Fisheries Management and Ecology最新文献

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Size-based indicators of unexploited deep-sea community in the Colombian Caribbean Sea 哥伦比亚加勒比海未开发深海群落的尺寸指标
IF 2 3区 农林科学
Fisheries Management and Ecology Pub Date : 2024-07-07 DOI: 10.1111/fme.12720
Jorge Paramo, Daniel Pérez
{"title":"Size-based indicators of unexploited deep-sea community in the Colombian Caribbean Sea","authors":"Jorge Paramo,&nbsp;Daniel Pérez","doi":"10.1111/fme.12720","DOIUrl":"10.1111/fme.12720","url":null,"abstract":"<p>Composition, size distribution, structure, and function of deep-sea marine communities must be understood before they are impacted by anthropogenic effects. The deep-sea ecosystem of the Colombian Caribbean Sea is unexploited with no fishing activity ever registered. We quantified the current state of the marine community using body size distribution (size-spectra), size-based indicators, minimum length (L<sub>MIN</sub>), maximum length (L<sub>MAX</sub>), average length (L<sub>mean</sub>), standard deviation of length (L<sub>SD</sub>), 10th and 90th percentiles of the length distribution, Shannon–Wiener diversity (<i>H</i>′), and Pielou's evenness (<i>J</i>′) to generate a baseline of potential ecological indicators that contribute to management and conservation of the Colombian bento-demersal community of deep-sea marine ecosystem. Sampling was in the Colombian Caribbean Sea at 58 stations during four samplings in August and December 2009, 21 stations in March and May 2010, and 45 stations from August to December 2020, using the swept area method, at depths of 200–550 m. Catches included &gt;50% families and species of fish, followed by 27 families (30%) and 33 and species (37%) of crustaceans. Chondrichthyes included 14% families and 9–11% species. Cephalopods included 2–3% families and 1–4% species. Size-spectra analysis confirmed expected values for unexploited communities in three sampling years for teleostei, crustacea, and whole community.</p>","PeriodicalId":50444,"journal":{"name":"Fisheries Management and Ecology","volume":"31 5","pages":""},"PeriodicalIF":2.0,"publicationDate":"2024-07-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141575899","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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
Interacting effects of density and temperature on growth of wild and hatchery young-of-the-year anadromous brown trout (Salmo trutta L.) 密度和温度对野生和孵化年幼溯河褐鳟(Salmo trutta L.)生长的交互影响
IF 2 3区 农林科学
Fisheries Management and Ecology Pub Date : 2024-07-04 DOI: 10.1111/fme.12724
Adam M. Lejk, Szymon Smoliński, Maksym Łaszewski, Grzegorz Radtke
{"title":"Interacting effects of density and temperature on growth of wild and hatchery young-of-the-year anadromous brown trout (Salmo trutta L.)","authors":"Adam M. Lejk,&nbsp;Szymon Smoliński,&nbsp;Maksym Łaszewski,&nbsp;Grzegorz Radtke","doi":"10.1111/fme.12724","DOIUrl":"10.1111/fme.12724","url":null,"abstract":"<p>Stocking can affect population density but may influence fish growth responses to changes in environmental conditions. In a multi-year field experiment, we investigated the interactive effects of density and temperature on the growth of young-of-the-year anadromous brown trout in streams stocked with wild-origin hatchery-reared brown trout. Fish origin was the predominant factor influencing growth rate, thereby highlighting the importance of discriminating between wild and hatchery-reared individuals. Growth was positively related to temperature (degree-days) and negatively related to density, with the growth response to temperature modulated by density. Temperature had a more pronounced effect on juvenile growth at low density than at high density. The reduced growth response to temperature caused by density could reduce population resilience and should be considered in management and conservation strategies.</p>","PeriodicalId":50444,"journal":{"name":"Fisheries Management and Ecology","volume":"31 6","pages":""},"PeriodicalIF":2.0,"publicationDate":"2024-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141547166","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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
