Comparing oxygen uptake rates of driftwood and wrack generalist talitrid amphipods

Rates of oxygen consumption in seawater standardized for size (mass or body length) were compared for a representative supralittoral, wrack generalist talitrid - Platorchestia platensis and a representative driftwood, specialist talitrid - Macarorchestia remyi. Oxygen consumption in seawater was sig...

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Bibliographic Details
Published in:Marine and freshwater behaviour and physiology 2018-05, Vol.51 (3), p.203-211
Main Authors: Wildish, David J., Pavesi, Laura, Robinson, Shawn M. C.
Format: Article
Language:English
Subjects:
Adaptation
Aquatic crustaceans
Body length
Body size
Driftwood
driftwood talitrid dwarfism
Dwarfism
Growth rate
Macarorchestia remyi
Metabolic rate
Metabolic rates
metabolic theory of ecology
Metabolism
Microcerberus remyi
Oxygen
Oxygen consumption
Oxygen uptake
Platorchestia platensis
Seawater
Uptake
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Summary:Rates of oxygen consumption in seawater standardized for size (mass or body length) were compared for a representative supralittoral, wrack generalist talitrid - Platorchestia platensis and a representative driftwood, specialist talitrid - Macarorchestia remyi. Oxygen consumption in seawater was significantly less in M. remyi. This confirms the view that a reduced standard metabolic rate, and consequent reduction in growth rate and final size achieved, was an important physiological mechanism involved in dwarfism and adaptation to driftwood in M. remyi. Reduced standard metabolic rate in driftwood specialist talitrids is contrary to the metabolic theory of ecology.
ISSN:1023-6244
1029-0362
DOI:10.1080/10236244.2018.1521701