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Patterns of Flight Behavior and Capacity of Unmated Navel Orangeworm (Lepidoptera: Pyralidae) Adults Related to Age, Gender, and Wing Size
Environmental Entomology
  • Thomas W. Sappington, Iowa State University
  • Charles S. Burks, United States Department of Agriculture
Document Type
Article
Publication Date
6-1-2014
DOI
10.1603/EN13279
Abstract

The navel orangeworm, Amyelois transitella (Walker) (Lepidoptera: Pyralidae), is a key pest of almond, pistachio, and walnut tree crops in California. Understanding dispersal of adults between orchards is important to improving management options. Laboratory flight behavior of unmated navel orangeworm of ages 1, 2, 3, 5, and 7 d posteclosion was examined using flight mills. As a group, females flew farther and longer than males, but the differences were not statistically significant. Flight speed did not differ between sexes. Flight duration and distance did not differ with age, except that 7-d-old adults performed worse for these parameters than did 1- and 2-d-old adults. Females began their flights ≈1.5 h after the onset of dusk, and ≈1.5 h earlier in the night than males. Flight capacity and propensity were substantial for both sexes and all age classes tested. At least 20% of adults (except 7-d-old males) made a continuous flight ≥5.5 h, and median total distances flown during the 10.5-h night ranged from 7 to 15 km depending on age class. Thus navel orangeworm flight mill performance was greater than that of most pests tested from the families Pyralidae and Tortricidae. Surface area and length of forewings and hindwings were greater in females than males, but had little effect on flight performance. The results are generally consistent with field observations of navel orangeworm dispersal, but it will be important to characterize the effects of mating on flight, and flight on fecundity.

Comments

This article is from Environmental Entomology 43 (2014): 696, doi:10.1603/EN13279

Rights
Works produced by employees of the U.S. Government as part of their official duties are not copyrighted within the U.S. The content of this document is not copyrighted.
Language
en
Date Available
2014-10-01
File Format
application/pdf
Citation Information
Thomas W. Sappington and Charles S. Burks. "Patterns of Flight Behavior and Capacity of Unmated Navel Orangeworm (Lepidoptera: Pyralidae) Adults Related to Age, Gender, and Wing Size" Environmental Entomology Vol. 43 Iss. 3 (2014) p. 696 - 705
Available at: http://works.bepress.com/thomas_sappington/69/