| Author: | |
| Roll: | ASH060203M |
| Batch | 1st batch |
| Session | 2005-6 |
Abstract:
A study was conducted at Hatiya Upazilla and Nijhum Dwip, Noakhali in mid costal region of Bangladesh to identify weather it is feasible or not for mud crab culture. Average yearly collection of crabs in this area is about 890.36 tons where lower grade male crabs (100-299 g) constitute about 17.31% and lower grade female crabs (120-179 g) constitute about 27.85%. Those can be brought under culture practice. There are three canal systems in Hatiya Upazilla, which are about 670 ha. in area, saline water intrusion is evident through this canal system. In Nijhum Dwip, vast inundated area with saline water is found. So in Hatiya Upazilla and Nijhum Dwip coastal people can easily use these huge sources of water for crab culture. Overall water salinity range from 0-10 ppt, pH range of 7.8-8.6 and the soil is silty-loam. The average temperature of the last three years was approximately 26.10 °C. Average temperature was lower in the months of December – February. During the months of March – October temperature was above 25 °C. Rainy season occurred at June September, winter at November – January and summer at February – May. Therefore, March to July is the suitable season of crab culture in this area. Natural feeds are also available in this area. There exists a small marketing channel with 3-4 number of middle-man. The collected total crabs are supplied to Dhaka from Tomuruddin Ghat Steamer, launch are the main vehicles of transportation. Some also transport via Noakhali sadar and some via Laxmipur, Chadpur districts. So a potential marketing system also exists here. So present study revealed that this area in mid coastal region of Bangladesh is suitable for crab culture during the month of March to July