Age and growth modelling of the southern geoduck Panopea abbreviata of Puerto Lobos (Argentina).

MORSAN, ENRIQUE; CIOCCO, NÉSTOR F.

FISHERIES RESEARCH

Elsevier

Lugar: Aberdeen, Escocia; Año: 2004 vol. 69 p. 343 - 348

0165-7836

Panopea abbreviata is geoduck, endemic to the SW Atlantic, distributed from 23◦ S to 48◦ S in shallow to 75-m-depth sandy and muddy bottoms. The species is the target of an experimental fishery in San Matias Gulf (40◦50 ?42◦05 S and 63◦?65◦05. W). Studies on population dynamics and growth has not been reported. Age and growth parameters for in 100 individuals were determined using samples from Puerto Lobos (42º00` S, 65º05` W; 15m depth). Patterns of growth bands observed in thin sections of valves allowed us to establish a longevity of 40 years. Basing on the degree of transparency of the shell margins of young (