Evaluation of Fish Movements, Migration Patterns and Population Abundance with Streamwidth PIT Tag Interrogation Systems.

[摘要] Two remote Streamwidth PIT tag Interrogation systems (SPIs) were established in Abernathy Creek to test the feasibility of these systems for generating movement, migration, survival and smolt production estimates for salmonids. SPIs were installed and operating before any PIT tagged fish were released in the creek. Systems were designed to report all detected PIT tag codes with a time stamp to a regional database. When used in combination, the overall creek detection efficiency was 97% with 95% confidence intervals of 91-100%. SPI efficiency of 23 mm PIT tag detection ranged from 55-100%. Efficiencies were site dependent, where one SPI averaged 73% and another averaged 89%. SPI efficiency of PIT tag detection was not completely dependent on electronics noise levels or environmental conditions. A backpack PIT tag detector was also developed and tested for efficiency of PIT tag detection.

[发布机构] Technical Information Center Oak Ridge Tennessee

[学科分类] 工程和技术（综合）

[关键词] Fishes;Migration;Fish populations;Abundance;Habitats