Summary of Findings from Coded Wire Tag Analysis from Spring Chinook Salmon Spawning Surveys in the Clearwater Basin, Technical Report 2001.

[摘要] We recently received data on the decoded coded wire tags (CWT's) recovered from spring chinook snouts we collected during spawning surveys in the Clearwater Basin last fall (2001). We were curious about what could be learned from the tags recovered (even though our project is over), so we did some cursory analyses and have described our findings in the attached memo. Snouts were processed and codes determined by Idaho Department of Fish and Game. Most snouts did not contain CWTs, because most ad-clipped fish were not given a CWT. Further, because adults were outplanted live, we do not know what codes they contained. Each of the hatcheries from which outplanted adults were obtained had several CWT code groups returning. That means that the best we can do with the codes recovered is compare the hatchery of origin for the tag with the hatchery from which outplants were taken. The results are interesting and not exactly as we would have predicted.

[发布日期] 2002-05-31 [发布机构] United States. Bonneville Power Administration.

[关键词] Origin;Adults;Watersheds Fish Tagging - Idaho - Clearwater River Watershed;Salmon;54 Environmental Sciences