Morpho-functional identification of abdominal olfactory receptors in the midge Culicoides imicola.

Journal of Comparative Physiology. A, Neuroethology, Sensory, Neural, and Behavioral Physiology
G SollaiAnna Liscia

Abstract

The aim of the present study was to examine the presence and the possible role of abdominal olfactory sensilla in Culicoides imicola mediating the search for potential hosts and oviposition sites, by means of a morphological, electrophysiological and behavioural approach. The results reported here show that in the midge C. imicola the whole abdomen, comprising the ovipositor, are endowed with three morphotypes of multiporous sensilla that display olfactory sensitivity towards kairomones related to the host-animal skin such as L: -(+)-lactic acid and 1-octen-3-ol, to the host-animal urine such as 3-ethylphenol and 4-propylphenol, and to the potent attractant sesame seed oil. Electrophysiological and behavioural data for the first time suggest in the midge the involvement of abdominal olfactory structures in the choice of the oviposition sites and allow in discussing their possible role in the host-animal localisation. Field experiments showed that light traps baited with the aforementioned compounds elicited a stronger degree of attractiveness on midges with respect to the unbaited traps (control), although to a different extent. Our results, while implying a number of considerations concerning the role of molecules tested as ka...Continue Reading

References

Nov 1, 1993·Journal of Medical Entomology·Y Braverman, J R Linley
Jan 16, 1998·Medical and Veterinary Entomology·Y Braverman, A Chizov-Ginzburg
Apr 13, 2000·Annual Review of Entomology·P S MellorM Baylis
Jan 28, 2003·Biochemical Society Transactions·A J Mordue Luntz
Jan 12, 2005·Medical and Veterinary Entomology·V MandsA Blackwell
Mar 21, 2009·Trends in Microbiology·Simon CarpenterPhilip S Mellor

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Citations

May 2, 2014·Archives of Insect Biochemistry and Physiology·Xin YiGuohua Zhong
Mar 20, 2020·Archives of Insect Biochemistry and Physiology·Giulia CordaGiorgia Sollai

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