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Fishery Bulletin 103(3) 



Parasite analysis 



Although not an objective of the study, parasites were 

 opportunistically sampled from the 2001 Gulf of Alaska 

 collections of rougheye rockfish to determine if depth or 

 species subtype might have been a factor in the geographi- 

 cal segregation noted by Moles et al. in 1998. This would 

 also allow us to determine if the parasite data supported 

 results of the current allozyme work. The rougheye rock- 



fish were examined for the proportion offish with the gill 

 parasites Neobrachiella robusta, Trochopus trituba, or the 

 visceral parasite Corynosoma sp. by using the procedures 

 of Moles et. al. (1998). A categorical analysis of variance 

 (SAS procedure, CATMOD: vers. 8.02. Cary, NC 1989) 

 was used to test whether parasite prevalence differed 

 among the two types of rougheye rockfish. 



