|Document Type:||Chapter or Section|
|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.)|
|Publisher:||Report of the National Marine Fisheries Service to the Bonneville Power Administration. Portland, Oregon|
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.