Jf. Carroll et Et. Schmidtmann, SILT FENCING AS A BARRIER TO THE DISPERSAL OF IXODES-SCAPULARIS (ACARI, IXODIDAE) INTO PASTURES, Journal of medical entomology, 33(6), 1996, pp. 921-925
Silt fence barriers were set along pasture fencelines and evaluated as
a method of restricting the dispersal of blacklegged tick, Ixodes sca
pularis Say, adults and nymphs from woodlands into adjacent horse past
ures. The barriers received no acaricidal treatment for the Ist cohort
of adults. Thereafter the woods side of the barriers was sprayed with
cyfluthrin at the onset of each season of host seeking activity of ny
mphs and adults. When high densities of adults were present, the barri
ers significantly limited the numbers of ticks in pastures. Nymphs, ho
wever, were not significantly fewer in numbers in pasture areas associ
ated with the barriers compared with control areas. Marked adult ticks
released in woodlands and ecotones were recaptured on mowed verges an
d pastures, but there was little dispersal from the woods edge into th
e woods.