This is a two year investigation of the temporal and spatial distribution of questing ixodid ticks in Marquette County, Michigan during 2008 and 2009. The county was divided into two ranges, eastern and western using Marquette County's natural geologic division. Two sites in each of four dominant habitat types (field, hardwood, mix, and conifer) were selected in each range (16 sites total). Four 100 meter transects were sampled weekly by dragging. Each time sampled, two of the four plots at a site were randomly selected and within each chosen plot, two 100 meter transects were randomly selected. Season totals were 779 adult Dermacentor variabilis (421 females and 358 males) and 768 adult D. variabilis (381 females and 387 males) in 2008 and 2009, respectively. A single adult Ixodes scapularis was collected each year in the same field in the western range. No immature stages of questing ticks were detected. Chi-square analysis indicated significantly more ticks were collected in the eastern range compared to western and significantly more ticks were collected in the field compared to the other three habitats. Significantly more females were collected than males in 2008 but not in 2009. In 2008, questing tick abundance peaked late spring/early summer with a steady decline whereas in 2009, the peak occurred in mid spring. Habitat, week of sampling, and geologic range best predicted tick abundance based on multiple linear regression analysis.
|Commitee:||Bruggink, John, Rebertus, Alan|
|School:||Northern Michigan University|
|School Location:||United States -- Michigan|
|Source:||MAI 50/03M, Masters Abstracts International|
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