Fisheries Research最新文献

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Depth-utilization of skipjack tuna (Katsuwonus pelamis) in the western Pacific Ocean observed with pop-up satellite tags 用弹出式卫星标签观测西太平洋鲣鱼的深度利用

IF 2.3 2区农林科学 Q2 FISHERIES

Fisheries Research

Pub Date : 2025-12-01 DOI: 10.1016/j.fishres.2025.107609

Naoto Matsubara, Makoto Nishimoto, Yoshinori Aoki

Skipjack tuna (Katsuwonus pelamis) are widely distributed across the tropical, subtropical, and temperate regions of the Pacific Ocean, yet their ecological characteristics, particularly their vertical habitat use, remain insufficiently understood across these regions. In particular, surface fisheries in the subtropical region tend to report lower skipjack catch compared to tropical and temperate areas, suggesting that regional catchability may be shaped by horizontal distribution of skipjack with horizontal movement and depth-use behavior. However, tagging studies using archival tags require fish recapture, and therefore, depend on active fisheries, limiting data collection in regions with low fishing effort. To address this, we deployed 50 pop-up satellite archival tags (PSATs) on skipjack tuna for the first time to investigate their depth-use patterns across regions in a fishery-independent manner. The results indicated possible regional differences, with skipjack tuna in subtropical waters appearing to use somewhat greater depths than those in tropical and temperate regions. Although the dataset was limited and potential effects of postrelease behavioral changes should be acknowledged, these findings suggest that regional variation in vertical behavior could influence the spatial distribution of fishing grounds in surface fisheries, highlighting the utility of PSATs for revealing links between ecological depth use and fishery dynamics. Simultaneously, challenges such as tag-induced effects on individuals and premature detachment must be addressed to enable long-term, fishery-independent ecological monitoring.

鲣鱼（Katsuwonus pelamis）广泛分布在太平洋的热带、亚热带和温带地区，但它们的生态特征，特别是它们的垂直栖息地利用，在这些地区仍然缺乏充分的了解。特别是，与热带和温带地区相比，亚热带地区的表层渔业往往报告的鲣鱼捕获量较低，这表明区域捕获量可能受鲣鱼水平分布、水平运动和深度利用行为的影响。然而，使用档案标签进行标记研究需要重新捕获鱼类，因此依赖于活跃的渔业，限制了在捕捞量低的地区收集数据。为了解决这个问题，我们首次在鲣鱼上部署了50个弹出式卫星档案标签（psat），以独立于渔业的方式调查它们在不同地区的深度使用模式。结果表明可能存在区域差异，亚热带水域的鲣鱼似乎比热带和温带地区的鲣鱼使用的深度要大一些。尽管数据集有限，释放后行为变化的潜在影响应该得到承认，但这些研究结果表明，垂直行为的区域变化可能影响表层渔业渔场的空间分布，突出了psat在揭示生态深度利用与渔业动态之间联系方面的效用。同时，必须解决标签诱导对个体的影响和过早脱离等挑战，以实现长期的、独立于渔业的生态监测。

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引用次数: 0

Response by Abass to the letter to the editor by Pinder et al. Abass对Pinder等人致编辑信的回应。

IF 2.3 2区农林科学 Q2 FISHERIES

Fisheries Research

Pub Date : 2025-12-01 DOI: 10.1016/j.fishres.2025.107574

Zaheer Abass, Tasaduq Hussain Shah, Farooz Ahmed Bhat, Karankumar Ramteke, Aadil Hussain Magloo, Ishfaq Hamid, Rinkesh Nemichand Wanjari, Iyyappan Somasundharam

引用次数: 0

Responsible restocking to aid recovery of an iconic sciaenid fishery: A case study of Mulloway (Argyrosomus japonicus) 负责任地重新放养以帮助恢复一种标志性的鱼科鱼类：以马洛威鱼（Argyrosomus japonicus）为例

IF 2.3 2区农林科学 Q2 FISHERIES

Fisheries Research

Pub Date : 2025-12-01 DOI: 10.1016/j.fishres.2025.107620

Alistair Becker , Julian M. Hughes , Ashley M. Fowler , Matthew D. Taylor

Globally, sciaenids are targeted by commercial and recreational fishing sectors. Their coastal habitat, schooling behaviour, late maturation and often larger sizes, can make them vulnerable to overfishing. There are also advanced aquaculture techniques that are currently employed in both grow out for market and stocking programs. In south-eastern Australia Mulloway (Argyrosomus japonicus) have recently been considered ‘recovering’ after 20 years of relatively low biomass and a ‘depleted’ stock status. The species is the focus of a developing harvest strategy, restocking provides a management tool to support stock recovery in certain circumstances. A literature review of Sciaenidae stocking programs was conducted to identify characteristics of successful programs, and important considerations to avoid deleterious effects. Similarities in the constraints and complexity of stocking across Sciaenidae were identified which largely relate to genetic considerations and broodstock management, ecological interactions, and optimising size-at-release. The review synthesises this large body of literature and provides broad principles to guide future sciaenid stocking programs. Aquaculture-aided enhancement is rarely, if ever, incorporated within a harvest strategy. Using Mulloway as a case study, we develop this concept by highlighting important considerations, challenges, and potential outcomes, when integrating Aquaculture-aided enhancement as a support measure within this management framework.

