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Rhodnius prolixus smells repellents: Behavioural evidence and test of present and potential compounds inducing repellency in Chagas disease vectors.
Zermoglio, Paula F; Martin-Herrou, Hadrien; Bignon, Yohan; Lazzari, Claudio R.
Afiliação
  • Zermoglio PF; Institut de Recherche sur la Biologie de l'Insecte, UMR CNRS 7261 - Université François Rabelais, Tours, France.
  • Martin-Herrou H; Institut de Recherche sur la Biologie de l'Insecte, UMR CNRS 7261 - Université François Rabelais, Tours, France.
  • Bignon Y; Institut de Recherche sur la Biologie de l'Insecte, UMR CNRS 7261 - Université François Rabelais, Tours, France.
  • Lazzari CR; Institut de Recherche sur la Biologie de l'Insecte, UMR CNRS 7261 - Université François Rabelais, Tours, France. Electronic address: claudio.lazzari@univ-tours.fr.
J Insect Physiol ; 81: 137-44, 2015 Oct.
Article em En | MEDLINE | ID: mdl-26210345
ABSTRACT
Insect repellents are known since many decades ago and constitute a major tool for personal protection against the biting of mosquitoes. Despite their wide use, the understanding of why and how repellents repel is relatively recent. In particular, the question about to what extent insects other than mosquitoes are repulsed by repellents remains open. We developed a series of bioassays aimed to test the performance of well established as well as potential repellent molecules on the Chagas disease vector Rhodnius prolixus. Besides testing their ability to prevent biting, we tested the way in which they act, i.e., by obstructing the detection of attractive odours or by themselves. By using three different experimental protocols (host-biting, open-loop orientation to odours and heat-triggered proboscis extension response) we show that DEET repels bugs both in the presence and in the absence of host-associated odours but only at the highest quantities tested. Piperidine was effective with or without a host and icaridine only repelled in the absence of a living host. Three other molecules recently proposed as potential repellents due to their affinity to the Ir40a(+) receptor (which is also activated by DEET) did not evoke significant repellency. Our work provides novel experimental tools and sheds light on the mechanism behind repellency in haematophagous bugs.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Rhodnius / Olfato / Repelentes de Insetos Limite: Animals / Humans Idioma: En Revista: J Insect Physiol Ano de publicação: 2015 Tipo de documento: Article País de afiliação: França

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Rhodnius / Olfato / Repelentes de Insetos Limite: Animals / Humans Idioma: En Revista: J Insect Physiol Ano de publicação: 2015 Tipo de documento: Article País de afiliação: França