/j.fishres.2025.107330","url":null,"abstract":"<div><div>This study examines the spatio-temporal trends in fishing practices at the fishing trip scale of the French tropical tuna purse-seine fleet in the Indian and Atlantic Oceans on 17 years, focusing on trends in fishing on free-swimming schools (FSC) versus fishing on floating objects (FOBs). Key metrics, such as trip duration, median speed, sinuosity, area explored and the fraction of sets of FOBs, were calculated to quantify fishing trip patterns, and a PCA analysis was conducted to explore relationships between these metrics. Our findings show a marked shift towards FOB fishing, likely driven by advancements in tracking technology, which have improved fishing efficiency and reduced search time, and changes in regulations and fishing context, which have provided unintentional incentives for FOB fishing. The data reveal distinct trends between oceans, with shorter fishing trips and a higher rate of FOB fishing in the Indian Ocean, likely linked to recent increases in skipjack tuna abundance and catch limits on yellowfin tuna in that ocean. Temporal changes in fishing trip metrics suggest that the key factors influencing fishing strategies include oceanographic variability, management regulations, and socio-economic conditions like piracy and fuel costs. Our analysis provides critical insights into how technological innovations and environmental factors shape fishing strategies, contributing to the sustainable management of tuna fisheries.</div></div>","PeriodicalId":50443,"journal":{"name":"Fisheries Research","volume":"285 ","pages":"Article 107330"},"PeriodicalIF":2.2,"publicationDate":"2025-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143637103","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

Elasmobranch research in the Mediterranean Sea: What is known, what is not, how it changed, and where it needs to go

IF 2.2 2区农林科学

Fisheries Research Pub Date : 2025-03-17 DOI: 10.1016/j.fishres.2025.107328

Lydia Koehler

{"title":"Elasmobranch research in the Mediterranean Sea: What is known, what is not, how it changed, and where it needs to go","authors":"Lydia Koehler","doi":"10.1016/j.fishres.2025.107328","DOIUrl":"10.1016/j.fishres.2025.107328","url":null,"abstract":"<div><div>The analysis of 1212 research contributions across 22 coastal states offers insights into how Mediterranean countries contributed to knowledge on elasmobranchs in the period between 1932 and 2020. During this time, research on elasmobranch species has steadily increased, yet research efforts across countries varied, with European Union (EU) Member States generally being involved in more publications than other countries in the region. The consideration of elasmobranchs in international law and regional frameworks seems to have driven this growth, and more researchers started to focus on these species. A total of 301 Mediterranean entities, mostly universities (44.5 %), contributed to research on elasmobranchs regionally, with 95 of them having published regularly. A trend in the application of non-lethal methods was noted, although fisheries-dependent data remains an important source of information. Research on the biology, ecology, taxonomy, pollution (contamination), and the fishing of elasmobranchs have been consistent subjects in this field, while other topics such as ‘conservation and management measures’ and ‘shark meat trade and consumption’ have increased in recent years. However, gaps in knowledge on policy implementation and important areas remain.</div></div>","PeriodicalId":50443,"journal":{"name":"Fisheries Research","volume":"285 ","pages":"Article 107328"},"PeriodicalIF":2.2,"publicationDate":"2025-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143637104","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

500 years of the once largest fishery in the world: A comprehensive catch reconstruction for the Newfoundland cod fishery (1508–2023)

IF 2.2 2区农林科学

Fisheries Research Pub Date : 2025-03-13 DOI: 10.1016/j.fishres.2025.107325

Patrick Hayes , Poul Holm , John Nicholls

引用次数: 0