« Previous AbstractHow contact foraging experiences affect preferences for host-related odors in the larval parasitoidCotesia marginiventris (Cresson) (Hymenoptera: Braconidae)    Next AbstractAn elicitor in caterpillar oral secretions that induces corn seedlings to emit chemical signals attractive to parasitic wasps »

J Chem Ecol

Title:		"Isolation and identification of allelochemicals that attract the larval parasitoid,Cotesia marginiventris (Cresson), to the microhabitat of one of its hosts"
Author(s):		Turlings TC; Tumlinson JH; Heath RR; Proveaux AT; Doolittle RE;
Address:		"U.S. Department of Agriculture, Insect Attractants, Behavior, and Basic Biology Research Laboratory, Agricultural Research Service, 32604, Gainesville, Florida"
Journal Title:		J Chem Ecol
Year:		1991
Volume:		17
Issue:		11
Page Number:		2235 - 2251
DOI:		10.1007/BF00988004
ISSN/ISBN:		0098-0331 (Print) 0098-0331 (Linking)
Abstract:		"Volatiles released from corn seedlings on which beet armyworm larvae were feeding were attractive to females of the parasitoid,Cotesia marginiventris (Cresson), in flight tunnel bioassays. Analyses of the collected volatiles revealed the consistent presence of 11 compounds in significant amounts. They were: (Z)-3-hexenal, (E)-2-hexenal, (Z)-3-hexen-1-ol, (Z)- 3-hexen-1-yl acetate, linalool, (3E)-4,8-dimethyl-1,3,7-nonatriene, indole, alpha-trans-bergamotene, (E)-beta-farnesene, (E)-nerolidol, and (3E,7E)-4,8,12-trimethyl-1, 3,7,ll-tridecatetraene. A synthetic blend of all 11 compounds was slightly less attractive to parasitoid females than an equivalent natural blend. However, preflight experience with the synthetic blend instead of experience with a regular plant-host complex significantly improved the response to the synthetic blend. Our results suggest thatC. marginiventris females, in their search for hosts, use a blend of airborne semiochemicals emitted by plants on which their hosts feed. The response to a particular odor blend dramatically increases after a parasitoid experiences it in association with contacting host by-products"
Keywords:
Notes:		"PubMed-not-MEDLINETurlings, T C Tumlinson, J H Heath, R R Proveaux, A T Doolittle, R E eng 1991/11/01 J Chem Ecol. 1991 Nov; 17(11):2235-51. doi: 10.1007/BF00988004"