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Dispersal Of Boll Weevils (Coleoptera: Curculionidae) From Cotton Modules Before Ginning, Thomas W. Sappington, Mark D. Arnold, Alan D. Brashears, Megha N. Parajulee, Stanley C. Carroll, Allen E. Knutson, John W. Norman Jr.
Dispersal Of Boll Weevils (Coleoptera: Curculionidae) From Cotton Modules Before Ginning, Thomas W. Sappington, Mark D. Arnold, Alan D. Brashears, Megha N. Parajulee, Stanley C. Carroll, Allen E. Knutson, John W. Norman Jr.
United States Department of Agriculture-Agricultural Research Service / University of Nebraska-Lincoln: Faculty Publications
We characterized the level of risk of boll weevil, Anthonomus grandis grandis Boheman, reintroduction to an eradication zone posed by dispersal from cotton modules during and after transport to the gin. Mark-release-recapture experiments in August and September in Texas indicated that most weevils disperse rapidly from the module surface, temperature permitting, unless confined under a module tarp, where most died. Nevertheless, 1-5% of released weevils were recovered alive after 24 h on the side and top surfaces of modules, representing potential dispersants. Mortality of boll weevils caged on the top surface of a module was 95-100% after 1-4 d when …
Dispersal Of Newly Eclosed European Corn Borer Adults (Lepidoptera: Crambidae) From Corn Into Small-Grain Aggregation Plots, Brendon J. Reardon, Douglas V. Sumerford, Thomas W. Sappington
Dispersal Of Newly Eclosed European Corn Borer Adults (Lepidoptera: Crambidae) From Corn Into Small-Grain Aggregation Plots, Brendon J. Reardon, Douglas V. Sumerford, Thomas W. Sappington
United States Department of Agriculture-Agricultural Research Service / University of Nebraska-Lincoln: Faculty Publications
Genetically modified, insecticidal Bacillus thuringiensis (Bt) corn, Zea mays L., hybrids are used throughout the Corn Belt for European corn borer, Ostrinia nubilalis(Hübner) (Lepidoptera: Crambidae), control. To slow development of Bt corn resistance, the Environmental Protection Agency requires growers to plant a refuge. Determining the appropriate distance between a refuge and Bt corn, and development of mitigation-remediation strategies such as mass releases of susceptible moths, requires an understanding of adult dispersal and mating behavior. However, much remains unknown about these behaviors. Because mating often occurs in grass near cornfields where adult O. nubilalis aggregate, we planted small-grain plots as …