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1 February 2002 HOLARCTIC PHYLOGEOGRAPHY AND SPECIES LIMITS OF THREE-TOED WOODPECKERS
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Abstract

We compared mitochondrial DNA sequences of Three-toed Woodpeckers (Picoides tridactylus) within and between Eurasia and North America. Samples from the two continents are each reciprocally monophyletic, and differ by approximately 4% sequence divergence, suggesting that a separate species exists on each continent. We recommend formal taxonomic action. Within continents, no phylogeographic structuring was found, suggesting that both species have recently expanded their ranges following the end of the last ice age.

Filogeografía Holártica y Límites de la Especie Picoides tridactylus

Resumen. Comparamos secuencias de ADN mitocondrial en Picoides tridactylus, dentro y entre Eurasia y América del Norte. Las muestras de cada uno de los dos continentes son recíprocamente monofiléticas y difieren aproximadamente en un 4% de divergencia secuencial, sugiriendo que existe una especie distinta en cada continente. Recomendamos acción taxonómica formal. No encontramos estructura filogeográfica dentro de los continentes, sugiriendo que ambas especies han expandido recientemente sus rangos luego del final de la última era glacial.

Robert M. Zink, Sievert Rohwer, Sergei Drovetski, Rachelle C. Blackwell-Rago, and Shannon L. Farrell "HOLARCTIC PHYLOGEOGRAPHY AND SPECIES LIMITS OF THREE-TOED WOODPECKERS," The Condor 104(1), 167-170, (1 February 2002). https://doi.org/10.1650/0010-5422(2002)104[0167:HPASLO]2.0.CO;2
Received: 2 May 2001; Accepted: 1 October 2001; Published: 1 February 2002
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