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Present Status of Shark Fishing in the Marine Water of Bangladesh

Bikram Jit Roy
Scientific Officer, Marine Fisheries Survey Management Unite, C.G.O. Building-2, 6th Floor, Agrabad, Chittagong, Bangladesh.

Manju Prava Dey
Scientific Officer, Marine Fisheries Survey Management Unite, C.G.O. Building-2, 6th Floor, Agrabad, Chittagong, Bangladesh.

Md. Fokhrul Alam
Scientific Officer, Marine Fisheries Survey Management Unite, C.G.O. Building-2, 6th Floor, Agrabad, Chittagong, Bangladesh.

Niprandra Kumar Singha
Scientific Officer, Marine Fisheries Survey Management Unite, C.G.O. Building-2, 6th Floor, Agrabad, Chittagong, Bangladesh.

Abstract/ Executive Summary:

The present study was done during the period April/2006 to March/2007. A total 22 species belongs to 17 genera and 11 families including sharks, skates and rays were identified. Out of this sharks comprises of 10 species, 08 genera belongs to 06 families. In the ray group 10 species, 07 genera and 05 families and 02 species of skates belongs to 02 genera and 01 family were identified. The total landed of sharks, skates and rays were 398.68 MT. The percentage composition should that the highest catch in percentage weight, Himantura uarnak was 41.11% and the lowest Amphotistius kuhlii which was 0.04%. The highest landing was in the month of June/06 was 81.935 MT and the lowest in the August/06 was 4.458 MT.

Keywords: Sharks, Himantura uarnak and Amphotistius kuhlii

Location: Laboratory of Marine Fisheries Survey Management Unit, Chittagong.

Start Date: 00-04-2006

End Date: 00-05-2007

Program Area: Resource Development and Management

Commodity: Fish

Objectives:

To determine the present status of shark fishing in the marine water of Bangladesh

Methodology:

The sharks fishes and related information were mainly collected from the Fishery Ghat, Chittagong fish landing center, Chittagong and BFDC Fish Harbour center, Cox’s Bazar. Sample were identified and analyzed in landing station and Laboratory. Most of the samples were preserved in 10% formalin and kept at the laboratory of Marine Fisheries Survey Management Unit, Chittagong. The systematic arrangement and other information about the species listed were done with the help of books-Rhaman A.K.A (1995), Verma P.S, (1994), Storer and Usinger (1975), S.R. Munro (1982 ) Hussain (1970), Mustafa M.G. (1996), Misra K.S. (1952), Sarkar M.N. (1980), Bay of Bengal news (June-1988, September 1989), and different working papers 1). studies of the chondrichthyes fauna-the journal of Nuami, vol-5, No-1 and 2, 1988, 2), Management of shark fisheries in to Indian cost al state, F. Hanfee-1988 and others available literature consulted and the data were analyzed both manually and with the help of a computer. Gear and Craft: Maximum shark were captured by shark net. Which mesh size was 400-520 m, min size. The width of the net was 10-15 m, length was 1500-2200 meter and the thread No. was 12. Each craft (boat) was made of wood and length 16-17 meter and width 4-5 meter and bear 45/65 and 75 HP Marine Diesel Engine. In the fishing time each boat carries 15-20 number of crews and duration of fishing time were 10-12 day per trip. These type of net was used only in Chittagong area’s. Some sharks were also captured as a by catch of “Lakka Jal” (large mesh size gill net) which mesh size was 220-230 mm, the width of the net was 10m-12m, length was 3000 m-4000 m and thread No. 14 and the boat was made of wood and carrying 45-65 HP. The duration of fishing days were 10-17 days/Trip and number of crews were 17-19 no. These types of net only used in Chittagong and Cox’s Bazar areas. But in Cox’s bazar areas only Hook and line was used for shark as a by catch. The hook and line was used by the wooden engine boat. The no. of boats were used for hook and line more then 40-50 m and with 22-35 HP marine engine. The number of crews were 3-6. The fishing areas are near shore and some times offshore and their fishing duration either daily or 2-3 days per trip. Each boat contains 4000 to 6000 hooks and used the hooks are 6-21 no. But maximum used on 9 no. hooks.

Source of Information: CMS, Convention on the Conservation of Migratory Species of Wild Animals (UNEP/CMS/MS/Inf/10)

Article Link (Online Journal): http://www.cms.int/sites/default/files/document/Inf_10_Bangladesh_Presentation_on_Shark_Fishing_0.pdf

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

A total of 22 species belongs to 17 genera and 11 families including sharks, skates and rays were identified during the study period (April/2006 to March/2007). Out of this sharks comprises of 10 species, 08 genera belongs to 06 families. In the ray group 10 species, 07 genera and 05 families and 02 species of skates belongs to 02 genera and 01 family were identified. The total landed of sharks, skates and rays were 398.68 MT. The highest landing was in the month of June/06 was 81.935 MT and the lowest in the August/06 was 4.458 MT.

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