Instar-specific defensive secretions of stink bugs (Heteroptera: Pentatomidae) |
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Authors: | M Borges J R Aldrich |
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Institution: | (1) EMBRAPA/CEN ARGEN, Centro Nacional de Pesquisa de Recursos Geneticos e Biotecnologia, CEP 70 770 Brasilia, DF, Brazil;(2) Insect Chemical Ecology Laboratory, Agricultural Research Center-East, USDA-ARS, B-467 Beltsville, Maryland 20705, USA |
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Abstract: | Defensive secretions (allomones) from first-instar nymphs of stink bugs in the subfamily Pentatominae contain (E)-4-oxo-2-decenal as a major constituent, whereas this compound is absent from later instars. In contrast, first instars ofEdessa meditabunda (Edessinae) produce allomones like those of later instars. The C6 and C8 (E)-4-oxo-2-alkenals are common, characteristic exocrine compounds of nymphal and adult Heteroptera, but (E)-4-oxo-2-decenal is previously unknown as a major natural product for which a biological role has yet to be established. |
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Keywords: | Allomone semiochemical aggregation Nezara Euschistus Acrosternum Thyanta Edessa Hemiptera |
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