Vol. 3 No. 1
Study of aquatic biodiversity of Gharia beel of Bangladesh.
Abstract: A total number of 70 species of fishes, four species of prawn, one species of crabs and five species of reptiles were identified so far from the Gharia beel. About 11 types of fishing methods were found in operation. Increasing the rate of fishing pressure within five years by seine net (moshari jal) from 16.6 to 24.1% and gill net (current jal) from 23.5% to 36.1% were identified as detrimental gear killing including different species during spawning and post spawning periods. The increasing rate in exploitation of the water bodies a thread to aquatic biodiversity of the Gharia beel. The fisheries production of the Gharia beel declined dramatically over the last five (2001-2005) years. The total production of the beel was decreased from 104.65±5.50 to 48.03±2.97 mt within five years and the percentage of total production was sharply decreased from 21.88 to 59.25% over the same period. As a result, a number of commercial important fish species like as major carps, mohasher (Tot tor, Cyprinidae), nandina (Labeo nandina, Cyprinidae), sharpunti (Puntius sarana, Cyprinidae), Gajar (Channa marulius, Channidae) and reptiles (Kachuga kachuga, Chelonia and Morenia petersi, Chelonia) were extinct from the Gharia beel.
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