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

Effects of Stocking Density and Water Depth on the Growth and Survival of Mirror Carp Post-larvae

M.S. Mollah
Department of Aquaculture and Management, Bangladesh Agricultllral University Mymensingh-2202 Bangladesh.

M.A.A. Khan
Department of Aquaculture and Management, Bangladesh Agricultllral University Mymensingh-2202 Bangladesh.

J.A. Mirza
Department of Aquaculture and Management, Bangladesh Agricultllral University Mymensingh-2202 Bangladesh.

Abstract/ Executive Summary:

The growth and survival of post-larvae of mirror carp were studied in relation to stocking densities and depth of water. Results of the studies indicated that growth and survival of post larvae were significantly affected by stocking densities. The Interaction of stocking density and water depth had also significant effect on the survival rate of larvae. Sudden mortality of the try occurred after 10th day of stocking which was presumed to be due to lack of preferred food. Stocking density had profound affect on the growth rate of fish. Highest growth rate was recorded at low stocking density and lowest growth rate was recorded at high stocking density in all water depths. Significant differences in the rate of growth were obtained among the stocking densities. But among the water depth, growth of fishes at 1m depth was found to differ significantly than the rest of water depths.

Keywords: Mirror carp, Stocking densrty, Water depth

Location: Bhawal Fish Seed plant, Gazipur

Start Date: 00-01-1994

End Date: 00-02-1994

Program Area: Animal Health and Management

Commodity: Carp fish

Objectives:

To the survival rate of this species in relation to the stocking density, water depth and their interactions.

Methodology:

The present study was conducted at the Bhawal Fish Seed plant, Gazipur during January-February 1994. The experiment was performed in 3 nursery pond, each nursery ponds were partitioned into 9 smaller units by fixing hapa-type screen. In total 27 experimental units were available to conduct the study in split plot design. Water depth was considered as main-plot and stocking density as sub-plot. Three stocking densities (200000, 400000 and 600000 hatching/ha) were tested against three level of water depth (0.7. 1 and 1.3 m). Each treatment was replicated three times. Before stocking with 4 day old mirror carp hatchlings, the nursery ponds were prepared as per standard procedure, and there after the net enclosures (10 m² each) were established into the ponds to stock with the hatchlings. The experiment continued for 25 days. The survival rate and the growth of mirror carp post- larvae were recorded at day 7, 10, 13, 16, 20 and 25 after stocking. The percentage data were subjected to angular transformation before being used in statistical computation. One or two way analysis for ANOVA test were performed and DMRT was employed to compare the treatment means.

Source of Information: Bangladesh J. Agril. Sci. 25(2): 223-227, July, 1998

Article Link (Online Journal):

Funding Source:

Budget:

Total Budget (Tk.) :

Achievement/Findings:

Stocking density had profound affect on the growth rate of fish. Highest growth rate was recorded at low stocking density and lowest growth rate was recorded at high stocking density in all water depths. Significant differences in the rate of growth were obtained among the stocking densities. But among the water depth, growth of fishes at 1m depth was found to differ significantly than the rest of water depths.

Knowledge Management: Journal