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First published online December 16, 2008
Journal of Experimental Biology 212, 50-55 (2009)
Published by The Company of Biologists 2009
doi: 10.1242/jeb.019778
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Swimming for your life: locomotor effort and oxygen consumption during the green turtle (Chelonia mydas) hatchling frenzy

David T. Booth

The University of Queensland, Physiological Ecology Group, School of Integrative Biology, Qld 4072, Australia


Figure 1
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  		Fig. 1. Schematic diagram of the experimental set up used to simultaneously measure the oxygen consumption and swimming effort of hatchling green turtles.

 

Figure 2
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  		Fig. 2. Oxygen consumption, mean swim thrust and thrust production efficiency during the first 18 h of frenzy swimming of green turtle hatchlings from the Heron Island rookery. To generate each data point, the average oxygen consumption, swim thrust or thrust production efficiency of the five hatchlings was calculated for the previous 2 min, and then the mean of these five averages was taken to give an overall mean. Thin lines represent ±1 s.e.m.

 

Figure 3
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  		Fig. 3. Mean swim thrust plotted against mean oxygen consumption for swimming green turtle hatchlings. Plotted data are sourced from Fig. 2. Pearson product-moment correlation R2=0.98, P<0.001. The time intervals when data were collected are indicated at the bottom of the plot.

 

Figure 4
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  		Fig. 4. Plot of stroke rate during a power stroking bout, mean maximum thrust per power stroking bout and the proportion of time spent power stroking during the first 18 h of frenzy swimming of green turtle hatchlings from the Heron Island rookery. To generate each data point, the average stroke rate during a power stroking bout, mean maximum thrust and the proportion of time spent power stroking for each of the five hatchlings were calculated for the previous 10 min, and then the mean of these five averages was calculated to give an overall mean. Thin lines represent ±1 s.e.m.

 

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© The Company of Biologists Ltd 2009