ICES Journal of Marine Science最新文献_第6页

Learning from the history of red shrimp fisheries in the Mediterranean to improve sustainability of deep-water bottom trawling 从地中海红虾渔业历史中汲取经验教训，提高深水底拖网捕捞的可持续性

IF 3.3 2区农林科学

ICES Journal of Marine Science Pub Date : 2024-03-15 DOI: 10.1093/icesjms/fsae031

Fabio Fiorentino, Germana Garofalo, Gioacchino Bono, Sergio Vitale

{"title":"Learning from the history of red shrimp fisheries in the Mediterranean to improve sustainability of deep-water bottom trawling","authors":"Fabio Fiorentino, Germana Garofalo, Gioacchino Bono, Sergio Vitale","doi":"10.1093/icesjms/fsae031","DOIUrl":"https://doi.org/10.1093/icesjms/fsae031","url":null,"abstract":"As deep-water red shrimp (DWRS) trawl fisheries gain importance in the Mediterranean, their impact on fragile deep-sea ecosystems requires careful management. We reviewed the historical development of DWRS fisheries in the Mediterranean to propose a harvest strategy that would enhance fishery sustainability, while preserving habitat and community integrity. We considered two representative typologies of DWRS fisheries: a domestic fleet operating within the Italian territorial waters of the Ligurian Sea, and a distant fleet operating mostly in international waters of the central-eastern Mediterranean and sharing shrimp stocks with non-European countries. Our proposed management approach is based on three main harvesting measures: (i) preventing the uncontrolled growth in number of trawlers, (ii) adopting a catch control regime, and (iii) identifying a network of deep-water areas designated alternately for fishing and conservation purposes. As with fisheries in other regions, new fishing grounds should be explored using “encounter protocols” to avoid areas hosting species indicators of Vulnerable Marine Ecosystems. Additionally, empirical indicators such as catch rate thresholds derived from fishers’ experience, could be used to move from one fishing ground to another to avoid local depletion of DWRS abundance and a decrease in fishery profitability.","PeriodicalId":51072,"journal":{"name":"ICES Journal of Marine Science","volume":"98 1","pages":""},"PeriodicalIF":3.3,"publicationDate":"2024-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140156849","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

Facilitating an ecosystem approach through open data and information packaging 通过开放数据和信息打包促进生态系统方法

IF 3.3 2区农林科学

ICES Journal of Marine Science Pub Date : 2024-03-13 DOI: 10.1093/icesjms/fsae024

Daniel E Duplisea, Marie-Julie Roux, Stéphane Plourde, Peter S Galbraith, Marjolaine Blais, Hugues P Benoît, Bernard Sainte-Marie, Diane Lavoie, Hugo Bourdages

{"title":"Facilitating an ecosystem approach through open data and information packaging","authors":"Daniel E Duplisea, Marie-Julie Roux, Stéphane Plourde, Peter S Galbraith, Marjolaine Blais, Hugues P Benoît, Bernard Sainte-Marie, Diane Lavoie, Hugo Bourdages","doi":"10.1093/icesjms/fsae024","DOIUrl":"https://doi.org/10.1093/icesjms/fsae024","url":null,"abstract":"Open data that can be easily incorporated into analyses are essential for developing ecosystem approaches to marine ecological management: a common goal in fisheries policy in many countries. Although it is not always clear what constitutes an ecosystem approach, it always involves scientists working with a large variety of data and information, including data from physical and oceanographic sampling, multispecies surveys, and other sources describing human pressures. This can be problematic for analysts because these data, even when available, are often held in disparate datasets that do not necessarily correspond at appropriate temporal and spatial scales. Data can often only be obtained by specific requests to individuals in governmental agencies who are delivering on an increasing number of data requests as interest grows in practical ecosystem approach implementation. This data access model is not sustainable and hinders the momentum for ecosystem approach development. We describe a data bundling R package that makes data and climate projections available at appropriate scales to facilitate development of an ecosystem approach for the Gulf of St. Lawrence, Canada. This approach integrates closely with the present workflow of most government analysts, academics in fisheries, and scientists in private industry. The approach conforms with open data initiatives and makes data easily available globally while relieving some of the burden of data provision that can fall to some individuals in government laboratories. The structure and approach are generic, adaptable, and transferable to other regions and jurisdictions.","PeriodicalId":51072,"journal":{"name":"ICES Journal of Marine Science","volume":"11 1","pages":""},"PeriodicalIF":3.3,"publicationDate":"2024-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140126156","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

