Fishery and biology of the green mussel, Perna viridis (Linnaeus)

The green mussel in the natural beds at Kakinada Bay attains an average length of 63 mm in 6 months, 92.2 mm in 1 year and 129 mm in 3 years. The mussel stock show a considerable variation from year to year, in spawning activity although it extends from December to July with peak activity in January to May. At Kakinada there appears to be no appreciable difference in the biological cycle of the farm grown mussels and those in natural beds