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Biogeography Of The American Pika (Ochotona Princeps) In Oregon And Southern Washington: Illuminating Genetic Relationships Among Disjunct Populations, George Washington Batten Iii
Biogeography Of The American Pika (Ochotona Princeps) In Oregon And Southern Washington: Illuminating Genetic Relationships Among Disjunct Populations, George Washington Batten Iii
Dissertations and Theses
The American pika (Ochotona princeps) finds moderately warm temperatures (>25°C) lethally stressful, and at the end of the last Ice Age 10,000 years ago was forced to disperse to cooler, "sky island" mountaintops where they are almost exclusively found today. Thirty six subspecies are recognized, all established using morphological characters, and it is uncertain whether these subspecies' designations are corroborated by genetic analyses. This study elucidates three hypotheses regarding populations in Oregon and southern Washington: 1) O. p. fumosa constitutes a subspecies distinct form O. p. brunnescens, 2) the Columbia River constitutes a barrier to gene …