Decadal (2010–2019) variability in the marine ecosystems of the North Atlantic 北大西洋海洋生态系统的十年（2010-2019 年）变异性

IF 3.3 2区农林科学

ICES Journal of Marine Science Pub Date : 2024-03-08 DOI: 10.1093/icesjms/fsae029

César González-Pola, Katherine E Mills, Agnieszka Beszczynska-Möller, Eileen Bresnan, Silvana N R Birchenough

{"title":"Decadal (2010–2019) variability in the marine ecosystems of the North Atlantic","authors":"César González-Pola, Katherine E Mills, Agnieszka Beszczynska-Möller, Eileen Bresnan, Silvana N R Birchenough","doi":"10.1093/icesjms/fsae029","DOIUrl":"https://doi.org/10.1093/icesjms/fsae029","url":null,"abstract":"The “Symposium on Decadal Variability of the North Atlantic and its Marine Ecosystems: 2010–2019” took place in Bergen, Norway, from 20 to 22 May 2022. This event, hosted by the Institute of Marine Research, was jointly sponsored by ICES and NAFO and constitutes the fourth in a series of these symposia that started in 1991. The first symposium’s aim was to review the hydrobiological variability in the decade of the 1980s, addressing the physical environment, plankton, invertebrates, and fish. Subsequent symposia maintained the classical structure, whilst a new theme session covering social sciences was added to the programme in the 2022 edition. Studies of climate impacts on marine ecosystems and living marine resources, including trends and regime shifts, emerged from increasingly longer ecosystem time series across the North Atlantic and subarctic regions. This symposium collection presents key findings discussed during the symposium. Whilst some progress has been made in advancing our ability to understand new trends and patterns of climate change and variability across physical, plankton, and fish communities, more work is needed to integrate these physical-ecological processes and scales with social science.","PeriodicalId":51072,"journal":{"name":"ICES Journal of Marine Science","volume":"10 1","pages":""},"PeriodicalIF":3.3,"publicationDate":"2024-03-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140100078","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

Hydro-acoustic classification and abundance estimation of mesopelagic fish in deep scattering layers (DSL) of the Indian Ocean 印度洋深散射层（DSL）中层鱼类的水声分类和丰度估算

IF 3.3 2区农林科学

ICES Journal of Marine Science Pub Date : 2024-03-08 DOI: 10.1093/icesjms/fsae028

Osvaldo Ernesto Chacate, Janet Claire Coetzee, Bjørn Erik Axelsen

{"title":"Hydro-acoustic classification and abundance estimation of mesopelagic fish in deep scattering layers (DSL) of the Indian Ocean","authors":"Osvaldo Ernesto Chacate, Janet Claire Coetzee, Bjørn Erik Axelsen","doi":"10.1093/icesjms/fsae028","DOIUrl":"https://doi.org/10.1093/icesjms/fsae028","url":null,"abstract":"Deep scattering layers (DSL) in oligotrophic systems are typically comprised of a variety of coexisting organisms, including fish, zooplankton, jellyfish, and squid, and hence there is uncertainty about the proportion of the acoustic backscatter in these layers that can be attributed to mesopelagic fish. Here, acoustic targets were classified using a multi-frequency acoustic classification algorithm based on data collected in the Indian Ocean at 18, 38, 70, and 120 kHz during three acoustic surveys in 2018. Frequency-dependent backscattering strength information (∆Sv) was extracted from acoustic data that coincided with trawl hauls dominated by mesopelagic fish. Five ∆Sv frequency pairs were used to separate the acoustic backscattering into three broad scattering categories, i.e. mesopelagic fish, crustacean-like/tunicates, and squids/others. Results indicated that the DSL is highly diverse and dominated by mesopelagic fish, with average densities at a regional scale ranging from 12.0 (±10.9) to 26.0 (±21.7) g m−2, and proportions of the acoustic backscatter attributed to mesopelagic fish ranging from 0.5 to 0.7. These estimates are generally lower than previously estimated for other regions of the Indian Ocean. The situation may well be similar elsewhere, particularly in oligotrophic systems, with potential ramifications for global mesopelagic fish biomass estimates.","PeriodicalId":51072,"journal":{"name":"ICES Journal of Marine Science","volume":"67 1","pages":""},"PeriodicalIF":3.3,"publicationDate":"2024-03-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140100050","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Seasonal shift in energy allocation from somatic growth to lipid storage and the link between pre-winter condition and overwintering potential in juvenile Pacific cod 太平洋鳕鱼幼鱼从体细胞生长到脂质储存的能量分配季节性变化以及冬前状况与越冬潜力之间的联系

