Pacific lampreys (Lampetra tridentata) have declined in abundance in the Columbia River Basin. Although, the reasons for the decline are unclear, we suggest that development of hydroelectric dams and habitat alterations in tributaries as the main causes. The available knowledge of life history of Pacific lampreys and status from dam...
The cultural and ecological values of Pacific lamprey (Lampetra tridentata) have not been understood by Euro-Americans and thus their great decline has almost gone unnoticed except by Native Americans, who elevated the issue and initiated research to restore its populations, at least in the Columbia Basin. They regard Pacific lamprey...
This document is the 1998 annual progress report for studies of Pacific lampreys
(Lampetra tridentata) conducted by the Confederated Tribes of the Umatilla Indian
Reservation (CTUIR), Columbia River Inter-Tribal Fish Commission, and University of
Minnesota (U of M). Bonneville Power Administration (BPA) funded activities through
Project 94-026.
The Pacific Lamprey...
Based on oral interviews with tribal informants, current and former state and federal fisheries personnel, review of records and literature, and presence/absence sampling, it is apparent that Pacific lamprey were once abundant in ceded area streams of the Umatilla Indian Reservation (John Day, Umatilla, Walla Walla, Tucannon, and Grande Ronde...