Realized heritability of resistance to dicrotophos in greenhouse whitefly

Amir D. Omer, Bruce E. Tabashnik, Marshall W. Johnson, Thomas F. Leigh

Research output: Contribution to journalArticlepeer-review

14 Scopus citations


Realized heritability (h2) of resistance to dicrotophos in greenhouse whitefly, Trialeurodes vaporariorum Westwood, was estimated from a laboratory selection experiment. Five generations of selection increased the LC50 approximately 13‐fold. Estimated h2 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 h2 of insecticide resistance in other insect pests, the mean was 0.29. The relatively high h2 of dicrotophos resistance for T. vaporariorum is consistent with rapid resistance development in field populations. 1993 The Netherlands Entomological Society

Original languageEnglish (US)
Pages (from-to)211-217
Number of pages7
JournalEntomologia Experimentalis et Applicata
Issue number3
StatePublished - Sep 1993


  • Aleyrodidae
  • Homoptera
  • Trialeurodes vaporariorum
  • insecticide resistance
  • organophosphate
  • selection

ASJC Scopus subject areas

  • Ecology, Evolution, Behavior and Systematics
  • Insect Science


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