FT Vol.15(1)

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    ACTIVATION MECHANISM OF PRE-PHENOLOXIDASE IN LOBSTER AND SHRIMP.
    (Society of Fisheries Technologists (India) Cochin, 1978) SA V AGAON, K. A; SREENIVASAN, A
    Phenoloxidase in shrimp and lobster is shown to exist in latent form which could be activated by trypsin and by an endogenous enzyme with ,tryptic activity. On Sephadex G-100 gel, three isoenzymes, differing in molecular weights, were isolated from naturally activated lobster shell extracts. Mechanism of activation of ptephenoloxidase involving limited proteolysis by the activating enzyme to form isoenzymes has been proposed.
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    On the Trend of Prawn Catch of Paradeep
    (Society of Fisheries Technologists (India) Cochin, 1978) BISWAS, K. P
    The distribution and landings of important varieties of prawns off Paradeep coast, Orissa, in relation to the climatic and hydrographic conditions from 1970-1976 are presented. The prawn fishery as a whole, showed a quadrennial cycle along the coast. The post-monsoon migration of all varieties of prawns along the coast directly depends on the annual precipitation. Temperature gradient, fluctuations in salinity and southerly wind in the Bay of Bengal influence the migration of the different species of prawns.