6533b85bfe1ef96bd12bb2aa
RESEARCH PRODUCT
Defensive secretions of nymphs and adults of five species of Pyrrhocoridae (Insecta: Heteroptera)
Claude EveraertsJean-pierre FarineJean-luc Le QuéréRémy Brossutsubject
food.ingredientbiologyPyrrhocoridaeHeteropteraPyrrhocorisDysdercusbiology.organism_classificationBiochemistryDysdercus cingulatusSexual dimorphismfoodSex pheromoneBotanyNymphEcology Evolution Behavior and Systematicsdescription
Abstract The chemical composition of the defensive secretions of the nymphs and the adults of Dysdercus fasciatus was investigated. Thirty compounds were identified from the nymphal posterior dorsoabdominal glands, and 34 from the adult metathoracic glands of both sexes. The data were compared with those reported for other species of Pyrrhocoridae. For the species Dysdercus cingulatus, D. fasciatus , and Pyrrhocoris apertus , 63 identified compounds can be divided into 11 chemical groups: aldehydes, saturated hydrocarbons, acetates, alcohols, terpenes, lactones, ketones, esters, alkenes, acids and miscellaneous compounds. These data and those from the literature on Dysdercus intermedius and Dysdercus supersitiosus were analysed by an Euclidian distance clustering which emphasized the differences between nymphal and adult secretions. D. fasciatus is the only species which displays a sexual dimorphism in the composition of the secretion of the metathoracic glands.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 1993-04-01 | Biochemical Systematics and Ecology |