Skip to main content
ARS Home » Southeast Area » Gainesville, Florida » Center for Medical, Agricultural and Veterinary Entomology » Insect Behavior and Biocontrol Research » Research » Publications at this Location » Publication #355432

Research Project: Improved Biologically-Based Methods for Insect Pest Management of Crop Insect Pests

Location: Insect Behavior and Biocontrol Research

Title: Monitoring acoustic behavior and mortality of Sitophilus oryzae L.(Coleoptera: Curculionidae)and Callosobruchus maculatus (F.)Coleoptera: Chrysomelidae: Bruchinae)under oxygen deprivation

Author
item Njoroge, Anastasia - Purdue University
item Baribatsu, Dieudonne - Purdue University
item Mankin, Richard

Submitted to: Meeting Abstract
Publication Type: Abstract Only
Publication Acceptance Date: 6/5/2018
Publication Date: N/A
Citation: N/A

Interpretive Summary:

Technical Abstract: Acoustic methods were employed to assess the effect of hermetic environments and controlled atmospheres on the behavior and mortality of Sitophilus oryzae and Callosobruchus maculatus. Six treatments of 25, 50 and 100 insects were sealed hermetically in 500- and 1000- ml glass jars for 28 days. Data on S. oryzae showed that their acoustic activity decreased to <0.02 bursts/s within 3–14 d depending on initial infestation levels, as oxygen fell below 5% and mortality was observed at 2% oxygen level. Data on C. maculatus showed that their acoustic activity decreased to <0.02 bursts/s within 3-11 d depending on initial infestation levels when oxygen levels declined to below 5% and mortality was observed at 4%. Linear regression showed statistically significant relationships between the acoustic activity and the residual oxygen level for both species. An equation was made to estimate the time needed for oxygen to decline to levels that limit insect damage.