Journal of Economic Entomology (1997) 90, 55-58

Robert G. Hollingsworth, Bruce E. Tabashnik, Marshall W. Johnson, Russell H. Messing and Diane E. Ullman (1997)
Relationship between susceptibility to insecticides and fecundity across populations of cotton aphid (Homoptera: Aphididae)
Journal of Economic Entomology 90 (1), 55-58
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.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
Database assignments for author(s): Robert G. Hollingsworth, Bruce E. Tabashnik, Marshall W. Johnson

Research topic(s) for pests/diseases/weeds:
pesticide resistance of pest

---

Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Aphis gossypii		U.S.A. (Hawaii)