IF 3.3 2区农林科学

ICES Journal of Marine Science Pub Date : 2024-03-07 DOI: 10.1093/icesjms/fsae023

Alisa A Abookire, Louise A Copeman, Michael A Litzow, Benjamin J Laurel

{"title":"Seasonal shift in energy allocation from somatic growth to lipid storage and the link between pre-winter condition and overwintering potential in juvenile Pacific cod","authors":"Alisa A Abookire, Louise A Copeman, Michael A Litzow, Benjamin J Laurel","doi":"10.1093/icesjms/fsae023","DOIUrl":"https://doi.org/10.1093/icesjms/fsae023","url":null,"abstract":"Warming temperatures in the Gulf of Alaska have been linked to recruitment failure in Pacific cod (Gadus macrocephalus), but the mechanisms and timing of mortality events for juveniles are unclear. To date, limited research has focused on overwintering success, and the knowledge of juvenile ecology and physiology is based entirely on summer observations. Here, we investigate the changes in body condition, diet composition, and tissue-specific fatty acid (FA) storage for age-0 Pacific cod in Kodiak, Alaska, from February to December during 2018 and 2020. We observed protracted nearshore residency from June to December. Cod body condition (Kdry) and predicted weight at length were lowest in October, November, and December. Although not different interannually, diet composition varied seasonally, which corresponded to an increase in cod length. A range of condition metrics (HSIwet, FA concentration in liver tissue, and the % of whole body FAs stored in the liver) began to increase in September. Cod prioritized growth during the summer, while in the autumn and pre-winter they allocated more energy into lipid storage. We conclude that seasonal changes in tissue-specific FA storage and pre-winter fish conditions are important factors to consider for understanding overwintering potential of juvenile Pacific cod.","PeriodicalId":51072,"journal":{"name":"ICES Journal of Marine Science","volume":"9 1","pages":""},"PeriodicalIF":3.3,"publicationDate":"2024-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140074053","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

Variable forage fish biomass and phenology influence marine predator diet, foraging behavior, and species interactions in coastal Newfoundland, Canada 觅食鱼类生物量和物候变化对加拿大纽芬兰沿海海洋掠食者的饮食、觅食行为和物种相互作用的影响

IF 3.3 2区农林科学

ICES Journal of Marine Science Pub Date : 2024-03-07 DOI: 10.1093/icesjms/fsae021

Gail K Davoren

{"title":"Variable forage fish biomass and phenology influence marine predator diet, foraging behavior, and species interactions in coastal Newfoundland, Canada","authors":"Gail K Davoren","doi":"10.1093/icesjms/fsae021","DOIUrl":"https://doi.org/10.1093/icesjms/fsae021","url":null,"abstract":"Forage fish species provide essential linkages for energy transfer within pelagic marine food webs. Capelin (Mallotus villosus), the focal forage fish in coastal Newfoundland, Canada, suffered a stock collapse in 1991 and has not recovered. Despite this collapse, capelin continue to provide locally abundant prey aggregations. Here, I synthesize the lessons learned from a long-term capelin-predator research program (2004–2022) on the northeast Newfoundland coast during the postcollapse period. I highlight the importance of simultaneously estimating forage fish biomass and predator responses in a multispecies and multiyear context. High interannual variation in capelin spawning timing and biomass was observed. Lower capelin biomass consistently resulted in predator species- and assemblage-level dietary shifts toward a higher diversity of lower trophic level, alternative prey. Energetic foraging costs of seabirds also increased under lower capelin biomass, but responses differed among species. Summer capelin consumption by dominant seabirds (9389 tonnes) and whales (778 tonnes) indicated predator energetic requirements and revealed higher natural mortality relative to fishery-based (1289 tonnes) mortality. Overall, this case study illustrated that, despite high observed behavioural plasticity, varying species-specific predator responses to changing capelin biomass integrated to increase potential competitive interactions under low capelin biomass, providing a basis for ecosystem-level change.","PeriodicalId":51072,"journal":{"name":"ICES Journal of Marine Science","volume":"37 1","pages":""},"PeriodicalIF":3.3,"publicationDate":"2024-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140074082","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

