DIVERSITY OF ACARINA AND PREDICTION OF DISTRIBUTION USING A GEOGRAPHIC INFORMATION SYSTEM

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DIVERSITY OF ACARINA AND PREDICTION OF
DISTRIBUTION USING A GEOGRAPHIC INFORMATION
SYSTEM   T. M. Kollars1, Jr., K. Neidhardt2 and
B. C. Zeichner1 1. Entomological Sciences
Program, U.S. Army Center for Health Promotion
and Preventive Medicine, E5700, Aberdeeen Proving
Ground, MD. 2. Entomological Sciences Division,
U.S. Army Center for Health Promotion and
Preventive Medicine - North, Bld. 4411, Fort
George G. Meade, MD, 20755
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INTRODUCTION

• A preliminary survey TYAD, Pennsylvania was
  conducted from 7-10 October, 2003 to identify the
  distribution of Ixodes scapularis, chiggers and
  acarine diversity.
• The distribution of acarines was identified and
  predictive models based on soil type were
  developed using GIS.

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MATERIALS AND METHODS

• Two methods of collecting arthropods were used
• Thirty-six 100m drags - 1m2 cloth
• drags were conducted on 12 of 17 soil types
  representing 91 of the soil area
• The Biter Fighter uses chemical attractants and
  a glue board
• placed on 3 soil types
• Menhinicks Index was used for measurement of
  acarine abundance

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RESULTS

• 40 individuals from 8 groups
• Collohmania spp., Ixodidae, Johnstonianidae,
  Oribatululoidea, Tetranychidae, Trombellidae,
  Trombiculidae, Trombidiidae
• Chippewa and Norwich extremely stony soils 0-8
  slopes (CNB) had a significantly higher mean MI
  (mean1.3, sd0.19) than the MI of
  Oquaga-Lackawanna channery loams 0-8 slopes
  (OXB) (mean0.50, sd0.71).
• The mean MI of Morris extremely stony silt loam
  0-8 slopes (MOB) (mean1.0, sd0.26) was not
  significantly different than either CNB or OXB).
  

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Results (cont)

• The lowest diversity of mites was found in
  Eastern white pine, red pine, European larch,
  Norway spruce with channery loam soil with
  moderate slopes.
• Chiggers (Trombiculidae) were found CNB and MOB
  soil types.
• One male and one female I. scapularis were
  collected on consecutive days from one site by
  drag on CNB.

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