Oxygen consumption, ammonia excretion and random activity in Penaeus semisulcatus, Macrobrachium malcolmsonii and Paratelphusa hydrodromus with reference to ambient oxygen

Laxminarayana, A and Kutty, M N (1982) Oxygen consumption, ammonia excretion and random activity in Penaeus semisulcatus, Macrobrachium malcolmsonii and Paratelphusa hydrodromus with reference to ambient oxygen. In: Proceedings of the Symposium on Coastal Aquaculture, Part 1, MBAI, 12-18 January 1980, Cochin.

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    Abstract

    Oxygen consumption, ammonia excretion and random activity in relation to ambient oxygen have been investigated in a marine prawn, Penaeus semisulcatus, a freshwater pravm, Macrobrachium malcolmsonii and a freshwater crab, Paratelphusa hyiirodromus. At normoxia, P. semisulcatus maintained an ammonia quotient (A.Q.=volume or mole; mole relation of ammonia excreted to oxygen consumed) of about 0.06, M.malcoimsonii maintained an A.Q. of about 0.08 and P. Hydrodromus an A.Q. of about 0.2s. Under hypoxic conditions all these three crustaceans showed high ammonia quotients. The 2 to 5 fold increase in A.Q. values in hypoxic conditions indicates increased protein degradation and may be of value in combating acid base balance as in the case of fishes. The random activity increased in hypoxic conditions in the case of P. semisulcatus and M. malcolmsonii whereas in the case of P. hydrodromus the activity decreased in hypoxic conditions indicating a dichotomy in behaviour which appears to have ecological significance. The metabolic rate decreased in hypoxic conditions in all the three species.

    Item Type: Conference or Workshop Item (Paper)
    Uncontrolled Keywords: Oxygen consumption; ammonia excretion; Penaeus semisulcatus; Macrobrachium malcolmsonii; Paratelphusa hydrodromus
    Subjects: Crustacean Fisheries > Prawn and Prawn fisheries
    Divisions: CMFRI-Kochi > Mariculture Division
    Subject Area > CMFRI > CMFRI-Kochi > Mariculture Division
    CMFRI-Kochi > Mariculture Division
    Subject Area > CMFRI-Kochi > Mariculture Division

    CMFRI-Kochi > Marine Capture > Crustacean Fisheries Division
    Subject Area > CMFRI > CMFRI-Kochi > Marine Capture > Crustacean Fisheries Division
    CMFRI-Kochi > Marine Capture > Crustacean Fisheries Division
    Subject Area > CMFRI-Kochi > Marine Capture > Crustacean Fisheries Division
    Depositing User: Mr. Arun Surendran
    Date Deposited: 18 Aug 2010 20:21
    Last Modified: 09 Sep 2015 15:16
    URI: http://eprints.cmfri.org.in/id/eprint/2256

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