Volatile compounds released by disturbed and undisturbed adults of Anchomenus dorsalis (Coleoptera, Carabidae, Platynini) and structure of the pygidial gland

Salvatore Guarino, Ezio Peri, Stefano Colazza, Tullia Zetto, Teresa Bonacci, Pietro Brandmayr, Ida Daniela Perrotta

Research output: Contribution to journalArticlepeer-review

13 Citations (Scopus)

Abstract

Volatile compounds produced by adults of Anchomenus dorsalis under undisturbed and disturbed conditions were investigated with an all-glass aeration apparatus. GC-MS analysis of the crude extracts from undisturbed and disturbed adults highlighted four major volatile compounds, undecane, heneicosane, Z-9 tricosene and tricosane, of which signifi cantly more undecane was released by disturbed adults compared to undisturbed beetles. Th e pygidial glands of adults of A. dorsalis were investigated using light and Transmission Electron Microscopy (TEM). Each gland showed dense aggregates of secretory cells organized into visually distinct lobes; a long collecting canal that drains the secretion towards the reservoir, a bean-shaped double lobed muscular reservoir in which secretion is stored and a short duct (eff erent duct) through which the secretion is discharged. Th e function of the pygidial glands and the possible role played by undecane as a defensive allomone and/or chemical signalling molecule are discussed.
Original languageEnglish
Pages (from-to)13-25
Number of pages13
JournalZooKeys
Volume81
Publication statusPublished - 2011

All Science Journal Classification (ASJC) codes

  • Ecology, Evolution, Behavior and Systematics
  • Animal Science and Zoology

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