Letter | Published:

Effect of Photoperiod on the Oxygen Consumption of Two Species of Intertidal Crabs

Abstract

LIGHT as an environmental parameter has been given slight consideration with respect to its effect on rate functions of intertidal marine invertebrates. Prosser1 has mentioned a few examples where light has been considered as a limiting factor. Most of these examples have concerned vertebrates. Recently, Hoar2 demonstrated that different light periods affected thermal resistance in goldfish. Short-day (8 hr.) photoperiod fish were more resistant to cold than long-day (16 hr.) ones. The reverse was true for heat adaptation.

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References

  1. 1

    Prosser, C. L., Biol. Rev., 30, 229 (1955).

  2. 2

    Hoar, W. S., Nature, 178, 364 (1956).

  3. 3

    Wennesland, R., Science, 114, 100 (1951).

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