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FEEDING BEHAVIOUR OF THE PALES WEEVIL, HYLOBIUS PALES (COLEOPTERA: CURCULIONIDAE): I. SYNERGISTIC EFFECTS WITH LOBLOLLY PINE PHLOEM EXTRACTS

Published online by Cambridge University Press:  31 May 2012

H. A. Thomas  and
J. D. White
H. A. Thomas
Affiliation:
Southeastern Forest Experiment Station, U.S.D.A. Forest Service, Forestry Sciences Laboratory, Research Triangle Park, North Carolina
J. D. White
Affiliation:
Southeastern Forest Experiment Station, U.S.D.A. Forest Service, Forestry Sciences Laboratory, Research Triangle Park, North Carolina
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Abstract

A bioassay with elder pith wafers was developed to measure sustained feeding of the pales weevil, Hylobius pales (Herbst). Sucrose, fructose, glucose, and extracts of phloem of loblolly pine (Pinus taeda L.) were compared in three-choice experiments. Intensity of feeding indicated a synergistic effect occurred when sucrose and phloem lipid were present together. The non-polar or neutral lipid fraction of phloem stimulated more feeding than did the polar lipid fraction.

Type
Articles
Information
The Canadian Entomologist , Volume 103 , Issue 1 , January 1971 , pp. 74 - 79
Copyright
Copyright © Entomological Society of Canada 1971

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