Fishery and stock assessment of the blood clam Anadara granosa (Linnaeus) from Kakinada Bay

Rao, G Syda and Somayajulu, K R (2006) Fishery and stock assessment of the blood clam Anadara granosa (Linnaeus) from Kakinada Bay. Indian Journal of Fisheries, 53 (2). pp. 203-209.

Preview

PDF a1.pdf Download (72kB)

Abstract

Landing and effort data of Anadara granosa (Linnaeus) from Kakinada Bay were collected for the years 1988 to 1991. The landings during 1988 were 802 tonnes compared to 1600 tonnes in 1991. The effort in 1988 was estimated at 32,458 man-days, which has increased by 1.7 times in 1991. However, catch rates showed a declining trend. There has been some change in the exploitation pattern. Younger size groups (<30 mm) are being exploited more, due to their higher price realization. Stock assessment attempted by Jones’ Cohort analysis and Thomson and Bell analysis showed that the current level of exploitation has already reached MSY level. There is scope to increase the yields by following 1990 pattern of exploitation. However, selective exploitation of A. granosa of > 30 mm, if continued may lead to declining yields over the years.

Actions (login required)

View Item