Journal
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
Volume 99, Issue 10, Pages 6822-6827Publisher
NATL ACAD SCIENCES
DOI: 10.1073/pnas.102165699
Keywords
chemical defense; predation; lepidoptera; formicidae
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Funding
- NIAID NIH HHS [AI02908, R01 AI002908] Funding Source: Medline
- NIGMS NIH HHS [GM 53850] Funding Source: Medline
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Larvae of the European cabbage butterfly, Pieris rapae (Pieridae), are beset with glandular hairs, bearing droplets of a clear oily secretion at their tip. The fluid consists primarily of a series of chemically labile, unsaturated lipids, the mayolenes, which are derived from 11-hydroxylinolenic acid. In bioassays with the ant Crematogaster lineolata, the secretion was shown to be potently deterrent, indicating that the fluid plays a defensive role in nature.
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