Skip to Main Content
Contrasting geographic patterns of genetic differentiation in body size and development time with reproductive isolation in Dendroctonus ponderosae (Coleoptera: Curculionidae, Scolytinae)Author(s): Ryan R. Bracewell; Michael E. Pfrender; Karen E. Mock; Barbara J. Bentz
Source: Annals of the Entomological Society of America. 106(3): 385-391.
Publication Series: Scientific Journal (JRNL)
Station: Rocky Mountain Research Station
View PDF (262.21 KB)
Related Research Highlights
Combined Effects of a Changing Climate Drive Mountain Pine Beetle Outbreaks
DescriptionBody size and development time are two critical phenotypic traits that can be highly adaptive in insects. Recent population genetic analyses and crossing experiments with the mountain pine beetle (Dendroctonus ponderosae Hopkins) have described substantial levels of neutral molecular genetic differentiation, genetic differences in phenotypic traits, and reproductive isolation. To determine whether genetic differences in adaptive phenotypic traits exist that correspond to reproductive boundaries, we conducted a common garden experiment with seven D. ponderosae populations previously used to identify reproductive incompatibilities. Genetic differences in development time were striking between faster developing, and more synchronized, northern populations and slower developing, and less synchronized, southern populations. Additionally, genetic differences in average body size were found between many populations. Differences in these two traits, however, failed to clearly demarcate populations that exhibit reproductive incompatibilities. Our results suggest that local selection pressures likely drive divergence in these two traits that is largely independent of the evolution of reproductive isolation in D. ponderosae.
- You may send email to firstname.lastname@example.org to request a hard copy of this publication.
- (Please specify exactly which publication you are requesting and your mailing address.)
- We recommend that you also print this page and attach it to the printout of the article, to retain the full citation information.
- This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.
CitationBracewell, Ryan R.; Pfrender, Michael E.; Mock, Karen E.; Bentz, Barbara J. 2013. Contrasting geographic patterns of genetic differentiation in body size and development time with reproductive isolation in Dendroctonus ponderosae (Coleoptera: Curculionidae, Scolytinae). Annals of the Entomological Society of America. 106(3): 385-391.
Keywordsmountain pine beetle, speciation, adaptation, life-history, bark beetle
- Genetic architecture and phenotypic plasticity of thermally-regulated traits in an eruptive species, Dendroctonus ponderosae
- Mountain pine beetle voltinism and life history characteristics across latitudinal and elevational gradients in the western United States
- Genetic architecture of differences in fitness traits among geographically separated Dendroctonus ponderosae populations
XML: View XML