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J Comp Physiol A Neuroethol Sens Neural Behav Physiol

Title:		"Olfactory and behavioural responses of tsetse flies, Glossina spp., to rumen metabolites"
Author(s):		Harraca V; Syed Z; Guerin PM;
Address:		"Faculty of Science, Institute of Biology, University of Neuchatel, Neuchatel, Switzerland. vincent.harraca@ekol.lu.se"
Journal Title:		J Comp Physiol A Neuroethol Sens Neural Behav Physiol
Year:		2009
Volume:		20090722
Issue:		9
Page Number:		815 - 824
DOI:		10.1007/s00359-009-0459-y
ISSN/ISBN:		1432-1351 (Electronic) 0340-7594 (Linking)
Abstract:		"Herbivores provide tsetse flies with a blood meal, and both wild and domesticated ruminants dominate as hosts. As volatile metabolites from the rumen are regularly eructed with rumen gas, these products could serve tsetse flies during host searching. To test this, we first established that the odour of rumen fluid is attractive to hungry Glossina pallidipes in a wind tunnel. We then made antennogram recordings from three tsetse species (G. pallidipes morsitans group, G. fuscipes palpalis group and G. brevipalpis fusca group) coupled to gas chromatographic analysis of rumen fluid odour and of its acidic, mildly acidic and neutral fractions. This shows tsetse flies can detect terpenes, ketones, carboxylic acids, aliphatic aldehydes, sulphides, phenols and indoles from this biological substrate. A mixture of carboxylic acids at a ratio similar to that present in rumen fluid induced behavioural responses from G. pallidipes in the wind tunnel that were moderately better than the solvent control. The similarities in the sensory responses of the tsetse fly species to metabolites from ruminants demonstrated in this study testify to a contribution of habitat exploitation by these vertebrates in the Africa-wide distribution of tsetse"
Keywords:		Animals Eructation *Feeding Behavior Food Preferences Gases *Host-Parasite Interactions Humans Hydrogen-Ion Concentration *Odorants Ruminants/metabolism/*parasitology Sense Organs/*physiology *Smell Tsetse Flies/*physiology Volatilization;
Notes:		"MedlineHarraca, Vincent Syed, Z Guerin, P M eng Research Support, Non-U.S. Gov't Germany 2009/07/25 J Comp Physiol A Neuroethol Sens Neural Behav Physiol. 2009 Sep; 195(9):815-24. doi: 10.1007/s00359-009-0459-y. Epub 2009 Jul 22"