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Are the “ seeds ” of spatial variation in cyclic dynamics apparent in spatially-replicated short time-series ? An example from the forest tent caterpillar
Download2005
Variation in the pattern of dynamics of the forest tent caterpillar was assessed over a 13-year interval of population collapse and increase among 68 sites within a 420 km2 region. Patterns of population change were compared with the level of forest fragmentation among sites, and interpreted in...
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Assessing the mating status of male obliquebanded leafrollers Choristoneura rosaceana (Lepidoptera: Tortricidae) by dissection of male and female moths
Download2003
Borden, J. H., Delury, L. E., Judd, G. J. R., Evenden, M. L.
Abstract: We tested several methods for assessing the mating status of male obliquebanded leafrollers, Choristoneura rosaceana (Harris) (Lepidoptera: Tortricidae). In four experiments, we established that the technique developed to determine mating status of male spruce budworms, Choristoneura...
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Assessment of commercially available pheromone lures for monitoring diamondback moth (Lepidoptera: Plutellidae) in canola
Download2010
Abstract: Sex pheromone monitoring lures from five different commercial sources were compared for their attractiveness to male diamondback moth, Plutella xylostella L. (Lepidoptera: Plutellidae) in canola, Brassica napus L., fields in western Canada. Lures that had the highest pheromone release...
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Delimitation and identification of crescent butterflies (Nymphalidae: Phyciodes) in Alberta using molecular and morphological techniques
DownloadFall 2022
Species delimitation can be challenging, especially in taxonomic groups that exhibit little morphological divergence. Many techniques and concepts have been developed for detecting species boundaries, and molecular methods are becoming increasingly common. Next generation sequencing techniques...
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Developing techniques for monitoring forest tent caterpillar populations using synthetic pheromones
Download2003
Abstract: To effectively monitor forest tent caterpillar, Malacosoma disstria Hubner (Lepidoptera: Lasiocampidae), populations using sex pheromone baited traps, we field-tested pheromone dispenser (lure) type, lure age, and trap design using (Z,E)-5,7-dodecadienal:(Z,Z)-5,7-dodecadienal (100:1)....
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Following the plume: Development of a pheromone-based monitoring and management program for Coleophora deauratella (Lepidoptera: Coleophoridae)
DownloadFall 2014
The reliance of moths on pheromone-mediated communication for mate location makes sex pheromones ideal candidates for exploitation in integrated pest management (IPM) programs. Pheromones make sensitive tools that can detect invasive species at low population densities and in new habitats. The...
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Fall 2015
Speciation can be an elaborate process. Delimiting species and reconstructing evolutionary relationships may be similarly complex, revealing gene tree discordance, cryptic species, geographic structuring or hybridization. In order to solve such systematic problems, a careful balance should be...
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Spring 2012
Blackleg, caused by Leptosphaeria maculans, is one of the most damaging diseases of oilseed rape, Brassica napus. Interspecific hybridization between B. napus and B. carinata was done to transfer resistance to PG4 type blackleg pathotype from B. carinata into B. napus. In vitro ovule culture and...