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Study on the Fish Diversity in the Haor Area of Karimgonj Upazila, Kishoregonj

Md. Rakibul Hasan
Department of Aquaculture, Bangladesh Agricultural University, Mymensingh

Abstract/ Executive Summary:

A study was conducted to find out the fish diversity in Karimgonj haor area under Kishoregonj district. The study was conducted for a period of 20 weeks from July to November, 2012. A total of 43 species belonged to 18 families were identified from the haor. Haor represented by Cyprinidae with 13 species followed by Channidae with 4 species; Bagridae, Centropomidae and Mastacembelidae each with 3 species; Schilbeidae, Siluridae, Anabantidae and Paleomonidae each with two species and Nandidae, Clupidae, Clariidae, Heteropneustidae, Belondiae, Cobitidae, Gobiidae, Notopteridae and Tetraodontidae each with one species. Eight common groups of fishes were identified in the haor. Among them 7 species of carps, 9 species of catfishes, 4 species of snakeheads, 6 species of perches, 3 species of eels, 6 species of barb and minnows, 1 species of clupeids and 7 species of miscellaneous were recorded. Comparing composition among common groups of fishes, minnows (27.24%), carps (23.65%) and snakeheads (21.20%) took place first, second and third position respectively in dominancy in respect of weight. On the other hand, first, second and third positions were placed by minnows (72.74%), catfishes (7.24%) and perches (5.44%), respectively numerically. A total of 5 types nets and 1 type of wounding gears were used by the fishermen. Among the different types of nets, the highest number of species were recorded in the catches of seine net (33), which was closely followed by cast net (26) and relatively less number of species were recorded in the catches of long line (9).

Keywords: FISH DIVERSITY, HAOR AREA, KARIMGONJ UPAZILA

Location: Karimgonj haor area, Kishoregonj district

Start Date: 00-07-2012

End Date: 00-11-2012

Program Area: Conservation and Biodiversity

Commodity: Aquatic animal

Objectives:

To determine the present status of the fish diversity;
To determine the cause of fish diversity lose;
To formulate recommendations for effective management of the haor.

Methodology:

Selection and description of the study site: Some haor areas (Boro haor, Soto haor, Borulia haor, Chamrer haor) in Karimgonj upazila of Kishoregonj district were 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. At first, primary information was collected from Karimgonj Upazila Fisheries Officer regarding the biodiversity and concentration of fishing activities in the study area. On the basis of these preliminary information the final decision was taken for the study of this haor area. Period of the study: Data were collected by the researcher himself through investigation of haor area and personal interview of the fishermen. The study was conducted for a period of 5 months from July to November, 2012. The samples and data were collected weekly throughout the study period. Preparation of interview schedule: Interview schedule is very important for collecting data by survey method. In order to get a complete picture of fish diversity to fulfill the objectives of the study a draft interview schedule was prepared. The draft interview schedule was used for pre-testing a few sample respondents by the researcher. In pre-testing, attention was paid to incorporate any new information, which was not designed to be asked and filled in the draft interview schedule. The interview schedule was then modified, changed and rearranged according to the experience gathered from the pre-test. The final schedule was developed in logical sequence so that the fishermen could answer chronologically. The schedule included various questions related to fish diversity. The selected parameters were as follows: Name, address, age, education and others information of farmer; Name of available fish species at 15 years ago; Name, weight and size of available fish species at present; Collection of data: During collection of data, both primary and secondary sources were considered. Primary data were collected from fishermen by the researcher himself. Several visits were made to the study area to collect accurate information related to objectives of the study through interview schedule. For the study a combination of Key Informant Interviews, Individual Interviews and Focus Group Discussions were used to collect data from the fishermen. The secondary information was collected from fisheries offices and Kishoregonj Community Based Resources Management Project (SCBRMP), LGED, at Karimgonj Upazila. Sample collection: Fish samples were collected from the haor on each sampling days. The samples were collected from various sites of the haor. Identification and measurements of samples: For the identification, the samples were placed on a table for the easy contrast of vision. Identification was done by only eye observation and measurements were done carefully. Identification was done up to possible taxonomic groups. Finally the results were tabulated. Data processing, analysis and presentation: First the raw data is compiled and then gathered in a master sheet. From the master sheet the data will be processed for analysis. These data were verified to eliminate all possible errors and inconsistencies. Tabular technique was applied for the analysis of data by using simple statistical tools like averages and percentages. Finally, the processed data were transferred to a master sheet from which classified tables were prepared revealing the finding of the study. For processing and analysis purpose, MS Excel and MS word had been used. Tables, pie-charts etc. had been used for data processing and analysis.

Source of Information: MS Thesis, Roll No.: 11 Fish Aqua JD-25M, Registration No.: 33761 Session: 2006-2007, Department of Aquaculture, Bangladesh Agricultural University, Mymensingh

Article Link (Online Journal):

Funding Source:

1.

Budget:

Total Budget (Tk.) :

Achievement/Findings:

A total of 43 fish species belonged to 18 families were identified. Cyprinidae dominated with 13 species followed by Channidae belonged 4 species; Bagridae, Centropomidae and Mastacembelidae each belonged 3 species; Schilbeidae, Siluridae, Anabantidae and Paleomonidae each belonged two species and Nandidae, Clupidae, Clariidae, Heteropneustidae, Belondiae, Cobitidae, Gobiidae, Notopteridae and Tetraodontidae each belonged one species. Eight (8) common groups of fishes were identified in the haor. Among them 7 species of carps, 9 species of catfishes, 4 species of snakeheads, 6 species of perches, 3 species of eels, 6 species of barb and minnows, 1 species of clupeids and 7 miscellaneous species were recorded. Comparing composition among common groups of fishes, minnows (27.24%), carps (23.65%) and snakeheads (21.20%) took place first, second and third position respectively in dominancy in respect of weight. On the other hand, first, second and third positions were placed by minnows (72.74%), catfishes (7.24%) and perches (5.44%), respectively comparing dominancy of abundance considering numerical composition of fishes in haor.

Knowledge Management: Thesis