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Five Species of Salmon, Oncorynchus, in the Sacramento River, California
Hallock J. Richard, California Department of Fish and Game
Donald H. Fry Jr, California Department of Fish and Game
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January 1, 1967
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ABSTRACT:
King salmon (O. tshawytscha) are abundant in the Sacramento-San Joaquin river system of California, but other species of salmon are uncommon or rare. To determine the occurrence and abundance of the salmon studies and hatchery operations were examined and recorded. From 1949 through 1958, a total of 130 chum, pink, sockeye, and silver salmon (<i>O. keta, O. gorbuscha, O. nerka, and O. kisutch</i>) was identified. All were from the Sacramento, its tributaries, or the Sacramento-San Joaquin Delta. No salmon other than kings were found in the southern tributaries of the Delta. These 130 fish do not include planted silver salmon, which began entering the rivers in 1956. After this planting was discontinued, silver salmon rapidly declined and have almost vanished from the Sacramento. Highly tentative estimates were made of the River system. It was concluded that these three species are present as very small spawning runs, but that silver salmon were so scarce that they should be regarded as strays.
SUGGESTED ONLINE CITATION:
Hallock J. Richard and Donald H. Fry Jr.
2006.
"Five Species of Salmon, Oncorynchus, in the Sacramento River, California" in Special Collection of Salmonid Documents.
http://www.estuaryarchive.org/archive/SalmonidCollection
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