Deterrence of feeding in Rhodnius prolixus (Hemiptera: Reduviidae) after treatment of antennae with a nitric oxide donor

Title:

Deterrence of feeding in Rhodnius prolixus (Hemiptera: Reduviidae) after treatment of antennae with a nitric oxide donor

Creator:

Sfara, Valeria, Zerba, Eduardo N., and Alzogaray, Raúl A.

Identifier:

https://cdk.lib.cas.cz/client/handle/uuid:e39692fa-c363-44bc-814b-a74b2b2b17de
uuid:e39692fa-c363-44bc-814b-a74b2b2b17de

Subject:

Zoologie, entomologie, Triatominae, Rhodnius prolixus, feeding behaviour, nitric oxide, 2, and 59

Type:

article, články, model:article, and TEXT

Description:

The blood-sucking bug Rhodnius prolixus is the main vector of Chagas Disease in Colombia, Venezuela and several countries in Central America. Nitric oxide (NO) is a ubiquitous gaseous molecule present in most types of cell and participates in the olfactory pathway of insects. In this work, nitroso-acetyl-cysteine (SNAC), a nitric oxide donor, was topically applied to the antennae of fifth instar nymphs of R. prolixus. After SNAC treatment, these insects showed a dose-dependent reluctance to feed when provided with a living pigeon as the food source (ED50 = 5.2 µg/insect). However, there was no reluctance to feed when db-cGMP was applied to the antennae of nymphs. In another experiment, insects that had their antennae treated with SNAC were less attracted than the control group to a CO2 source. A possible role of NO in the olfactory pathway of R. prolixus is discussed. and Valeria Sfara, Eduardo N. Zerba, Raúl A. Alzogaray.

Language:

English

Rights:

http://creativecommons.org/publicdomain/mark/1.0/
policy:public

Source:

European Journal of Entomology | 2011 Volume:108 | Number:4

Harvested from:

CDK

Metadata only:

false