DRUCKER: COHO SALMON OF KARLUK RIVER SYSTEM 



Table 1. — Age class composition of stocks of coho salmon from North America and Asia, arranged geographically 



from north to south. 



Area 



Percent coho salmon in age class— 



2i 



2a 



33 



33 



4i 



4a 



43 



53 



65 



Reference 



North America 

 Nome River, Alaska 

 Unalakleet River, Alaska 

 Yukon River, Alaska 

 Yukon River, Alaska 

 Cook Inlet River, Alaska 

 Resurrection Boy, Alaska 

 Bear Creek, Alaska 

 Dairy Creek, Alaska 

 Mendenhall River, Alaska 

 Hood Bay Creek, Alaska 

 Karluk River, Alaska 

 Sashin Creek, Alaska 

 Port Herbert, Alaska 

 Stikine River, Alaska 

 Chignik River, Alaska 

 Ketchikan River, Alaska 

 Quatsino Bay, British Columbia 

 Fraser River, British Columbia 

 Georgia Strait, British Columbia 

 West coast, Vancouver Island, 

 British Columbia 



Langara Island, Georgia Strait, 

 British Columbia 



Columbia River, Wash. 



Waddell Creek, Calif. 



Asia 



East coast of Kamchatka, USSR: 

 Kamchatka River 

 Lake Ushki 

 Kyrganik River 

 Paratunko River 

 Avachin Gulf, Solevarko Bay 

 Kalyger River 



West coast of Kamchatka, USSR: 

 Kikhchik River 

 Bolshaya River 



Ozernaia River 

 Kukhtui River (Okhotsk) 



2.6 

 1.5 

 1.3 



0.1 



2.0 



0.6 



O.I 



6.1 

 18.4 



1.2 

 Tr. 

 Tr. 

 Tr. 

 Tr. 

 Tr. 



Tr. 



29.4 

 37.9 

 55.6 

 38.7 

 40.0 

 30.3 

 27.1 

 383.3 

 12.0 

 46.5 



8.0 



0.7 

 0.4 

 0.6 



18.0 

 20.0 

 45.2 

 23.2 

 70.8 

 95.0 

 96.5 

 97.1 

 97.5 



0.2 97.9 



83.9 

 81.6 



55.7 



4.3 



93.6 



57.4 

 80.2 

 27.5 



Tr. 

 0.3 



Tr. 



Tr. 



100.0 

 69.3 



100.0 

 32.8 



Tr. 



Tr. 

 Tr. 

 Tr. 

 Tr. 



Tr. 

 Tr. 



Tr. 



1.0 



70.6 

 62.1 

 44.4 

 58.1 

 60.0 

 68.8 

 71.1 

 16.7 

 80.0 

 47.5 

 56.9 

 77.0 

 76.0 

 51.9 

 72.4 

 29.2 



0.1 



3.0 

 0.2 

 0.4 

 0.4 



0.7 



0.2 

 0.9 

 9.7 



43.1 

 92.9 

 6.4 

 42.6 

 19.8 

 72.5 



30.1 



67.2 



3.2 



0.9 

 1.8 



1.9 



6.0 



41.7 



5.0 



4.0 



4.4 



1.4 



2.8 



Godfrey (1965) 

 Godfrey (1965) 

 Godfrey (1965) 

 Gilbert (1922) 

 Godfrey (1965) 

 Logan (1963,i 1964=) 

 Logan (1964) = 

 Logan (1964) = 

 (') 



Armstrong (1970) 

 Present study 

 Crone (1968) 

 Crone (1968) 

 Godfrey (1965) 

 Israel (1933) 

 Godfrey (1965) 

 Godfrey (1965) 

 Godfrey (1965) 

 Godfrey (1965) 

 Godfrey (1965) 



Pritchard (1940) 



Marr (1943) 



Shapovalov and Toft (1954) 



Godfrey (1965); Gribanov (1948) 



Gribanov (1948) 



Gribanov (1948) 



Gribanov (1948) 



Gribanov (1948) 



Gribanov (1948) 



Gribanov (1948) 



Godfrey (1965); Gribanov 



(1948); Semko (1954) 

 Gribanov (1948) 

 Godfrey (1965) 



In Dingell-Johnson project report, 1962-63, Vol. 4: 

 In Dingell-Johnson project report, 1963-64, Vol. 5: 



175-194, Alaska 

 133-151, Alaska 



1 Logan, Sidney M. 1963. Silver salmon studies in the Resurrection Bay area 

 Dep. Fish Gome, Sport Fish Div., Juneau, Alaska. (Unpublished.) 



= Logan, Sidney M. 1964, Silver salmon studies in the Resurrection Boy area 

 Dep. Fish Game, Sport Fish Div., Juneau, Alaska. (Unpublished.) 



3 The high percentage of age 3^ fish is atypical and not representative of Resurrection Bay streams. Dairy Creek juveniles ore reared in a brackish 

 water lagoon rather than in the stream itself, resulting in 1-year smolts. (Personal communication, Sidney Logan, Area Management Biologist, Alaska 

 Department of Fish and Game, Soldotna, Alaska, March 15, 1971.) 



* Collected by author in 1966. 



Fifty-seven percent of the Karluk fish had mi- 

 grated in their third year and 42 9f in their 

 fourth year; only l^c had migrated in their 

 fifth year (Table 1). Although the freshwater 

 residence of fish in the Karluk escapement var- 

 ied from 2 to 4 years, Karluk coho salmon, like 

 those in all other systems, returned to spawn 

 after being at sea for 12 to 18 months. 



The presence of large numbers of fish( 42%) 

 that had spent 3 years in freshwater residence 

 (age class 64) is unique to the Karluk system. 



Fish of age class 64 have been found in other 

 Alaska river systems, i.e., the Yukon River (Gil- 

 bert, 1922), Resurrection Bay and Bear Creek 

 (see footnotes 1 and 2, Table 1) , Hood Bay Creek 

 (Armstrong, 1970), Sashin Creek and Port 

 Herbert (Crone, 1968), and Chignik River 

 (Israel, 1933) ; but the proportion of 64 fish in 

 the total runs to these systems is small — usually 

 less than 5% (Table 1). 



The age composition of stocks of coho salmon 

 from systems on the Kamchatka Peninsula, 



81 



