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Compounds in metathoracic glands of adults of the sunn pest, Eurygaster integriceps Puton Heteroptera Scutelleridae



Compounds in metathoracic glands of adults of the sunn pest, Eurygaster integriceps Puton Heteroptera Scutelleridae



Munis Entomology & Zoology 5(1): 232-239



Sunn Pest, Eurygaster integriceps (Puton) (Heteroptera: Scutelleridae) is a serious pest of wheat and barley in countries of west and central Asia. The contents of metathoracic glands (MTG) of adults of the sunn pest E. integriceps were tested by two methods in vitro and in vivo. Volatiles were collected by solid-phase microextraction (SPME) fibers. Chemical composition of the glandular secretion was identified by gas chromatography (GC), coupled GC-mass spectrometry, matching retention times and mass spectra with those of authentic samples. No sexual dimorphism exists in the glandular composition in this species. A total Of 7 compounds (E)-2-Hexenal, 2(5H)-Furanone, 5-Ethyle, 2-Hexen-1-ol, acetate, Limonene, 5-Decyne, Tridecane and Nonadecane were identified. Among the identified compounds (E)-2-Hexenal and Tridecane comprised nearly 95% of the total secretion in both females and males. In the MTG of both females and males of E. integriceps, (E)-2-Hexenal was determined in maximum amount and 2(5H)-Furanone,5-Ethyle was determined in minimum amount. Comparing results of in vitro and in vivo SPME sampling methods indicates that in-vivo method had high quality for detecting compounds than in vitro method. Quantity and area under GC peaks increased in in vivo method.

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Accession: 037405414

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