Comparison of the Volatile Components Released By Calling Males Of Ceratitis capitata (Diptera: Tephritidae) with Those Extractable from the Salivary Glands

Glucia B. Gonalves, Carlos E. Silva, Jeinny C. G. Dos Santos, Eunice S. Dos Santos, Ruth R. Do Nascimento, Edleide Leite Da Silva, Adriana De Lima Mendonca, Maria Do Rosario Tenorio De Freitas, Antonio E. G. Sant'Ana


The volatile compounds released by calling males of Ceratitis capitata and those that were extracted from the salivary glands with n-hexane were analyzed by gas chromatography-mass spectrometry. Twelve of the 24 compounds identified in the released volatiles, namely, 2-heptanone, 2,5-dimethylpyrazine, 3-octanone, ethyl hexanoate, methyl heptanoate, 2-ethyl-1-hexanol, limonene, indene, ethyl heptanoate, methyl octanoate, a-trans-bergamotene and (E,E)-a-farnesene, also were detected in the glandular extract. The similarities found in the chemical profiles of the released volatiles and of the salivary gland suggest that the latter is the storage site, and also perhaps the site of synthesis, of some of the pheromone components in this species of fruit fly.

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