Marine and Coastal Fisheries最新文献

Reviewer acknowledgments 评论家致谢

IF 1.8 3区农林科学 Q2 FISHERIES

Marine and Coastal Fisheries

Pub Date : 2025-01-06 DOI: 10.1002/mcf2.10326

The editors and editorial board thank the following people who contributed technical reviews of manuscripts submitted to Marine and Coastal Fisheries: Dynamics, Management, and Ecosystem Science during the year ending November 30, 2024.

Cameron Ainsworth

Robert Allman

Joel Anderson

Chryssanthi Antoniadou

Iraide Artetxe

Ashley Baer

Ron Baker

Arthur Bass

Mark Belk

David Belkoski

Timothy Bonvechio

Christopher Bowser

Sandra Brooke

Deirdre Brophy

Ian Brosnan

Andre Buchheister

Sarah Burnsed

Mathew Callahan

Matthew Campbell

Toni Chute

Patricia Clay

Benjamin Clemens

Scott Colborne

Mary Conner

Jason Cope

Timothy Copeland

Alberto Correia

Jose L. Costa

Chelsey Crandall

Adam Delargy

B. S. Dias

Karim Erzini

Fahmi Fahmi

Jessica Farley

Megan Feddern

Adam Fox

Katherine Gallagher

Scott George

Yi Gong

Steve Haeseker

Silje Halvorsen

Jon Hess

Andrij Z. Horodysky

Challen Hyman

Naoto Ishikawa

Matthew Kendall

Nikolai Klibansky

Kathy Kuletz

Katie Lankowicz

Laura Lee

Janice Leriorato

Douglas Lipton

Lenore Litherland

Allie Litmer

Marisa Litz

Mark Lomeli

Silvia Lourenco

Zhenling Ma

Marvin Mace

Tyson Martin

Filipe Martinho

Juan Molina

Jonathan Moore

Greg Moyer

Hannah Murphy

Elizabeth Ng

Matthew Ogburn

Kiva Oken

Zachary Olsen

Miguel Olvera-Novoa

Tyler Pavlowitch

Quinn Payton

Patrick Polte

Maite Pons

Brandon Puckett

Bernardo R. Quintella

Jaime A. Ramos

Kate Richerson

Leena Riekkola

Craig Rose

Winifred Ryan

Shaye Sable

Skyler Sagarese

Peter Sakaris

Jessica Sameoto

Jorge Santos

Weiteng Shen

Weili Shi

Emily Slesinger

Michelle Sluis

Geoffrey Smith

Jasmine Somerville

Bryce Stewart

Gretchen Stokes

Matthew Streich

Justin Suca

Genoa Sulloway

Daniel Swadling

Eric Thunberg

Nick Tolimieri

Alison Towner

Jorge Trejo-Martínez

Andre Uychiaoco

Quang Van Nguyen

Matthew Vincent

Johanna Vollenweider

Alejandra V. Volpedo

John Walter

Chantell R. Wetzel

Alan Whitfield

John Wiedenmann

Kyle Williams

编辑和编辑委员会感谢以下人员，他们在截至2024年11月30日的一年中对提交给海洋和沿海渔业：动力学，管理和生态系统科学的手稿进行了技术审查。卡梅隆·安斯沃斯伯特·奥尔曼乔尔·安德森·克里桑蒂·安东尼托伊莱德·阿特雷·阿什利·贝尔曼罗恩·贝克阿瑟·巴斯马克·贝尔克大卫·贝尔科斯基莫西·邦维奇克里斯托弗·鲍尔斯桑德拉·布鲁克迪尔德·布罗菲安·布鲁斯纳安德烈·布赫斯特莎拉·伯恩斯马修·卡拉汉马修·坎贝尔托尼·丘特帕特丽夏·克莱本杰明·克莱门斯斯科特·科尔伯恩玛丽·康纳杰森·科普蒂莫西·科普兰和阿尔贝托·科雷亚何塞·l·科斯塔切尔西·格兰德亚当·德拉吉S. DiasKarim ErziniFahmi FahmiJessica FarleyMegan FeddernAdam FoxKatherine GallagherScott GeorgeYi GongSteve HaesekerSilje HalvorsenJon HessAndrij Z. horodkychallenhimannaoto IshikawaMatthew kendallai klibansky凯西库莱兹katie LankowiczLaura LeeJanice leiororat道格拉斯利普顿lenore LitherlandAllie LitmerMarisa LitzMark lomelisvia LourencoZhenling马马文MaceTyson MartinFilipe MartinhoJuan MolinaJonathan MooreGreg MoyerHannah murphelizabeth NgMatthew OgburnKiva OkenZachary奥尔森米格尔·奥尔维拉-诺沃特勒，帕夫洛维奇，奎因·佩顿，帕特里克·波尔特·佩特·蓬斯，布兰登·帕克特，贝尔纳多·r·昆特拉·艾梅·a·拉莫克·里奇森，丽娜·里克科，克雷格·罗斯，温弗瑞德·瑞恩·萨布莱斯·萨布莱斯·萨布莱斯·萨布莱斯·斯卢格·米歇尔·斯卢格·杰弗里·史密斯，茉莉·萨默维尔，布莱斯·斯图尔特，格雷琴·斯托克，马修·斯特雷奇，贾斯汀·苏格纳·萨洛维，丹尼尔·斯瓦德林，埃里克·桑伯格尼克，托利森·汤尼，豪尔赫Trejo-MartínezAndre，维乔·范阮马修·文森特约翰娜·沃尔伦韦德亚历杭德拉·v·沃尔佩多约翰·沃尔特·香泰尔·r·韦泽尔艾伦·惠特菲尔德约翰·维登曼凯尔·威廉姆斯

