some 39 percent ofthe fillets examined, 

 confirming that this trematode presents 

 the major parasite problem in Sebas~ 



todes alutus. 



Most parasites occurred in the 

 meaty shoulder portion of the fillet or 

 in the tail portion. Only the lower 

 shoulder area was observed to be 

 consistently low in parasites. 



4. Over 50 percent of the skinned 

 fillets had blemishes, and of these 

 blemishes over 90 percent occurred 

 in the skin side of the fillet. 



5. No correlation was seen be- 

 tween the occurrence of blemishes and 

 the geographical area of catch. 



6. The meaty shoulder area of 

 the fillet was the least heavily affected 

 by blemishes, and the tail area the 

 most heavily affected, with nearly half 

 the blemishes occurring in the tail 

 area. 



7. The findings point to the de- 

 sirability of making a biological survey 

 into the factors related to the life 

 cycle of Prosorhynchus . 



MS #1071 



6P0 • 1 4509 



