Papers

EFFECT OF PRACTICING OPTIMUM STOCKING MODEL ON FISHERMEN'S ACCESS INTO THE LARGE WATER BODIES (Pages : 28 - 33)

ALAM, M.H., SAROWER, M.G., RAHMAN, M.A.

The main purpose of the study is to quantifying the relationship between fishermen’s stocking and cost decisions towards the output measure or yield-kg into the Large Water Bodies (LWBs). The duration of the study covered a period of over 48 months (4 years), financial years 2000-01 to 2003-04. One privately managed large water body (PMLWB) namely Morshina, Keshobpur Upazilla; one Government managed large water body (GMLWB) namely Kathgora, Chowgacha upazilla and the last but the least, community managed large water body (CMLWB) namely Purakali, Avoynagar Upazilla were taken for this study through randomly basis. The LWBs were taken from the mentioned different upazillas of the same district namely Jessore. The CMLWB was taken as experimental and the rests were taken as control water bodies. Optimum Stocking Model (OSM) was only practiced in CMLWB but into the rests stocking practices were commonly conducted. Different physical and limnological parameters were taken to analyze optimum stocking condition of the large water body. These included secchi disc depth (cm), standard water area (ha), stocking density (fingerlings/ha), yields of cultured species (kg/ha). In a culture based fisheries exploitation of a semi-closed water body, one of the few management tools available is the stocking strategy; i.e., choice of fish species stocked, fingerling stocking weight, stocking density (total and by species), the time of stocking and the last but not the least targeted sales volume. Among all LWBs in CMLWB highest result of carp yield was found in the year 2003-04 among the all LWBs, 1354.89 kg/ha at a stocking density 3148 fings/ha, standard water area 55.08 ha and secchi depth 49.90 cm. Comparing year wise yields it was found that the linear relationship of stocking density and yields existed up to the limit of stocking density 3148 fings/ha in CMLWB. After that yields were decreased in terms of increased stocking density. Following Cost Volume ProfDownload


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