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A Study on the Fish Biodiversity of Borulia Haor, Nikli, Kishoregonj

P C D Nath
Department of Aquaculture, Bangladesh Agricultural University, Mymensingh-2202, Bangladesh

S K Debnath
Department of Fisheries Technology, Bangladesh Agricultural University, Mymensingh-2202, Bangladesh

R Sharmin
Department of Fisheries Technology, Bangladesh Agricultural University, Mymensingh-2202, Bangladesh

S Benerjee
Department of Fisheries Management, Bangladesh Agricultural University, Mymensingh-2202, Bangladesh

M G Faroque
Department of Fisheries Management, Bangladesh Agricultural University, Mymensingh-2202, Bangladesh

M M Ali
Department of Aquaculture, Bangladesh Agricultural University, Mymensingh-2202, Bangladesh

Abstract/ Executive Summary:

A study was conducted to find out the fish biodiversity and socio-economic condition of fishermen in Borulia haor areas, located in Nikli upazila under the district of Kishoregonj for twelve weeks from July to October, 2008. A total of 47 fish species belonged to 19 families and 31 genera were identified from the haor. Among 8 common groups of fishes 7 species of carps, 12 species of catfishes, 4 species of snakeheads, 3 species of eels, 8 species of minnows, 2 species of clupeids and 7 miscellaneous species were recorded. Comparing dominancy of abundance among common groups of fishes, minnows (28.23%), carps (22.66%) and snakeheads (20.21%) took first, second and third position respectively considering weight. Numerically minnows (73.75%), catfishes (6.23%) and perches (5.84%) were first, second and third dominant groups respectively. Various recommendations and measures have been suggested to improve the fish biodiversity.

Keywords: Fish biodiversity, Catch composition, Common groups, Comparative abundance

Location: Nikli upazila, Kishoregonj district.

Start Date: 00-07-2008

End Date: 00-10-2008

Program Area: Conservation and Biodiversity

Non-commodity: Education

Objectives:

To find out the fish biodiversity and socio-economic condition of fishermen in Borulia haor areas

Methodology:

Selection and description of the study site: Borulia haor at Nikli upazila in Kishoregonj district was selected for the present study. The primary criterion for the selection of the study area was a suitable geographical coverage for wider variety of biodiversity and good numbers of dependent fishermen as far as possible. The Borulia haor is located around the Nikli sadar and surrounded by 5 villages under 3 union named Chhatir char, Nikli and Shingpur. The names of the villages are Chhatir char, Purbagram, Mohorkona, Kesobpur, Ghoradigha. The Borulia haor is connected with the Ghorautra river which is the main source of water in the haor. The Ghorautra river is originated from the Dhonu river at its upstream and falls in the Meghna river at its downstream. Almost entire haor was dried up during dry season except some Jolmohols (waterbodies with small area). The water area during rainy season was 3225 ha and that in dry season was 1075ha. Selection and category of fishermen as sample: In this study total 60 fishermen were randomly selected from the villages surrounding the haor. Fishermen were categorized into five groups on the basis of fishing gears which were used by them. Each group had 12 members (seine net, cast net, big cast net, gill net, push net) operating the same gear. New members were selected in each group at every sampling day. Period of the study: Data were collected by the researcher himself through personal interview with the fishers. The study was conducted for a period of 12 weeks from July to October, 2008. Preparation of questionnaire: In order to get a complete picture of fish biodiversity to fulfill the objectives of the study, a questionnaire was prepared. Method of fish biodiversity study: For the study of biodiversity of Borulia haor, sampling of catches and their assessment were carried out once in a week. Data were collected from every 5 groups at each sampling day. The representative sample was taken by hand without repetition of the same gear in each sampling day. The collected fishes were identified and sorted species-wise and the number of individuals for each species were counted and then percent composition was determined. Museum and Laboratory specimen of Faculty of Fisheries, BAU, Mymensingh were also used for this purpose. Source of data collection: During collection of data, both primary and secondary sources are considered. Primary data were collected from fishermen by the researcher himself. The secondary information was collected from fisheries offices, SSS (Society for Social Service) at Nikli Upazila.

Source of Information: Int. J. BioRes.1 (3): 37-41 March, 2010

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

A total of 47 fish species belonged to 19 families and 31 genera were identified in Borulia haor is an important breeding ground of different indigenous fish species.However, concerns arise about the long term sustainability of the haor fish biodiversity due to poor institutional and organizational support. A noticeable number of fishes are critically endangered to extinct. The government, NGO, national and international donars should come forward for a wider study on the aquatic biodiversity of the haors.

Knowledge Management: Journal