author(s)
Hasan Hadi Faraj

abstract
The volatiles compounds emission by Ceratitis capitata adults and those that were extracted from male and female adults and analyzed by the gas chromatography-mass spectrometer. Gas Chromatography (GC) technique coupled with flame ionization detection (FID), and gas with mass spectrometry (GC-MS) were used for identification VOC’s. Head Space-Solid Phase Micro Extraction HS-SPME method with Three-phase fiber 50/30 µm divinylbenzene/carboxen/ polydimethylsiloxane (DVB/CAR/PDMS) was used for VOC’s extraction. Twenty nine compounds identified in the emission volatiles, acetoin, toluene, 2,3-hexanedione, hexaldehyde, o-dimethylbenzene, nonane, butanoic acid,4-hydroxy, 2,3,4-trithiapentane, octane, 2,7-dimethyl-, octanal, 4-Methyl-5-hexen-4-olide, acetophenone, 3,3-dimethylstyrene, cosmene, 2,4,6-octatriene,2,6-dimethyl-(E,Z)-, undecane, 2,6-dimethyl-, 1h-Pyrrole-2-carboxylic acid, tridecane, 2,6,10-trimethyltridecane, dimethyl phthalate, cuparene, farnesene, (e)-y-bisabolene, undecane,5-phenyl-, tetradecanoic acid, carboric acid, 2-ethylhexyl octyl ester, n-hexadecanoic acid, 2(3h)-furanone, 5-dodecyldihydro- and octadecanoic acid The results indicated that there were different chemicals emitted from male and female of Medfly. Thus, the VOC’s technique could provide a possible tool for understanding the insect response and understand chemical communications between insect-insect interactions in adult stages of Medfly.