Marine and Coastal Fisheries最新文献

{"title":"Reviewer acknowledgments","authors":"","doi":"10.1002/mcf2.10326","DOIUrl":"https://doi.org/10.1002/mcf2.10326","url":null,"abstract":"<p>The editors and editorial board thank the following people who contributed technical reviews of manuscripts submitted to <i>Marine and Coastal Fisheries: Dynamics, Management, and Ecosystem Science</i> during the year ending November 30, 2024.</p><p>Cameron Ainsworth</p><p>Robert Allman</p><p>Joel Anderson</p><p>Chryssanthi Antoniadou</p><p>Iraide Artetxe</p><p>Ashley Baer</p><p>Ron Baker</p><p>Arthur Bass</p><p>Mark Belk</p><p>David Belkoski</p><p>Timothy Bonvechio</p><p>Christopher Bowser</p><p>Sandra Brooke</p><p>Deirdre Brophy</p><p>Ian Brosnan</p><p>Andre Buchheister</p><p>Sarah Burnsed</p><p>Mathew Callahan</p><p>Matthew Campbell</p><p>Toni Chute</p><p>Patricia Clay</p><p>Benjamin Clemens</p><p>Scott Colborne</p><p>Mary Conner</p><p>Jason Cope</p><p>Timothy Copeland</p><p>Alberto Correia</p><p>Jose L. Costa</p><p>Chelsey Crandall</p><p>Adam Delargy</p><p>B. S. Dias</p><p>Karim Erzini</p><p>Fahmi Fahmi</p><p>Jessica Farley</p><p>Megan Feddern</p><p>Adam Fox</p><p>Katherine Gallagher</p><p>Scott George</p><p>Yi Gong</p><p>Steve Haeseker</p><p>Silje Halvorsen</p><p>Jon Hess</p><p>Andrij Z. Horodysky</p><p>Challen Hyman</p><p>Naoto Ishikawa</p><p>Matthew Kendall</p><p>Nikolai Klibansky</p><p>Kathy Kuletz</p><p>Katie Lankowicz</p><p>Laura Lee</p><p>Janice Leriorato</p><p>Douglas Lipton</p><p>Lenore Litherland</p><p>Allie Litmer</p><p>Marisa Litz</p><p>Mark Lomeli</p><p>Silvia Lourenco</p><p>Zhenling Ma</p><p>Marvin Mace</p><p>Tyson Martin</p><p>Filipe Martinho</p><p>Juan Molina</p><p>Jonathan Moore</p><p>Greg Moyer</p><p>Hannah Murphy</p><p>Elizabeth Ng</p><p>Matthew Ogburn</p><p>Kiva Oken</p><p>Zachary Olsen</p><p>Miguel Olvera-Novoa</p><p>Tyler Pavlowitch</p><p>Quinn Payton</p><p>Patrick Polte</p><p>Maite Pons</p><p>Brandon Puckett</p><p>Bernardo R. Quintella</p><p>Jaime A. Ramos</p><p>Kate Richerson</p><p>Leena Riekkola</p><p>Craig Rose</p><p>Winifred Ryan</p><p>Shaye Sable</p><p>Skyler Sagarese</p><p>Peter Sakaris</p><p>Jessica Sameoto</p><p>Jorge Santos</p><p>Weiteng Shen</p><p>Weili Shi</p><p>Emily Slesinger</p><p>Michelle Sluis</p><p>Geoffrey Smith</p><p>Jasmine Somerville</p><p>Bryce Stewart</p><p>Gretchen Stokes</p><p>Matthew Streich</p><p>Justin Suca</p><p>Genoa Sulloway</p><p>Daniel Swadling</p><p>Eric Thunberg</p><p>Nick Tolimieri</p><p>Alison Towner</p><p>Jorge Trejo-Martínez</p><p>Andre Uychiaoco</p><p>Quang Van Nguyen</p><p>Matthew Vincent</p><p>Johanna Vollenweider</p><p>Alejandra V. Volpedo</p><p>John Walter</p><p>Chantell R. Wetzel</p><p>Alan Whitfield</p><p>John Wiedenmann</p><p>Kyle Williams</p>","PeriodicalId":51257,"journal":{"name":"Marine and Coastal Fisheries","volume":"16 6","pages":""},"PeriodicalIF":1.8,"publicationDate":"2025-01-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/mcf2.10326","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143112294","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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":"Trophic level influences larval Shortbelly Rockfish development","authors":"Garfield T. Kwan,&nbsp;Kamran A. Walsh,&nbsp;Andrew R. Thompson,&nbsp;Noah J. Ben-Aderet,&nbsp;H. William Fennie,&nbsp;Brice X. Semmens,&nbsp;Rasmus Swalethorp","doi":"10.1002/mcf2.10319","DOIUrl":"https://doi.org/10.1002/mcf2.10319","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> Objective</h3>\u0000 \u0000 <p>Early life success of fishes is considered one of the most important drivers of recruitment to adult populations, and elucidating the governing mechanisms is important for management efforts. Many hypotheses over the past century have been proposed to explain recruitment fluctuation, with the recently postulated Trophic Efficiency in Early Life (TEEL) hypothesis arguing that a shorter food chain length equals greater energy transfer efficiency from primary producers to larval fishes, thereby reducing early-life mortality and ultimately leading to stronger recruitment. Under TEEL it would then be assumed that feeding low in the food chain would improve growth and body condition, as these are often shown to be associated with increased survival in larval fishes. The objective of this study was to test this aspect of the TEEL hypothesis by quantifying condition, growth, and trophic level of larval Shortbelly Rockfish <i>Sebastes jordani</i> collected by the California Cooperative Oceanic Fisheries Investigations program and archived at the Ichthyoplankton Collection.