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Pink salmon in their native range have a strict two year life cycle, thus odd and even-year populations do not interbreed. In the state of Washington, pink salmon runs occur on odd years. [12] Adult pink salmon enter spawning streams from the ocean, usually returning to the stream where they originated.
[83] [84] Adult salmon may survive otherwise critical numbers of sea lice, but small, thin-skinned juvenile salmon migrating to sea are highly vulnerable. On the Pacific coast of Canada, the louse-induced mortality of pink salmon in some regions is commonly over 80%. [85]
[9] [10] Adult salmon may survive otherwise critical numbers of sea lice, but small, thin-skinned juvenile salmon migrating to sea are highly vulnerable. On the Pacific coast of Canada, the louse-induced mortality of pink salmon in some regions is commonly over 80%. [11]
Adult salmon run the gauntlet in reverse when they come back to spawn on the Tuolumne. This happens mainly from October to December upstream of the Hughson area.
[75] [76] Adult salmon may survive otherwise critical numbers of sea lice, but small, thin-skinned juvenile salmon migrating to sea are highly vulnerable. In 2007, mathematical studies of data available from the Pacific coast of Canada indicated the louse-induced mortality of pink salmon in some regions was over 80%. [42]
These five are chum, sockeye, Chinook, Coho, and pink - with pink being the smallest and most abundant species and Chinook being the largest and least abundant, per the Pacific Salmon Foundation ...