• Metabolic rates and quotients in the cichlid fish,Tilapia mossambica (Peters) in relation to random activity

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    • Keywords


      Standard metabolic rate; routine metabolic rate; respiratory quotient; ammonia quotient; random activity; Tilapia mossambica

    • Abstract


      Oxygen consumption, carbon dioxide production and NH3-N excretion increased with increase in random (spontaneous) activity inTilapia mossambica in air-saturated water in tests at 30 and 35° C. The random activity change did not affect the RQ which remained near unity at adequate ambient oxygen. But, the AQ decreased with increase in activity at both 30 and 35° C, suggesting that increased protein utilization in quieter fish when adequate ambient oxygen is available. The routine and standard metabolic rates at 35° C are slightly higher than at 30° C, but, in general, the overall metabolic rates and quotients are significantly in close proximity, suggesting that the temperature range (30–35° C) does not seem to cause a marked metabolic difference inTilapia mossambica.

    • Author Affiliations


      M Peer Mohamed1

      1. Central Inland Fisheries Research Substation, 24, Pannalal Road, Allahabad - 211 002, India
    • Dates


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