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ANATOMICAL BASIS FOR CONELET ABORTION ON PINUS ECHINATA FOLLOWING FEEDING BY LEPTOGLOSSUS CORCULUS (HEMIPTERA: COREIDAE)

Published online by Cambridge University Press:  31 May 2012

Gary L. DeBarr  and
Paul P. Kormanik
Gary L. DeBarr
Affiliation:
Forestry Sciences Laboratory, Southeastern Forest Experiment Station, USDA Forest Service, Athens, Georgia
Paul P. Kormanik
Affiliation:
Forestry Sciences Laboratory, Southeastern Forest Experiment Station, USDA Forest Service, Athens, Georgia
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Abstract

Second-instar nymphs of Leptoglossus corculus (Say) confined to shortleaf pine conelets for only 4 days caused 100% conelet abortion. The bugs fed almost exlusively on the cytoplasm of cells of the nucellar tissue. Feeding in May produced an abscission zone in only a few days and resulted in conelet abscission in less than 2 weeks. Similar ovule destruction, followed by conelet abortion, occurred in late summer after being fed upon by the same instar, but conelet abscission was prevented because of a greater proportion of tracheary elements in the conelet stalks.

Type
Articles
Information
The Canadian Entomologist , Volume 107 , Issue 1 , January 1975 , pp. 81 - 86
Copyright
Copyright © Entomological Society of Canada 1975

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