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首页> 外文期刊>Fisheries Research >Hydroacoustic assessment of fish resources in three reservoirs: The effects of different management strategies on fish density, biomass and size
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Hydroacoustic assessment of fish resources in three reservoirs: The effects of different management strategies on fish density, biomass and size

机译：三个水库鱼类资源的水声学评估：不同管理策略对鱼密度，生物质和大小的影响

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摘要

To assess the effectiveness of different fisheries management strategies in freshwater reservoirs in China, we use hydroacoustic techniques to quantify the density, biomass, size, and patterns in distribution of fishes in Wanyao (WY), Laohutan (LHT), and Qiaodun (QD) reservoirs (Zhejiang Province), each of which has been managed differently. Significant differences in density, biomass and size distribution are reported among these reservoirs. In the overfished WY, fish density and biomass are lower than that in LHT (P 0.05). In QD, where fishing has been prohibited from 2011 to 2015, fish density and biomass are higher than in LHT (P 0.05). In LHT, where the larger-size fish (> 48 cm) were caught and the smaller ones were left in the reservoir, proportionally more mid-sized fish ((similar to)11-48 cm, 84.63%) are present than smaller or larger fish. Our research improves the understanding of the relationships between fisheries management strategies and the density, size and biomass of fishes in reservoirs.We demonstrate that fisheries management strategies play an important role in maintenance of fish resources in reservoirs, and that hydroacoustics techniques can be successfully used to quantify fish density and size distributions.
机译：为了评估中国淡水储层中不同渔业管理策略的有效性，我们使用水声技术量化Wanyao（WY），Laohutan（LHT）和Qiaodun（QD）鱼类分布的密度，生物量，大小和模式。水库（浙江省），每个人都有不同的管理。这些水库中报告了密度，生物质和尺寸分布的显着差异。在覆盖的WY中，鱼密度和生物质低于LHT（P <0.05）。在QD中，从2011年到2015年被禁止捕鱼，鱼密度和生物质高于LHT（P <0.05）。在LHT中，捕获较大尺寸的鱼（> 48厘米）并且较小的鱼类留在储存器中，比例更多的中尺寸鱼（（类似于）11-48cm，84.63％）存在于更小或较大的鱼。我们的研究改善了对水库中鱼类的密度，密度和生物量之间的关系的理解。我们展示了渔业管理策略在维护水库中的鱼类资源中发挥着重要作用，并且可以成功地使用水声学技术量化鱼密度和尺寸分布。

著录项

  • 来源
    《Fisheries Research》 |2019年第2019期|共7页
  • 作者

    Guo Aihuan; Yuan Julin; Chu Tianjiang; Lian Qingping;

  • 作者单位

    Agr Minist Zhejiang Inst Freshwater Fisheries Key Lab Hlth F Zhejiang Res Ctr East China Sea Fishery Res Inst Key Lab Freshwater Aquaculture Genet &

    Breeding Z Huzhou Peoples R China;

    Agr Minist Zhejiang Inst Freshwater Fisheries Key Lab Hlth F Zhejiang Res Ctr East China Sea Fishery Res Inst Key Lab Freshwater Aquaculture Genet &

    Breeding Z Huzhou Peoples R China;

    Agr Minist Zhejiang Inst Freshwater Fisheries Key Lab Hlth F Zhejiang Res Ctr East China Sea Fishery Res Inst Key Lab Freshwater Aquaculture Genet &

    Breeding Z Huzhou Peoples R China;

    Agr Minist Zhejiang Inst Freshwater Fisheries Key Lab Hlth F Zhejiang Res Ctr East China Sea Fishery Res Inst Key Lab Freshwater Aquaculture Genet &

    Breeding Z Huzhou Peoples R China;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 水产、渔业;
  • 关键词

    Hydroacoustic assessment; Reservoir; Fisheries management; Stock enhancement;

    机译：水声评估;水库;渔业管理;股票增强;

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