在全球范围内，海螺是商业和休闲捕鱼部门的目标。它们的沿海栖息地、成群结队的行为、成熟较晚以及往往体型较大，这些都使它们容易受到过度捕捞的影响。还有先进的水产养殖技术，目前在市场生长和放养计划中都得到了应用。在澳大利亚东南部，Mulloway （Argyrosomus japonicus）在经历了20年相对较低的生物量和“枯竭”的种群状态后，最近被认为正在“恢复”。该物种是开发收获战略的重点，重新放养提供了在某些情况下支持种群恢复的管理工具。通过文献综述，探讨了成功放养计划的特点，以及避免有害影响的重要注意事项。研究发现，不同海蜇科的放养限制和复杂性具有相似性，这主要与遗传因素、亲鱼管理、生态相互作用和放养大小优化有关。这篇综述综合了大量的文献，并为指导未来的科学放养计划提供了广泛的原则。水产养殖辅助增强型很少（如果有的话）被纳入一个收获战略。以Mulloway为例，我们在将水产养殖辅助增强作为一项支持措施纳入这一管理框架时，通过强调重要的考虑因素、挑战和潜在的结果来发展这一概念。

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引用次数: 0

Rebuttal to the Response by Abass et al. 对Abass等人回应的反驳。

IF 2.3 2区农林科学 Q2 FISHERIES

Fisheries Research

Pub Date : 2025-12-01 DOI: 10.1016/j.fishres.2025.107575

Adrian C. Pinder, Rajeev Raghavan, Steven J. Cooke, J. Robert Britton

引用次数: 0

Rebuttal to the response by Millar and Broadhurst 米勒和布罗德赫斯特对此回应的反驳

IF 2.3 2区农林科学 Q2 FISHERIES

Fisheries Research

Pub Date : 2025-11-29 DOI: 10.1016/j.fishres.2025.107577

Bent Herrmann, Juan Santos, Manu Sistiaga, Jure Brčić, Junita D. Karlsen, Valentina Melli, Antonello Sala, Tiago Veiga-Malta, Jesse Brinkhof, Andrea Petetta, Mengjie Yu, Mark J.M. Lomeli, Elsa Cuende, Jordan P. Feekings, Ludvig A. Krag

引用次数: 0

Quantifying depletion rates of benthic macrofauna from the Danish Seine – A ‘low impact’ mobile bottom-contacting fishing gear 量化丹麦塞纳河底栖大型动物的耗损率——一种“低影响”的移动触底渔具

IF 2.3 2区农林科学 Q2 FISHERIES

Fisheries Research

Pub Date : 2025-11-29 DOI: 10.1016/j.fishres.2025.107611

Katrina Bromhall , Ciarán McLaverty , Ole R. Eigaard , Tim J.G. Wilms , Thomas Noack , Finbarr G. O’Neill , Grete E. Dinesen

The Danish ‘anchor’ seine is a widely used commercial fishing gear, assumed to have relatively low seabed impact due to shallow sediment penetration. However, this assumption has lacked empirical testing. Here, we quantify benthic macrofaunal depletion from Danish seines for the first time via a Before-After-Control-Impact (BACI) experiment involving single and multiple hauls. By attaching GPS loggers to the seine gear, we analysed separate benthic effects of the two main seine components (rope and ground gear) using targeted sampling within the respective footprints. From 120 Van Veen grab samples, we observed little or no depletion in macrofaunal density, biomass, or species richness for either gear component or haul treatment. However, multiple hauls led to marked depletion of erect tube-building Phoronis spp., which declined by 90 % in the rope and 64 % in ground gear footprints. Overall, macrofauna depletion was greater when subjected to multiple hauls, with clearer negative effects in rope impacted areas. Conversely, metrics such as density and biomass unexpectedly increased in ground-gear impacted areas, possibly due to scavenging species or natural variability in macrofauna distributions. We further estimated a whole-gear single-haul biomass depletion rate of 0.068, though this estimate is based on large-bodied fauna (>4 mm) and was associated with high uncertainty. Despite considerable sampling effort, the contrasting results and chiefly species-specific effects indicate an overall low benthic impact from the Danish seine. This outcome supports the general assumption of its relatively low impact, and as a potential alternative to more damaging beam trawls that target the same species in similar habitats.

