Publications by authors named "B E Hibbard"
The western corn rootworm (WCR), Diabrotica virgifera virgifera LeConte, has evolved resistance to nearly every management tactic utilized in the field. This study investigated the resistance mechanisms in a WCR strain resistant to the Bacillus thuringiensis (Bt) protein eCry3.1Ab using dsRNA to knockdown WCR midgut genes previously documented to be associated with the resistance.
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- Scientists use special diets to raise insects for research and education.
- They found that storing these diets at certain temperatures and for certain lengths of time really affects how good the diets are for the insects.
- The best temperatures for keeping the diets quality high were really cold ones like -20°C and 4°C, which helped the insects grow better over time.
Article Synopsis
- A universal diet formulation, WCRMO-2, supports the growth of southern, western, and northern corn rootworm species effectively, showing superior results compared to specialized diets.
- After 10 days, larvae on the WCRMO-2 diet demonstrated significant increases in weight and developmental milestones compared to other diets, especially for southern corn rootworm larvae.
- The adoption of this universal diet can streamline research efforts to study pest resistance and enhance pest control strategies.
The northern corn rootworm, Diabrotica barberi Smith & Lawrence (Coleoptera: Chrysomelidae) is a major pest of maize in the United States Corn Belt. Recently, resistance to Bacillus thuringiensis (Bt) maize was reported in North Dakota and increased use of Bt maize hybrids could facilitate resistance evolution in other maize-producing states. In this study, susceptibility to Bt proteins was evaluated in wild D.
View Article and Find Full Text PDFWestern, northern, Mexican, and southern corn rootworms (WCR, NCR, MCR, and SCR) are serious corn pests. We evaluated host search behavior of these pests on six plant species using a video tracking system. After a 5-min exposure to plant roots, behavioral parameters were automatically recorded and used to quantify the search behavior.
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