Smolt-to-AduIt Survival Patterns of Sockeye Salmon (Oncorhynchus nerka): Effects of Smolt Length and Geographic Latitude when Entering the Sea

Variations in smolt-to-adult survival (SAS) of sockeye salmon (Oncorhynchus nerka) relative to smolt length and age and latitude of the nursery lake outlet were explored for six stocks in Canada, Russia, and Alaska (W. E. Ricker. 1962. J. Fish. Res. Board Can. 19: 531–560) and 12 Alaskan populations. SAS values ranged from 90–100 mm (6–8 g) did not. Variation in SAS was explained by smolt size (30%) and a south to north dine of nursery lakes (21%) indexed by latitude. SAS of about 3 and 13% for threshold-sized age 1. smolts (60–65 mm) from southern and northern nursery lakes were consistent with sockeye biostandards for Canada (4.7%) and Alaska (12%), respectively. The combined effect...

[1]  A. Cass,et al.  Effect of smolt size on smolt-to-adult survival for Chilko Lake Sockeye Salmon (Oncorhynchus nerka) , 1991 .

[2]  J. Koenings,et al.  Density-Dependent, Trophic Level Responses to an Introduced Run of Sockeye Salmon (Oncorhynchus nerka) at Frazer Lake, Kodiak Island, Alaska , 1988 .

[3]  Harold J. Geiger,et al.  Escapement goals for sockeye salmon with informative prior probabilities based on habitat considerations , 1991 .

[4]  R. E. Thorne,et al.  A Note on Variability of Marine Survival of Sockeye Salmon (Oncorhynchus nerka) and Effects of Flooding on Spawning Success , 1987 .

[5]  Norman R. Draper,et al.  Applied regression analysis (2. ed.) , 1981, Wiley series in probability and mathematical statistics.

[6]  K. Hyatt,et al.  Responses of Sockeye Salmon (Oncorhynchus nerka) to Fertilization of British Columbia Coastal Lakes , 1985 .

[7]  J. Schnute,et al.  Influence of Time and Size at Release of Juvenile Coho Salmon (Oncorhynchus kisutch) on Returns at Maturity , 1982 .

[8]  R. E. Foerster.  On the Relation of Adult Sockeye Salmon (Oncorhynchus nerka) Returns to Known Smolt Seaward Migrations , 1954 .

[9]  R. Parker.  Estimations of Ocean Mortality Rates for Pacific Salmon (Oncorhynchus) , 1962 .

[10]  Randall M. Peterman,et al.  Form of Random Variation in Salmon Smolt-to-Adult Relations and Its Influence on Production Estimates , 1981 .

[11]  B. Drucker,et al.  Migratory Behavior of Sockeye Salmon Fry and Smolts , 1967 .

[12]  W. Ricker.  Comparison of Ocean Growth and Mortality of Sockeye Salmon During Their Last Two Years , 1962 .

[13]  L. Mysak.  El Niño, Interannual Variability and Fisheries in the Northeast Pacific Ocean , 1986 .