Effect of stocking on brown trout angling catch rates in the Czech Republic during 1996–2018 1996-2018 年间放养对捷克共和国褐鳟垂钓捕获率的影响
IF 2 3区 农林科学
Fisheries Management and Ecology Pub Date : 2024-07-04 DOI: 10.1111/fme.12726
Luděk Šlapanský, Michal Janáč, Pavel Jurajda
{"title":"Effect of stocking on brown trout angling catch rates in the Czech Republic during 1996–2018","authors":"Luděk Šlapanský,&nbsp;Michal Janáč,&nbsp;Pavel Jurajda","doi":"10.1111/fme.12726","DOIUrl":"10.1111/fme.12726","url":null,"abstract":"<p>When investigating potential causes of apparent declines in European brown trout angling catch rates over recent decades, fisheries management procedures are rarely considered. Using a 20-year dataset of brown trout stocking and angling catch rates, we found a significant decline in brown trout angling catch rates in streams of East Bohemia, Czechia, were well predicted by a reduction in the number of brown trout stocked at catchable size (i.e. age-3+). Increased stocking of smaller sized brown trout, and recent sporadic efforts to stock large brown trout, had no effect on catch rates. Our findings suggest that brown trout catch rates were related to ‘put-and-take’ stocking, in which non-native rainbow trout gradually replaced brown trout in both stocking and catches. Our study stresses the importance of considering historical fisheries management, a sometimes-neglected factor, when studying angling catches of economically important species.</p>","PeriodicalId":50444,"journal":{"name":"Fisheries Management and Ecology","volume":"31 6","pages":""},"PeriodicalIF":2.0,"publicationDate":"2024-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/fme.12726","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141547163","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}
引用次数: 0
Collaborative research enhances selectivity in a lake fishery 合作研究提高了湖泊渔业的选择性
IF 2 3区 农林科学
Fisheries Management and Ecology Pub Date : 2024-07-04 DOI: 10.1111/fme.12723
Alfred Sandström, Johnny Norrgård, Thomas Axenrot, Henrik Ragnarsson-Stabo, Malin Setzer, Tomas Jonsson
{"title":"Collaborative research enhances selectivity in a lake fishery","authors":"Alfred Sandström,&nbsp;Johnny Norrgård,&nbsp;Thomas Axenrot,&nbsp;Henrik Ragnarsson-Stabo,&nbsp;Malin Setzer,&nbsp;Tomas Jonsson","doi":"10.1111/fme.12723","DOIUrl":"10.1111/fme.12723","url":null,"abstract":"<p>Size and species selectivity are crucial for developing sustainable fisheries. Our objective was to estimate the selectivity of whitefish fisheries in a large European lake through a collaboration of fishers, regional managers, and scientists. Fishers were given special permits to test, within a common framework and together with scientists, selectivity enhancement strategies adapted to their own experiences. Fishers and scientists jointly tested gillnets and pontoon traps and how fishing depth, soak time, fishing season, and mesh size were affected by bycatches of undersized fish of sensitive species. Results indicated that the selectivity of the fishery could be increased, particularly by targeting whitefish adjacent to spawning sites where spatiotemporal overlap with bycatch species was lower. Proposed changes to the fishery, such as new gear, would be costly initially but could become profitable over time due to a lower cost of handling bycatch. Our findings demonstrated that co-constructed knowledge can contribute to the governance of aquatic resources.</p>","PeriodicalId":50444,"journal":{"name":"Fisheries Management and Ecology","volume":"31 6","pages":""},"PeriodicalIF":2.0,"publicationDate":"2024-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/fme.12723","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141547195","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}
引用次数: 0
Sensitivity of the stock assessment for the Antarctic krill fishery to time-varying natural and fishing mortality 南极磷虾渔业资源评估对随时间变化的自然死亡率和捕捞死亡率的敏感性
IF 2 3区 农林科学
Fisheries Management and Ecology Pub Date : 2024-06-28 DOI: 10.1111/fme.12721
