Agricultural Research Management Information System

Home
Research Summary
Search
About Us
- ARMIS
- Brochure
Contact Us
Report
User Request
Data Input
Help
- Operation Manual
  - PDF
  - Video
- Program Area & Commodity
We have reached 37600 number of research entries at this moment.

- Logout

Research Detail

Home
Research
Detail

A Study on the Catch Composition of Set Bag Net Used in the Ramnabad River, Patuakhali District (in Bangladesh)

M. R. Hasan
Department of Aquaculture, Faculty of Fisheries, Bangladesh Agricultural University, Mymensingh-2202, Bangladesh

U.A. Janifa
Department of Aquaculture, Faculty of Fisheries, Bangladesh Agricultural University, Mymensingh-2202, Bangladesh

S. Hashem
Department of Aquaculture, Faculty of Fisheries, Bangladesh Agricultural University, Mymensingh-2202, Bangladesh

M. A. Rahman
Department of Aquaculture, Faculty of Fisheries, Bangladesh Agricultural University, Mymensingh-2202, Bangladesh

S. M. Rahmatullah
Department of Aquaculture, Faculty of Fisheries, Bangladesh Agricultural University, Mymensingh-2202, Bangladesh

Abstract/ Executive Summary:

The field study was conducted on the set bag net (Behundi jal) fishery and species composition of set bag net in the Ramnabad River adjacent to the Galachipa upazila of Patuakhali district. The study was conducted for a period of eight months from July-2012 to February-2013. A total of twelve fishes and shellfishes such as Poa, Tengra, Ilish, Chewya, Golda chingri, Ramsos, Horina chingri, Kajli, Chapila, Motka chingri, Dogri, Boiragi were identified in the catches of set bag net used by the fishermen during the study period. Among that species Chewya (Taenioides cirratus ) and Horina chingri (Metapenaeus monoceros) were the dominant fishes. The Chewya was dominant in winter season while salinity was high. Horina chingri was dominant in rainy season when water current increased. The other fishes were found a little amount but not significant and had no relation with salinity and current. Salinity and water current was the main factors for the variation of total catch and availability of fish. In July to October the water level of the river remained high, so the abundance and availability of fish was high. For fishing fishermen used set bag net from July to February when the water level was high in rainy season and salinity was high in winter season. During high tide the water entered into the adjacent estuary and the fishermen used set bag net in the mouth of the estuary.

Keywords: Catch composition, Set bag net, SBN, Ramnsbad River

Location: Patuakhali District, Bangladesh

Start Date: 00-07-2012

End Date: 00-02-2013

Program Area: Animal Health and Management

Commodity: Aquatic animal

Objectives:

To undertake a catch assessment and species composition of the Ramnabad River by set bag net
To know the hydrographic parameters effect on catch composition.

Methodology:

Study Area: Selection of the study areas is an important step for conducting research because it indicates a premise from where required data would be collected in accordance with the objectives set for the study. The study area was selected in the Ramnabad River adjacent to the Galachipa upazila under the district Patuakhali. Study period: The study was conducted for a period of 8 (eight) months from July-2012 to February-2013, in the Ramnabad River adjacent to the Galachipa upazila under the district Patuakhali. Collection of data: During collection of data, primary sources were considered. 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. Data processing, Analysis and Presentation: The collected data were summarized and 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 have been used.

Source of Information: Journal of Biology, Agriculture and Healthcare Vol.4, No.17, 91-95; 2014

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

In the present investigation, it has revealed that most of the hydrographic parameters of the Ramnabad River were suitable for the habitat of fishes and other aquatic fauna. But during rainy season, soil erosion and heavy rainfall became a great problem for fish habitat. At that time hydrographic parameters changed frequently. The SBN was being used along the entire coast of Bangladesh with heavy concentration in some areas. It is most usable net in Ramnabad region. But some fisherman using extra fine nets, bank to bank netting and illegal catching of brood fish and fish fry have serious adverse effect on these fishery resources. A number of traditional and recently introduced fishing gear are used for harvesting fry of large number of commercially valuable species.

Knowledge Management: Journal