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1990
Sperling, F. A. H., Spence, J. R.
Five species of Limnoporus Stål (L. canaliculatus [Say], L. dissortis [Drake and Harris], L. nearcticus [Kelton], L. notabilis [Drake and Hottes], and L. rufoscutellatus [Latreille]) were each sampled at 20 electrophoretic loci. Twofold differences among species in mean heterozygosity appear to...
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Amplified mitochondrial DNA as a diagnostic marker for species of conifer-feeding Choristoneura (Lepidoptera: Tortricidae)
Download1995
Hickey, D. A., Sperling, F. A. H.
Abstract: We describe a method for identifying conifer-feeding species and lineages of Choristoneura Lederer in Canada and Alaska. The method relies on amplification of mitochondrial (mt) DNA by the polymerase chain reaction (PCR); amplified DNA is then digested with restriction enzymes to give...
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2011
Whitehouse, C. M., Evenden, M. L., Sperling, F. A. H., Strong, W. B., Roe, A. D.
Abstract: Coneworms, Dioryctria Zeller (Lepidoptera: Pyralidae), are destructive pests of conifers across North America, and members of several different species groups present significant pest-management challenges in conifer seed orchards. Dioryctria abietivorella Grote (abietella group) is the...
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Identification of Dioryctria (Lepidoptera : Pyralidae) in a seed orchard at Chico, California
Download2006
Gillette, N. E., Sperling, F. A. H., Roe, A. D., Stein, J. D.
Abstract: Species of Dioryctria Zeller (Lepidoptera: Pyralidae) are important pests of conifers, particularly in seed orchards, and accurate species identification is needed for effective monitoring and control. Variable forewing morphology and lack of species-specific genitalic features hinder...
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Lyme borreliosis in Canada: Biological diversity and diagnostic complexity from an entomological perspective
Download2009
Sperling, F. A. H., Sperling, J. L. H.
Lyme borreliosis (LB), also known as Lyme disease, is emerging as a serious tick-borne illness across Canada. More than three decades of research on LB in North America and Europe have provided a large, complex body of research involving well-documented difficulties at several levels. However,...
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Mitochondrial DNA variation and identification of bark weevils in the Pissodes strobi species group in western Canada (Coleoptera: Curculionidae)
Download1995
Sperling, F. A. H., Langor, D. W.
Abstract: Morphological, allozyme, and chromosomal characters and ecological traits have limited value for discriminating among four closely related Pissodes spp. known from western Canada. We amplified a 1585-bp segment of mitochondrial DNA (mtDNA), including half of the cytochrome oxidase I...
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2007
Sperling, F. A. H., MacQuarrie, C. J. K., Langor, D. W.
Mitochondrial cytochrome oxidase I and 11 genes were sequenced for two invasive alien birch (Betula L. [Betulaceae]) leaf-mining sawflies, Profenusa thomsoni (Konow, 1886) (Hymenoptera: Tenthredinidae) and Scolioneura betuleti (King, 1816) (Hymenoptera: Tenthredinidae), accidentally introduced...
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Molecular Phylogeny Within and Between Species of the Archips argyrospila Complex ( Lepidoptera : Tortricidae )
Download2001
Sperling, F. A. H., Kruse, J. J.
Abstract: The Archips argyrospila complex consists of a series of morphologically indistinct populations with a confusing array of pheromone and host types. No phylogenetic studies on the genus Archips or any of its species groups have previously been published. We examined DNA variation in a 475...