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First published online February 27, 2009
Journal of Experimental Biology 212, 778-784 (2009)
Published by The Company of Biologists 2009
doi: 10.1242/jeb.026575
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Hemoglobin enhances oxygen uptake in larval zebrafish (Danio rerio) but only under conditions of extreme hypoxia

Peter Rombough* and Holly Drader

Department of Biology, Brandon University, Brandon, MB, Canada R7A 4X8


Figure 1
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  		Fig. 1. Changes in body mass with age of the zebrafish larvae used in this experiment. Values are means ± 95% confidence interval (CI). dpf, days postfertilization.

 

Figure 2
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  		Fig. 2. Effect of CO exposure on the routine metabolic rate (A), critical oxygen level (B) and total conductance (C) of zebrafish larvae. Values are means ± 95% CI.

 

Figure 3
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  		Fig. 3. Allometric scaling for routine metabolic rate of CO-exposed and control zebrafish larvae. b is the mass exponent for the line of best fit for all trials combined.

 

Figure 4
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  		Fig. 4. Residual oxygen tension for zebrafish larvae at various ages. Values are means ± 95% CI. The asterisks indicate a significant difference from same age controls (P<0.05).

 

Figure 5
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  		Fig. 5. Comparison of routine metabolic rates (nmol O2 h–1) for control larvae in this experiment with literature reports of routine metabolic rates for zebrafish larvae.

 

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© The Company of Biologists Ltd 2009