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 the Growth Parameters of Hilsa at Chandpur Region in Different Season

Bijon Kumar Dewan
Department of Fisheries Technology, Bangladesh agricultural university, Mymensingh, Bangladesh

Md. Sumon Mia*
Department of Fisheries Management, Bangladesh agricultural university, Mymensingh, Bangladesh

Farida Yeasmin
Department of Fisheries Management, Bangladesh agricultural university, Mymensingh, Bangladesh

Flura
Bangladesh Fisheries Research Institute, Riverine Station, Chandpur-3602, Bangladesh

Debashis Kumar Mondal
Scientific Officer
Bangladesh Fisheries Research Institute, Freshwater sub-station, Jessore, Bangladesh

Md. Kamal
Department of Fisheries Technology, Bangladesh agricultural university, Mymensingh, Bangladesh

Abstract/ Executive Summary:

A survey was also conducted on the growth parameters (length and weight) of hilsa at Chandpur region. The length and weight of a large number of samples was analyzed in this study to observe the appreciable changes that might have occurred in response to different months. Data from primary source (landing station) was collected for growth study. On growth study, the highest average length found in month June (38.66 cm) and lowest average length found in month November (33.77 cm). The highest average weight found in month June (603.83 gm) and lowest average weight found in month November (445.13 gm). The length and weight of a large number of samples was analyzed in this study to observe the appreciable changes that might have occurred in response to different months. The study deserves further survey in different places of Bangladesh. However, the study will help in formulating management and conservation policies as well as in the further development of the fishery for this species in Bangladesh.

Keywords: Tenualosa ilisha, Growth performance

Location: Chandpur region, Bangladesh

Start Date:

End Date:

Program Area: Animal Health and Management

Commodity: Hilsa

Objectives:

The present study was undertaken to know the size groups of Hilsa fish in different seasons for better understanding the sociological, economic and social variables in the exploitation of this fishery resource.

Methodology:

Collection of sample: Fresh Hilsa shad Tenualosa ilisa were procured from Chandpur Landing Center during June-December, 2009. The fish were packed in layered ice (1:1, w/w) in a polystyrene insulated box and transported to the Bangladesh Agricultural University, Mymensingh. The box was provided with holes at the bottom to drain out melting water and stowed the box of a bottom layer of about 5 cm. in crushed ice and then layers of fish sprinkled with ice and a top layer of about 5 cm. of ice again. The data was collected unbiased way from different shops of landing stations. These samples of T. ilisha were mainly caught by gill net. The data were then pooled monthly from landing site. Preparation of sample The collected fish samples were washed properly with fresh water to remove all dirt, slime, and unnecessary particles. Then the fishes were separated according to size. The different size groups were categorized according to length and weight. Jatka (Length: <23cm, Weight: 10 to 130 gm); Sub-adult (Length: 24 to 37 cm, Weight: 150 to 600 gm); Adult (Length: 38 cm and above, Weight: 700 gm and above) and Brood (Length: 38 cm and above, Weight: 700 gm and above).Then each category fish was cut by sharp knife and ground in a mechanical grinder to make a paste. This ground sample was used for further biochemical analysis. In second step, white muscle, dark muscle and viscera were collected from adult fish. The samples were then ground in a mechanical grinder to make a paste. This ground sample was used for further biochemical analysis.

Measuring of length and weight The total length of fish were measured in the size range 19.0 to 48.0 cm using a meter scale (1+mm) and weighed using a Salter spring balance. The length was measured thoroughly and more than 200 data was collected in every month. Length-frequency analysis Length-frequency analysis was done by using data of length which is subsequently grouped into classes of two centimeter intervals. It was done in every month and then represent graphically. Average length Average length was determined by calculating average length from 200 fish in every month and then compiling the data in a table and then the average length was representing graphically. Length-frequency analysis was done by using data of length which is subsequently grouped into classes of two centimeter intervals. Average weight Average weight was determined by calculating average weight from 200 fish in every month and then compiling the data in a table and then the average weight was representing graphically.

Article Link (Online Journal):

Funding Source:

1.

Budget:

Total Budget (Tk.) :

Achievement/Findings:

The length and weight of a large number of samples were analyzed in this study to observe the appreciable changes that might have occurred in response to different months. However, in the present study, both the average length and weight were found to be highest in the samples collected in June and lowest in of November. Further studies are needed to collect more data from different areas of Bangladesh in order to formulate effective policies for the development of the fishery for this species in Bangladesh.

Knowledge Management: Journal