Abstract
In this study, volatile compounds emitted by disturbed nymphs and adults of the stink bug Antiteuchus innocens were identified by gas chromatography-mass spectrometry as follows: (E)-hexenal, α-pinene, (E)-2-heptenal, n-decane, (E)-2-octenal, n-undecane, n-dodecane, and n-tridecane. The major components were (E)-2-hexenal, (E)-2-heptenal, and n-undecane. The same compounds, except α-pinene and (E)-2-octenal, were found in the dorsal glands and metathoracic glands of nymphs and adults, respectively. Extracts of exocrine glands did not elicit antennal responses of the adults, or affect the behavior of fifth instar nymphs, which suggests that these compounds are likely involved in the A. innocens defense rather than functioning as an alarm pheromone. Sumario En este estudio, los compuestos volatiles emitidos por las ninfas y adultos molestados de la chinche apestosa Antiteuchus innocens fueron identificados por cromatografia de gases-espectrometria de masas como (E)-hexenal, α-pineno, (E)-2-heptenal, n-decano, (E)-2-octenal, n-undecano, n-dodecano, and n-tridecano. Los compuestos mayoritarios de la mezcla fueron el (E)-2-hexenal, (E)-2-heptenal, and n-undecano. Los mismos compuestos, excepto el α-pineno and (E)-2-octenal, fueron encontrados en las glandulas dorsales y metatoracicas de ninfas y adultos, respectivamente. Extractos de las glandulas exocrinas no evocaron una respuesta antenal de adultos, ni afectaron el comportamiento de ninfas de quinto instar, lo que sugiere que estos compuestos estan probablemente involucrados en funciones de defensas mas que como una feromona de alarma. Key Words: Pentatomidae; Discocephalinae; metathoracic glands; dorsal glands; volatiles View this article in BioOne https://doi.org/10.1653/024.102.0223
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