100 



80 



60 



or 40 



hj 



m 



| 20 



o^ 

 20 - 

 40 



w 60 H 



B 

 -&> 



-£rH 



bcef 



O 80 - „ (.100%. 



> % FREQUENCY 11 " ) 



3 s 100- 



£■ 





~m 



— 



B 





£&~1 



TOTAL LENGTH 101-150 

 (N) (96) 



IRI 



151-200 

 (57) 



201-250 

 (16) 



251-300 301-350 351-400 

 (14) (5) (7) 



A) 



12894 



14706 



12496 



B) 



1675 



1759 



1291 



C) 



62 



173 



929 



D) 



8 











E) 



11 



10 



13 



F) 



5 







11 



915 



1186 



13177 



1001 6 



14151 



3730 



83 







6 



55 



577 







5 







44 











833 



401-450 

 (4) 



5027 



12439 



225 



102 











&L 



45I-600 

 (4) 





1359 



AMPHIPODA 



4 496 



DECAPODA 



3536 



POLYCHAETA 







PELECYPODA 



245 



CUMACEA 



55 



ECHINOIDEA 



Figure 18.— Percent frequency occurrence, percent number, percent volume 

 displacement, and index of relative importance (IRI) of higher taxonomic 

 groups of food for size intervals (mm) of Macrozoarces americanus. 



Figure 19.— Relationship between size of Macrozoarces americanus and vol- 

 ume of food consumed (broken line), mean prey volume (solid line), and prey 

 number per stomach (dashed line). 



o 

 o 



X 



O 



5 

 3 



3- 



0.4 



S 5 



0.3 



0.2- 



0.0- 

 Totol length 

 (N) 



101 - 150 

 (96) 



151-200 

 (57) 



201-250 I 251-300 I 301-350 I 351 -400 1401-450 451-600 

 (16) (14) (5) (7) (4) (4) 



70 



-60 



50 



40 



30 



20 



22 