Elling Deehr Johannessen, Bjørn A. Krafft, Carl R. Donovan, Rodrigo Wiff, Bruno Caneco, Andrew Lowther
{"title":"Sensitivity of the stock assessment for the Antarctic krill fishery to time-varying natural and fishing mortality","authors":"Elling Deehr Johannessen,&nbsp;Bjørn A. Krafft,&nbsp;Carl R. Donovan,&nbsp;Rodrigo Wiff,&nbsp;Bruno Caneco,&nbsp;Andrew Lowther","doi":"10.1111/fme.12721","DOIUrl":"10.1111/fme.12721","url":null,"abstract":"<p>The stock assessment model for the Antarctic krill fishery is a population model operating on daily timesteps, which permits modeling within-year patterns of some population dynamics. We explored the effects of including within-year patterns in natural and fishing mortality on catch limits of krill, by incorporating temporal presence of key predator species and contemporary temporal trends of the fishing fleet. We found that inclusion of within-year variation in natural and fishing mortalities increased catch limits. Fishing mortality had a greater effect than natural mortality despite differences in top-down predation on krill, and potentially increased catch limits by 24% compared to the baseline model. Additionally, the stock assessment model allowed a higher catch limit when fishing was during peak summer months than autumn. Number of days with active fishing was negatively related to precautionary catch limits. Future stock assessments should incorporate contemporary spatiotemporal fishing trends and consider implementing additional ecosystem components into the model.</p>","PeriodicalId":50444,"journal":{"name":"Fisheries Management and Ecology","volume":"31 6","pages":""},"PeriodicalIF":2.0,"publicationDate":"2024-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/fme.12721","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141501761","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}
引用次数: 0
Unveiling interconnectedness between marine protected and non-protected areas in Tanzania: Insights from barred mudskipper (Periophthalmus argentilineatus) population genetic structure 揭示坦桑尼亚海洋保护区和非保护区之间的相互联系:从条弹涂鱼(Periophthalmus argentilineatus)种群遗传结构中获得的启示
IF 2 3区 农林科学
Fisheries Management and Ecology Pub Date : 2024-06-21 DOI: 10.1111/fme.12722
Cyrus Rumisha
{"title":"Unveiling interconnectedness between marine protected and non-protected areas in Tanzania: Insights from barred mudskipper (Periophthalmus argentilineatus) population genetic structure","authors":"Cyrus Rumisha","doi":"10.1111/fme.12722","DOIUrl":"10.1111/fme.12722","url":null,"abstract":"<p>Marine protected areas (MPAs) are globally recognised for their role in safeguarding marine fisheries from the detrimental impacts of human activities and climate change. Tanzania, in alignment with global conservation efforts, has designated 18 MPAs and plans to establish four more in the Southwestern Indian Ocean. However, a critical challenge arises from the lack of a thorough understanding of genetic connectivity between populations in MPAs and non-protected areas (NPAs). To address this, 151 mitochondrial D-loop sequences (357 base pairs) of Barred mudskipper (<i>Periophthalmus argentilineatus</i>) were analysed to assess genetic connectivity between MPAs and NPAs in Tanzania. The findings revealed a low and insignificant index of genetic differentiation (<i>F</i><sub>ST</sub> = −0.0046, <i>p</i> &gt; 0.05) between populations in MPAs and NPAs. Furthermore, haplotypes from both MPAs and NPAs did not cluster based on their geographical origins, with over 9 haplotypes shared between these areas. Additionally, the measured haplotype and nucleotide diversities did not differ significantly between MPAs and NPAs (<i>p</i> &gt; 0.05). However, MPAs showed a significantly higher number of private haplotypes compared to NPAs (<i>p</i> &lt; 0.05). These findings suggest high genetic interconnectedness between populations in MPAs and NPAs, underlining the importance of existing MPAs in preserving local genetic diversity and their potential to replenish depleted NPAs. However, realising the full potential of this interconnectedness necessitates stringent enforcement of sustainable fishing practices to alleviate pressure on fish stocks. It also requires the protection of critical habitats that serve as corridors for fish dispersal, facilitating interconnectedness between MPAs and NPAs.</p>","PeriodicalId":50444,"journal":{"name":"Fisheries Management and Ecology","volume":"31 6","pages":""},"PeriodicalIF":2.0,"publicationDate":"2024-06-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141501762","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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
