| species of coccidia (apicomplexa: eimeriidae) infecting pikas from alaska, u.s.a. and northeastern siberia, russia. | eighty-eight fecal samples from 2 species of pika, ochotona collaris and ochotona hyperborea, collected in alaska (n = 53) and russia (n = 35), respectively, were examined for the presence of coccidia (apicomplexa: eimeriidae). five oocyst morphotypes were observed. in o. collaris, we found eitmeria calentinei, eimeria cryptobarretti, and eimeria klondikensis, whereas in o. hyperborea, we found eimeria banffensis, e. calentinei, e. cryptobarretti, e. klondikensis, and isospora marquardti. this s ... | 2007 | 18163366 |
| colonization from divergent ancestors: glaciation signatures on contemporary patterns of genomic variation in collared pikas (ochotona collaris). | identifying the genetic structure of a species and the factors that drive it is an important first step in modern population management, in part because populations evolving from separate ancestral sources may possess potentially different characteristics. this is especially true for climate-sensitive species such as pikas, where the delimitation of distinct genetic units and the characterization of population responses to contemporary and historical environmental pressures are of particular int ... | 2015 | 26096099 |