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Table 1.

Zebrafish (Danio rerio) are deterred by some sponge chemical defenses

Test compoundConcentration (mg ml–1)*Test pelletPellets eatenPellets rejectedResult
Formoside 15.8 [15.0 mmol l–1Treatment 10 Rejected (P<0.01) 
  Control 10  
Sceptrin 1.0 [1.6 mmol l–1Treatment Accepted (P=0.24) 
  Control  
 5.0 [8.1 mmol l–1Treatment Rejected (P<0.01) 
  Control  
Oroidin 5.0 [28.0 mmol l–1Treatment 10 Accepted (P=1.00) 
  Control 10  
 10.0 [56.0 mmol l–1Treatment Accepted (P=1.00) 
  Control  
Mix of ectyoplasides A and B 5.3 [2.8 mmol l–1Treatment Rejected (P<0.01) 
  Control  
Test compoundConcentration (mg ml–1)*Test pelletPellets eatenPellets rejectedResult
Formoside 15.8 [15.0 mmol l–1Treatment 10 Rejected (P<0.01) 
  Control 10  
Sceptrin 1.0 [1.6 mmol l–1Treatment Accepted (P=0.24) 
  Control  
 5.0 [8.1 mmol l–1Treatment Rejected (P<0.01) 
  Control  
Oroidin 5.0 [28.0 mmol l–1Treatment 10 Accepted (P=1.00) 
  Control 10  
 10.0 [56.0 mmol l–1Treatment Accepted (P=1.00) 
  Control  
Mix of ectyoplasides A and B 5.3 [2.8 mmol l–1Treatment Rejected (P<0.01) 
  Control  
*

Naturally occurring concentrations of test compounds: formoside, 7.9 mg ml–1; sceptrin, 5.3 mg ml–1; ectyoplasides A and B, 5.3 mg ml–1; oroidin, 1.4 mg ml–1

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