Please use this identifier to cite or link to this item: https://hdl.handle.net/1959.11/22313
Title: How the Mountain Pine Beetle ('Dendroctonus ponderosae') Breached the Canadian Rocky Mountains
Contributor(s): Janes, Jasmine  (author)orcid ; Li, Yisu (author); Sperling, Felix A H (author); Keeling, Christopher I (author); Yuen, Macaire M S (author); Boone, Celia K (author); Cooke, Janice E K (author); Bohlmann, Joerg (author); Huber, Dezene P W (author); Murray, Brent W (author); Coltman, David W (author)
Publication Date: 2014
Open Access: Yes
DOI: 10.1093/molbev/msu135Open Access Link
Handle Link: https://hdl.handle.net/1959.11/22313
Abstract: The 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.
Publication Type: Journal Article
Source of Publication: Molecular Biology and Evolution, 31(7), p. 1803-1815
Publisher: Oxford University Press
Place of Publication: United States of America
ISSN: 1537-1719
0737-4038
Fields of Research (FoR) 2008: 060399 Evolutionary Biology not elsewhere classified
060303 Biological Adaptation
Fields of Research (FoR) 2020: 310499 Evolutionary biology not elsewhere classified
310403 Biological adaptation
Socio-Economic Objective (SEO) 2008: 970106 Expanding Knowledge in the Biological Sciences
960810 Mountain and High Country Flora, Fauna and Biodiversity
Socio-Economic Objective (SEO) 2020: 280102 Expanding knowledge in the biological sciences
180606 Terrestrial biodiversity
Peer Reviewed: Yes
HERDC Category Description: C1 Refereed Article in a Scholarly Journal
Appears in Collections:Journal Article
School of Environmental and Rural Science

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