Publication Abstract

Size composition and pot selectivity in the lobster, Homarus gammarus, and crab, Cancer pagurus, fisheries on the east coast of England

Size composition and pot selectivity in the lobster, Homarus gammarus, and crab, Cancer pagurus, fisheries on the east coast of England

J.T. Addison

The size composition of lobsters and crabs caught in the north Norfolk fishery differs markedly from that of other parts of the east coast of England. Previous studies indicated that substrate type and pot selectivity, in addition to the pattern of exploitation, account for the small individuals caught in Norfolk. Experimental fishing comparing fine-meshed small-ranged Norfolk pots and Yorkshire parlour pots was carried out off Cromer in north Norfolk and in Bridlington Bay, Yorkshire. Analysis of size composition of catches showed that both lobsters and crabs retained by the Norfolk pots were significantly smaller than those retained by the Yorkshire pots. The smaller size composition of lobsters caught in the Norfolk fishery was partially attributable to pot selectivity and partially due to real differences in size composition of the populations on the ground. For crabs there was little or no difference between the Norfolk and Bridlington Bay fisheries when the effect of pot selectivity was equal in the two areas.

Reference:

J.T. Addison, 1991. Size composition and pot selectivity in the lobster, Homarus gammarus, and crab, Cancer pagurus, fisheries on the east coast of England. ICES Journal of Marine Science, 48: 79-90.

J.T. Addison*

ICES Journal of Marine Science, 48: 79-90