Document Type
Peer-Review Article
Abstract
Larvae of 21 field collected populations of the Indianmeal moth, Plodia interpunctella, infesting stored shelled corn in southern Minnesota were tested for their susceptibility to malathion in the laboratory. A population that was a composite of the 21 populations and a malathion susceptible population were also tested for their susceptibility to malathion, pirimiphos-methyl and chlorpyrifos-methyl. Comparison of the LDso values of the field populations with the malathion susceptible population indicated that the field populations were ca. 33- to 625-fold resistant to malathion. The composite field population was ca. 243-fold resistant to malathion, and this population was 3.2-fold cross-resistant to pirimiphos-methyl, but was highly susceptible to chlorpyrifos-methyl.
Recommended Citation
Sumner, W. A. II; Harein, P. K.; and Subramanyam, Bh.
1988.
"Malathion Resistance in Larvae of Some Southern Minnesota Populations of the Indianmeal Moth, Plodia Interpunctella (Lepidoptera: Pyralidae), Infesting Bulk-Stored Shelled Corn,"
The Great Lakes Entomologist, vol 21
(3)
DOI: https://doi.org/10.22543/0090-0222.1649
Available at:
https://scholar.valpo.edu/tgle/vol21/iss3/9