引用次数: 0

Trophic level influences larval Shortbelly Rockfish development 营养水平影响短腹岩鱼幼鱼的发育

IF 1.8 3区农林科学 Q2 FISHERIES

Marine and Coastal Fisheries

Pub Date : 2025-01-02 DOI: 10.1002/mcf2.10319

Garfield T. Kwan, Kamran A. Walsh, Andrew R. Thompson, Noah J. Ben-Aderet, H. William Fennie, Brice X. Semmens, Rasmus Swalethorp

Objective

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 Sebastes jordani collected by the California Cooperative Oceanic Fisheries Investigations program and archived at the Ichthyoplankton Collection.

Methods

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.

Result

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.

Conclusion

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.

目的鱼类的早期成功被认为是成年种群招募的最重要驱动因素之一，阐明控制机制对管理工作具有重要意义。在过去的一个世纪里，人们提出了许多假说来解释招募波动，最近假设的早期生命营养效率（TEEL）假说认为，较短的食物链长度等于从初级生产者到幼鱼的更高能量转移效率，从而降低早期死亡率，最终导致更强的招募。在TEEL理论下，人们会认为，在食物链中处于较低位置的食物会改善生长和身体状况，因为这些通常被证明与幼鱼的存活率增加有关。本研究的目的是通过量化加州合作海洋渔业调查项目收集的短腹岩鱼（sebases jordani）幼鱼的状况、生长和营养水平，并将其存档于浮游鱼收藏库，来检验TEEL假说的这一方面。方法采用氨基酸化合物特异性同位素分析方法评价短腹岩鱼幼体的营养水平。根据耳石微观结构估计其年龄大小和存活率。通过胃内容物分析来检查他们的饮食。结果食性低的幼虫体重大，生长速度快。然而，低营养水平的摄食对体长没有影响。导致岩鱼幼体营养水平较低的食入猎物不能确定。结论短腹岩鱼幼鱼摄食营养水平较低的猎物，其体重更大，生长速度更快，为TEEL假说提供了支持。然而，需要进一步的研究来确定更有效的能量转移的首选猎物。

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引用次数: 0

Stock-specific spatial overlap among seabird predators and Columbia River juvenile Chinook Salmon suggests a mechanism for predation during early marine residence 海鸟捕食者和哥伦比亚河幼年奇努克鲑鱼之间的种群特定空间重叠表明了早期海洋栖息期间的捕食机制

IF 1.8 3区农林科学 Q2 FISHERIES

Marine and Coastal Fisheries

Pub Date : 2024-12-31 DOI: 10.1002/mcf2.10318

Jeannette E. Zamon, Nick Tolimieri, Brandon E. Chasco, Mary E. Hunsicker, Donald M. Van Doornik, Brian J. Burke, David J. Teel, Elizabeth M. Phillips

Objective

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 Oncorhynchus tshawytscha and abundant fish-eating seabirds (common murres Uria aalge and sooty shearwaters Ardenna grisea) suggests the greatest potential for ocean predation risk to juvenile Chinook Salmon.

Methods

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.

Result

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.

Conclusion

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.

