A New Subspecies of Great Gray Owl (Strix nebulosa) in the Sierra Nevada of California, U.S.A.
Brindamos un diagnóstico para una nueva subespecie de Strix nebulosa para el centro de la Sierra Nevada de California basados en previos análisis filogenéticos y genéticos poblacionales y en la distribución alopátrica. La nueva subespecie está definida por análisis filogenéticos de 1920 pares de bases de una región de control y en la subunidad 2 de la NADH deshidrogenasa de una secuencia de ADN mitocondrial y respaldada por una diferenciación genética poblacional en 30 marcadores de ADN microsatelital nuclear. La distribución de esta subespecie incluye ecosistemas boscosos y forestales y praderas asociadas entre los 700 m y 2600 m en el centro de la Sierra Nevada en California, EEUU. Esta subespecie de S. nebulosa está amenazada por numerosos factores y justifica esfuerzos de conservación continuos.Resumen
Phylogenetic relationships of S. n. nebulosa and S. n. yosemitensis based on 1938 base pair alignment of nad2 and control region sequence. The Sierra Nevada samples are monophyletic, whereas the remaining 17 S. n. nebulosa haplotypes show no geographic structure. Numbers below branches are bootstrap values (Maximum-likelihood); numbers above branches are Bayesian posterior probabilities. Figure adapted from Hull et al. 2010.
Lateral (A) and ventral (B) views of typical adult Strix nebulosa yosemitensis plumage. The specimen shown is the holotype housed at the Museum of Wildlife and Fish Biology at the University of California, Davis. See text for description of morphological characters.
Breeding distribution of Strix nebulosa yosemitensis (GGOW) in the central Sierra Nevada as inferred from historic nesting and fledging points. Crosses indicate nesting records and open circles indicate fledging records. These data were taken from previously published research (Quady 2008; Winter 1980, 1985, 1986), unpublished records from ongoing research conducted by the U.S.D.A. Forest Service Pacific Southwest Research Station, and personal communications with district biologists in the Sierra, Sequoia, and Stanislaus national forests. Data are current as of October 2013.
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