Willingness to pay for recreational fisheries in Europe 欧洲休闲渔业的付费意愿
IF 2 3区 农林科学
Fisheries Management and Ecology Pub Date : 2024-06-14 DOI: 10.1111/fme.12719
Ing-Marie Gren, George Marbuah
{"title":"Willingness to pay for recreational fisheries in Europe","authors":"Ing-Marie Gren,&nbsp;George Marbuah","doi":"10.1111/fme.12719","DOIUrl":"10.1111/fme.12719","url":null,"abstract":"<p>Few studies have acknowledged and quantified the economic contribution in expenditures of recreational fisheries. Additional economic value attributed to fishers' willingness to pay (WTP) for recreational fisheries in excess of expenses was estimated for 33 countries in Europe. Benefit transfer was used in a meta-regression analysis of 184 studies and 1001 observations of WTP per day for recreational fisheries. Most studies of fishing were in the USA, but also in Europe, Australia, New Zealand, South America and Canada. Mixed-effects regression models were estimated with income, climate variables, population density and study characteristics as explanatory variables. Income and temperature positively affected WTP per day. Benefit transfers with these variables and different transfer methods among European countries showed that the estimated total WTP could amount to 11.4 billion USD (purchasing power parity corrected to 2020 prices). Variation in WTP per day was large, and ranged 9–62 USD among countries and transfer methods. For several countries, WTP for recreational fisheries exceeded 0.1% of gross domestic product.</p>","PeriodicalId":50444,"journal":{"name":"Fisheries Management and Ecology","volume":"31 5","pages":""},"PeriodicalIF":2.0,"publicationDate":"2024-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/fme.12719","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141341264","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}
引用次数: 0
Value of data in stock assessment models with misspecified initial abundance and fishery selectivity 数据在初始丰度和渔业选择性指定错误的种群评估模型中的价值
IF 2 3区 农林科学
Fisheries Management and Ecology Pub Date : 2024-05-29 DOI: 10.1111/fme.12718
Miren Altuna-Etxabe, Dorleta Garcia, Leire Ibaibarriaga, Quang C. Huynh, Hilario Murua, Thomas R. Carruthers
{"title":"Value of data in stock assessment models with misspecified initial abundance and fishery selectivity","authors":"Miren Altuna-Etxabe,&nbsp;Dorleta Garcia,&nbsp;Leire Ibaibarriaga,&nbsp;Quang C. Huynh,&nbsp;Hilario Murua,&nbsp;Thomas R. Carruthers","doi":"10.1111/fme.12718","DOIUrl":"10.1111/fme.12718","url":null,"abstract":"<p>The age-structured assessment model available in the MSEtool R package assesses stock status and exploitation for varying data availability, from limited to rich datasets. We investigated model accuracy in relation to data availability, population exploitation levels, initial population assumption and fishery selectivity misspecification. Estimates were accurate in all conditions when data were available for a stock in an unfished state. However, for estimates to be accurate without complete exploitation data, total catch and abundance index data needed to span more than two stock generations. When the data time series was shorter than two generations, fishery mean lengths spanning one generation improved relative estimates (e.g. depletion), but precise estimates of unfished recruitment required fishery age- or length-structured data.</p>","PeriodicalId":50444,"journal":{"name":"Fisheries Management and Ecology","volume":"31 5","pages":""},"PeriodicalIF":2.0,"publicationDate":"2024-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141196643","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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