丹麦的“锚”围网是一种广泛使用的商业渔具，由于浅层沉积物渗透，被认为对海底的影响相对较小。然而，这一假设缺乏实证检验。在这里，我们首次通过包括单次和多次运输的控制-影响前-后（BACI）实验，量化了丹麦围网的底栖大型动物枯竭。通过将GPS记录仪连接到围网设备上，我们在各自的足迹内使用目标采样分析了两个主要围网组件（绳索和地面设备）的单独底栖生物影响。从120个Van Veen grab样本中，我们观察到无论是齿轮组成还是拖运处理，大型动物密度、生物量或物种丰富度几乎没有减少。然而，多次牵引导致直立成管的Phoronis spp明显减少，绳索上的Phoronis spp减少了90% %，地面齿轮足迹减少了64% %。总的来说，当受到多次牵引时，大型动物的消耗更大，对绳索影响区域的负面影响更明显。相反，在受陆生动物影响的地区，密度和生物量等指标出人意料地增加，这可能是由于食腐物种或大型动物分布的自然变异性。我们进一步估计了整轮单次运输的生物量耗耗率为0.068，尽管这一估计是基于大型动物（>4 mm），并且具有很高的不确定性。尽管进行了大量的采样工作，但对比结果和主要的物种特异性影响表明，丹麦塞纳河总体上对底栖动物的影响较低。这一结果支持了其影响相对较小的一般假设，并且作为一种潜在的替代方案，可以替代针对相似栖息地中相同物种的更具破坏性的横梁拖网。

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引用次数: 0

Identifying key factors influencing the spatiotemporal variability of longline fishing activities in the Western and Central Pacific Ocean 确定影响中西太平洋延绳钓活动时空变异的关键因素

IF 2.3 2区农林科学 Q2 FISHERIES

Fisheries Research

Pub Date : 2025-11-22 DOI: 10.1016/j.fishres.2025.107605

Shenglong Yang , Wei Wang , Shengmao Zhang , Yumei Wu , Heng Zhang , Xiumei Fan , Fenghua Tang , Fei Wang

Accurately understanding the dynamic changes in fishing activities and their influencing mechanisms is crucial for the conservation of marine biological resources and fisheries management. This study extracted fishing effort information from Automatic Identification System (AIS) data and integrated 19 oceanic environmental variables, including Sea Surface Temperature (SST), Finite Size Lyapunov Exponent (FSLE), Dissolved Oxygen (O2), and Distance to Shore (DSH), to construct an MCRU-Net neural network framework at multiple spatiotemporal scales for predicting the spatial distribution and intensity of fishing activities. Furthermore, an input variable importance evaluation method was developed to identify the key environmental factors influencing the spatiotemporal variations of longline fishing operations in the region. The results show that SST and FSLE are the most critical factors affecting the operational distribution of tuna longline vessels. The spatiotemporal scale significantly influences the model’s predictive accuracy: larger scales improve spatial prediction accuracy, while smaller scales are more suitable for accurately predicting fishing intensity. The proposed deep learning model effectively captures the spatiotemporal dynamics of fishing activities across different scales and accurately identifies critical environmental drivers, thereby providing a scientific basis and decision-making support for fisheries resource management and sustainable development.

准确认识渔业活动的动态变化及其影响机制，对海洋生物资源养护和渔业管理具有重要意义。本研究利用自动识别系统（AIS）数据提取捕捞努力量信息，综合海面温度（SST）、有限尺寸Lyapunov指数（FSLE）、溶解氧（O2）和岸距（DSH）等19个海洋环境变量，构建了多时空尺度MCRU-Net神经网络框架，用于预测捕捞活动的空间分布和强度。在此基础上，建立了一种输入变量重要性评价方法，以确定影响该地区延绳钓作业时空变化的关键环境因素。结果表明，海温和FSLE是影响金枪鱼延绳钓渔船作业分布的最关键因素。时空尺度对模型的预测精度影响显著，大尺度提高了空间预测精度，而小尺度更适合准确预测捕捞强度。该深度学习模型能有效捕捉不同尺度渔业活动的时空动态，准确识别关键环境驱动因素，为渔业资源管理和可持续发展提供科学依据和决策支持。

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引用次数: 0

Feature-based cluster selection framework for binary classification on imbalanced acoustic data 基于特征的声学数据二值分类聚类选择框架

IF 2.3 2区农林科学 Q2 FISHERIES

Fisheries Research

Pub Date : 2025-11-22 DOI: 10.1016/j.fishres.2025.107598

Ahmet Pala , Anna Oleynik , Nils Olav Handegard

Underwater acoustics is an important component of fisheries management. Echograms, generated from acoustic backscatter data collected via echosounders, provide information on the distribution and abundance of marine life. Acoustic target classification (ATC) categorizes backscatters by assigning them into specific groups, such as fish or seabed. Traditionally, ATC requires extensive manual annotation, which is both time-consuming and prone to inconsistency. Automated approaches often rely on labeled data, but obtaining precise annotations remains challenging. This study introduces a method combining self-supervised learning (SSL) and clustering to perform high-resolution analysis of acoustic data. SSL features are extracted from echograms and clustered to classify pixels in a binary task. To address class imbalance, an over-clustering strategy is applied, followed by a greedy cluster selection algorithm guided by labeled data to maximize the

