Abstract
The main objectives of the study were to determine the present status of fish biodiversity and socio-economic condition of fishermen in Belai beel during February 2016 to September 2016 by survey method using questionnaires, field visit and interviewing with the fishermen. The results indicated that about 27 species of fish fauna were found in the Belai beel, among them 23 species were indigenous and 4 species were exotic. Major dominant species were Rui (Labeo rohita), Catla (Catla catla), Bata (Labeo bata), Shingi (Heteropeneustes fossilis), Magur (Clarius batrachus), Tengra (Mystus tengra), Chanda (Chanda nama), Kakila (Xenentodon cancila), Common carp (Cyprinus carpio), Mola (Amblypharyngodon mola) in the study area. During the study period two critically endangered (Puntius sarana, Pangasius pangasius), two endangered (Labeo bata, Channa marulius), and three vulnerable (Chanda nama, Channa orientalis, Notopterus notopterus) fish species were found in the Belai beel. Analysis of socio-economic condition of fishermen showed that maximum (70%) had nuclear family and others (30%) had joint family, as well as fishermen, belonged to the age groups of 31 to 40 years (50%) and the others were 15 to 30 (20%), 41 to 50 (18%), 51 to 60 (10%), 61 to70 (2%). Overall, the present study suggested that fishermen communities should be educated by creating awareness for the proper conservation, management, and enhancement of biodiversity in the Belaibeel.Asian J. Med. Biol. Res. March 2018, 4(1): 69-76
Highlights
Assessment of fish biodiversity of freshwater resources and socioeconomic condition of fishermen has become a pressing issue for fisheries scientists, fisheries managers, ecologists, environmentalists
Analysis of fish biodiversity There are about 27 species of fish fauna found in the Belaibeel under 11 families, among them 23 species were indigenous and 4 species were exotic (Table 1)
A total 7 threatened fish species were recorded according to IUCN (2003) redlist of Bangladesh which is concurred with some other studies (Joadder, 2008b; Imteazzaman and Galib, 2013)
Summary
Assessment of fish biodiversity of freshwater resources and socioeconomic condition of fishermen has become a pressing issue for fisheries scientists, fisheries managers, ecologists, environmentalists. The freshwater fisheries resources of Bangladesh are declining day by day due to lack of proper management policy, over-exploitation and the unplanned establishment of dams (FAO, 2009). The rapid growth of population and high rate expansion of agricultural activities, unplanned industrial activities are major threats for the freshwater fisheries resources. The freshwater bodies of Bangladesh are considered a home to at least 265 species of fin fishes (Rahman, 2005).The haors, baors, beels,and jheels are of fluvial origin and are commonly identified as freshwater resources (DoF, 2015). Beel is generally rich in fisheries resources. Once, this beel had abundant of native wild fish species, prawn, snail, crabs and turtles. The Belaibeel is rich in fisheries resources. Considering the fertility and nutrients, overall ecosystem of the Belaibeel is productive and is inhabited by
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