The Effects of Reduced Gill Area and Hyperoxia on the Oxygen Consumption and Swimming Speed of Rainbow Trout | Zendy

Garry G. Duthie | Zendy; G. M. Hughes | Zendy

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The Effects of Reduced Gill Area and Hyperoxia on the Oxygen Consumption and Swimming Speed of Rainbow Trout

Author(s) -

Garry G. Duthie,

G. M. Hughes

Publication year - 1987

Publication title -

journal of experimental biology

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.367

H-Index - 185

eISSN - 1477-9145

pISSN - 0022-0949

DOI - 10.1242/jeb.127.1.349

Subject(s) - rainbow trout , hyperoxia , gill , oxygen , fish <actinopterygii> , trout , fishery , zoology , biology , chemistry , anatomy , organic chemistry

Rainbow trout with a cautery-induced 30% reduction in functional gill area showed significant proportional reductions in maximum oxygen consumption (Voo2max) in comparison to controls, but oxygen consumption at rest and at subcritical swimming speeds was not affected. This corroborates suggestions that total gill area is utilized for oxygen uptake only under conditions of maximum aerobic demand. During swimming trials, hyperoxia (POO2 300mmHg) neither increased VOO2max of control fish nor compensated for the reduced VOO2max apparent in fish with reduced gill area. Therefore a direct limitation on oxygen uptake at the gills is implied.

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