PRODUCTIVITY OF WINTER TICKS (DERMACENTOR ALBIPICTUS) COLLECTED FROM MOOSE KILLED ON ONTARIO ROADS
Adult female winter ticks, Dermacentor albipictus, were collected from moose killed on Ontario roads in April and May. Fifty-one partially engorged ticks in 1979 and 271 partially engorged ticks in 1980 were maintained in incubators held at 26℃ and 22℃ respectively. Ticks began laying eggs 9-13 days following the death of the moose. The number of eggs laid was positively correlated to the weight of the female ticks (r22℃ = +0.81, r26℃ = +0.78). Many ticks laid 2000 - 6000 eggs and some laid an estimated 8000 - 10,000 eggs. The incubation period was 31.5 ± 1.0 (30-34) days at 26℃ and 47 ± 2.87 (22-52) days at 22℃. The significance of the results to the moose-winter tick association is discussed.
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