由于捕食被认为是首次进入海洋的幼鲑鱼自然死亡的主要原因，我们试图确定平均而言，受威胁和濒临灭绝的支努克鲑鱼幼鱼与丰富的食鱼海鸟（常见的murres Uria aage和Ardenna grisea）分布之间的特定种群空间重叠表明支努克鲑鱼幼鱼面临最大的海洋捕食风险。方法通过2003-2012年5月和2003-2022年6月的长期生态系统调查，量化海鸟捕食者和大马哈鱼幼鱼的相对丰度和空间分布。利用遗传种群鉴定方法将个体鱼分配到各自的种群中。然后，特定种群的物种分布模型生成了调查区域内捕食者和猎物之间平均年空间重叠的地图和指数。结果有明确的证据表明，普通海雀、黑海鸥和五个遗传群在哥伦比亚河内河和下游幼年奇努克鲑鱼之间存在空间重叠。结果表明，5月和6月食饵密度与捕食者密度呈显著正相关（≥0.70），但总体上5月空间重叠较大。空间重叠最大的区域位于哥伦比亚河口（46.2°N）和格雷斯港（47.0°N）之间的内大陆架，该区域是鲑鱼幼鱼洄游路径的起点，受河水流出量的强烈影响。结论海洋鸟类在奇努克大马哈鱼早期海洋栖息期间的捕食行为可能会影响其幼年在海洋的生存，为哥伦比亚河流域奇努克大马哈鱼种群的生态模型和可能的恢复措施提供依据。

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引用次数: 0

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 评估在鱼群聚集装置和自由鱼群下的金枪鱼围网捕鱼对东北大西洋小金枪鱼的影响：使用基于长度的方法的影响

IF 1.8 3区农林科学 Q2 FISHERIES

Marine and Coastal Fisheries

Pub Date : 2024-12-31 DOI: 10.1002/mcf2.10314

Komba Jossie Konoyima, Jiangfeng Zhu, Richard Kindong

Objective

Little Tunny Euthynnus alletteratus 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.

Methods

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.

Result

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 (L_∞) prior misspecification, and including life history priors in LBB produced a narrower confidence interval of the estimated reference points.

Conclusion

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 L_∞, 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.

目的小金枪鱼（Euthynnus alletteratus）是一种具有商业价值的鱼类，其研究已被国际大西洋金枪鱼保护委员会列为重点研究对象。本研究旨在评估东北大西洋小金枪鱼的种群状况、生活史先验的有效性以及模型预测参考点对先验错误的敏感性。这些发现可以帮助减少该地区小金枪鱼状态的不确定性。方法利用国际大西洋金枪鱼保护委员会（International Commission for Conservation of Atlantic tuna）数据库2000 - 2021年的生活史参数、围网鱼群聚集装置（FAD）和自由鱼群捕捞长度-频率数据进行实证估算。我们应用了基于长度的贝叶斯生物量（LBB）和基于长度的产卵势比评估方法。结果LBB的输出表明，在施加的捕捞压力下，小金枪鱼被严重过度捕捞。这一点得到了基于长度的产卵潜力比估计的证实，即在FAD和免费鱼群条件下，围网捕捞的鱼群每名新成员的产卵量较低。两种模型的参考点对渐近长度（L∞）先验错误最敏感，并且在LBB中包含生活史先验使估计的参考点的置信区间更窄。结论在FAD和自由学校环境下采用围网捕捞的东北大西洋小金枪鱼渔业是不可持续的。我们认为，用户先验可以减少LBB中的不确定性，而精确的先验规范，特别是L∞，需要使用模型得到较少的偏差结果。我们建议通过空间封闭等方式限制捕鱼量，但由于本研究之前生活史的不确定性，建议谨慎行事。

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引用次数: 0

Do sustainable development goals (SDGs) boost green productivity in national marine fisheries? International evidence 可持续发展目标（sdg）能否提高国家海洋渔业的绿色生产力？国际证据

IF 1.8 3区农林科学 Q2 FISHERIES

Marine and Coastal Fisheries

Pub Date : 2024-12-31 DOI: 10.1002/mcf2.10322

Kieu-Thi Phan, Yu-Lung Hsu, Sheng-Hung Chen

Objective

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.

Methods

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.

Result

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.

Conclusion

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.

