How the mountain pine beetle (Dendroctonus ponderosae) breached the Canadian Rocky Mountains

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dc.contributor.authorSperling, Felix A. H.
dc.contributor.authorMurray, Brent W.
dc.contributor.authorLi, Yisu
dc.contributor.authorColtman, David W.
dc.contributor.authorBohlmann, Joerg
dc.contributor.authorJanes, Jasmine K.
dc.contributor.authorCooke, Janice E. K.
dc.contributor.authorBoone, Celia K.
dc.contributor.authorHuber, Dezene P.W.
dc.contributor.authorKeeling, Christopher I.
dc.contributor.authorYuen, Macaire M. S.
dc.date.accessioned2025-05-01T22:19:58Z
dc.date.available2025-05-01T22:19:58Z
dc.date.issued2014-01-01
dc.descriptionThe mountain pine beetle (MPB; Dendroctonus ponderosae Hopkins), a major pine forest pest native to western North America, has extended its range north and eastward during an ongoing outbreak. Determining how the MPB has expanded its range to breach putative barriers, whether physical (nonforested prairie and high elevation of the Rocky Mountains) or climatic (extreme continental climate where temperatures can be below −40 °C), may contribute to our general understanding of range changes as well as management of the current epidemic. Here, we use a panel of 1,536 single nucleotide polymorphisms (SNPs) to assess population genetic structure, connectivity, and signals of selection within this MPB range expansion. Biallelic SNPs in MPB from southwestern Canada revealed higher genetic differentiation and lower genetic connectivity than in the northern part of its range. A total of 208 unique SNPs were identified using different outlier detection tests, of which 32 returned annotations for products with putative functions in cholesterol synthesis, actin filament contraction, and membrane transport. We suggest that MPB has been able to spread beyond its previous range by adjusting its cellular and metabolic functions, with genome scale differentiation enabling populations to better withstand cooler climates and facilitate longer dispersal distances. Our study is the first to assess landscape-wide selective adaptation in an insect. We have shown that interrogation of genomic resources can identify shifts in genetic diversity and putative adaptive signals in this forest pest species.
dc.identifier.doihttps://doi.org/10.7939/R3SQ8QT92
dc.language.isoen
dc.relationhttp://dx.doi.org/10.1093/molbev/msu135
dc.relation.isversionofJanes, J.K. , Li, Y., Keeling, C.I., Yuen, M.S., Boone, C.K., Cooke, J., Bohlmann, J., Huber, D.P.W., Murray, B.W., Roe, A.D., Rice, A.V., Langer, D.W., Coltman, D.W., Sperling, F.A.H. (2014). How the mountain pine beetle (Dendroctonus ponderosae) breached the Canadian Rocky Mountains. Molecular Biology and Evolution, 31(7), 1803-15. doi: 10.1093/molbev/msu135.
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/
dc.subjectDispersal
dc.subjectStructure
dc.subjectOutlier detection
dc.subjectConnectivity
dc.subjectPopulation-genetics
dc.titleHow the mountain pine beetle (Dendroctonus ponderosae) breached the Canadian Rocky Mountains
dc.typehttp://purl.org/coar/resource_type/c_6501 http://purl.org/coar/version/c_970fb48d4fbd8a85
ual.jupiterAccesshttp://terms.library.ualberta.ca/public

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