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

Status and Current Worries of Fish Diversity in the Payra River, Patuakhali, Bangladesh

Md. Aminul Islam
Department of Fisheries Management, Patuakhali Science and Technology University,Patuakhali-8602, Bangladesh

Ashfaqun Nahar
Department of Marine Fisheries and Oceanography, Patuakhali Science and Technology University, Patuakhali-8602, Bangladesh

Md. Emranul Ahsan
Department of Marine Fisheries and Oceanography, Patuakhali Science and Technology University, Patuakhali-8602, Bangladesh

Md. Moazzem Hossain
Department of Fisheries Management, Patuakhali Science and Technology University,Patuakhali-8602, Bangladesh

Abstract/ Executive Summary:

The study was conducted for a period of one year from April 2013 to March 2014 in the Payra River, ?Patuakhali, Bangladesh. A total of 114 fish species under 12 orders and 36 families were recorded in the River. On the basis of availability, the recorded species were categorized into four statuses and obtained as available (43.86%), less available (29.82%), rare (18.42%) and very rare (7.89%). Result of the study identified nine species as very rare which may extinct near future resulting declination of the fish diversity. Overfishing, indiscriminate fishing of larvae and juveniles, siltation and pollution were identified as the major worries linked with the declination of fish diversity. Study suggested that the activities which have harmful impact on fisheries resources need to be decreased and should be restricted to save our valuable fish diversity in the Payra River.

Keywords: Coastal Rivers; Fish diversity; Conservation; Rules and regulations.

Location: Patuakhali, Bangladesh

Start Date: 00-04-2013

End Date: 00-03-2014

Program Area: Conservation and Biodiversity

Commodity: Fish

Objectives:

To present new data regarding to the clear understanding about the present status and current worries of fish diversity in the Payra river.

Methodology:

The present study was carried out in the Payra river of Patuakhali district. The river originated from the Tetulia river via the Karkhana river and finally falls into the Bay of Bengal by the name of Burishwar river. Its center lies at a latitude of 22º35? and longitude of 90º26? and it has an elevation of 1 meter above sea level. Payra river is also known as the Rajganj river. The total length of the river is approximately 45 kilometer and width is 1-1.5 kilometer. The study was conducted for a period of 1 year from April 2013 to March 2014. Freshly caught unsorted samples of different gears were collected monthly during daytime. All samples were preserved with crushed ice in fish box and brought to the laboratory as soon as possible. In the laboratory, ice preserved samples were washed with running tap water for removing dirt and then adhered water on the fish skin was absorbed by the tissue paper. For complete drying, fishes were finally placed in the room temperature for half an hour. Fish samples were sorted out and identified up to the species level based on morphometric and meristic characteristics. The species were categorized into 4 groups on the basis of catch records as follows- Available (A): species observed widely available throughout the year; Less Available (LA): species observed infrequently available; Rare (R): species observed periodically available; and Very Rare (VR): species observed fortuitously available. Necessary data and information regarding to fish diversity were collected from fishers, experienced person related to fisheries sectors and available literatures.

Source of Information: International Journal of Fisheries and Aquatic Studies 2015; 2(3): 160-165

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

The study is a preliminary attempt to understand the status and current worries of fish diversity of a major coastal river, Payra river, Bangladesh. Loss of many commercially important fish species is the current alarming issue and its conservation is the only solution for this problem. Though many rules and regulations for this river have been declared as conservation but due to the lack of proper scientific data-base, it is becoming more difficult to select proper management and conservation strategy. However, present study has revealed some recommendations like preventing water pollution, ensuring water flow, developing fishermen’s awareness, preventing indiscriminate fishing of larvae and juveniles, effective implementation of existing fisheries laws and declaration of fish sanctuary to save fish diversity of the Payra river. Extensive research is required to prepare better data-base information on biodiversity and fisheries with abundance problems aiming to develop practical rules and regulations.

Knowledge Management: Journal