3 results match your criteria: "CW 405 Biological Sciences Center[Affiliation]"

Origin of Dermacentor albipictus (Acari: Ixodidae) on elk in the Yukon, Canada.

J Wildl Dis

July 2014

1  Department of Biological Sciences, University of Alberta, CW 405 Biological Sciences Center, Edmonton, Alberta, Canada T6G 2E9.

Winter ticks (Dermacentor albipictus) on elk (Cervus elaphus canadensis) have recently increased in numbers in the Yukon, Canada, potentially posing risks to other indigenous host species in the region. To evaluate the regional source of winter ticks in the Yukon, we sequenced one nuclear (ITS-2) and two mitochondrial (16SrRNA and COI) genes, and genotyped 14 microsatellite loci from 483 winter tick specimens collected across North America. We analyzed genetic variation across the geographic and host ranges of this tick species with the use of variance partitioning, Bayesian clustering, and standard population genetic analyses.

View Article and Find Full Text PDF
Article Synopsis
  • The study focuses on the winter tick Dermacentor albipictus and its impact on ungulates like moose, highlighting the confusion caused by genetic variations among tick populations.
  • Researchers sequenced several mitochondrial and nuclear DNA markers from ticks sampled from different deer populations in Alberta to examine genetic variation and its relationship to physical traits.
  • The findings suggest that despite significant differences in mitochondrial DNA indicating potential separate species, other genetic and morphological analyses point to all sampled ticks belonging to a single species, underscoring the need for comprehensive methods in identifying species.
View Article and Find Full Text PDF

Sympatric insect species that do not share sex pheromone components but have a common host and overlapping adult flight periods are potential targets for the development of a combined sex pheromone-based monitoring tool. A system using a single synthetic pheromone blend in a single lure to bait a single trap to monitor two pests simultaneously represents a novel approach. In this study, a combined pheromone-based monitoring system was developed for two lepidopterous defoliators of trembling aspen Populus tremuloides Michenaux in western Canada, Malacosoma disstria Hübner (Lepidoptera: Lasoicampidae) and Choristoneura conflictana (Walker) (Lepidoptera: Tortricidae).

View Article and Find Full Text PDF