Extraction of Feeding Stimulants from Slash Pine Cones for Larvae of Dioryctria Abietella (Lepidoptera: Pyralidae: Phyctinae)
Abstract
Feeding by larvae of Dioryctria abietella (Denis & Schiffermuller) was stimulated by acetone extracts from conelets of slash pine, Pinus elliottii Engelmann var. elliottii. Ether-soluble and water-soluble fractions of the acetone extract elicited a continuous feeding response only when recombined. Larval feeding was also induced by 0.1 M solutions of sugars applied to the test substrate. The efficacies of sucrose, fructose, raffinose, and glucose as larval feeding stimulants were increased by addition of the ether-soluble fraction of the acetone extract. Maximum larval feeding, however, occurred in response to a combination of all 4 sugars plus the ether-soluble fraction.Downloads
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