NOTE Stanley et al.: Movements of tagged Sebastes flavidus 



657 



100 



Figure 1 



Sites of major yellowtail rockfish, Sebastes flavidus, fishing grounds 

 (hatched areas); stock designations are based on individual or combi- 

 nations of International North Pacific Fishery Commission (INPFC) 

 statistical areas (ie. N. Columbia) and Pacific States Marine Fishery 

 Commission (PSMFC) statistical boundaries within the INPFC ar- 

 eas (ie. 3C-US). 



two samples of 100 fish sacrificed during the 1980 

 tagging off the southwest coast of Vancouver Island. 

 In the Alaskan program of 1981 and 1982, fish were 

 caught by hook and line from depths of 40-100 m 

 with commercial jigging machines. Fish were exam- 

 ined for decompression stress and hooking damage. 

 Only those fish with no visible stress symptoms were 

 tagged. Atotal of 397 yellowtail rockfish were tagged 

 as in the Canadian study, but none was injected with 

 OTC or decompressed. All fish were captured and 

 released in July 1982 at two sites in Sitka Sound, 

 Alaska (Fig. 2). 



All tag recoveries from both programs were ob- 

 tained from commercial fisheries. Data on gender and 

 recovery location were obtained when possible, al- 

 though the latter information was usually limited to 

 statistical area. We calculated the minimum possible 

 distance travelled by assuming the fish travelled a 

 direct course approximating the edge of the conti- 

 nental shelf. Distance was calculated to the border 

 of the statistical area closest to the point of release 

 and rounded down to the nearest 25-km interval. 

 Transit time was calculated as the overall distance 

 divided by the number of days at large. The recovery 



