Responses by fishes to environmental hypoxia: integration through Fry's concept of aerobic metabolic scope

The problem of understanding the effect of the environment on fish activities and performance, in any generalized way, remains intractable. Solving this issue is, however, a key to addressing contemporary environmental concerns. As suggested 20 years ago by W. H. Neill, the authors returned to the d...

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Bibliographic Details
Published in:Journal of fish biology 2016-01, Vol.88 (1), p.232-251
Main Authors: Claireaux, G., Chabot, D.
Format: Article
Language:English
Subjects:
Animals
Biodiversity and Ecology
cumulative oxygen deficit
dissolved oxygen
Environment
Environmental Sciences
Fishes - physiology
Hypoxia
O2crit
oxy-conformer
oxy-regulator
Oxygen
Oxygen - metabolism
Oxygen Consumption
scope for survival
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Summary:The problem of understanding the effect of the environment on fish activities and performance, in any generalized way, remains intractable. Solving this issue is, however, a key to addressing contemporary environmental concerns. As suggested 20 years ago by W. H. Neill, the authors returned to the drawing board, using as a background the conceptual scheme initially proposed by F. E. J. Fry. They revisited the effect of ambient oxygen availability upon fish metabolism and clarified the definitions of limiting, critical and incipient lethal oxygen (ILO) levels. The concepts of oxy‐conformer and oxy‐regulator are revisited, and P. W. Hochachka's idea of scope for survival is explored. Finally, how the cardiovascular system contributes to the capacity of fishes to respond to the reduced oxygen availability is considered. Various hands‐on recommendations and software (R scripts) are provided for researchers interested in investigating these concepts.
ISSN:0022-1112
1095-8649
DOI:10.1111/jfb.12833