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Methods</h3>\u0000 \u0000 <p>The trophic level on larval Shortbelly Rockfish was assessed with compound-specific isotopic analysis of amino acids. Their size at age and survival were estimated with otolith microstructure. Their diet was examined through stomach content analysis.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Result</h3>\u0000 \u0000 <p>Observations indicate that larvae consuming prey at a lower trophic level have greater body weight and exhibit faster growth rates. However, feeding at a lower trophic level did not influence body length. The ingested prey responsible for the lower trophic level within larval rockfish could not be determined.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Conclusion</h3>\u0000 \u0000 <p>Larval Shortbelly Rockfish consuming prey at a lower trophic level garnered greater body weight and exhibited faster growth rates and provides support for the TEEL hypothesis. However, further research is needed to identify the preferred prey(s) responsible for the more efficient energy transfer.</p>\u0000 </section>\u0000 </div>","PeriodicalId":51257,"journal":{"name":"Marine and Coastal Fisheries","volume":"16 6","pages":""},"PeriodicalIF":1.8,"publicationDate":"2025-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/mcf2.10319","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143110808","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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":"Stock-specific spatial overlap among seabird predators and Columbia River juvenile Chinook Salmon suggests a mechanism for predation during early marine residence","authors":"Jeannette E. Zamon,&nbsp;Nick Tolimieri,&nbsp;Brandon E. Chasco,&nbsp;Mary E. Hunsicker,&nbsp;Donald M. Van Doornik,&nbsp;Brian J. Burke,&nbsp;David J. Teel,&nbsp;Elizabeth M. Phillips","doi":"10.1002/mcf2.10318","DOIUrl":"https://doi.org/10.1002/mcf2.10318","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> Objective</h3>\u0000 \u0000 <p>Because predation is thought to be the primary source of natural mortality for juvenile salmon first entering the ocean, we sought to identify regions where, on average, stock-specific spatial overlap between the distribution of threatened and endangered juvenile Chinook Salmon <i>Oncorhynchus tshawytscha</i> and abundant fish-eating seabirds (common murres <i>Uria aalge</i> and sooty shearwaters <i>Ardenna grisea</i>) suggests the greatest potential for ocean predation risk to juvenile Chinook Salmon.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Methods</h3>\u0000 \u0000 <p>The relative abundance and spatial distribution of seabird predators and juvenile Chinook Salmon were quantified as part of long-term ecosystem surveys during May 2003–2012 and June 2003–2022. Genetic stock identification methods were used to assign individual fish to their respective stock groups. Stock-specific species distribution models then generated maps and indices of average annual spatial overlap between predators and prey within the survey area.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Result</h3>\u0000 \u0000 <p>There is unequivocal evidence for spatial overlap between common murres, sooty shearwaters, and five genetic groups of interior and lower Columbia River juvenile Chinook Salmon. We found strongly positive (≥0.70) spatial correlations between predator and prey densities in both May and June, although spatial overlap was, in general, greater during May. The region of highest spatial overlap occurred on the inner continental shelf between the Columbia River mouth (46.2°N) and Grays Harbor (47.0°N), a region at the beginning of the juvenile salmon migratory pathway that is strongly affected by freshwater outflow from the river.