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Endogenous free fatty acids repel and attract Collembola

Författare:
Publiceringsår: 2004
Språk: Engelska
Sidor: 1431-1443
Publikation/Tidskrift/Serie: Journal of Chemical Ecology
Volym: 30
Nummer: 7
Dokumenttyp: Artikel
Förlag: Springer Netherlands

Sammanfattning

We used video recording of the movement pattern of Protaphorura armata (Collembola) to test whether its avoidance of the odor of dead conspecifics extends to related species. P. armata was repelled by the odor of dead individuals of Onychiurus scotarius and Onychiurus circulans, but not by live individuals. Free palmitic, oleic, and linoleic acids were present in extracts of the three repellent species, but only free palmitic acid was detected in extracts of a fourth nonrepellent species, Folsomia candida. Synthetic palmitic acid was attractive to P. armata, linoleic acid was repellent, and oleic acid gave no response. O. scotarius and O. circulans also contained 2,3-dimethoxy-pyrido[2,3-b] pyrazine, known as a defense substance. We discuss the role of free fatty acids in predator avoidance, conspecifics attraction, and food recognition in P. armata.

Disputation

Nyckelord

  • Chemistry
  • defense
  • pyridopyrazine
  • fatty acid
  • alarm
  • repellence
  • attraction
  • movement
  • Protaphorura armata
  • Collembola

Övriga

Published
Yes
  • ISSN: 0098-0331

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