Northwest Fisheries Science Center

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Document Type: Chapter or Section
Center: NWFSC
Document ID: 8888
Type of Book: Technical
Section or Chapter Title: Appendix D: Reproduction and early life history characteristics and definition of habitat requirements for spawning and rearing of white sturgeon populations in the Columbia River downstream from Bonneville Dam
Book Title: Status and habitat requirements of white sturgeon populations in the Columbia River downstream from McNary Dam
Author: George T. McCabe, Robert J. McConnell
Editor: Fred Holm (Ed.)
Publication Year: 1987
Publisher: Report of the National Marine Fisheries Service to the Bonneville Power Administration. Portland, Oregon
Pages: 49-60
Abstract:

From October 1986 to April 1987 the National Marine Fisheries Service (NMFS ) prepared for sampling white sturgeon Acipenser transmontanus eggs, larvae, young-of-the-year, and sub-adults in the Columbia River downstream from Bonneville Dam.  Four 3.1-m plumb-staff beam trawls were purchased, and two 4.9-m semiballoon shrimp trawls were modified by inserting 9.5-mm knotless mesh (stretched) in the wings and throat.  The beam trawl and modified shrimp trawl were tested and found to sample properly.  The primary research vessel, a 40-ft steel-hulled boat, was prepared for the 1987 field season.

NMFS and the Washington Department of Fisheries began a cooperative sampling effort for white sturgeon eggs and larvae in the Columbia River downstream from Bonneville Dam in March 1987.  No eggs or larvae were collected during the March sampling.  A review of the pertinent white sturgeon literature was completed.  In addition, NMFS began recoding and entering past NMFS white sturgeon data into computer files, following a data format tentatively agreed to by the four agencies involved in this study. 

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