FOOD 

 ITEMS 



PERCENT 



25 50 75 25 50 75 25 50 75 25 50 75 25 50 75 



I I I I I I I I I I I I I I 



PREMOLT 



VERY 

 SOFT-SHELLED 



MODERATELY 

 SOFT-SHELLED 



NEARLY 

 HARD-SHELLED 



HARD -SHELLED 



ANIMALS 

 Annelid 

 Nereis sp. 

 Other 

 Mollusk 

 Pelecypod 

 Mytilus edulis 

 Gemma g emma 

 Myj arenaria 

 Other 

 Gastropod 

 H ydrobia minuta 

 Other 

 Arthropod 

 Crab 



Small arthropod 

 Barnacle 

 Insect 

 Foraminifera 

 Fish 

 Other 

 PLANTS 

 Algae 



S part ina sp. 

 UNIDENTIFIED 



STOMACHS withfood 

 STOMACHSnearly empty 



[ 



[ 



FOO D ITEMS 



Annelid 



Nereis sp. 



Other 

 Mollusk 



Pelecypod 

 M ytilus edulis 

 Gemma g emma 

 M.y_a arenaria 

 Other 



Gastropod 

 H ydrobia minuta 

 Other 



TOTAL NO. of CRABS 43 



AVERAGE 



0.0 

 .0 



0.0 

 .0 

 .0 

 .3 

 .3 

 .0 

 .2 

 .1 

 .0 



.1 

 .1 



.0 



15 



0.0 



.0 



.0 



10.0 



7.0 



1 .5 



3.4 



.6 



1.4 



3.0 



2.9 



.0 



37 



NUMBER 



0.07 



.07 



.0 



28.9 



2 2.6 



14.8 



1.4 



3.2 



3.2 



6.3 



6.0 



.1 



217 



0.02 



.01 

 <.01 

 10.8 

 7.9 

 4.6 



.9 



.9 

 1.6 

 3.0 

 2.6 



.2 



1,044 



200 



Figure 10. — The average numbers of certain animal.s per .stomach and the percentage frequency of 

 occurrence of food items in green crabs before and after molting. 



U.S. FISH AND WILDLIFE SERVICE 



