Squash leaf glandular trichome volatiles: identification and influence on behavior of female pickleworm moth [Diaphania nitidalis (Stoll.)] (Lepidoptera: Pyralidae)

Fourteen volatile compounds occurring in leaf trichomes of yellow squash (Cucurbita pepo L. cv. Early Prolific Straightneck) were identified. These compounds accounted for 83.5% of the volatile matrix. Ubiquitous constituents of the epidermis (myristic, palmitic, and stearic acids, n-tricosane, and...

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Bibliographic Details
Published in:Journal of chemical ecology 1994-08, Vol.20 (8), p.2099-2109
Main Authors: Peterson, J.K. (USDA, ARS, US Vegetable Laboratory, Charleston, SC.), Horvat, R.J, Elsey, K.D
Format: Article
Language:English
Subjects:
Animal and plant ecology
Animal, plant and microbial ecology
Animals
ATRAYENTES
ATTRACTIF
Autoecology
Biological and medical sciences
COMPOSE VOLATIL
COMPOSICION QUIMICA
COMPOSITION CHIMIQUE
COMPUESTO VOLATIL
CONTROL DE INSECTOS
DIAPHANIA NITIDALIS
FEUILLE
Fundamental and applied biological sciences. Psychology
HOJAS
Invertebrates
LUTTE ANTIINSECTE
OVIPOSICION
PELOS VEGETALES
POIL VEGETAL
PONTE
Protozoa. Invertebrata
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Summary:Fourteen volatile compounds occurring in leaf trichomes of yellow squash (Cucurbita pepo L. cv. Early Prolific Straightneck) were identified. These compounds accounted for 83.5% of the volatile matrix. Ubiquitous constituents of the epidermis (myristic, palmitic, and stearic acids, n-tricosane, and n-pentacosane) accounted for 73.7%; these compounds were not bioassayed. The volatiles o-, m-, and p-xylene, toluene, 2-heptanone. (R)-(+)- and (S)-(-)-limonene, and germacrene D were tested for their influence on attraction and oviposition by the pickleworm moth (Diaphania nitidalis Stoll.). No single compound, except germacrene D, was attractive. (R)-(+)-Limonene and 2-heptanone were weakly repellent. Mixtures of the highly volatile fractions were as attractive as volatiles emanating from whole, intact leaves. Oviposition levels on treated artificial sites corresponded with levels of visitation. Oviposition was significantly stimulated by "whole-leaf" volatiles, and (S)-(-)-limonene caused a slight but significant reduction
ISSN:0098-0331
1573-1561
DOI:10.1007/bf02066246