Forest Thinning Affects Reproduction in Pine Engravers (Coleoptera: Scolytidae) Breeding in Felled Lodgepole Pine Trees

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dc.contributor.authorHindmarch, T.D.en
dc.contributor.authorReid, Mary L.en
dc.contributor.departmentBiological Sciencesen
dc.contributor.facultyFaculty of Scienceen
dc.contributor.institutionUniversity of Calgaryen
dc.date.accessioned2006-09-18T19:28:33Z
dc.date.available2006-09-18T19:28:33Z
dc.date.issued2001
dc.description.abstractReproduction in bark beetles (Coleoptera: Scolytidae) is known to be affected by abiotic factors, especiallytemperature, and bythe qualityof individual beetles. Both of these factors are affected byforest structure, yet the effects of forest structure on reproduction in bark beetles have not been widelyshown in Þeld studies. Here we investigate how changes in forest structure due to thinning of mature lodgepole pine, Pinus contorta variety latifolia Engelmann, stands affect reproduction in pine engravers, Ips pini (Say), breeding in felled trees. To do this, we excavated pine engraver gallerysy stems in thinned and unthinned stands at the end of the breeding season. Males in thinned stands attracted more females than in unthinned stands. Also, females in thinned stands extended their egg galleries farther, laid more eggs, and had higher egg densities than in unthinned stands. These results are consistent with increased temperatures in thinned stands, but mayalso be attributable to differences in individual qualityresulting from easier dispersal in thinned stands. Regardless, the observed increases in reproduction likelyreßect higher reproductive success in thinned stands than in unthinned stands, and the effects of thinning on population dynamics of bark beetles should be further investigated.en
dc.description.refereedyesen
dc.format.extent38 bytes
dc.format.mimetypetext/plain
dc.identifier.citation"Forest Thinning Affects Reproduction in Pine Engravers (Coleoptera: Scolytidae) Breeding in Felled Lodgepole Pine Trees " T.D. Hindmarch, Mary L. Reid, Environ. Entomol. 30(5): 919-924 (2001)en
dc.identifier.doihttp://dx.doi.org/10.11575/PRISM/35137
dc.identifier.issn1438-3896
dc.identifier.urihttp://hdl.handle.net/1880/43474
dc.language.isoenen
dc.publisherEntomological Society of Americaen
dc.publisher.urlhttp://www.entsoc.org/en
dc.subjectBiologyen
dc.subject.otherIps pinien
dc.subject.otherforest structureen
dc.subject.othertemperatureen
dc.subject.otherindividual qualityen
dc.subject.otherdensityen
dc.subject.otheregg galleriesen
dc.titleForest Thinning Affects Reproduction in Pine Engravers (Coleoptera: Scolytidae) Breeding in Felled Lodgepole Pine Treesen
dc.typejournal article
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