Figure 2. PIT tagged fish release and recovery These PIT tag related sites give a sense of the widespread distribution of all tagging activities in the Columbia River basin (Source: PTAGIS). Table 1. Summary of the utility and characteristics of the most commonly used fish tags. PIT CWT Genetics Acoustic/Radio Special Use (Otolith and geochem) Tag Use Hydrosystem Stock survival, Population Hydrosystem Life history passage and productivity status, some route specific studies, survival, and harvest, some passage hatchery population status, distribution. habitat, studies, some studies, habitat studies, Fisheries relative habitat studies, migration predation studies composition reproductive some timing, growth and some hatchery and harvest success population rates studies. rates. Hatchery studies. status studies Distribution and in analyses. Broodstock season run Broodstock management forecasting. management. Tag-related Low to moderate low low high low MortalityRisk Fish type Mostly hatchery, Mostly PBT: hatchery Mostly larger Hatchery fish (wild & some wild hatchery only hatchery fish hatchery) populations GSI: All fish Fish Size >60mm >50mm Any >110mm Any Geographic Entire water Entire GSI: Entire Primarily at or Entire Coverage anadromous zones anadromous Columbia near anadromous to blocked areas zone and River Basin for hydropower zone and ocean all Steelhead structures and and Chinook. associated PBT: Primarily reservoirs. Snake basin hatchery Steelhead and Chinook
Figure 2. PIT tagged fish release and recovery These PIT tag related sites give a sense of the widespread distribution of all tagging activities in the Columbia River basin (Source: PTAGIS). Table 1. Summary of the utility and characteristics of the most commonly used fish tags. PIT CWT Genetics Acoustic/Radio Special Use (Otolith and geochem) Tag Use Hydrosystem passage and survival, population status, habitat studies, predation studies and some hatchery studies. Distribution and in season run forecasting. Stock survival, productivity and distribution. Fisheries composition and harvest rates. Hatchery analyses. Broodstock management. Population status, some harvest, some habitat, relative reproductive success studies. Broodstock management Hydrosystem route specific passage studies, some habitat studies, some population status studies Life history studies, hatchery studies, migration timing, growth rates Tag-related MortalityRisk Low to moderate low low high low Fish type (wild & hatchery) Mostly hatchery, some wild populations Mostly hatchery PBT: hatchery only GSI: All fish Mostly larger hatchery fish Hatchery fish Fish Size >60mm >50mm Any >110mm Any Geographic Coverage Entire water anadromous zones to blocked areas Entire anadromous zone and ocean GSI: Entire Columbia River Basin for all Steelhead and Chinook. PBT: Primarily Snake basin hatchery Steelhead and Chinook Primarily at or near hydropower structures and associated reservoirs. Entire anadromous zone and
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