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Chemical defense in the cave-dwelling millipede Brachydesmus troglobius Daday, 1889 (Diplopoda, Polydesmidae)

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Author(s): Makarov Slobodan E. | Vujisić Ljubodrag V. | Ćurčić Božidar P. M. | Ilić Bojan S. | Tešević Vele V. | Vajs Vlatka E. | Vučković Ivan M. | Mitić Bojan M. | Lučić Luka R. | Đorđević Iris Ž.

Journal: International Journal of Speleology
ISSN 0392-6672

Volume: 41;
Issue: 1;
Start page: 95;
Date: 2012;
Original page

Keywords: Diplopoda | Brachydesmus | troglobitic | chemical defense | HCN

ABSTRACT
The troglomorphic millipede Brachydesmus troglobius Daday, 1889 (Polydesmida: Polydesmidae) secretes allomones from glands on both lateral surfaces of its body segments. The secretion was identified by gas chromatography-mass spectrometry (GC-MS) analysis with electron and chemical ionization, and was shown to be composed of a mixture of benzaldehyde, benzyl alcohol, benzoylnitrile, benzoic acid and mandelonitrile benzoate. Hydrogen cyanide was qualitatively identified by the picric acid test. This is the first identification of these compounds in a cave-dwelling polydesmid.
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