El Adouzi M. auteur aut IRD Arriaga-Jimenez A. auteur aut IRD Dormont L. auteur aut IRD Barthes N. auteur aut IRD Labalette A. auteur aut IRD Lapeyre B. auteur aut IRD Bonato Olivier auteur aut IRD Roy L. auteur aut IRD text journalArticle eng text/pdf born digital access The poultry red mite (PRM) is an obligatory haematophagous pest that causes substantial economic losses in poultry worldwide. The PRM does not live on the host but in the bird's environment and must find its host remotely. Hence, manipulating chicken odours is of interest. Several crude plant-originating volatile organic compounds (VOCs) have already been shown as repellent to Dermanyssus gallinae. We aimed to test whether these VOCs can interfere with PRM host-seeking behaviour by their oral administration to the poultry. The objectives were to determine (1) if hen odours are modified by supplemented feed ingestion and (2) if such treatment makes hens less attractive to the PRM. Chemical characterization by gas chromatography-mass spectrometry of the hen odour was conducted before and after the hens ingested the supplemented feed. The chromatograms obtained show that hen odour was substantially modified after the hens consumed it. Among the molecules recurrently detected from the supplemented hens, 26% were nearly absent in the unsupplemented hens. Behavioural choice tests to compare the effect of the modified and unmodified-host odours on the PRM show that some of the plant-originating emitted VOCs and the modified whole-hen odours were repellent to the PRM. specialized Control hen host-parasite interactions in-feed Nor-mite (R) odour repellent volatile compounds 080 052 082 147 2 171-181 2020 0031-1820 https://www.documentation.ird.fr/hor/fdi:010077998 10.1017/s0031182019001379 0031-1820 [F B010077998] https://www.documentation.ird.fr/hor/fdi:010077998 https://www.documentation.ird.fr/intranet/publi/2020/03/010077998.pdf Accès réservé (Intranet de l'IRD) IRD - Base Horizon / Pleins textes 2020-05-18 2025-02-24 fdi:010077998 fre