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Science 16 June 1978:
Vol. 200. no. 4347, pp. 1296 - 1298
DOI: 10.1126/science.200.4347.1296
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Articles

Allylglucosinolate and Herbivorous Caterpillars: A Contrast in Toxicity and Tolerance

PATRICIA A. BLAU 1, PAUL FEENY 1, LORRAINE CONTARDO 1, and DOUGLAS S. ROBSON 2

1 Department of Entomology, Insectary, Cornell University, Ithaca, New York 14853
2 Department of Plant Breeding and Biometry, Cornell University

Allylglucosinolate, found in many cruciferous plants, is acutely toxic to Papilio polyxenes larvae, which do not normally attack crucifers. By contrast, larval growth of Pieris rapae, a crucifer specialist, is not affected even by artificially high concentrations of allylglucosinolate. Larval growth of Spodoptera eridania, a generalist feeder, is inhibited by high but not by low concentrations of the compound.

Submitted on December 22, 1977
Revised on March 6, 1978


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