Ecological Requirements of Chigger Mites.
Abstract
Research progress is reported on (1) biotic associates of free-living stages of chigger mites, (2) extraction efficiencies for different methods, (3) food preferences of adult Eutrombicula, and (4) vertebrate host associations for the chigger fauna. Adult Eutrombicula densities were in the range of 1-10 per squared m, based on flotation of soil samples. Flotation in salt solutions or tap water yielded 90% recovery, but so did 5-day tullgren extractions. The latter are for less labor-intensive. Eutrombicula adults were offered eggs of eight different soil collembolan species. Adults showed a high preference for eggs of only three of the species. Vertebrate host association in Georgia were dominated by Eutrombicula species. Infestation rates were higher on the Coastal Plain than on the Piedmont, and higher for reptiles than for birds or mammals. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 31, 1982
- Accession Number
- ADA113695
Entities
People
- D. A. Crossley Jr.
Organizations
- University of Georgia