Evidence from the genetics of landbirds for a forested pleistocene glacial refugium in the haida gwaii area

Christin L. Pruett, Carrie M. Topp, James M. Maley, Kevin McCracken, Sievert Rohwer, Sharon Birks, Spencer G. Sealy, Kevin Winker

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

Pleistocene refugia likely contributed to the modern biodiversity of northern areas. Using the mitochondrial DNA cytochrome-b gene, we compared 11 forest-dwelling bird species from Haida Gwaii (formerly the Queen Charlotte Islands) with populations from Alaska, Washington, and other locations in the United States. If Haida Gwaii was an unglaciated refugium, its modern populations should feature a high number of endemic lineages and divergence times that predate the end of the last glacial maximum, ca. 13,000-19,000 years before present (ybp). Furthermore, the genetic diversity of these populations should be higher than that in areas colonized after the glacial retreat. Four of the species examined from Haida Gwaii showed old divergences and a high percentage of endemic lineages: the Northern Saw-whet Owl (Aegolius acadicus), Hairy Woodpecker (Picoides villosus), Steller's Jay (Cyanocitta stelleri), and Pine Grosbeak (Pinicola enucleator); all four have endemic subspecies on these islands. The Pacific Wren (Troglodytes pacificus) and Song Sparrow (Melospiza melodia) showed genetic trends associated with populations in refugia, including high genetic diversity on Haida Gwaii. Estimated divergence dates of these six species were fairly uniform (~20,000-30,000 ybp), being greatest for the Hairy Woodpecker (>70,000 ybp) and Pine Grosbeak (>120,000 ybp). There was an association between apparent occurrence in a refugium and a sedentary lifehistory strategy and a trend for endemic subspecies (4 of 6) also to show this association. Our findings suggest that the Haida Gwaii area hosted a forested refugium during the cycles of climatic change in the late Pleistocene.

Original languageEnglish (US)
Pages (from-to)725-737
Number of pages13
JournalCondor
Volume115
Issue number4
DOIs
StatePublished - Nov 2013
Externally publishedYes

Fingerprint

refugium
refuge habitats
Pleistocene
woodpeckers
divergence
subspecies
Pinus
Troglodytes
Picoides
genetic trend
Troglodytidae
genetic variation
Passeriformes
glaciation
Strigiformes
song
Last Glacial Maximum
cytochrome b
mitochondrial DNA
animal communication

Keywords

  • Community genetics
  • Endemism
  • Population genetics
  • Queen Charlotte Islands
  • Seasonal migration

ASJC Scopus subject areas

  • Animal Science and Zoology
  • Ecology, Evolution, Behavior and Systematics

Cite this

Evidence from the genetics of landbirds for a forested pleistocene glacial refugium in the haida gwaii area. / Pruett, Christin L.; Topp, Carrie M.; Maley, James M.; McCracken, Kevin; Rohwer, Sievert; Birks, Sharon; Sealy, Spencer G.; Winker, Kevin.

In: Condor, Vol. 115, No. 4, 11.2013, p. 725-737.

Research output: Contribution to journalArticle

Pruett, CL, Topp, CM, Maley, JM, McCracken, K, Rohwer, S, Birks, S, Sealy, SG & Winker, K 2013, 'Evidence from the genetics of landbirds for a forested pleistocene glacial refugium in the haida gwaii area', Condor, vol. 115, no. 4, pp. 725-737. https://doi.org/10.1525/cond.2013.120123
Pruett, Christin L. ; Topp, Carrie M. ; Maley, James M. ; McCracken, Kevin ; Rohwer, Sievert ; Birks, Sharon ; Sealy, Spencer G. ; Winker, Kevin. / Evidence from the genetics of landbirds for a forested pleistocene glacial refugium in the haida gwaii area. In: Condor. 2013 ; Vol. 115, No. 4. pp. 725-737.
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