Spatial and temporal variation of biomass density beneath drifting fish-aggregating devices in the western and central Pacific Ocean 太平洋西部和中部漂流聚鱼装置下生物量密度的时空变化
IF 2 3区 农林科学
Fisheries Management and Ecology Pub Date : 2024-05-25 DOI: 10.1111/fme.12711
Tianjiao Zhang, Jia Xin, Liming Song, Hongchun Yuan
{"title":"Spatial and temporal variation of biomass density beneath drifting fish-aggregating devices in the western and central Pacific Ocean","authors":"Tianjiao Zhang,&nbsp;Jia Xin,&nbsp;Liming Song,&nbsp;Hongchun Yuan","doi":"10.1111/fme.12711","DOIUrl":"10.1111/fme.12711","url":null,"abstract":"<p>We analyzed three-dimensional (3-D) spatial and temporal variation of biomass density associated with drifting fish aggregating devices (dFADs) in the western and central Pacific Ocean. Detection depth of dFAD echosounder buoys was divided into three layers, for estimation of biomass density in each layer based on detected water volume. Temporal variation and spatial distribution of biomass density in each layer were compared. Similarity of biomass density gravity center shifts in each layer were assessed using the dynamic time warping (DTW) regularization algorithm. Biomass density varied regularly over ~1 month, with the 2nd and 3rd layers delayed ~14 days compared to the 1st layer. Biomass distribution range and density values were higher in the 1st layer than the 2nd and 3rd layers, but locations of maximum biomass density were close. The distribution of biomass density gravity centers between adjacent water layers were similar, with gravity centers of the 2nd and 3rd layers shifted over time in relationd to the 1st layer. Our study demonstrated that the aggregation behavior of species from different water layers attracted by dFADs were related, and emphasized the necessity for ecosystem-based fisheries management.</p>","PeriodicalId":50444,"journal":{"name":"Fisheries Management and Ecology","volume":"31 5","pages":""},"PeriodicalIF":2.0,"publicationDate":"2024-05-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141151634","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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
Salmonids in hot water: An unprecedented warm-water event in Labrador, a subarctic region of Canada 鲑鱼陷入水深火热之中加拿大亚北极地区拉布拉多前所未有的暖水事件
IF 2 3区 农林科学
Fisheries Management and Ecology Pub Date : 2024-05-20 DOI: 10.1111/fme.12710
Emilie A. Geissinger, Travis E. Van Leeuwen, Nicholas Kelly, Curtis Pennell, Michelle G. Fitzsimmons, Steven Duffy, Rebecca Poole, Joey Angnatok, J. Brian Dempson, David Coté
{"title":"Salmonids in hot water: An unprecedented warm-water event in Labrador, a subarctic region of Canada","authors":"Emilie A. Geissinger,&nbsp;Travis E. Van Leeuwen,&nbsp;Nicholas Kelly,&nbsp;Curtis Pennell,&nbsp;Michelle G. Fitzsimmons,&nbsp;Steven Duffy,&nbsp;Rebecca Poole,&nbsp;Joey Angnatok,&nbsp;J. Brian Dempson,&nbsp;David Coté","doi":"10.1111/fme.12710","DOIUrl":"10.1111/fme.12710","url":null,"abstract":"<p>Unprecedented warm river temperatures in July 2023 in Labrador, a subarctic region of Canada, were the highest since monitoring began (1994–2023) and ranged from 19.4°C (Hunt River) to 22.5°C (Eagle River). Incipient lethal water temperatures were exceeded for adult Atlantic salmon and brook trout (≥25°C) on 14 days in five of seven rivers and Arctic charr (≥24°C) on 17 days in six of seven rivers. Consequently, Labrador had the greatest number of angling restrictions and closures in 2023. Recent warming serves as a warning to fishery managers of regions historically unaffected by heat waves of the need to prepare action plans that mitigate the effects of a warming climate on fishes.</p>","PeriodicalId":50444,"journal":{"name":"Fisheries Management and Ecology","volume":"31 5","pages":""},"PeriodicalIF":2.0,"publicationDate":"2024-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/fme.12710","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141123108","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}
引用次数: 0
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