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Conclusion</h3>\u0000 \u0000 <p>Our findings support the idea that ocean avian predation during early marine residence has the potential to affect marine survival of juvenile Chinook Salmon and should be further investigated to better inform and implement ecological models and possible recovery actions for Chinook Salmon populations of the Columbia River basin.</p>\u0000 </section>\u0000 </div>","PeriodicalId":51257,"journal":{"name":"Marine and Coastal Fisheries","volume":"16 6","pages":""},"PeriodicalIF":1.8,"publicationDate":"2024-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/mcf2.10318","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143121369","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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":"Evaluating the impact of tuna purse-seine fishing under fish aggregating devices and free schools on Little Tunny in the Northeast Atlantic Ocean: Implications using length-based methods","authors":"Komba Jossie Konoyima,&nbsp;Jiangfeng Zhu,&nbsp;Richard Kindong","doi":"10.1002/mcf2.10314","DOIUrl":"https://doi.org/10.1002/mcf2.10314","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> Objective</h3>\u0000 \u0000 <p>Little Tunny <i>Euthynnus alletteratus</i> is a commercially viable species, and its research has been prioritized by the International Commission for the Conservation of Atlantic Tunas. This study aimed to evaluate the stock status of Little Tunny in the Northeast Atlantic Ocean, the effectiveness of the life history priors, and the sensitivity of the model's predicted reference points to prior misspecification. The findings could help reduce uncertainties regarding the state of Little Tunny in the region.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Methods</h3>\u0000 \u0000 <p>We used empirically estimated life history parameters and purse-seine fish aggregating device (FAD) and free school fishing length-frequency data from 2000 to 2021, available in the International Commission for the Conservation of Atlantic Tunas database. We applied the length-based Bayesian biomass (LBB) and length-based spawning potential ratio assessment methods.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Result</h3>\u0000 \u0000 <p>The LBB's outputs indicate that Little Tunny was grossly overfished at the exerted fishing pressure. This was corroborated by length-based spawning potential ratio estimates of low spawning per recruit for the stock exploited by purse seines under FAD and free school sets. The reference points of both models were most sensitive to asymptotic length (<i>L</i>_∞) prior misspecification, and including life history priors in LBB produced a narrower confidence interval of the estimated reference points.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Conclusion</h3>\u0000 \u0000 <p>The Northeast Atlantic Ocean Little Tunny fishery exploited by purse-seine fisheries under FAD and free school sets may be unsustainable. We maintain that user priors could reduce uncertainty in LBB, whereas accurate specification of priors, particularly <i>L</i>_∞, is required to have less biased results using the models. We recommend catch limits through, for instance, spatial closures, but caution is advised due to uncertainty in this study's life history priors.</p>\u0000 </section>\u0000 </div>","PeriodicalId":51257,"journal":{"name":"Marine and Coastal Fisheries","volume":"16 6","pages":""},"PeriodicalIF":1.8,"publicationDate":"2024-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/mcf2.10314","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143121370","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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":"Do sustainable development goals (SDGs) boost green productivity in national marine fisheries? International evidence","authors":"Kieu-Thi Phan,&nbsp;Yu-Lung Hsu,&nbsp;Sheng-Hung Chen","doi":"10.1002/mcf2.10322","DOIUrl":"https://doi.org/10.1002/mcf2.10322","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> Objective</h3>\u0000 \u0000 <p>This study examines the determinants of green total factor productivity in marine fisheries, considering the role of Sustainable Development Goal 14 (SDG 14) in promoting sustainable marine resource utilization and conservation.