考虑到可持续发展目标14 （SDG 14）在促进可持续海洋资源利用和保护方面的作用，本研究探讨了海洋渔业绿色全要素生产率的决定因素。方法利用2001年至2021年57个国家的面板数据，结合投入（劳动力、渔船和能源消耗）和产出（海洋生产总值和二氧化碳排放），通过定向距离函数和Malmquist-Luenberger模型估算效率得分。在控制财政资源和宏观经济指标的情况下，通过截断回归分析探讨可持续发展目标14与绿色全要素生产率（GTFP）之间的关系。结果可持续发展目标14显著提高了恒定规模回报（CRS）技术效率和可变规模回报（VRS）纯技术效率，凸显了海洋保护和可持续资源管理的重要性。此外，金融资源（如绿色贷款和政府投资）、研究和创新（如研发、研究人员数量和外国资金）和宏观经济因素（如海洋生产总值、国内生产总值和通货膨胀）对绿色生产力有积极影响。结论研究结果强调了海洋保护和可持续实践对提高渔业GTFP的重要性。以金融投资、创新和宏观经济稳定为重点的综合政策对于提高该部门的可持续性和效率至关重要。

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引用次数: 0

Stock identification and age prediction of Red Mullet Mullus barbatus in the western Black Sea (Türkiye) as inferred from otolith shape descriptors 根据耳石形状描述符推断的黑海西部（t<s:1> rkiye）红鲻鱼种群鉴定和年龄预测

IF 1.8 3区农林科学 Q2 FISHERIES

Marine and Coastal Fisheries

Pub Date : 2024-12-25 DOI: 10.1002/mcf2.10316

Taner Yildiz, Nurdan Cömert, Abdullah E. Kahraman, F. Saadet Karakulak

Objective

In this study, we applied shape analysis to differentiate two Red Mullet Mullus barbatus stocks in the western Black Sea and assessed the generalized linear model (GLM) for age prediction based on otolith dimensions and weight.

Methods

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.

Result

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.

Conclusion

The close alignment of observed and estimated ages highlights the potential for using otolith length in age estimation.

目的应用形状分析方法对黑海西部两种红鲻鱼种群进行区分，并对基于耳石尺寸和重量的广义线性模型（GLM）进行年龄预测。方法于2017年10月至2018年4月，利用商业底拖网渔船在基耶省İğneada和Şile采集了259条鱼的矢状耳石。利用小波变换（轮廓形状）描述耳石形状，并结合耳石长度、面积、宽度和周长等4个形态特征和圆度、矩形度、形状因子、圆度、椭圆度和纵横比等6个形状指标来揭示两个区域的差异。采用多元统计方法，包括多元方差分析（MANOVA）和典型判别分析（CDA），对形状指数进行了探讨。主坐标的典型分析（CAP）通过使用小波系数提供了两股耳石轮廓形状差异的概述。GLMs使用耳石尺寸参数、形状指数和耳石重量来预测年龄。结果左、右耳石差异显著，而右耳石差异无统计学意义。CDA对1岁和3岁儿童的歧视率分别为65.7%和64.8%，显示出不同的地方人群。在两个地区采样的红鲻鱼耳石轮廓不同，CAP在两个地区的总体准确率为67.1%，İğneada的准确率为68.12%，Şile的准确率为66.20%。GLMs确定耳石长度、重量、宽度、周长和鱼的性别是关键因素，耳石长度是估计年龄最重要的预测因素。结论耳石长度在年龄估计中的应用与实际年龄的吻合较好。

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引用次数: 0

Age, growth, maturity, and mortality of an understudied Gray Snapper fishery from the north-central Gulf of Mexico 墨西哥湾中北部一个研究不足的灰鲷渔场的年龄、生长、成熟度和死亡率

IF 1.8 3区农林科学 Q2 FISHERIES

Marine and Coastal Fisheries

Pub Date : 2024-12-18 DOI: 10.1002/mcf2.10324

Edward S. M. Kim, Justin C. McDonald, Laia Muñoz-Abril, J. Marcus Drymon, Mark A. Albins, Sean P. Powers

<div> <section> <h3> Objective</h3> <p>Gray Snapper <i>Lutjanus griseus</i> 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.</p> </section> <section> <h3> Methods</h3> <p>From 2011 to 2021, otoliths (<i>n</i> = 886) and gonads (<i>n</i> = 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.</p> </section> <section> <h3> Result</h3> <p>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 <span></span><math> <semantics> <mrow> <mfenced> <mrow> <msub> <mi>L</mi> <mi>t</mi> </msub> <mo>=</mo> <mn>731.52</mn> <mfenced> <mrow> <mn>1</mn> <mo>−</mo> <msup> <mi>e</mi> <mrow> <mo>−</mo> <mn>0.15</mn> <mfenced> <mrow> <mi>t</mi> <mo>+</mo> <mn>1.34</mn> </mr

