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Physiological ecology of Patella. II. Effect of environmental acclimation on the metabolic rate
Published online by Cambridge University Press: 11 May 2009
Extract
The physiological basis for the previously reported differences in the rate of respiration between high-shore-level and low-level populations of Patella vulgata in the summertime has been investigated in relation to distribution differences between this species and P. aspera.
The respiration rate of both P. aspera and low-level P. vulgata is low in the winter but increases in the spring to a level which is maintained until the post-spawning period in the autumn. The respiration rate of high-level P. vulgata does not increase in the spring but remains at the low winter level. The inter-population difference in rate of respiration therefore appears in the spring and is maintained until the autumn.
The difference in rate of respiration cannot be accounted for by differences in the amount of non-respiring tissue in equal weight individuals and is phenotypic and not genotypic, as indicated by transplantation experiments. These experiments also rule out the possibility of differences in age of equal weight individuals from the two populations being responsible.
Respiration rate was found to be a function of both intertidal height and of the abundance of algal food in the habitat. It is suggested that the low-level population of P. vulgata should be regarded as the normal form and that the low respiration rate of high-level limpets in the summer represents a form of adaptation to the stresses of their habitat. It is possible that both nutritional level and temperature acclimation are important in this, and it is speculated that inability to reduce the level of metabolism may be one factor preventing the colonization of high-shore-level habitats by P. aspera.
- Type
- Research Article
- Information
- Journal of the Marine Biological Association of the United Kingdom , Volume 47 , Issue 1 , February 1967 , pp. 61 - 74
- Copyright
- Copyright © Marine Biological Association of the United Kingdom 1967
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