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Table 1 Frequency of occurrence (FO %), percent volume (V %), and alimentary importance index (IA i ) of the items identified in the stomach contents of Conodon nobilis (n = 160) sampled in Caraguatatuba Bight from October 2003 through October 2004

From: The barred grunt Conodon nobilis (Perciformes: Haemulidae) in shallow areas of a tropical bight: spatial and temporal distribution, body growth and diet

Dietary items FO (%) V (%) IA i
Phylum Cnidaria    
 Hydrozoa n.i. 1.91 0.02 0.00048
Phylum Sipuncula    
 Sipuncula n.i. 1.91 0.03 0.00097
Phylum Echiura    
 Echiura n.i. 0.64 0.01 0.00006
Phylum Mollusca    
 Class Bivalvia    
  Bivalve siphons 1.91 0.08 0.00213
Phylum Annelida    
 Polychaeta n.i. 1.91 0.05 0.00145
 Polychaete tubes 1.27 0.03 0.00058
Phylum Arthropoda    
 Crustacean fragments 13.38 1.12 0.22030
  Class Branchiura    
   Branchiura n.i. 0.64 0.00 0.00003
  Class Malacostraca    
   Crab n.i. 1.27 0.40 0.00749
   Mysida n.i. 83.44 63.50 78.07830
   Amphipoda n.i. 16.56 0.41 0.10071
   Amphipod tubes 20.38 1.30 0.39147
   Isopoda n.i. 0.64 0.04 0.00039
Phylum Bryozoa    
 Bryozoa n.i. 1.91 0.01 0.00039
Phylum Chordata    
 Class Pisces    
  Fish fragments 4.46 10.63 0.69840
  Fish scales 62.42 14.15 13.02001
Others    
 Organic matter n.i. 61.78 8.21 7.47680
Total   100 100