目的灰鲷鱼在整个墨西哥湾构成了重要的休闲渔业和次要的商业渔业。根据最近一次评估的结果，整个种群看来是健康的；事实上，不断变化的气候条件导致了墨西哥湾中北部地区的范围扩大和随后的人口增长，而该地区目前缺乏该物种的全套基本生物学数据。这项工作提出的年龄，生长，成熟的综合研究结果，灰鲷鱼在阿拉巴马州和密西西比州水域的死亡率。方法2011 - 2021年采集耳石886块，性腺364块，按标准显微技术进行显微处理。年龄数据用于拟合三个独立的生长函数，并得出总死亡率、自然死亡率和捕捞死亡率的估计，而睾丸和卵巢按生殖阶段分类，以确定长度和年龄的成熟度。年龄范围从0到27岁，代表了迄今为止发表的研究中最全面的集合之一。使用von Bertalanffy生长函数构建的性别特异性生长曲线优于基于Akaike信息准则的Gompertz和logistic模型，并表明雄性达到更高的平均渐近长度lt= 731.52 1−e−0.15T + 1.34$$ left({L}_t=731.52left[1-{e}^{-0.15left{t+1.34right}}right]right) $$比女性L t = 704.28 1−e−0.14 t +1.62 $$ left({L}_t=704.28left[1-{e}^{-0.14left{t+1.62right}}right]right) $$。根据组织学分析，我们估计总长度为50% maturity to be 181 mm for males and 273 mm for females and total length at 90% maturity to be 215 mm for males and 354 mm for females. We estimate the age at 50% maturity to be <1.0 year for males and 2.0 years for females and the age at 90% maturity to be 1.4 years for males and 3.6 years for females. Mortality rates calculated using preferred estimators (Z = 0.30–0.38; M = 0.26; F = 0.04–0.12) indicate relatively low levels of exploitation in the north-central Gulf of Mexico, with full recruitment to the fishery occurring at age 4. 基于这些结果，墨西哥湾中北部的灰鲷种群具有相对未开发的年龄结构，其寿命适中，受捕捞压力最小。这项研究的结果为纳入评估提供了新的区域数据，并为该渔业的未来管理决策提供了知情基础。

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引用次数: 0

Acoustic-tagged American Shad utilize historic habitat following dam removal in northern Delaware 特拉华州北部水坝拆除后，声学标记的美洲鲥鱼利用历史栖息地

IF 1.8 3区农林科学 Q2 FISHERIES

Marine and Coastal Fisheries

Pub Date : 2024-12-18 DOI: 10.1002/mcf2.10323

Rachel E. Roday, Ian A. Park, Johnny E. Moore, Randy J. Feris Serrano, Dewayne A. Fox, Edward A. Hale

Objective

The anadromous American Shad Alosa sapidissima, 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.

Methods

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.

Result

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.

Conclusion

Overall, we document a successful collaborative network via receiver array maintenance to answer questions regarding anadromous fish migration and habitat use following dam removal.

摘要目的大西洋中部地区曾是重要的商业物种，但由于过度捕捞、水质差和进入淡水产卵栖息地的障碍，美洲无产卵鲥鱼数量下降。区域和国家一级的努力基本上解决了前两个障碍，以促进人口增长，但水坝的修改或拆除仍在进行中。2019年，特拉华州拆除了白兰地酒河（特拉华河的一条支流）上首个阻碍鱼类洄游的障碍——1号大坝。方法于2021年至2022年在特拉华河河口和大西洋沿岸水域，在最近拆除的1号水坝上方，用声学发射器对24条美国鲥鱼进行手术标记。结果拆除大坝后，有效栖息地长度增加了1.3 km， 75.0%的手术标记美国鲥鱼使用白兰地酒河的历史产卵地。从5月到6月，9只个体在白兰地酒河长期居住，证明了这个新栖息地对产卵的成虫的重要性。此外，有一条鱼在几年之间返回白兰地酒河，显示了年际产卵地点的保真度和互操作性。我们还观察了另外三只美国鲥鱼的探索行为，它们在同一年内离开并返回白兰地酒河。总的来说，我们记录了一个成功的合作网络，通过维护接收器阵列来回答有关大坝拆除后溯河鱼类迁徙和栖息地利用的问题。

