Fall Armyworm (Lepidoptera: Noctuidae) Feeding Responses on Corn Foliage and Foliage/Artificial Diet Medium Mixtures at Different Temperatures1

Publisher Website
Google Scholar
Abstract
Developmental time, fresh weight, and leaf consumption were determined for larvae of the fall armyworm (FAW), Spodoptera frugiperda (J. E. Smith), fed four corn genotypes at three different temperature regimes. Temperature and corn genotype had significant (P P < 0.05) greater for the FAW larvae fed the susceptible genotype ‘Cacahuacintle X’s’ than for those larvae fed the resistant genotype ‘MpSWCB-4.’ Developmental time and weight were determined for FAW larvae fed corn foliage/diet medium mixtures at three different temperatures. No differences in weight of FAW larvae fed excised leaves of susceptible and resistant genotypes were detected at 25°C but differences were found between genotypes at 30°C and the fluctuating temperature regime of 31/20°C. This variation, between temperatures, did not occur when comparisons were made between susceptible and resistant genotypes using the foliage/diet medium mixture technique.