Skip to Main content Skip to Navigation
Journal articles

Hygienic grooming is induced by contact chemicals in Drosophila melanogaster

Abstract : In social insects, grooming is considered as a behavioral defense against pathogen and parasite infections since it contributes to remove microbes from their cuticle. However, stimuli which trigger this behavior are not well characterized yet. We examined if activating contact chemoreceptive sensilla could trigger grooming activities in Drosophila melanogaster. We monitored the grooming responses of decapitated flies to compounds known to activate the immune system, e.g., dead Escherichia coli (Ec) and lipopolysaccharides (LPS), and to tastants such as quinine, sucrose, and salt. LPS, quinine, and Ec were quite effective in triggering grooming movements when touching the distal border of the wings and the legs, while sucrose had no effect. Contact chemoreceptors are necessary and sufficient to elicit such responses, as grooming could not be elicited by LPS in poxn mutants deprived of external taste sensilla, and as grooming was elicited by light when a channel rhodopsin receptor was expressed in bitter-sensitive cells expressing Gr33a. Contact chemoreceptors distributed along the distal border of the wings respond to these tastants by an increased spiking activity, in response to quinine, Ec, LPS, sucrose, and KCI. These results demonstrate for the first time that bacterial compounds trigger grooming activities in D. melanogaster, and indicate that contact chemoreceptors located on the wings participate in the detection of such chemicals.
Document type :
Journal articles
Complete list of metadatas

Cited literature [67 references]  Display  Hide  Download

https://hal-agroparistech.archives-ouvertes.fr/hal-01544978
Contributor : Luca Picardi <>
Submitted on : Thursday, May 28, 2020 - 4:38:36 PM
Last modification on : Wednesday, September 16, 2020 - 5:48:49 PM

File

Yanagawa_2014_Frontiers in Beh...
Publisher files allowed on an open archive

Licence


Distributed under a Creative Commons Attribution 4.0 International License

Identifiers

Collections

Citation

Aya Yanagawa, Alexandra M. A. Guigue, Frederic Marion-Poll. Hygienic grooming is induced by contact chemicals in Drosophila melanogaster. Frontiers in Behavioral Neuroscience, Frontiers, 2014, 8 (254), ⟨10.3389/fnbeh.2014.00254⟩. ⟨hal-01544978⟩

Share

Metrics

Record views

158

Files downloads

48