Title: RESPONSES OF THE MEDITERRANEAN FRUIT FLY, Ceratitis capitata, TO MALE-PRODUCED VOLATILES AND MANGO ODOR
Abstract: Department of Entomology, University of California, Riverside, California 92521 (Received March 17, 1995; accepted July 9, 1995) Abstract-We have identified five compounds from the headspace of calling male Mediterranean fruit flies (medfly), Ceratitis capitata (Wiedemann), and three compounds from the headspace of ripe mango (Mangifera indica L) using coupled gas chromatographic-electroantennographic (GC-EAG) record- ings, coupled gas chromatographic-mass spectrometric (GC-MS) analysis, and electroantennographic (EAG) assays of standards The male-produced volatiles eliciting responses from female antennae were ethyl-(E)-3-octenoate, geranyl acetate, (E,E)-a-farnesene, linalool, and indole An EAG dose- response test of linalool enantiomers and indole with female medfly antennae showed relatively strong BAG activities, but no significant difference between (R)-(-)-linalool and (5)-(+)-linalool The three mango volatiles were iden- tified as (1s)-(-)-(3-pinene, ethyl octanoate, and (3-caryophyllene In addition, a strong antenna1 response was recorded from a contaminant, a-copaene, present in a commercial sample of (3-caryophyllene The EAG response ampli- tudes from both male and female antennae to the above three mango volatiles were significantly greater than to a hexanol control. For both male and female medfly antennae, the greatest EAG responses were elicited by (3-caryophyllene followed by ethyl octanoate The mean EAG responses of female antennae to (3-caryophyllene and (IS)-(-)-(3-pinene were significantly greater than those of male antennae *TO whom correspondence should be addressed
Publication Year: 1995
Publication Date: 1995-01-01
Language: en
Type: article
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