FISHERY BULLETIN; VOL. 69, NO. 



V->^' 





V 



Figure 5. — Dredge catch of starfish aboard the RV Oregmi taken during an exploratory fishing survey on 



the Cape Kennedy grounds. 



of underwater observation there is no way of 

 mapping beds definitively. A remote-controlled 

 underwater assessment vehicle (RUFAS) has 

 since been used to survey the Cape Kennedy 

 grounds and preliminary data analysis verifies 

 our findings (Cummins et al., see footnote 5). 

 Major abundance occurred at slightly differ- 

 ent depth ranges north and south of the Cape 

 (Figure 8). Seasonal changes, while not no- 

 ticeable in these areas, did occur at some depth 

 ranges. Abundance was highest in 21 to 23 fm 

 south of the Cape and 24 to 27 fm north of the 

 Cape. By August 1968. scallops were gone south 

 of the Cape. North of the Cape the population 



diminished through October 1968 and had prac- 

 tically disappeared by December. 



YIELD 



Yield is presented as pounds of meat per drag. 

 Preliminary calico scallop investigations had 

 used bushels per drag as a yield criterion, but 

 owing to differences in size, barnacle encrusta- 

 tion on the shell, and changes in meat condition, 

 the meat yield per bushel was highly variable. 



Variation in bushel yield due to size differ- 

 ences is obvious, but the effect of barnacle en- 

 crustation is more subtle. The sedentary nature 



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