Lack of fitness costs associated with pyriproxyfen resistance in the B biotype of Bemisia tabaci

David W. Crowder, Christa Ellers-Kirk, Bruce E Tabashnik, Yves Carriere

Research output: Contribution to journalArticle

16 Citations (Scopus)

Abstract

BACKGROUND: The insect growth regulator pyriproxyfen has provide deffective control of the whitefly Bemisiatabaci Gennadius in many countries. Here, whether or not fitness costs were associated with pyriproxyfen resistance in a laboratory-selected resistant strain (QC02-R) of the B biotype was determined. RESULTS: Mortality caused by pyriproxyfen and fitness traits over time were measured in unselected and selected hybrid strains, which were created by crossing individuals of the resistant strain with individuals of a susceptible strain. Fitness costs were not associated with resistance in QC02-R, as mortality caused by pyriproxyfen did not increase over time in unselected hybrid strains and fitness traitswere similar in unselected and selected hybrid strains. Using a new method to examine the inheritance of resistance, based on data from fitness cost experiments, it was estimated that pyriproxyfen resistance is controlled by two loci in the QC02-R strain. CONCLUSION: The lack of fitness costs associated with pyriproxyfen resistance could promote the evolution of resistance in field populations with similar traits to QC02-R.

Original languageEnglish (US)
Pages (from-to)235-240
Number of pages6
JournalPest Management Science
Volume65
Issue number3
DOIs
StatePublished - Mar 2009

Fingerprint

pyriproxyfen
Bemisia argentifolii
insect growth regulators
Aleyrodidae
biotypes
inheritance (genetics)
loci

Keywords

  • Bemisia tabaci
  • Biotype
  • Fitness cost
  • Insecticide resistance
  • Number of loci
  • Pyriproxyfen

ASJC Scopus subject areas

  • Agronomy and Crop Science
  • Insect Science

Cite this

Lack of fitness costs associated with pyriproxyfen resistance in the B biotype of Bemisia tabaci. / Crowder, David W.; Ellers-Kirk, Christa; Tabashnik, Bruce E; Carriere, Yves.

In: Pest Management Science, Vol. 65, No. 3, 03.2009, p. 235-240.

Research output: Contribution to journalArticle

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