Inventory of Ichyofaunal Diversity, Fishing Gear and Craft in Turag River, Dhaka, Bangladesh
Inventory of Ichyofaunal Diversity, Fishing Gear and Craft in Turag River, Dhaka, Bangladesh
复制标题
孟加拉国达卡图拉格河鱼类动物多样性、渔具和工艺清查
DOI：
10.4172/2150-3508.1000165
复制
发表时间：
2016
期刊：
影响因子：
--
通讯作者：
M. Hossain
中科院分区：
文献类型：
--
作者：
N. Bhouiyan;M. Baki;A. Sarkar;M. Hossain
孟加拉国许多河流的生物多样性受到工业和城市污染的严重威胁。本研究在Turag河中进行，从Amin Bazar桥（23°47' N 90° 20' E）开始，到Kamarpara桥（23°53' N 90° 23' E）。该清单调查是由一个小组在2012年12月至2013年11月期间使用船只每两周采样一次，通常在上午7点至下午5点之间。通过直接观察，收集了按物种、鱼长和重量、不同渔具和工艺分类的渔获量详细信息。共鉴定出71种（65种本地鱼类和6种外来鱼类）（隶属于9目25科）。在研究区域观察到两类17种不同类型的渔具（主动和被动渔具）和8种不同类型的船只捕鱼。调查显示，洪水上涨刺激了7月至10月研究区域内捕鱼活动的增加。11月至7月（旱季和雨季前）的鱼类数量较低，可能是由于这条河的水流减少和水质不良。配对t检验表明，旱季与季风前（P=0.02）、旱季与季风（P= 0.02）、旱季与季风后（P=0.03）的鱼类种类数差异显著。然而，渔业资源对周边人民生计的贡献非常有限。
Biodiversity of many Bangladesh Rivers is seriously threatened by industrial and municipal pollution. The study was conducted in the Turag River starting from Amin Bazar bridge (23°47' N 90°20'E) to Kamarpara bridge (23°53' N 90°23'E). This inventory survey was sampled at a fortnightly interval usually between 7.00 am to 5.00 pm by a team using a boat from December 2012 to November 2013. Detailed information on catch by species, fish length & weight, different types of gear & craft were collected through direct observation. A total of 71 (65 indigenous and 6 exotic) fish species (under 25 families of 9 orders) have been identified. 17 different types of gears of two categories (active and passive gear) and 8 different types of crafts were observed to harvest fish in the study area. The survey revealed that rising floodwater stimulated an increase in fishing activities in the study area from July to October. Fish numbers were recorded lower from November to July (dry and pre-monsoon period) likely due to reduced water flow and adverse water quality of this river. A paired t-test indicate that fish species numbers were significantly difference between Dry and pre-monsoon (P=0.02), Dry and monsoon (P=0.02) and Dry and post-monsoon season (P=0.03) respectively. However, fisheries resources contribution is very limited for livelihood of the surrounding people.
孟加拉国通吉地区图拉格河水体和沉积物重金属污染评价
DOI：
--
发表时间：
2006
期刊：
International Journal of Lakes and Rivers Vol. 1
影响因子：
--
作者：
H. M. Zakir;Shaila Sharmin;Naotatsu Shikazono
通讯作者：
Naotatsu Shikazono