86 



BULLETIN OF THE BUREAU OF FISHERIES 



RETURNS FROM EXPERIMENTS AT POINT COLPOYS, SUMNER STRAIT 



Tagging was done at Point Colpoys on only one day — July 10 — when 705 red 

 salmon, 61 cohos, 259 pinks, and 11 chums were tagged. Only eight of the tagged 

 cohos were recaptured; one of these was taken at Point Colpoys six days after being 

 tagged, and the others were captured south of Point Colpoys, between Screen Islands 

 and Foggy Bay, in the waters of Clarence Strait, Ernest Sound, Behm Canal; and 

 Revillagigedo Channel. Only one of the chums was recaptured ; this was taken eight 

 days after being tagged at Marsh Island, near the northern end of Clarence Strait. 



RED SALMON 



One hundred and thirty-four red salmon tagged were retaken. The data are 

 given in Table 10 and are shown graphically in Figure 8. 



Table 10. — Red salmon tagged at Point Colpoys, July 10, 1926 — 705 tagged, 134 returned (19 per 



cent) 



Locality of recapture 



Stephens Passage: Hobart Bay 



Frederick Sound: 



Deepwater Point 



Carroll Island 



Wrangell district: 



Dry Strait 



Stikine Flats 1 



Concks Creek 



Chichagof Pass 



Sumner Strait: 



Red Bay 



Point Colpoys 



Point McNamara 



Snow Passage 



Point Nesbitt 



Clarence Strait: 



Marsh Island 



Screen Islands 



Lincoln Rock 



Eagle Creek 



C oilman Island 



Point Stanhope 



McHenry Inlet 



Kelp Point 



Meyers Island 



Meyers Chuck 



Point Niblack 



Streets Island 



Narrow Point 



Lyman Anchorage 



Kasaan Point 



Orendall Island 



Num- 

 ber 



Time, in 

 days 



10-12 

 31 



14 

 16 

 12-19 

 3-14 



11 



6-19 

 4-6 



4-9 

 6 

 4-6 

 6-11 

 8 

 12 

 4-11 

 4 

 13 

 18 

 0-10 

 8-42 

 22 

 21 

 6-10 



Locality of recapture 



Clarence Strait— Continued. 



Clover Bay 



Skin Island 



Halibut Creek !__. 



Island Point (Prince of Wales Island) . 



Point Adams 



Point Caamafio 



North end Oravina Island 



West shore Gravina Island 



Nelson Cove -1 



Dall Head 



Crab Bay 



Duke Island 



Ernest Sound: 



Union Point 



Emerald Bay 



Point Eaton 



Brownson Island 



Frosty Bay 



Anan 



Behm Canal: 



Betton Island 



Fortman hatchery 



Revillagigedo Channel: 



Mountain Point 



Carroll Point 



Point Alava 



Kah Shakes 



Foggy Bay 



British Columbia: Observatory Inlet 



Doubtful 



Num- 

 ber 



Time, in 

 days 



8- 11 

 IS 



9 

 7 



12 

 6-7 



21 



37 

 9 

 6 

 5 



24 



2 

 16 



4- 15 



4 

 16 

 12 



6 

 85 



11 



9- 39 

 18 

 14 



5- 16 

 10-13 



6- 13 



i One reported taken before date of tagging. 



A slight migration northward into the Stikine district and Stephens Passage is 

 indicated, but the main line of distribution is southward through Clarence Strait, 

 Ernest Sound, Behm Canal, and Eevillagigedo Channel. Only two were recorded 

 as taken in British Columbia. In 1924 and 1925 a number of experiments were 

 conducted at Ruins Point; also in Sumner Strait, though west and south of Point 

 Colpoys about 40 miles. In 1924 the tagging at Ruins Point was scattered over a 

 number of days between July 12 and August 17, and in 1925 it was done between 

 July 18 and 25. There is very little difference in the distribution of the red salmon 

 tagged at Ruins Point in 1924 and 1925 and at Point Colpoys in 1926, except such as 

 would naturally^f ollow as a result of the migration in through Sumner Strait. A few 



