ADVANCES IN THE LABORATORY CULTURE OF OCTOPUSES FOR BIOMEDICAL-RESEARCH

  • 1 January 1985
    • journal article
    • research article
    • Vol. 35  (1) , 33-40
Abstract
Five spp. of Octopus were cultured in pilot, large-scale 2,600 l recirculating seawater systems. Improvements in system design, water management and culture methodology were described. These 5 spp. all produced large eggs and correspondingly large hatchlings that had no planktonic or larval stage and thus were easier to culture. Octopuses grew well only when fed live marine crustaceans, fish and other mollusks. Growth occurred as a 4-7% increase in body weight per day during the early exponential growth phase and 2-4% during the latter 1/2 to 3/4 of the life cycle, which ranged from 6-15 mo. depending upon species. All species reproduced in captivity. Survival was 70-80% when octopuses were reared in individual containers, but in group culture survival dropped to as low as 40% by the adult stage. Causes of mortality were species-specific and included hatchling abnormalities, escapes, aggression, cannibalism, disease, senescence and laboratory accidents. Octopus bimaculoides showed superior qualities for laboratory culture. The future potential of providing American scientists with laboratory-cultured octopuses was discussed along with their uses in biomedical research.