| Roza
Dam Steelhead |
| Project
Objectives |
| Introduction |
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| 1) Compare a 2006 collection from Roza Dam to the previous |
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| collections from the upper Yakima |
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| SH
Population |
| Roza
Dam SH |
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| Why? |
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| Inferences about population dynamics based on genetic data |
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| rely on accurately estimating allele frequencies |
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| Possible explanations for temporal instability are: |
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| 1) The population is
experiencing genetic drift |
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| 2) There is gene flow from a
differentiated stock |
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| 3) The collection itself is
not a valid population sample |
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| Resident
Trout |
| Prosser
Dam |
| Conclusions |