The growth of Mytilus edulis from Carlingford Lough

The growth of Mytilus edulis at five stations in Carlingford Lough and two in Belfast Lough was calculated from annually produced growth rings. These rings were shown to be annual from measurements of the seasonal growth of marked animals on the shore. Shell tissue ratios were found to vary from station to station. Variations in growth are discussed in relation to sea temperatures, breeding cycles, salinity, pollution and level on the shore