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First published online June 13, 2008
Journal of Experimental Biology 211, 2185-2190 (2008)
Published by The Company of Biologists 2008
doi: 10.1242/jeb.015420
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Oxygen consumption by a coral reef sponge

Eran Hadas1,2, Micha Ilan1 and Muki Shpigel3,*

1 Department of Zoology, Tel Aviv University, Tel Aviv, 69978, Israel
2 Inter-University Institute of Marine Sciences in Eilat, PO Box 469, Eilat, 88103, Israel
3 Israel Oceanographic and Limnological Research, National Center for Mariculture, Eilat, 88112, Israel


Figure 1
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  		Fig. 1. Negombata magnifica mean filtration rates maintained under three different water exchange rates. Error bars indicate standard error of the mean (s.e.m.) and different letters indicate statistically significant differences (P<0.05), N=7.

 

Figure 2
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  		Fig. 2. Negombata magnifica oxygen consumption as a function of sponge size, measured in a flow-through system. Bars indicate the s.e.m. (N=3). A linear regression model was fitted to the data: y=37.3x+56.9. r2=0.8, P<0.001, N=17.

 

Figure 3
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  		Fig. 3. Negombata magnifica respiration rates measured in an incubation chamber. Filled circles indicate measurements during the first 6 min when sponges were fully active; open circles indicate oxygen consumption rate after 15–25 min of incubation. Pairs of open and filled circles are connected with lines to emphasize that they represent consecutive measurements on the same sponge. N=9.

 

Figure 4
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  		Fig. 4. Negombata magnifica oxygen consumption rate at three activity levels (see text). The bars represent s.e.m. and different letters indicate significant difference (P<0.05) between the means of the treatments. N=7.

 

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© The Company of Biologists Ltd 2008