Operation of the Lower Granite Dam Adult Trap, 2008.

Harmon, Jerrel R.

United States. Bonneville Power Administration.

关键词: Granites;    Adults;    Genetics;    Salmon;    Rivers;   

DOI  :  10.2172/961804
RP-ID  :  P109952
RP-ID  :  35039
RP-ID  :  961804

美国|英语

来源: UNT Digital Library

【 摘 要 】

During 2008 we operated the adult salmonid trap at Lower Granite Dam from 7 March through 25 November, except during a short summer period when water temperatures were too high to safely handle fish. We collected and handled a total of 20,463 steelhead Oncorhynchus mykiss and radio-tagged 34 of the hatchery steelhead. We took scale samples from 3,724 spring/summer Chinook salmon O. tshawytscha for age and genetic analysis. We collected and handled a total of 8,254 fall Chinook salmon. Of those fish, 2,520 adults and 942 jacks were transported to Lyons Ferry Hatchery on the Snake River in Washington. In addition, 961 adults and 107 jacks were transported to the Nez Perce Tribal Hatchery on the Clearwater River in Idaho. The remaining 3,724 fall Chinook salmon were passed upstream. Scales samples were taken from 780 fall Chinook salmon tagged with passive integrated transponder (PIT) tags and collected by the sort-by-code system.