Relationship between susceptibility to insecticides and fecundity across populations of cotton aphid (Homoptera: Aphididae)

Robert G. Hollingsworth, Bruce E. Tabashnik, Marshall W. Johnson, Russell H. Messing, Diane E. Ullman

Research output: Contribution to journalArticle

27 Scopus citations

Abstract

We measured the relationship between susceptibility to 4 insecticides and fecundity across 15 populations of cotton aphid, Aphis gossypii Glover, from Hawaii. Multiple regression showed that the relationship between the logarithm of LC50 and mean daily progeny production in the absence of insecticide exposure was negative for esfenvalerate (a pyrethroid), positive for methomyl (a carbamate), and not significant for endosulfan (an organochlorine) or oxydemeton-methyl (an organophosphate). The association between methomyl susceptibility and fecundity was not evident in a simple regression analysis, which suggests that major fitness costs of resistance to one insecticide can obscure relationships between fitness and resistance to other insecticides.

Original languageEnglish (US)
Pages (from-to)55-58
Number of pages4
JournalJournal of economic entomology
Volume90
Issue number1
DOIs
StatePublished - Feb 1997

Keywords

  • Aphis gossypii
  • Fecunditis
  • Fitness cost
  • Insecticide resistance

ASJC Scopus subject areas

  • Ecology
  • Insect Science

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