Suitability of raycell MK2 blood X-ray irradiator for the use in the sterile insect technique: Dose response in fruit flies, tsetse flies and mosquitoes

Yamada Hanano, Kaboré Bénéwendé Aristide, Bimbilé Somda Nanwintoum Séverin, Ntoyi Nonhlanhla L., de Beer Chantel Janet, Bouyer Jérémy, Caceres-Barrios Carlos, Mach Robert L., Gómez-Simuta Yeudiel. 2023. Suitability of raycell MK2 blood X-ray irradiator for the use in the sterile insect technique: Dose response in fruit flies, tsetse flies and mosquitoes. Insects, 14 (1), n.spéc. Combining Biological Control and Sterile Insect Technique to Enhance Invasive Pest Species Management:92, 15 p.

https://doi.org/10.3390/insects14010092

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Résumé : The sterile insect technique (SIT) is based on the inundatory field release of a target pest following their reproductive sterilization via exposure to radiation. Until recently, gamma irradiation from isotopic sources has been the most widely used in SIT programs. As isotopic sources are becoming increasingly expensive, especially for small programs, and regulations surrounding their procurement and shipment increasingly strict, irradiation capacity is one of the limiting factors in smaller or newly developing SIT projects. For this reason, the possibility of using X-ray irradiators has been evaluated in the recent decade. The availability of “off-the-shelf” blood X-ray irradiators that meet the technical requirements for insect irradiation can provide irradiation capacity for those SIT projects in which the acquisition of gamma ray irradiators is not feasible. Following the recent technical characterization of a Raycell MK2 X-ray blood irradiator, it was found in this study, that MK2 instruments were suitable for the sterilization of fruit flies, tsetse flies and mosquitoes, inducing comparable, even slightly higher, sterility levels compared to those achieved by gamma ray irradiation. This, together with its estimated processing efficiency, shows that MK2 irradiators are suitable for small- to mid-sized SIT programs.

Mots-clés Agrovoc : lâcher d'insectes stériles, irradiation aux rayons x, Aedes aegypti, Glossina palpalis, Ceratitis capitata, irradiation, Irradiation gamma, Ceratitis, Tephritidae

Mots-clés géographiques Agrovoc : Sénégal, Burkina Faso

Mots-clés libres : Irradiation, Vector control

Classification Agris : H10 - Ravageurs des plantes

Champ stratégique Cirad : CTS 4 (2019-) - Santé des plantes, des animaux et des écosystèmes

Agences de financement hors UE : International Atomic Energy Agency, Food and Agriculture Organization

Projets sur financement : (AUT) Surge expansion for the sterile insect technique to control mosquito populations that transmit the Zika virus

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