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引用次数: 0

Use of hatchery-raised fish in validation of daily age estimates for juvenile Common Snook 利用孵化场饲养的鱼来验证斑诺克幼鱼的日龄估计

IF 1.8 3区农林科学 Q2 FISHERIES

Marine and Coastal Fisheries

Pub Date : 2024-12-15 DOI: 10.1002/mcf2.10321

Philip W. Stevens, Kyle L. Williams, Meredith B. Pfennig, Ryan W. Schloesser, Alexis A. Trotter, Derek P. Crane

Objective

We investigated the validity of daily age estimates for juvenile Common Snook Centropomus undecimalis by using sectioned and sanded sagittal otoliths.

Methods

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 (<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; n = 91).

Result

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.

Conclusion

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.

目的探讨利用矢状面切片和砂化的耳石对幼年小白腹小白鼠日龄估计的有效性。方法斯努克的产卵季节较长，这给日龄的验证带来了问题，因为计算年龄所需的孵化日期不能像产卵期较短（30天）的物种那样合理地分配。为了帮助克服这个问题，两位读者独立计算了从孵化场饲养的已知年龄的普通斯努克(100-240天；n = 91)。结果100天龄个体的已知年龄与耳石估算年龄之间的差异很小（平均绝对差值为3.4天），但100天龄后这些差异增加，主要是由于耳石边缘的增量拥挤。120日龄低估率为8%，180日龄低估率为29%，240日龄低估率为36%。结论理想情况下，基于普通斯努克耳石每日增量计数的分析应仅限于年龄为100天或更小的鱼。

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引用次数: 0

Research on marine fish classification and recognition based on an optimized ResNet50 model 基于优化 ResNet50 模型的海洋鱼类分类与识别研究

IF 1.8 3区农林科学 Q2 FISHERIES

Marine and Coastal Fisheries

Pub Date : 2024-12-11 DOI: 10.1002/mcf2.10317

Guodong Gao, Zihao Sun, Guangyu Mu, Hui Yin, Yuxuan Ren

Objective

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.

Methods

First, a data set of marine fish images was constructed, targeting 30 common marine fish species (e.g., Japanese Eel Anguilla japonica, Japanese Horsehead Branchiostegus japonicus, Black Sea Sprat Clupeonella cultriventris, and Atlantic Cutlassfish Trichiurus lepturus). 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.

Result

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).

Conclusion

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.

目的为解决传统海洋鱼类物种识别方法准确率低、泛化能力有限的问题，本文提出了优化的 ResNet 50 模型。方法首先，针对 30 种常见的海洋鱼类（如日本鳗鲡 Anguilla japonica、日本马头鱼 Branchiostegus japonicus、黑海匙吻鲟 Clupeonella cultriventris 和大西洋刀鱼 Trichiurus lepturus）构建海洋鱼类图像数据集。对海洋鱼类图像进行了预处理，以增加数据集的样本量。其次，通过引入双多尺度注意力网络（DMSANet）模块优化了 ResNet50 模型，以提高模型对细微特征的注意力。此外，还添加了 dropout 正则化机制和密集层，以提高模型的泛化能力并防止过拟合。采用三重损失函数作为模型的优化目标，以减少误差。第三，对 30 种海洋鱼类进行了物种识别，以检验优化后的 ResNet50 模型的综合性能。结果测试结果表明，优化模型在复杂情况下的识别准确率为 98.75%，比标准 ResNet50 模型高出 3.05%。视觉分析结果的混淆矩阵显示，优化后的 ResNet50 模型在许多情况下对海洋鱼类物种的识别具有较高的准确率。为了进一步验证和评估优化后的 ResNet50 模型的泛化能力，我们使用了 ImageNet 数据库和昆士兰科技大学（QUT）鱼类数据集中的部分鱼类数据作为性能实验数据集。结果表明，优化后的 ResNet50 模型在两个基准数据集（ImageNet 和昆士兰科技大学鱼类数据集）上的准确率分别达到了 97.65% 和 98.75%。结论经过优化的 ResNet50 模型集成了 DMSANet 模块，能有效捕捉图像中的细微特征，提高鱼类分类任务的准确性。该模型在复杂场景中具有良好的识别和泛化能力，可应用于不同场景下的海洋鱼类识别任务。

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引用次数: 0