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Investigation on Species Composition in Chalan Beel of Bangladesh

SM Rezaul Karim
Department of Fisheries, Ministry of Fisheries and Livestock, Bangladesh

KM Abdul Halim
Department of Fisheries, Ministry of Fisheries and Livestock, Bangladesh

Md. Asek Uddin
Department of Fisheries, Ministry of Fisheries and Livestock, Bangladesh

Most. Farida Yeasmin
Department of Fisheries, Ministry of Fisheries and Livestock, Bangladesh

KM Hasanuzzaman
Department of Fisheries, Ministry of Fisheries and Livestock, Bangladesh

Abstract/ Executive Summary:

The experiment was carried out to investigate the species composition of fish and prawn in Ruhul beel and Bamonji beel under Chalan beel of Pabna district of Bangladesh. Data were collected from selected sanctuary sites, focus group discussion, personal and group contract as well as Government and Non- Government organizations with prepared and pretested questionnaire. A total of 38 fish species belonging to 24 Genus, 17 families and 8 orders (7 fish, 1 prawn) were recorded during the study period at Ruhul beel and Bamonji beel. The largest order recorded for both beels according to species frequency were Cypriniformes and Perciformes which contributed 36.84% (14 species) and 35.14% (12 species) for Ruhul beel and Bamonji beel followed by Perciformes and Cypriniformes which contributed 34.21% (13 species) and 32.43% (12 species) for Ruhul beel and Bamonji beel, respectively. The third largest species was Siluriformes for both beels contributed 10.53% (4 species) and 10.81% (4 species) to Ruhul beel and Bamonji beel, respectively followed by Channiformes which contributed 7.89% (3 species) and 8.11% (3 species) to Ruhul beel and Bamonji beel, respectively. The prevalence of other 4 orders was Beloniformes, Cyprinidontiformes, Decapoda and Tetraodontiformes both were contributed 2.63% (only 1 species) to Ruhul beel and 2.70% (only one species) Bamonji beel.

Keywords: Species composition, Chalan beel, sanctuary sites

Location: Department of Fisheries (DoF), Bangladesh Fisheries Research Institute (BFRI), Rajshahi University (RU), Dhaka University (DU) and Bangladesh Agricultural University, Bangladesh.

Start Date:

End Date:

Program Area: Variety and Species

Commodity: Fish

Objectives:

To investigate the species composition of fish and prawn in Ruhul beel and Bamonji beel under Chalan beel of Pabna district of Bangladesh.

Methodology:

The primary data was collected from selected sanctuary sites and control sites using various methods like baseline survey by transaction, focus group discussion, social mapping, wealth ranking, mobility mapping, personal and group contract with prepared and pretested questionnaire etc. The secondary data were collected from the Department of Fisheries (DoF), Bangladesh Fisheries Research Institute (BFRI), Rajshahi University (RU), Dhaka University (DU) and Bangladesh Agricultural University (BAU) library, using the internet and the selective fish landing centers in the study area. The number of fish species was counted to estimate the species composition as well as the diversity of the fish population, while the catch weight of fish offered a quantitative indicator of species biomass also related to the species composition, catch composition and fish diversity. The collected samples were sorted to species level (Kulbicki and Wantiez, 1990). The fishes were identified up to species level followed by (Rahman, 2005). Fish species composition and catch composition are usually expressed as the catch-per-unit-effort (gm/unit gear/hour). The previously collected data by the local Upazilla Fisheries Office, Project office and Statistics office was used as a baseline for the comparison with data collected in 1^st year. On the other hand, data of first-year was used as a baseline to estimate changing trends of species composition, fish diversity of the second year. Then data were entry and processing. Necessaary data on the present status of biological species of beels were investigated. This term can be used to assessing the degree of exploitation of fishery resources (Degerman et al., 1988).

Source of Information: International Journal of Fisheries and Aquatic Studies; 8(6): 88-91; 2020

Article Link (Online Journal): DOI: https://doi.org/10.22271/fish.2020.v8.i6b.2364

Funding Source:

Budget:

Total Budget (Tk.) :

Achievement/Findings:

There has been virtually conducted the study on the impacts of fish sanctuaries on the biodiversity of fishers. Once upon a time Ruhul beel was highly productive waterbody. However, it is losing its productivity for many natural and manmade reasons. Despite all these problems, Ruhul beel still serves as the natural fish bank for the major portion of the people in this beel area. However, there are a series of small beel under the Chalan beel which is quite different from biodiversity, species composition, vegetation, water depth, hydrography, physicochemical characteristics and biological conditions. The establishment of fish sanctuary might be the so effective tools to improve and defense the fish biodiversity as well as increasing fish production.

Knowledge Management: Journal