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Realized heritability of resistance to dicrotophos in greenhouse whitefly
Author(s) -
Omer Amir D.,
Tabashnik Bruce E.,
Johnson Marshall W.,
Leigh Thomas F.
Publication year - 1993
Publication title -
entomologia experimentalis et applicata
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.765
H-Index - 83
eISSN - 1570-7458
pISSN - 0013-8703
DOI - 10.1111/j.1570-7458.1993.tb01706.x
Subject(s) - trialeurodes , greenhouse whitefly , biology , heritability , insecticide resistance , resistance (ecology) , pest analysis , homoptera , toxicology , botany , ecology , genetics
Realized heritability ( h 2 ) of resistance to dicrotophos in greenhouse whitefly, Trialeurodes vaporariorum Westwood, was estimated from a laboratory selection experiment. Five generations of selection increased the LC 50 approximately 13‐fold. Estimated h 2 of resistance to dicrotophos was 0.40 when calculated with the method of Tabashnik (1992) and 0.35 with the method of Tanaka & Noppun (1989). These results suggest that 35 to 40% of the total phenotypic variation in resistance was caused by additive genetic variation. For thirteen previously reported estimates of h 2 of insecticide resistance in other insect pests, the mean was 0.29. The relatively high h 2 of dicrotophos resistance for T. vaporariorum is consistent with rapid resistance development in field populations.