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

Studies on Fishery, Biology and Domestication of Gang Magur, Plotosus Canius

Mohammed Ashraful Haque
Scientific Officer
Riverine Sub-station, Bangladesh Fisheries Research Institute, Khepupara, Patuakhali

Abstract/ Executive Summary:

Fishermen usually catch P. canius and their fry/fingerlings by using different nets and gears during the period of high and low tide from different rivers, canals and estuaries of coastal areas. Generally, this fishes are caught by using lures of small frogs and the larvae of bees are also used. However, major amount fishes are caught during Aplril-August compare to rest of the months. This fish preferred food items of animal origin. Therefore it is considered as predatory in nature and carnivorous. It was also found that fish with larger guts contained maximum crabs (70% crabs and others 30% include mollusks, shrimp, small fish and aquatic insects/worms etc.) and small fish guts contain maximum small shrimp 70% and 30% other items. The juvenile or early matured species preferred shrimp while the adult one preferred crab as well as other food organisms. Availability of P. canius showed that the total length of fish ranged from 47.00-67.00 cm in the male and 49.50-84.00 cm in female. The gonad weight ranged from 0.55-7.40 gm in the male and 5.00-7.50 gm in the female respectively.

Keywords: Fishery, Biology, Domestication, Gang magur

Location: Khepupara, Patuakhali

Start Date: 01-07-2002

End Date: 30-06-2003

Program Area: Resource Development and Management

Commodity: Fish

Objectives:

Determine the abundance, distribution of gang magur in the southern part of Bangladesh and know its habitat condition; study its food and feeding habit; study its fecundity, age of maturity and spawning; and domestication in pond condition and development of brood fishes for induced breeding.

Methodology:

Abundance and distribution study of gang magur, P. canius was carried out in southern districts of Bangladesh. Detailed information on its habitat, catching gears were also studied during survey. For estimation of fecundity, maturity and spawning, the collected samples were preserved in 5% buffered formalin and later determined following the methods of Wood (1930), Clark (1934) and GSI values. Domestication trial was conducted in the ponds of Sub-station.

Source of Information: Annual Research Program 2002-03. BFRI, Mymensingh.

Article Link (Online Journal):

Funding Source:

1. Government

Budget: Two lakh fifty thousand

Total Budget (Tk.) : Two lakh fifty thousand

Achievement/Findings:

Gather information about its seasonal availability, regional distribution and different aspects of biology. Besides, attempts will be made for its domestication in pond condition to seed whether they develop sexual maturity in captivity.

Knowledge Management: Report/Proceedings