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Methods</h3>\u0000 \u0000 <p>This study employs panel data from 57 countries between 2001 and 2021 to estimate efficiency scores through the directional distance function and the Malmquist–Luenberger model by incorporating inputs (labor, fishing vessels, and energy consumption) and outputs (gross ocean product and carbon dioxide emissions). A truncated regression analysis is conducted to explore the relationship between SDG 14 and green total factor productivity (GTFP) while controlling for financial resources and macroeconomic indicators.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Result</h3>\u0000 \u0000 <p>The findings indicate that SDG 14 significantly enhances both constant returns to scale (CRS) technical efficiency and variable returns to scale (VRS) pure technical efficiency, underscoring the importance of marine conservation and sustainable resource management. Additionally, financial resources (like green lending and government investment), research and innovation (like research and development, the number of researchers, and foreign funds), and macroeconomic factors (like the gross ocean product, gross domestic product, and inflation) positively influence green productivity.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Conclusion</h3>\u0000 \u0000 <p>The results underscore the importance of marine conservation and sustainable practices for enhancing GTFP in fisheries. Integrated policies focusing on financial investment, innovation, and macroeconomic stability are essential to achieve greater sustainability and efficiency in this sector.</p>\u0000 </section>\u0000 </div>","PeriodicalId":51257,"journal":{"name":"Marine and Coastal Fisheries","volume":"16 6","pages":""},"PeriodicalIF":1.8,"publicationDate":"2024-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/mcf2.10322","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143121371","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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":"Stock identification and age prediction of Red Mullet Mullus barbatus in the western Black Sea (Türkiye) as inferred from otolith shape descriptors","authors":"Taner Yildiz,&nbsp;Nurdan Cömert,&nbsp;Abdullah E. Kahraman,&nbsp;F. Saadet Karakulak","doi":"10.1002/mcf2.10316","DOIUrl":"https://doi.org/10.1002/mcf2.10316","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> Objective</h3>\u0000 \u0000 <p>In this study, we applied shape analysis to differentiate two Red Mullet <i>Mullus barbatus</i> stocks in the western Black Sea and assessed the generalized linear model (GLM) for age prediction based on otolith dimensions and weight.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Methods</h3>\u0000 \u0000 <p>Sagittal otoliths from 259 fish were collected by commercial bottom trawl vessels in İğneada and Şile, Türkiye, between October 2017 and April 2018. Otolith shape was described using wavelet transformation (contour shape) along with four morphometric characteristics (otolith length, area, width, and perimeter) and six shape indices (circularity, rectangularity, form factor, roundness, ellipticity, and aspect ratio) to reveal differences between the two regions. Shape indices were explored using multivariate statistical methods, including multivariate analysis of variance (MANOVA) and canonical discriminant analysis (CDA). Canonical analysis of principal coordinates (CAP) provided an overview of the differentiation in the otolith outline shape between the two stocks by using the wavelet coefficients. The GLMs predicted age using otolith size parameters, shape indices, and otolith weight.