Affiliation:
1. Entomology Research Laboratory, University of Vermont, Burlington, VT 05405, USA
Abstract
The winter tick ( Dermacentor albipictus (Packard, 1869); Acari: Ixodidae) significantly affects the health and productivity of North American moose ( Alces alces (Linnaeus, 1758); Artiodactyla: Cervidae). Survival of off-host stages of Ixodid ticks depends on microclimate driven in part by extrinsic factors resulting from weather, such as temperature, humidity, drought, and floods. The impact of some of these abiotic factors is unclear for D. albipictus. The effect of water submergence on biological parameters of engorged, adult, females, and unfed larvae was assessed in the laboratory. Survival of adult females after submergence for 3 days was 88% with significant effects on their ability to oviposit. After 5 weeks, 63% of larvae (1-month-old) survived submergence in water, whereas survival of larvae (3-month-old) was reduced to 23% after 7 days. The off-host stages of D. albipictus have variable tolerance to periods of submergence that may influence the number of larvae available on the landscape for recruitment to moose in autumn.
Publisher
Canadian Science Publishing
Subject
Animal Science and Zoology,Ecology, Evolution, Behavior and Systematics
Reference44 articles.
1. Aalangdong O.I. 1994. Winter tick (Dermacentor albipictus) ecology and transmission in Elk Island National Park, Alberta. M.S. Thesis. University of Alberta, Edmonton.
2. Off-host survival and reproductive success of adult female winter ticks, Dermacentor albipictus in seven habitat types of Central Alberta
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