2010
DOI: 10.1577/t08-225.1
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Marine Distributions of Chinook Salmon from the West Coast of North America Determined by Coded Wire Tag Recoveries

Abstract: The coded wire tag (CWT) database contains detailed information on millions of Pacific salmon Oncorhynchus spp. released from hatcheries or smolt traps and recovered in the north Pacific Ocean and its tributaries. I used this data set to examine the spatial and temporal variation in the marine distributions of 77 hatchery and 16 wild populations of Chinook salmon O. tshawytscha based on recoveries of an estimated 632,000 tagged salmon in coastal waters from southern California to the Bering Sea during 1979–199… Show more

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Cited by 119 publications
(149 citation statements)
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References 33 publications
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“…In addition, variability in the survivals of these two species has become more coherent since the 1980s, effectively reducing the marine component of salmon biodiversity. Because this shift was demonstrated with tagging data from hatchery fish, we note that hatchery and wild salmon occupy similar ocean habitats and have similar survival patterns (24)(25)(26), but the response of wild fish may differ. The covariability between the NPGO and the principal modes of spatial variability in coho and Chinook salmon survival rates is a previously unidentified link between low-frequency Pacific climate variability and salmon.…”
Section: Discussionmentioning
confidence: 85%
See 1 more Smart Citation
“…In addition, variability in the survivals of these two species has become more coherent since the 1980s, effectively reducing the marine component of salmon biodiversity. Because this shift was demonstrated with tagging data from hatchery fish, we note that hatchery and wild salmon occupy similar ocean habitats and have similar survival patterns (24)(25)(26), but the response of wild fish may differ. The covariability between the NPGO and the principal modes of spatial variability in coho and Chinook salmon survival rates is a previously unidentified link between low-frequency Pacific climate variability and salmon.…”
Section: Discussionmentioning
confidence: 85%
“…Coho and Chinook salmon differ in many aspects of their life history, and these differences were previously invoked to explain the distinct patterns of spatial and temporal variability in populations of these species (32). These differences include duration of freshwater residence (33,34), offshore distributions in the early ocean phase (35)(36)(37), and ocean migration paths (24,25,38,39). The difference in the distribution of spawning ages is the most obvious difference between these species: Coho salmon tend to spawn at a single age, whereas spawning in specific populations of Chinook salmon is distributed over several ages (23,40) (Fig.…”
Section: Discussionmentioning
confidence: 99%
“…Our study adds to an increasing body of literature demonstrating that stock-specific variation in marine life history traits rivals that of freshwater traits. This variation begins with stock-specific size and timing at ocean entry (Roegner et al 2012; our study), continues as stock-specific migration rates, routes, and behaviors during the first summer or two of ocean residence (e.g., Trudel et al 2009;Tucker et al 2011;Burke et al 2013;Fisher et al 2014;Teel et al 2015), includes a poorly-understood winter period when salmon may occupy mid-ocean habitats and are logistically difficult to sample EARLY OCEAN GROWTH OF CHINOOK SALMON AND STEELHEAD (Groot and Margolis 1991;Myers et al 1996;Larson et al 2013), and concludes with stock-specific differences in marine distributions as adult salmon return to their natal streams (Milne 1957;Wright 1968;Weitkamp 2010;Sharma and Quinn 2012)-differences which have long been exploited by managers to structure fisheries (e.g., Killick 1955).…”
Section: Variation In Life History Traitsmentioning
confidence: 99%
“…Similarly, when northwest winds drove offshore surface currents, fish responded by altering their swim angle towards shore. These dynamic behavioral responses would be required to maintain the surprisingly consistent spatial distributions observed for these stocks over the years (Peterson et al 2010, Weitkamp 2010. Therefore, we inferred that for yearling Chinook salmon, migration behavior, as well as rates of consumption and growth at the individual level, are influenced by interannual variation in ocean currents.…”
Section: Swim Speedmentioning
confidence: 96%
“…For a limited number of species, mark-recapture methods such as coded-wire tagging have provided some basic information (Weitkamp 2010, Fisher et al 2014. However, for most species, data from marking studies are not forthcoming.…”
Section: Introductionmentioning
confidence: 99%