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Result</h3>\u0000 \u0000 <p>The MANOVA showed no significant differences between sexes but notable differences between right and left otoliths. The CDA achieved a discrimination rate of 65.7% for age 1 and 64.8% for age 3, indicating distinct local populations. The otolith contours varied between Red Mullet sampled in the two regions, with CAP achieving an overall accuracy of 67.1% for both regions, 68.12% accuracy for İğneada, and 66.20% accuracy for Şile. The GLMs identified otolith length, weight, width, and perimeter and fish sex as key factors, with otolith length being the most significant predictor for age estimation.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Conclusion</h3>\u0000 \u0000 <p>The close alignment of observed and estimated ages highlights the potential for using otolith length in age estimation.</p>\u0000 </section>\u0000 </div>","PeriodicalId":51257,"journal":{"name":"Marine and Coastal Fisheries","volume":"16 6","pages":""},"PeriodicalIF":1.8,"publicationDate":"2024-12-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/mcf2.10316","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143119256","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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":"Age, growth, maturity, and mortality of an understudied Gray Snapper fishery from the north-central Gulf of Mexico","authors":"Edward S. M. Kim,&nbsp;Justin C. McDonald,&nbsp;Laia Muñoz-Abril,&nbsp;J. Marcus Drymon,&nbsp;Mark A. Albins,&nbsp;Sean P. Powers","doi":"10.1002/mcf2.10324","DOIUrl":"https://doi.org/10.1002/mcf2.10324","url":null,"abstract":"&lt;div&gt;\u0000 \u0000 \u0000 &lt;section&gt;\u0000 \u0000 &lt;h3&gt; Objective&lt;/h3&gt;\u0000 \u0000 &lt;p&gt;Gray Snapper &lt;i&gt;Lutjanus griseus&lt;/i&gt; constitute a significant recreational fishery and minor commercial fishery throughout the Gulf of Mexico. The overall stock appears healthy based on the results of the most recent assessment; in fact, shifting climate conditions have led to range expansions and subsequent population growth in the north-central Gulf of Mexico, a region for which the full suite of basic biological data is currently lacking for this species. This work presents the results of a comprehensive study on the age, growth, maturity, and mortality of Gray Snapper in Alabama and Mississippi waters.&lt;/p&gt;\u0000 &lt;/section&gt;\u0000 \u0000 &lt;section&gt;\u0000 \u0000 &lt;h3&gt; Methods&lt;/h3&gt;\u0000 \u0000 &lt;p&gt;From 2011 to 2021, otoliths (&lt;i&gt;n&lt;/i&gt; = 886) and gonads (&lt;i&gt;n&lt;/i&gt; = 364) were sampled and processed according to standard microscopic techniques. Age data were used to fit three separate growth functions and derive estimates of total, natural, and fishing mortality, while testes and ovaries were categorized by reproductive phase to determine maturity at length and age.&lt;/p&gt;\u0000 &lt;/section&gt;\u0000 \u0000 &lt;section&gt;\u0000 \u0000 &lt;h3&gt; Result&lt;/h3&gt;\u0000 \u0000 &lt;p&gt;Ages ranged from 0 to 27 years, representing one of the most comprehensive collections across published studies to date. Sex-specific growth curves constructed using the von Bertalanffy growth function were preferred over the Gompertz and logistic models based on Akaike information criterion and suggest that males reach a higher mean asymptotic length &lt;span&gt;&lt;/span&gt;&lt;math&gt;\u0000 &lt;semantics&gt;\u0000 &lt;mrow&gt;\u0000 &lt;mfenced&gt;\u0000 &lt;mrow&gt;\u0000 &lt;msub&gt;\u0000 &lt;mi&gt;L&lt;/mi&gt;\u0000 &lt;mi&gt;t&lt;/mi&gt;\u0000 &lt;/msub&gt;\u0000 &lt;mo&gt;=&lt;/mo&gt;\u0000 &lt;mn&gt;731.52&lt;/mn&gt;\u0000 &lt;mfenced&gt;\u0000 &lt;mrow&gt;\u0000 &lt;mn&gt;1&lt;/mn&gt;\u0000 &lt;mo&gt;−&lt;/mo&gt;\u0000 &lt;msup&gt;\u0000 &lt;mi&gt;e&lt;/mi&gt;\u0000 &lt;mrow&gt;\u0000 &lt;mo&gt;−&lt;/mo&gt;\u0000 &lt;mn&gt;0.15&lt;/mn&gt;\u0000 &lt;mfenced&gt;\u0000 &lt;mrow&gt;\u0000 &lt;mi&gt;t&lt;/mi&gt;\u0000 &lt;mo&gt;+&lt;/mo&gt;\u0000 &lt;mn&gt;1.34&lt;/mn&gt;\u0000 &lt;/mr","PeriodicalId":51257,"journal":{"name":"Marine and Coastal Fisheries","volume":"16 