Limited interspecific gene flow in the evolutionary history of the icefish genus Chionodraco 冰鱼属 Chionodraco 进化史中有限的种间基因流动

IF 3.3 2区农林科学

ICES Journal of Marine Science Pub Date : 2024-03-01 DOI: 10.1093/icesjms/fsae019

Luca Schiavon, Santiago G Ceballos, Michael Matschiner, Emiliano Trucchi, Mario La Mesa, Emilio Riginella, Magnus Lucassen, Felix C Mark, Kevin Bilyk, Rafaella Franch, Andreas Walberg, Elisa Boscari, Lorenzo Zane, Chiara Papetti

{"title":"Limited interspecific gene flow in the evolutionary history of the icefish genus Chionodraco","authors":"Luca Schiavon, Santiago G Ceballos, Michael Matschiner, Emiliano Trucchi, Mario La Mesa, Emilio Riginella, Magnus Lucassen, Felix C Mark, Kevin Bilyk, Rafaella Franch, Andreas Walberg, Elisa Boscari, Lorenzo Zane, Chiara Papetti","doi":"10.1093/icesjms/fsae019","DOIUrl":"https://doi.org/10.1093/icesjms/fsae019","url":null,"abstract":"Hybridization and introgression are recognized as mechanisms promoting genetic variability during evolutionary radiations. We examined the impact of introgression in the process of speciation, focusing on the Antarctic icefish genus Chionodraco. Our analyses confirmed that the three Chionodraco species (Chionodraco hamatus, Chionodraco myersi, and Chionodraco rastrospinosus) were genetically distinctive, despite signals of past interspecific gene flow between C. hamatus and C. myersi that likely occurred during interglacial periods. However, in this study, no recent hybrids were identified. The lack of contemporary hybridization may be due to life-history traits and the type of marker used in the analysis. Our study emphasizes the importance of genomic approaches to detect subtle patterns of past hybridization accurately and highlights the significance of historical climate events in the demographic and evolutionary history of Antarctic notothenioids. Polar regions, and especially the Antarctic Peninsula, are now experiencing the fastest climate changes due to global warming. Understanding the impact of past climate events is fundamental to trace current modifications in species’ genetic variability and distributions and predict future evolutionary trajectories. This knowledge is also vital for conservation efforts, including the implementation of marine protected areas.","PeriodicalId":51072,"journal":{"name":"ICES Journal of Marine Science","volume":"15 1","pages":""},"PeriodicalIF":3.3,"publicationDate":"2024-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140017558","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

Biennial patterns in Alaskan sockeye salmon ocean growth are associated with pink salmon abundance in the Gulf of Alaska and the Bering Sea 阿拉斯加红鲑海洋生长的双年度模式与阿拉斯加湾和白令海的粉鲑丰量有关

IF 3.3 2区农林科学

ICES Journal of Marine Science Pub Date : 2024-02-29 DOI: 10.1093/icesjms/fsae022

Peter S Rand, Gregory T Ruggerone

{"title":"Biennial patterns in Alaskan sockeye salmon ocean growth are associated with pink salmon abundance in the Gulf of Alaska and the Bering Sea","authors":"Peter S Rand, Gregory T Ruggerone","doi":"10.1093/icesjms/fsae022","DOIUrl":"https://doi.org/10.1093/icesjms/fsae022","url":null,"abstract":"In response to ocean heating and hatchery production, pink salmon (Oncorhynchus gorbuscha) returning from the North Pacific Ocean steadily increased after 1975, leading to concerns about their influence on food webs and competition with other species. Using measurements of distance between scale annuli of 24 584 individual sockeye salmon (O. nerka), we examined growth during their 2 or 3 years at sea from 1977 to 2015 for eight populations in Alaska. We found significant, negative autocorrelations at 1 lag year in annual growth of sockeye salmon, with a consistent pattern of lower growth in odd years, i.e. opposite to the biennial pattern of pink salmon abundance. Peak pink salmon abundances reduced growth of sockeye salmon from 7 to 14% during the second year in the ocean compared with growth when pink salmon abundance was low, while third-year growth was reduced up to 17%. The overall effect of pink salmon abundance on sockeye growth was over two times greater than the effect of sockeye salmon abundance. Production hatcheries and ocean heating contribute to the competitive dominance of pink salmon, underscoring the need to consider this unintended anthropogenic effect on the growth and productivity of sockeye salmon throughout the North Pacific.","PeriodicalId":51072,"journal":{"name":"ICES Journal of Marine Science","volume":"75 1","pages":""},"PeriodicalIF":3.3,"publicationDate":"2024-02-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140009960","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

