Hayse: Feeding, age. growth, and reproduction of Chaetodipterus faber 



73 



> 



^ 



> 



Z 



> 



z 



60 



40 



20 



20 



40-" 



50 

 40 



20 



20- 



40v 



80 



90 



B 1-100 mm SL 



(n=80) 



78% 



TAXQN 



IHL 



_ML 



9% 



4% 



F 



■o— 



'15% 



%F 



39% 



31% 



B 



78% 



101-200 mm SL 



(n=40) 



S D 



18% 



45% 



F 



10% 



■%F 



A 

 B 

 C 

 D 



F 



IRI 

 2404 

 2330 



230 



4484 



45 



Ml 



2234 



1890 



222 



455 



42 



u 



48% 



> 200 mm SL 



(n=35) 



D 



F 



-B 1=1. 



H 



JHL 



ML 



1 V 



26% 



3% 



■%F 



2602 

 1239 



A 

 C 

 D 5384 



F 

 G 

 H 



30 



556 



42 



2246 



1193 



113 



23 



535 



42 



80^ 

 90^ 



60% 



Figure 5 



Percent frequency (%F), percent number 

 (%A'). percent volume (%V), index of rela- 

 tive importance (IRI), and modified index 

 of importance (MI) for higher taxonomic 

 groups of food in the diet of Chaetodipterus 

 faber collected in South Carolina waters, 

 by standard length (SL) intervals. 



and copepods. In stratum 2, the relative-importance in- 

 dices indicated anthozoans were tlie major component 

 of the diet, followed by hydroids. Anthozoans in 

 stomachs of fish from stratum 2 consisted mainly of 

 Renilla 7'eniforwis. Jellyfish (Scyphozoa) were never 

 seen in stomachs of fish from stratum 1 or stratum 2. 

 The IRI indicated that amphipods were the most impor- 



tant prey in stratum 3, while the MI ranked hydroids 

 as the dominant food item. Amphipods composed 91% 

 of the individuals and were found in 63% of the stom- 

 achs containing food, but accounted for only 5% of total 

 volume of food in stomachs from stratum 3. Hydroids, 

 on the other hand, were observed in 88% of the 

 stomachs from stratum 3 which contained food and 



