Fecundity of sugarcane borer (Lepidoptera: Pyralidae), as affected by larval development on gramineous host plants

R. T. Bessin, T. E. Reagan

Research output: Contribution to journalArticlepeer-review

37 Scopus citations

Abstract

During a 2-yr study investigating the fecundity of the sugarcane borer, Diatraea saccharalis (F.), 607 pupae were collected on four gramineous hosts. Weight, length, and diameter of sugarcane borer pupae collected on corn, Zea mays L. Cv. Merrit, and a sugarcane borer-susceptible sugarcane (a complex hybrid of Saccharum spp.) variety, CP 61-37, were greater (P < 0.05) than those of pupae collected on johnsongrass, Sorghum halapense (L.) Persoon. Female pupae collected on a moderately resistant sugarcane variety, CP 65-357, weighed significantly less (P < 0.05) and were shorter than those collected on CP 61-37 or corn. The sex ratio of sugarcane borer was independent of host plant. The best model for predicting sugarcane borer fecundity was that of a linear regression on pupal weight, with fecundity increasing at 4.3 eggs for each milligram increase in pupal weight, regardless of host or year from which the pupae were collected. Fecundity of moths collected from corn and the susceptible sugarcane variety was greater (P < 0.05) than that of moths collected from johnsongrass or the moderately resistant sugarcane variety. The potential finite daily rate of increase of sugarcane borer populations was determined to be 1.132 on corn and CP 61-37, 1.128 on CP 65-357, and 1.119 on johnsongrass.

Original languageEnglish
Pages (from-to)635-639
Number of pages5
JournalEnvironmental Entomology
Volume19
Issue number6
DOIs
StatePublished - Dec 1 1990

Keywords

  • Biometrics
  • Diatraea saccharalis
  • Fecundity
  • Insecta

ASJC Scopus subject areas

  • Ecology, Evolution, Behavior and Systematics
  • Ecology
  • Insect Science

Fingerprint

Dive into the research topics of 'Fecundity of sugarcane borer (Lepidoptera: Pyralidae), as affected by larval development on gramineous host plants'. Together they form a unique fingerprint.

Cite this