V 7 



ETHER ONLY 



HALIMEDATRIAL 

 IN ETHER 



DURATION = l-7h 



CONCENTRATION = 1% OF WET MASS 



50 



£40 



cc 

 o 



Q_ 



o 



<I 



C_> 



30- 



20' 



10 







SURGEONFISHES 



PARROTFISH 



N = 10 pairs 

 P=.025 



CO 

 CO 



< 



40l 



30- 



20 



10 







N=I4 pairs 

 P=.005 



Figure 9. The effects of halimedatrial on feeding by herbivorous 

 parrotfish and surgeonf ishes. Statistical evaluations are 

 by Wilcoxon Paired-Sample Test. The seagrass Thalassia 

 testudinum was usedas the assay seaweed in tests with the 

 parrotfish; the red alga Acanthophora spicifera was used in 

 tests with surgeonf ishes. 



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