DRUCKER: COHO SALMON OF KARLUK RIVER SYSTEM 



Table 3.— Average lengths of female coho salmon from river systems along the Pacific coast of North America 



and Asia, arranged geographically from north to south. • 



Area 



North America 

 Yukon River, Alaska 

 Swanson River, Alaska 

 Resurrection Boy, Alaska 

 Dairy Creek, Alaska 

 Brooks River, Alaska 

 Karluk River, Alaska 

 Sashin Creek, Alaska 

 Port Herbert, Alaska 

 Nomu River, Britisli Columbia 

 Fraser River, British Columbia 

 Seattle, Wash. 

 Minter Creek, Wash. 

 Columbia River, Wash. 

 Deer Creek, Oreg. 

 Flynn Creek, Oreg. 

 Needle Branch, Oreg. 

 Scott Creek, Calif. 

 WadcJell Creek, Calif. 



Asia 



East coast of Kamchatka, USSR: 

 Kamchatka River 

 Kyrganik River 

 Kalyger River 

 Avachin Gulf 

 Paratunka River 



West coast of Kamchatka, USSR: 

 Kikhchik River 

 Bolshaya River 

 Ozernaia River 



Average length 



Fork 



Total 



Standard 



Mideye- 

 fork 



Refer 



62.1 



62.1 



Gilbert (1922) 



Engel (I966)i 



Logon (1965) = 



Engel (1965)^ 



(') 



Present study 



Crone (1968) 



Crone (1968) 



Foerster and Pritchard (1936) 



Foerster and Pritchard (1936) 



Allen (1958) 



Salo (1955) 



Marr (1943) 



Koski (1966) 



Koski (1966) 



Koski (1966) 



Shapovalov and Toft (1954) 



Shapovalov and Taft (1954) 



Gribanov (1948) 



Gribanov (1948) 



Gribanov (1948) 



Gribanov (1948) 



Gribanov (1948) 



Gribanov (1948) 

 Gribanov (1948) 

 Gribanov (1948) 



' See footnote 1, Table 2. 



2 Logan, Sidney M. 1965. Silver salmon studies in the Resurrection Boy area. In Dingell-Johnson project report, 1964-65, Vol. 6: 129-145, Alaska 

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 (Unpublished.) 



■' Lowler, Robert E. 1964. Egg take investigations in Cook Inlet and Prince William Sound. In Dingell-Johnson project report, 1963-64, Vol. 5: 

 123-132, Alaska Dep. Fish Gome, Sport Fish Div., Juneau, Alaska. (Unpublished.) 



* Eicher, George J., Jr. The effects of laddering a falls in a salmon stream. National Marine Fisheries Service, Auke Bay Fisheries Laboratory, Auke 

 Bay, Alaska, 5 p. (Unpublished.) 



NUMBER OF EGGS IN RIGHT 

 AND LEFT OVARIES 



The numbers of eggs in the right and left 

 ovaries of the genus Oncorhynchtis are usually 

 quite variable. Rounsefell (1957) noted that 

 although the rate of maturation of eggs from 

 Karluk Lake sockeye salmon was the same in 

 both ovaries of the same fish, the number of eggs 

 in each ovary varied. Eguchi and his co-workers 

 (Rounsefell, 1957) found no significant diflFer- 

 ences in the numbers of eggs in the two ovaries 

 in chum salmon, 0. keta, in Japanese waters. 

 Helle (1970) found the same lack of a significant 

 difference in a sample of pink salmon, 0. gor- 

 buscha, from Olsen Bay, Alaska, in 1963. Sock- 



eye salmon from Brooks Lake, Alaska, in 1957 

 and 1958 and from Karluk Lake in 1958 had 

 more eggs in the left ovary than in the right 

 (Hartman and Conkle, 1960). At Bare Lake, 

 Alaska, sockeye salmon had more eggs in the 

 right ovary than in the left (Nelson, 1959). 



I compared the numbers of eggs from the right 

 and left ovaries of Karluk River coho salmon 

 (Table 4) by means of a ^ test for paired ob- 

 servations. The differences between the num- 

 bers of eggs in the right and left ovaries were 

 significant (t = 2.60; df = 31; P = 0.05). In 

 31 fecundity samples, 71% had more eggs in 

 the right ovary than the left. I could not find 

 comparable information on comparisons between 

 the numbers of eggs in the ovaries of coho 

 salmon from other areas. 



85 