Ecological indicators to monitor offshore wind interactions with fisheries resources 监测近海风能与渔业资源相互作用的生态指标

IF 3.3 2区农林科学

ICES Journal of Marine Science Pub Date : 2024-02-28 DOI: 10.1093/icesjms/fsae017

Elizabeth T Methratta

{"title":"Ecological indicators to monitor offshore wind interactions with fisheries resources","authors":"Elizabeth T Methratta","doi":"10.1093/icesjms/fsae017","DOIUrl":"https://doi.org/10.1093/icesjms/fsae017","url":null,"abstract":"Offshore wind development (OWD) will generate much needed renewable energy, but it will also introduce several stressors to the marine ecosystem. Therefore, there is a need to develop information-rich monitoring programs to assess ecological impacts and inform solutions to mitigate adverse effects. This paper evaluates potential indicators of OWD impacts on fisheries resources that could be considered for monitoring programs, including indices of aggregate biomass, sensitive species, fish size, and trophic dynamics. Short-term (year-to-year) variability and the direction and strength of long-term trends were explored at both the scale of the US Southern New England wind energy area (WEA) and at the scale of the Southern New England region. The majority of candidate OWD indicators exhibited substantial temporal variability at either the WEA scale, the region scale, or both, highlighting the importance of addressing temporal variability in the design and duration of monitoring programs. Recommendations are provided to advance informative monitoring approaches both in the USA and elsewhere where such approaches are urgently needed. Among these is a recommendation for a minimum of 3–5 years of baseline data collection and continued monitoring for the lifetime of the wind project. This will enable an understanding of the temporal structure inherent to the time series of ecological indicators measured so that OWD impacts can be disentangled from those caused by other ecosystem pressures.","PeriodicalId":51072,"journal":{"name":"ICES Journal of Marine Science","volume":"43 1","pages":""},"PeriodicalIF":3.3,"publicationDate":"2024-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140010217","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Fish age reading using deep learning methods for object-detection and segmentation 使用深度学习方法进行对象检测和分割的鱼龄阅读

IF 3.3 2区农林科学

ICES Journal of Marine Science Pub Date : 2024-02-27 DOI: 10.1093/icesjms/fsae020

Arjay Cayetano, Christoph Stransky, Andreas Birk, Thomas Brey

{"title":"Fish age reading using deep learning methods for object-detection and segmentation","authors":"Arjay Cayetano, Christoph Stransky, Andreas Birk, Thomas Brey","doi":"10.1093/icesjms/fsae020","DOIUrl":"https://doi.org/10.1093/icesjms/fsae020","url":null,"abstract":"Determination of individual age is one essential step in the accurate assessment of fish stocks. In non-tropical environments, the manual count of ring-like growth patterns in fish otoliths (ear stones) is the standard method. It relies on visual means and individual judgment and thus is subject to bias and interpretation errors. The use of automated pattern recognition based on machine learning may help to overcome this problem. Here, we employ two deep learning methods based on Convolutional Neural Networks (CNNs). The first approach utilizes the Mask R-CNN algorithm to perform object detection on the major otolith reading axes. The second approach employs the U-Net architecture to perform semantic segmentation on the otolith image in order to segregate the regions of interest. For both methods, we applied a simple postprocessing to count the rings on the output masks returned, which corresponds to the age prediction. Multiple benchmark tests indicate the promising performance of our implemented approaches, comparable to recently published methods based on classical image processing and traditional CNN implementation. Furthermore, our algorithms showed higher robustness compared to the existing methods, while also having the capacity to extrapolate missing age groups and to adapt to a new domain or data source.","PeriodicalId":51072,"journal":{"name":"ICES Journal of Marine Science","volume":"47 1","pages":""},"PeriodicalIF":3.3,"publicationDate":"2024-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140009961","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