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首页> 外文期刊>International Journal of Biodiversity and Conservation >Assessment of fish distribution and biodiversity status in Upper Halda River, Chittagong, Bangladesh
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Assessment of fish distribution and biodiversity status in Upper Halda River, Chittagong, Bangladesh

机译：孟加拉国吉大港市上哈尔达河鱼类分布和生物多样性状况评估

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摘要

The Halda River of Bangladesh has immense importance as it is the only natural spawning ground of major carp fishes. In the present survey, the overall fish distribution and biodiversity from the upper portion of Halda River along with its two tributaries were studied. The sampling stations were Nazirhat Bridge, Sattarghat Bridge and Garduara. Fishes were collected directly from sampling stations two times in a month during the period of January to December, 2012. The species diversity was analyzed using the following diversity indices: Simpson dominance index (D); Simpson index of diversity (1-D); Shannon–Weiner index (H); Evenness index and Margalef index with the help of software PAST (Pale ontological Statistics Software Package for Education and Data Analysis). Totally 4,337 individuals of fish were counted. 63 species belongs to 24 families and 51 genera were recorded. The most abundant family was Cyprinidae, having 817 individuals (18.84%) followed by Gobiidae family with 629 individuals (14.50). Simpson index of diversity (1-D), Shannon–Weiner index (H) and Margalef index showed higher values at sampling site S3.
机译：孟加拉国的霍尔达河非常重要，因为它是主要鲤鱼的唯一天然产卵场。在本次调查中，研究了哈尔达河上游及其两个支流的总体鱼类分布和生物多样性。采样站是纳齐哈特桥，萨塔格哈特桥和加尔杜拉。在2012年1月至2012年12月的一个月内，每月两次从采样站直接收集鱼类。使用以下多样性指数分析物种多样性：辛普森多样性指数（1-D）;香农-韦纳指数（H）;在软件PAST（用于教育和数据分析的浅本体统计软件包）的帮助下，均匀度指数和Margalef指数。总共计数了4,337鱼类。记录了24个科的63种，共有51属。最丰富的家庭是鲤科，有817人（18.84％），其次是Gobiidae家族，有629人（14.50）。采样点S3的辛普森多样性指数（1-D），香农-韦纳指数（H）和玛格莱夫指数显示出较高的值。

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