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首页> 外文期刊>Current Science: A Fortnightly Journal of Research >Trawling and by-catch: Implications on marine ecosystem
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Trawling and by-catch: Implications on marine ecosystem

机译：拖网捕捞和兼捕：对海洋生态系统的影响

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摘要

Trawling remains a controversial method of fishing due to the perceived lack of selectivity of the trawl net and the resultant capture of a huge quantity and diversity of non-target species, including endangered species such as sea turtles, coupled with its effect on the marine ecosystem. The impacts of trawling on the physical, chemical and biological environment of the marine ecosystem and the diversity and quantity of by-catch and discards remain poorly documented for the tropical waters. In India, the by-catch landed at fishing harbours are utilized mainly for the production of manure and animal feed. Further, by-catch reduction devices have not been implemented in the field. This review article, besides analysing the impact of trawling, highlights the need for adopting policies and practices that reduce the level of by-catch, the need for ecosystem-based management to ensure longterm sustainability of oceanic resources, and the adoption of a precautionary approach with emphasis on reducing, and if possible avoiding discards.
机译：拖网捕鱼仍然是一种有争议的捕鱼方法，因为人们认为拖网缺乏选择性，因此导致捕获了大量非目标物种，包括海龟等濒危物种，以及对海洋生态系统的影响。拖网捕捞对海洋生态系统的物理，化学和生物环境以及副渔获物和丢弃物的多样性和数量的影响，对于热带水域的记录仍然很少。在印度，降落在渔港的副渔获物主要用于生产肥料和动物饲料。此外，在本领域中尚未实现副渔获物减少装置。这篇评论文章除了分析拖网捕捞的影响外，还强调了采取降低副渔获物水平的政策和实践的必要性，基于生态系统的管理以确保海洋资源的长期可持续性的必要性以及采取预防性方法着重减少，并尽可能避免丢弃。

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