Edible oyster resources of Ennore estuary and Muttukadu backwater, Madras

Abstract

Survey conducted of the standing crop of edible oyster Crassostrea madrasensis papulation in Ennore Estuary and Muttukadu Backwater Indicated the existence of beds in both areas- At Ennore, the oyster beds are located over a distance of 2 km extending to 1 km on either side of the railway bridge. An oyster bed present below the Ennore railway bridge is the largest with an area of 40 ha and the population of oysters is dense In its eastern portion. The other beds are small. At Muttukadu, the oyster beds are present from the mouth of the backwater to the road bridge near Fisherman's Cove Hotel A bed on the western side of bridge is the biggest one In the backwater and Is 2.6 ha In area. Environmental factors play significant role in limiting the distribution of oysters in both areas. Exploitation of oyster beds in Ennore Estuary and Muttukadu backwater is limited. Shells are utilized for lime preparation and meat for local consumption.