Data available for input to an Age Structured Production Model of the Tristan lobster fishery.

<p dir="ltr">An age-structured production model (ASPM) is developed for the rock lobster populations at each of the four islands of the Tristan da Cunha group (Tristan, Inaccessible, Nightingale and Gough Islands).</p><p dir="ltr">The ASPM model is sex-disaggregated as there are substantial differences in growth rates and hence lengths at age between the sexes.</p><p dir="ltr">The model is fit to GLM- or GLMM-standardised longline CPUE and catch-at-length data. A catch series for each island is used. Although commercial harvesting first began in 1949, the ASPM models are run from 1990 because of considerable uncertainties regarding pre-1990 catches and related problems encountered with model-fitting when the models are initiated in 1949.</p>