W. Nigatu et al., TEST FOR ASSOCIATION OF DDT RESISTANCE WITH INVERSION POLYMORPHISM INANOPHELES ARABIENSIS FROM ETHIOPIA, Journal of the American Mosquito Control Association, 11(2), 1995, pp. 238-240
Association of DDT resistance levels with chromosome inversion polymor
phism was investigated in Anopheles arabiensis samples collected from
southwestern Ethiopia. The frequencies of the 2Ra, 2Rd, and 3Ra invers
ions in 1988 and 1990 between the DDT survivors pooled from the 3 time
s of exposure and unexposed controls did not differ significantly. How
ever, for 2Rb a significant association was observed (Mantel-Haenszel
chi(2), stratified for year of collection = 10.4, P < 0.001). The inve
rsion frequency was 56% among unexposed individuals, but it was 64-92%
among those surviving exposure.