Updated model of the revised South African sardine stock structure hypothesis, with initial results.

The model of the revised South African sardine stock structure hypothesis has been updated. The model allows for two stocks (Warm Temperate Sardine and Cool Temperate Sardine), distributed between two areas (the west and south coasts of South Africa, separated at Cape Agulhas) with sardine growth dependent not only on the individual’s current location, but also the duration of time (if any) that they have previously spent distributed off the west coast. These results give positive indications that the revised hypothesis is able to fit the data available at this time.