Characterization of dog repellent factor from cuticular secretion of female yellow dog tick, Haemaphysalis leachi

Burger B.V. ; Marx B. ; Le Roux M. ; Oelofsen B.W. (2006)


During its natural life cycle, the yellow dog tick, Haemaphysalis leachi, has three hosts, and it has to spend enough time on each of them to complete a blood meal. When irritated, the females of this tick species produce a cuticular secretion that contains a dog-repelling allomone. This improves the tick's chances of survival by deterring the dog from biting the tick off its body. Employing response-guided isolation techniques in conjunction with gas chromatography-mass spectrometry, the defensive allomone of H. leachi was found to consist of the six homologous aliphatic aldehydes from hexanal to undecanal. A mixture of synthetic versions of these six aldehydes in quantities corresponding to those secreted by one tick elicited strong aversion reactions in the majority of dogs of various breeds. © 2006 Springer Science + Business Media, Inc.

Please refer to this item in SUNScholar by using the following persistent URL:
This item appears in the following collections: