Phylogeography of spruce beetles ( Dendroctonus rufipennis Kirby) (Curculionidae: Scolytinae) in North America
Abstract Tree-feeding insects that are widespread in north temperate regions are excellent models for studying how past glaciations have impacted differentiation and speciation. We used mitochondrial DNA (mtDNA) sequences and allele frequencies at nine microsatellite loci to examine genetic populati...
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ftciteseerx:oai:CiteSeerX.psu:10.1.1.1037.3587 2023-05-15T17:22:32+02:00 Phylogeography of spruce beetles ( Dendroctonus rufipennis Kirby) (Curculionidae: Scolytinae) in North America L U A S M A R O J A , * S T E V E N M B O G D A N O W I C Z , * K I M B E R L Y F W A L L I N The Pennsylvania State University CiteSeerX Archives 2007 application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.1037.3587 http://www.entomology.wisc.edu/raffa/Research/PDFs/Spruce_beetle.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.1037.3587 http://www.entomology.wisc.edu/raffa/Research/PDFs/Spruce_beetle.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://www.entomology.wisc.edu/raffa/Research/PDFs/Spruce_beetle.pdf text 2007 ftciteseerx 2020-03-08T01:17:03Z Abstract Tree-feeding insects that are widespread in north temperate regions are excellent models for studying how past glaciations have impacted differentiation and speciation. We used mitochondrial DNA (mtDNA) sequences and allele frequencies at nine microsatellite loci to examine genetic population structure across the current range of the spruce beetle ( Dendroctonus rufipennis ), an economically important insect in North America. Two major haplotype groups occur across northern North America, from Newfoundland to Alaska, on white spruce ( Picea glauca ), and a third distinctive haplotype group occurs throughout the Rocky Mountains on Engelmann spruce ( Picea engelmannii ). The two mtDNA lineages found in northern populations are 3 -4% divergent from each other and from the lineages found in the Rocky Mountains. Analyses of microsatellite data also suggest the existence of major population groupings associated with different geographical regions. In the Pacific Northwest, concordant contact zones for genetically distinct populations of spruce beetles and their principal hosts appear to reflect recent secondary contact. Although we could detect no evidence of historical mtDNA gene flow between allopatric population groups, patterns of variation in the Pacific Northwest suggest recent hybridization and introgression. Together with the pollen record for spruce, they also suggest that beetles have spread from at least three glacial refugia. A minimum estimate of divergence time between the Rocky Mountain and northern populations was 1.7 Myr (million years), presumably reflecting the combined effects of isolation during multiple glacial cycles. Text Newfoundland Alaska Unknown Pacific |
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English |
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Abstract Tree-feeding insects that are widespread in north temperate regions are excellent models for studying how past glaciations have impacted differentiation and speciation. We used mitochondrial DNA (mtDNA) sequences and allele frequencies at nine microsatellite loci to examine genetic population structure across the current range of the spruce beetle ( Dendroctonus rufipennis ), an economically important insect in North America. Two major haplotype groups occur across northern North America, from Newfoundland to Alaska, on white spruce ( Picea glauca ), and a third distinctive haplotype group occurs throughout the Rocky Mountains on Engelmann spruce ( Picea engelmannii ). The two mtDNA lineages found in northern populations are 3 -4% divergent from each other and from the lineages found in the Rocky Mountains. Analyses of microsatellite data also suggest the existence of major population groupings associated with different geographical regions. In the Pacific Northwest, concordant contact zones for genetically distinct populations of spruce beetles and their principal hosts appear to reflect recent secondary contact. Although we could detect no evidence of historical mtDNA gene flow between allopatric population groups, patterns of variation in the Pacific Northwest suggest recent hybridization and introgression. Together with the pollen record for spruce, they also suggest that beetles have spread from at least three glacial refugia. A minimum estimate of divergence time between the Rocky Mountain and northern populations was 1.7 Myr (million years), presumably reflecting the combined effects of isolation during multiple glacial cycles. |
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The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
L U A S M A R O J A , * S T E V E N M B O G D A N O W I C Z , * K I M B E R L Y F W A L L I N |
spellingShingle |
L U A S M A R O J A , * S T E V E N M B O G D A N O W I C Z , * K I M B E R L Y F W A L L I N Phylogeography of spruce beetles ( Dendroctonus rufipennis Kirby) (Curculionidae: Scolytinae) in North America |
author_facet |
L U A S M A R O J A , * S T E V E N M B O G D A N O W I C Z , * K I M B E R L Y F W A L L I N |
author_sort |
L U |
title |
Phylogeography of spruce beetles ( Dendroctonus rufipennis Kirby) (Curculionidae: Scolytinae) in North America |
title_short |
Phylogeography of spruce beetles ( Dendroctonus rufipennis Kirby) (Curculionidae: Scolytinae) in North America |
title_full |
Phylogeography of spruce beetles ( Dendroctonus rufipennis Kirby) (Curculionidae: Scolytinae) in North America |
title_fullStr |
Phylogeography of spruce beetles ( Dendroctonus rufipennis Kirby) (Curculionidae: Scolytinae) in North America |
title_full_unstemmed |
Phylogeography of spruce beetles ( Dendroctonus rufipennis Kirby) (Curculionidae: Scolytinae) in North America |
title_sort |
phylogeography of spruce beetles ( dendroctonus rufipennis kirby) (curculionidae: scolytinae) in north america |
publishDate |
2007 |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.1037.3587 http://www.entomology.wisc.edu/raffa/Research/PDFs/Spruce_beetle.pdf |
geographic |
Pacific |
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Pacific |
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Newfoundland Alaska |
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Newfoundland Alaska |
op_source |
http://www.entomology.wisc.edu/raffa/Research/PDFs/Spruce_beetle.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.1037.3587 http://www.entomology.wisc.edu/raffa/Research/PDFs/Spruce_beetle.pdf |
op_rights |
Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
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1766109248466452480 |