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The influence of ambient salinity on routine metabolism in the teleost Cyprinodon variegatus Lacepède

F.G. Nordlie·S. J. Walsh·D. C. Haney·T.F. Nordlie
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Abstract

Routine metabolism of the euryhaline cyprinodontid Cyprinodon variegatus Lacepede was measured at a series of ambient salinities ranging from fresh water through 100‰. Fish used had been sequentially acclimated to the test salinities (ambient temperature of 20±1° C and a 12: 12 L: D schedule). Routine metabolic rates were highest at ambient salinities from 15 to 50‰. Metabolism was somewhat lower at ambient salinities less than 15‰, and showed a sequential decline at ambient salinities greater than 50‰. It is suggested that routine metabolism is depressed at elevated salinities by reduced O, transfer, a consequence of maintenance of hydromineral balance in hypersaline waters.

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F.G. Nordlie, S. J. Walsh, D. C. Haney, T.F. Nordlie. 2006-01-24. The influence of ambient salinity on routine metabolism in the teleost Cyprinodon variegatus Lacepède. https://doi.org/10.1111/j.1095-8649.1991.tb03097.x

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