F 1

score. Aggregated probabilities for each pixel are calculated based on the selected clusters and thresholded to assign class labels. This feature-based approach is compared to a version using untreated data instead of features, and to a fully supervised method. Results show that the feature-based approach outperforms the raw data-based version and achieves performance close to the supervised model. Self-supervised data representations enable the training of simple yet effective downstream classification models.

水声是渔业管理的重要组成部分。回声图是由回声探测仪收集的声波反向散射数据生成的，它提供了有关海洋生物分布和丰富程度的信息。声学目标分类（ATC）通过将后向散射物划分为特定的组，例如鱼类或海底。传统上，ATC需要大量的手工注释，这既耗时又容易不一致。自动化方法通常依赖于标记的数据，但获得精确的注释仍然具有挑战性。本文介绍了一种结合自监督学习（SSL）和聚类的声学数据高分辨率分析方法。从回声图中提取SSL特征并聚类以对二进制任务中的像素进行分类。为了解决类不平衡问题，采用了过度聚类策略，然后采用标记数据引导的贪婪聚类选择算法来最大化F1分数。基于所选择的聚类和阈值计算每个像素的聚合概率，以分配类标签。将这种基于特征的方法与使用未经处理的数据而不是特征的方法进行比较，并与完全监督的方法进行比较。结果表明，基于特征的方法优于基于原始数据的方法，性能接近监督模型。自监督数据表示可以训练简单而有效的下游分类模型。

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引用次数: 0

Rebuttal to the response by Ryznar and Litzow 对Ryznar和Litzow回应的反驳

IF 2.3 2区农林科学 Q2 FISHERIES

Fisheries Research

Pub Date : 2025-11-21 DOI: 10.1016/j.fishres.2025.107573

Sarah Robinson Webster, John Gauvin

引用次数: 0

Seal cognition and the prospects of mitigating human-seal conflicts with deterrent devices 海豹的认知和用威慑装置减轻人海豹冲突的前景

IF 2.3 2区农林科学 Q2 FISHERIES

Fisheries Research

Pub Date : 2025-11-21 DOI: 10.1016/j.fishres.2025.107607

Topi K. Lehtonen , Petri Suuronen

The behavioural patterns and cognitive capacities of seals, along with the fast recovery of their populations in many coastal regions, have brought them into intensifying conflict with aquaculture and capture fisheries. To promote coexistence between seal populations and the fishery sector, acoustic deterrent devices (ADDs) are widely employed to prevent seals from approaching fish farms, fishing gear, coastal development sites or key areas of fish reproduction. Our literature review highlights the need for a deeper understanding of various aspects seal behaviour and cognition, such as their spatial awareness, learning capacities and problem-solving skills. Such knowledge is valuable both academically and in helping to mitigate human–seal conflicts, while minimising harm, such as hearing damage, to seals and non-target species. For instance, the current deterrent strategies often overlook behavioural and cognitive traits that may allow seals to circumvent the deterrents, thereby compromising their long-term effectiveness and causing animal welfare concerns. Our review underscores the need to understand the consequences of individual behavioural differences and environmental variability when addressing the challenges of ADDs and human–seal conflicts more generally. Such research can promote the development of more effective and ethically sound solutions to mitigate the conflict, including technical development of ADD systems that are more cost-effective, practical and align with animal welfare.

海豹的行为模式和认知能力，以及许多沿海地区海豹数量的迅速恢复，使它们与水产养殖和捕捞渔业之间的冲突日益加剧。为了促进海豹种群与渔业共存，我们广泛使用隔音装置，防止海豹靠近养鱼场、渔具、海岸发展地点或鱼类繁殖的主要区域。我们的文献综述强调需要更深入地了解海豹行为和认知的各个方面，例如它们的空间意识、学习能力和解决问题的能力。这些知识在学术上和帮助缓解人类与海豹的冲突方面都很有价值，同时最大限度地减少对海豹和非目标物种的伤害，如听力损伤。例如，目前的威慑策略往往忽视了行为和认知特征，这些特征可能会让海豹绕过威慑，从而损害它们的长期有效性，并引起动物福利问题。我们的综述强调，在更广泛地应对add和人海豹冲突的挑战时，需要了解个体行为差异和环境变异性的后果。此类研究可以促进制定更有效、更合乎道德的解决方案，以缓解冲突，包括开发更具成本效益、更实用、更符合动物福利的ADD系统的技术。

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