6","pages":""},"PeriodicalIF":1.8,"publicationDate":"2024-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/mcf2.10324","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142861800","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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":"Acoustic-tagged American Shad utilize historic habitat following dam removal in northern Delaware","authors":"Rachel E. Roday,&nbsp;Ian A. Park,&nbsp;Johnny E. Moore,&nbsp;Randy J. Feris Serrano,&nbsp;Dewayne A. Fox,&nbsp;Edward A. Hale","doi":"10.1002/mcf2.10323","DOIUrl":"https://doi.org/10.1002/mcf2.10323","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> Objective</h3>\u0000 \u0000 <p>The anadromous American Shad <i>Alosa sapidissima</i>, a once commercially important species in the mid-Atlantic region, experienced population declines due to overfishing, poor water quality, and impediments to accessing freshwater spawning habitat. Efforts at the regional and national scale substantially addressed the former two obstacles to facilitate population growth, but dam modifications or removal are still ongoing. In 2019, the state of Delaware removed the first barrier to anadromous fish passage on the Brandywine River (a tributary of the Delaware River), Dam 1.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Methods</h3>\u0000 \u0000 <p>A total of 24 American Shad were surgically tagged with acoustic transmitters from 2021 to 2022 above recently removed Dam 1 and tracked in the Delaware River estuary and coastal waters of the Atlantic Ocean.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Result</h3>\u0000 \u0000 <p>The length of available habitat increased by 1.3 km, and 75.0% of surgically tagged American Shad used historic spawning grounds in the Brandywine River following dam removal. Nine individuals exhibited long-term residency in the Brandywine River from May to June, demonstrating the importance of this newly available habitat to spawning adults. Additionally, one fish returned to the Brandywine River between years, displaying interannual spawning site fidelity and iteroparity. We also observed exploratory behavior of three additional American Shad that exited and returned to the Brandywine River within the same year.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Conclusion</h3>\u0000 \u0000 <p>Overall, we document a successful collaborative network via receiver array maintenance to answer questions regarding anadromous fish migration and habitat use following dam removal.</p>\u0000 </section>\u0000 </div>","PeriodicalId":51257,"journal":{"name":"Marine and Coastal Fisheries","volume":"16 6","pages":""},"PeriodicalIF":1.8,"publicationDate":"2024-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/mcf2.10323","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142861801","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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":"Use of hatchery-raised fish in validation of daily age estimates for juvenile Common Snook","authors":"Philip W. Stevens,&nbsp;Kyle L. Williams,&nbsp;Meredith B. Pfennig,&nbsp;Ryan W. Schloesser,&nbsp;Alexis A. Trotter,&nbsp;Derek P. Crane","doi":"10.1002/mcf2.10321","DOIUrl":"https://doi.org/10.1002/mcf2.10321","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> Objective</h3>\u0000 \u0000 <p>We investigated the validity of daily age estimates for juvenile Common Snook <i>Centropomus undecimalis</i> by using sectioned and sanded sagittal otoliths.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Methods</h3>\u0000 \u0000 <p>Common Snook have a protracted spawning season, which is problematic for validation of daily ages because a hatch date—needed to calculate age—cannot be reasonably assigned like it can for species with a short spawning period (&lt;30 days). To help overcome this, two readers independently counted presumed daily increments in otoliths collected from hatchery-reared Common Snook of known age (100–240 days; <i>n</i> = 91).