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Articles by Ahasan Habib
Total Records ( 2 ) for Ahasan Habib
  Mir Mohammad Ali , M. Belal Hossain , Md. Aowsafur Rahman and Ahasan Habib
  Chitra river is an important water body in Southwestern Bangladesh in terms of fish production. Fisheries resources in this river are on the decline due to over exploitation, manmade pollution and inadequate management of inland waters. The present study was conducted to explore the diversity and to check the conservation status of fish fauna in the Chitra river. Fish samples were collected fortnightly from seven sampling stations of the Chitra River at Jessore district in Southwestern Bangladesh during August 2011 to July 2012. A total of 53 species of fish under 10 orders and 23 families were recorded. Cypriniformes were most leading order constituting 33.96% of the total fish population followed by Siluriformes (22.64%), Perciformes (24.53%), Clupeiformes (1.89%), Synbranchiformes (5.66%), Osteoglossiformes (1.89%), Beloniformes (1.89%), Mugiliformes (3.77%), Anguiliformes (1.89%) and Tetraodontiformes (1.89%). Fishes in this river is seriously affected by the various kinds of human development interventions and activities, especially in the areas of agriculture, forestry, fisheries, urbanization, industries, chemicals, minerals, transport and tourism. Estimates from these indices were indication of low fish species composition and richness and unevenness in the population of fish in river Chitra. For sustainability of fishery resources, an adequate knowledge of species composition, diversity and relative abundance of water bodies must be understood and vigorously pursued. Therefore, there is a need for the conservation and sustainable management of the fisheries resources of Chitra water body by relevant agencies.
  Ahasan Habib , Nani Gopal Das and M. Belal Hossain
  The efficiency of probiotics (Ecomarine) in rearing of Macrobrachium rosenbergii larvae was evaluated in a commercial prawn hatchery for five weeks. Stage-1 (zero age) larvae (of length: 2 mm; weight: 0.12 mg) were stocked at the rate of 100 L-1. The experiment determined the growth rate, survival rate of the larvae for the both treatment and control groups. Final average weight were found 8.39±3.28E-04 and 8.18±2.86E-04 mg and length were found 9.08±0.649 and 9.02±0.081 mm for treatment and control group respectively. Comparatively higher growth performance was observed in treatment than control. Post Larvae (PL) was first observed 20th days of culture in treatment tanks whereas PL in control tanks was found 24th days of culture. Survival rate was found 58 and 46% in treatment and control group respectively. There was significant (p<0.05) survival rate between two experiment groups. This study revealed that probiotics could be better in quality seed production of M. rosenbergii while significant changes were not noticed in the physic-chemical parameters i.e., water temperature, salinity, DO, pH, nitrate-NO2, hardness and alkalinity observed in both the treatments.
 
 
 
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