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Science 21 August 1987:
Vol. 237. no. 4817, pp. 898 - 901
DOI: 10.1126/science.3616620
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Articles

Science, Vol 237, Issue 4817, 898-901
Copyright © 1987 by American Association for the Advancement of Science

articles

Vein-cutting behavior: insect counterploy to the latex defense of plants

DE Dussourd and T Eisner

Many mandibulate insects that feed on milkweeds, or other latex-producing plants, cut leaf veins before feeding distal to the cuts. Vein cutting blocks latex flow to intended feeding sites and can be viewed as an insect counteradaptation to the plant's defensive secretion. Experimental vein severance renders milkweed leaves edible to generalist herbivores that do not show vein-cutting behaviors and ordinarily ignore milkweeds in nature.




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Science. ISSN 0036-8075 (print), 1095-9203 (online)