The defensive secretion of Eurycotis floridana (Dictyoptera, Blattidae, Polyzosteriinae): Chemical identification and evidence of an alarm function - Archive ouverte HAL
Article Dans Une Revue Insect Biochemistry and Molecular Biology Année : 1997

The defensive secretion of Eurycotis floridana (Dictyoptera, Blattidae, Polyzosteriinae): Chemical identification and evidence of an alarm function

Résumé

The defensive secretion of the cockroach Eurycotis floridana was believed to contain only (E)-2-hexenal. However, we have shown it consists of 40 components, of which 30 were tentatively identified. (E)-2-Hexenal, (E)-2-hexenol and (E)-2-hexenoic acid represented approximately 98% of the organic phase. The other 2% included 10 aldehydes, 10 alcohols, four acids, two lactones and one ether. Four compounds are novel insect exudates: 3-ethoxyhexanal, 3-hydroxyhexanal, [(E)-1-pentenyl]-4-propyl-1,3-dioxane and 3-[(E)-2-hexenoxyl-hexanal. In addition to its well-known allomonal function, we have demonstrated that the defensive secretion also acts as an alarm pheromone.

Dates et versions

hal-00457895 , version 1 (18-02-2010)

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Jean-Pierre Farine, Claude Everaerts, Jean-Luc Le Quere, Etienne Semon, Robert Henry, et al.. The defensive secretion of Eurycotis floridana (Dictyoptera, Blattidae, Polyzosteriinae): Chemical identification and evidence of an alarm function. Insect Biochemistry and Molecular Biology, 1997, 27 (6), pp.577. ⟨10.1016/S0965-1748(97)00033-7⟩. ⟨hal-00457895⟩

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