</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Result</h3>\u0000 \u0000 <p>Differences between known ages and those estimated from otoliths were small (mean absolute difference = 3.4 days) for individuals aged 100 days, but these differences increased after 100 days, mainly due to the crowding of increments along the otolith margin. Underestimation of ages was 8% at 120 days, 29% at 180 days, and 36% at 240 days.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Conclusion</h3>\u0000 \u0000 <p>Ideally, analyses based on counts of daily increments in Common Snook otoliths should be limited to fish with an age of 100 days or younger.</p>\u0000 </section>\u0000 </div>","PeriodicalId":51257,"journal":{"name":"Marine and Coastal Fisheries","volume":"16 6","pages":""},"PeriodicalIF":1.8,"publicationDate":"2024-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/mcf2.10321","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142851435","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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":"Research on marine fish classification and recognition based on an optimized ResNet50 model","authors":"Guodong Gao,&nbsp;Zihao Sun,&nbsp;Guangyu Mu,&nbsp;Hui Yin,&nbsp;Yuxuan Ren","doi":"10.1002/mcf2.10317","DOIUrl":"https://doi.org/10.1002/mcf2.10317","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> Objective</h3>\u0000 \u0000 <p>In order to solve the problems of low accuracy and limited generalization ability in traditional marine fish species identification methods, the optimized ResNet 50 model is proposed in this paper.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Methods</h3>\u0000 \u0000 <p>First, a data set of marine fish images was constructed, targeting 30 common marine fish species (e.g., Japanese Eel <i>Anguilla japonica</i>, Japanese Horsehead <i>Branchiostegus japonicus</i>, Black Sea Sprat <i>Clupeonella cultriventris</i>, and Atlantic Cutlassfish <i>Trichiurus lepturus</i>). The marine fish images were pre-processed to increase the sample size of the data set. Second, the ResNet50 model was optimized by introducing a Dual Multi-Scale Attention Network (DMSANet) module to improve the model's attention to subtle features. A dropout regularization mechanism and dense layer were added to improve the model's generalization ability and prevent overfitting. The triplet loss function was adopted as the optimization objective of the model to reduce errors. Third, species identification was conducted on 30 species of marine fish to test the comprehensive performance of the optimized ResNet50 model.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Result</h3>\u0000 \u0000 <p>The test results showed that the optimized model had a recognition accuracy of 98.75% in complex situations, which was 3.05% higher than that of the standard ResNet50 model. A confusion matrix of the visual analysis results showed that the optimized ResNet50 model had a high accuracy rate for marine fish species recognition in many cases. To further validate and evaluate the generalization ability of the optimized ResNet50 model, partial fish data from the ImageNet database and the Queensland University of Technology (QUT) Fish Dataset were used as data sets for performance experiments. The results showed that the optimized ResNet50 model achieved accuracies of 97.65% and 98.75% on the two benchmark data sets (ImageNet and the QUT Fish Dataset, respectively).</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Conclusion</h3>\u0000 \u0000 <p>The optimized ResNet50 model integrates the DMSANet module, effectively capturing subtle features in images and improving the accuracy of fish classification tasks. This model has good recognition and generalization abilities in complex scenes, and can be applied to marine fish recognition tasks in different situations.</p>\u0000 </section>\u0000 </div>","PeriodicalId":51257,"journal":{"name":"Marine and Coastal Fisheries","volume":"16 6","pages":""},"PeriodicalIF":1.8,"publicationDate":"2024-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/mcf2.10317","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142860873","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}