Table 1.— Number of adults,- potential egg deposition, and fresh-water and marine survival for 

 odd- and even-year lines of pink salmon, Sashin Creek, 1934-66. (Estimates of survival from 

 escapements of less than 1,000 are not given because of the errors inherent in sampling small 

 populations . ) 



Even-year line 



Year 



of 

 escape- 

 ment 



Adults 



in 

 escape- 

 ment 



Potential 



egg 



deposition 



Fresh- 

 water 

 survival 



Marine 

 survival 1 



Odd -year line 



Year 

 of 

 escape- 

 ment 



Adults 



in 

 escape- 

 ment 



Potential 



egg 



deposition 



Fresh- 

 water 



survival 



Marine 

 survival 



l 



1 Marine survival is from fry to adults in the escapement. Fishing mortality is unknown. 



2 An attempt was made to destroy the spawners or their progeny. 



3 Most of these fish were transplanted to Sashin Creek from Bear Harbor. 



* Fry weir not operated. Estimate based on preemerged alevins in spawning beds. 

 5 Personal communication, 1969. W. R. Heard, Fishery Biologist, Bureau of Commercial Fisheries 

 Biological Laboratory, Auke Bay, Alaska 99821. 



of Commercial Fisheries and the Alaska 

 Department of Fish and Game in cooperation 

 with the fishing industry transplanted 2,395 

 adult pink salmon from Bear Harbor, Kuiu 

 Island, Alaska, to Sashin Creek and its estuary 

 (McNeil, Smedley, and Ellis, 1969). The fish 

 were captured on August 24 and were placed 

 above the weir in Sashin Creek between 

 August 25 and 28; they began spawning within 

 2 days. 



I studied the first filial generation of this 

 stock of pink salmon and their progeny in the 

 summer and fall of 1966 and the spring of 

 1967. The study was designed to continue the 

 long series of data on the abundance of adults 

 and production of fry and to compare the 

 behavioral and biological characteristics of 

 the introduced and native stocks. In this 

 paper I report on the number, sex ratio, 

 length, fecundity, distribution on the spawning 

 grounds, and success of spawning of adults 

 and on survival of their progeny to the fry 

 stage. I compare the fresh-water life history 

 of the transplanted even-year line with recent 



similar observations of the odd-year line. In- 

 formation on streamflow and the oxygen content 

 of intragravel water is also given. 



There were 2,193 pink salmon spawners in 

 Sashin Creek in 1964-- 1,139 female and 767 

 male transplanted fish and 166 female and 

 121 male fish of unknown origin. 1 The progeny 

 of the 1964 spawning had a fresh- water sur- 

 vival to the fry stage of about 14 percent; 

 about 2 percent of the fry returned as adults 

 in 1966. 



Recent History of the Odd- Year Line of 

 Pink Salmon in Sashin Creek 



The fish that returned to Sashin Creek in 

 1939 (progeny of the fish that spawned in 

 1937) were almost twice as numerous as 



1 Although it is theoretically possible that the 287 fish 

 of unknown origin were progeny of the eight pink salmon 

 that spawned in 1962 (table 1), such a high survival has 

 never occurred at Sashin Creek, and it is more likely that 

 these fish were strays from other streams. 



