泰国四大水库鱼类群落现状

Q3 Environmental Science
A. Sakset, Suwimon Seehirunwong, Chatchai Preecha
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引用次数: 1

摘要

鱼类群落状况是生产水体中实际渔业资源管理的重要信息。本研究旨在评估泰国四个主要水库的鱼类组合状况,并为其实际渔业管理提供建议。在2015年1月至2019年12月期间,使用多种网眼尺寸的刺网采集夜间样本。通过单变量和多变量分析获得的结果显示,Pa Sak Jolasid水库的鱼类数量最多(70种),而Rajjaprabha水库的鱼类物种数量最少(41种)。八个物种被确认有灭绝的危险,六个物种被认定为外来物种。相对重要性指数的百分比(%IRI)表明,主要物种主要属于鲤鱼科。除Sirikit水库(1.0)外,所有水库的饲料和食肉鱼类比例(F/C比)均显示出平衡的群落(4.4–9.2)。均匀度指数(J’)(0.53–0.67)和多样性指数(H’)(1.86–2.38)表明所有水库的多样性和分布适中。Sirikit水库和Ubolratana水库的单位努力渔获量(CPUE)值显示中等丰度(刺网/夜分别为614.8和826.0 g.100 m),Rajjaprabha水库和Pa Sak Jolasid水库的丰度较高(刺网-夜分别为1087.2和1012.5 g.100 m)。在水库鱼类组合状况的总体评估中,Pa Sak Jolasid和Rajjaprabha水库显示出最理想的条件,而Sirikit水库显示出最低的条件。这些发现表明,有必要实施各种切实可行的渔业资源管理,例如禁止引进外来入侵物种,以及为濒临灭绝的物种制定保护措施。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Status of Fish Assemblages in Four Major Reservoirs of Thailand
Fish assemblage status is essential information for practical fishery resource management in productive water bodies. This study aimed to assess fish assemblages’ status and provide recommendations for practical fishery management in four major reservoirs in Thailand. Night-time samples were collected between January 2015 and December 2019 using gill net with multiple mesh sizes. Results obtained through univariate and multivariate analyses showed that the Pa Sak Jolasid Reservoir had the highest number of fish species (70), while the Rajjaprabha Reservoir had the lowest number (41). Eight species were identified as in danger of extinction and six species as alien. The percentage of the index of relative importance (% IRI) showed that the major species mainly belong to the family Cyprinidae. The forage and carnivorous fish ratio (F/C ratio) showed balanced communities in all reservoirs (4.4–9.2) except the Sirikit Reservoir (1.0). The evenness index (J') (0.53–0.67) and diversity index (H') (1.86–2.38) indicated moderate diversity and distribution in all reservoirs. Catch per unit effort (CPUE) value displayed a medium abundance in the Sirikit and Ubolratana Reservoirs (614.8 and 826.0 g.100 m of gill net/night, respectively), and a high abundance in the Rajjaprabha and Pa Sak Jolasid Reservoirs (1,087.2 and 1,012.5 g.100 m of gill net/night, respectively). In the overall assessment of fish assemblage status among the reservoirs, the Pa Sak Jolasid and Rajjaprabha Reservoirs showed the most desirable condition, while the Sirikit Reservoir showed the least desirable condition. These findings suggest the need to implement various practical fishery resource management, such as banning the introduction of invasive exotic species, and establishing conservation measures for species on the list of extinction.
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来源期刊
Asian Fisheries Science
Asian Fisheries Science Agricultural and Biological Sciences-Food Science
CiteScore
2.20
自引率
0.00%
发文量
23
期刊介绍: The Asian Fisheries Science (AFS) was first published in 1987. It is an open access SCOPUS indexed publication of the Asian Fisheries Society. Four regular issues are published annually in March, June, September and December. In addition, special issues are published on specific topics. Full texts of the articles are available for free download and there is no publication fee. The journal promotes fisheries science which has an international appeal with special focus on Asian interests.
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