Using DNA markers to delineate populations of Yakima Basin steelhead

Introduction

Prosser Dam

Resident Trout

Roza Dam SH

SH Population

Conclusions

• Resident trout sampled are more similar to Naches River and

Roza Dam steelhead than they are to any other steelhead in the

reference baseline

• Resident trout samples appear genetically undifferentiated

from the steelhead collections