NOTE Jagielo Movement of Ophiodon elongatus at Neah Bay. Washington 



o 



c 



CO 



O" 

 CD 



> 



0.4 



0.3 



0.2 



0.1 



0, 

 0.4 



0.3 



0.2 



0.1 



0, 

 0.4 



0.3 



0.2 



0.1 







Female n = 443, 'X = 60.68 

 Male n = 2525, X = 58.45 



20 



80 100 120 



All rel. n = 2993, X = 58.66 

 All rec. n = 391, X = 60.01 



40 60 80 100 120 



< 8.1 km n = 292, 7 = 59.59 

 >= 8 1 km n = 70, "X = 61 .93 



20 40 60 80 100 120 



Length (cm) 



Figure 2 



Length-frequency distributions of tagged lingcod. (A) Known male 

 and female lingcod tagged; (B) release length distribution of all 

 lingcod released and all lingcod recovered; (C) release length distribu- 

 tion of all lingcod recovered <8.1 km from release location and all 

 lingcod recovered >8.1 km from release location. 



males. The average size of tagged males (58.45 cm) was 

 less than the average size of females (60.68 cm). Based 

 on the length-at-maturity values of 46 cm for males 



and 76 cm for females (Mathews and LaRiviere 1987), 

 approximately 95% of the tagged males were mature, 

 and approximately 10% of the tagged females were 

 mature at the time of tagging. 



The average size of all tagged fish recaptured (60.01 

 cm) was greater than the average size of all tagged fish 

 released (58.66 cm) (Fig. 2b). The null hypothesis that 

 the length distribution of all recaptured lingcod is the 

 same as that of all tagged lingcod was rejected (x" = 

 14.91 with 7 df; P = 0.0371). 



The average size of fish considered migratory (61.93 

 cm) was greater than those considered nonmigratory 

 (59.59 cm) (Fig. 2c). The null hypothesis that migratory 

 fish had the same length distribution as nonmigratory 

 fish was rejected (x" = 51.42 with 5 df; P<0.00001). 



Of the 363 lingcod with known tagging and recap- 

 ture locations, 70 (19.3%) were recaptured >8.1 km (5 

 miles) from the tagging location and were considered 

 migratory, while the remaining 293 were recaptured 

 within 8.1 km of the tagging location and were con- 

 sidered nonmigratory (Table 3). Of those that migrated, 

 46 were recaptured from 8.1 to 50 km from the tag- 

 ging site, and 24 were recaptured >50 km from the tag- 

 ging site. 



Relative to the tagging location, most of the migra- 

 tory recaptures were westward and out of the Strait 

 of Juan de Fuca as opposed to eastward and inside the 

 Strait. Of the 70 lingcod judged to be migratory, 54 

 were recaptured west and north/south of the tagging 

 location, while only 16 were recaptured east and 

 north/south of the tagging location (Table 3). The null 

 hypothesis that male and female tagged lingcod were 

 as likely to be recaptured east and north/south as op- 

 posed to west and north/south) of the tagging location 

 was rejected (r = 20.62 with 1 df; P<0.00001). Recap- 

 tures came from as far north as Queen Charlotte Sound 

 (241 miles), as far south as Cape Falcon (149 miles), 

 and as far east in the Strait of Juan de Fuca as Cres- 

 cent Bay (36 miles). Most of the migratory fish (25) 

 were recovered on trawl grounds off the Washington 

 coast and included those in the vicinity of Cape Flat- 

 tery (5). the Cape Flattery Spit (9), Umitilla/La Push 

 (4), Destruction Island (4), and Cape Elizabeth (3). 



