QUICK SEARCH:   [advanced] Author: Keyword(s):
Home     Help     Feedback     Subscriptions     Archive     Search     Table of Contents

This Article Full Text (PDF) Alert me when this article is cited Alert me if a correction is posted Services Email this article to a friend Similar articles in this journal Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via HighWire Citing Articles via Google Scholar Google Scholar Articles by BUSHNELL, P. G. Articles by JOHANSEN, K. Search for Related Content PubMed Articles by BUSHNELL, P. G. Articles by JOHANSEN, K.

Journal of Experimental Biology 113,225-235 (1984)
Published by Company of Biologists 1984

Oxygen Consumption and Swimming Performance in Hypoxia-Acclimated Rainbow Trout Salmo Gairdneri

P. G. BUSHNELL ¹, J. F. STEFFENSEN ², and K. JOHANSEN ²

¹ Department of Zoophysiology, University ofArhus, DK-8000 Arhus C, Denmark.; Department of Physiology, John A. Burns School of Medicine, University of Hawaii: 1960 East West Road, Honolulu, Hi 96822, U.S.A.
² Department of Zoophysiology, University of Århus DK-8000 Århus C, Denmark

1. Swimming performance and oxygen consumption of normoxic (control) and hypoxia-acclimated (P₀₀₂=40 mmHg) rainbow trout, Salmo gairdneri Richardson, were monitored at >145, 60 and 40mmHg.

2. Maximum swimming velocity at 40mmHg was reduced from >54.8cm s^-1 to 41.4cm s¹ in controls and to 40.6 cm s^-1 in hypoxiaacclimated fish.

3. Normoxic oxygen consumption of control fish ranged from 97.5 mg O₂ kg^-1 h^-1(5.5cm s^-1) to 318.5 mg O₂ kg^-1 h^-1 (54.8 cm s^-1) and did not differ significantly from that of hypoxia-acclimated fish in normoxia.

4. Reduction of ambient P₀₀₂ from normoxia to 60mmHg or 40mmHg did not significantly change oxygen consumption in control animals, although no fish (control or hypoxia acclimated) completed swimming trials at 54.8cm s^-1 in 40mmHg.

5. Oxygen consumption of hypoxia-acclimated fish at 5.5cm s^-1 and 40 mmHg was significantly higher than oxygen uptake in normoxia at the same speed. This relative increase was not maintained, however, as oxygen consumption at higher swimming speeds was similar to that in normoxia.

6. Blood studies showed that hypoxia-acclimated fish had lower ATP concentrations and P₅₀ values. While these factors may increase the blood oxygen loading capacity, the change is apparently not enough markedly to improve swimming performance or oxygen consumption in hypoxia and/or exercise.

Key words: Hypoxia acclimation, oxygen uptake, rainbow trout

Accepted on April 11, 1984

This article has been cited by other articles:

				M. L. Martinez, C. Landry, R. Boehm, S. Manning, A. O. Cheek, and B. B. Rees Effects of long-term hypoxia on enzymes of carbohydrate metabolism in the Gulf killifish, Fundulus grandis J. Exp. Biol., October 1, 2006; 209(19): 3851 - 3861. [Abstract] [Full Text] [PDF]

				A. K. Gamperl and A. P. Farrell Cardiac plasticity in fishes: environmental influences and intraspecific differences J. Exp. Biol., July 1, 2004; 207(15): 2539 - 2550. [Abstract] [Full Text] [PDF]

				K. E. Korsmeyer, J. F. Steffensen, and J. Herskin Energetics of median and paired fin swimming, body and caudal fin swimming, and gait transition in parrotfish (Scarus schlegeli) and triggerfish (Rhinecanthus aculeatus) J. Exp. Biol., May 1, 2002; 205(9): 1253 - 1263. [Abstract] [Full Text] [PDF]

				C Sepulveda and K. Dickson Maximum sustainable speeds and cost of swimming in juvenile kawakawa tuna (Euthynnus affinis) and chub mackerel (Scomber japonicus) J. Exp. Biol., January 10, 2000; 203(20): 3089 - 3101. [Abstract]