Quality control and mating performance of irradiated Glossina palpalis gambiensis males

Ilboudo Kadidiata, Camara Karifa, Salou Ernest Wendemanegde, Gimonneau Geoffrey. 2022. Quality control and mating performance of irradiated Glossina palpalis gambiensis males. Insects, 13 (5), n.spéc. Sterile Insect Technique (SIT) and Its Applications:476, 11 p.

https://doi.org/10.3390/insects13050476

Article de revue ; Article de recherche ; Article de revue à facteur d'impact

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Url - jeu de données - Dataverse Cirad : https://doi.org/10.18167/DVN1/DFHSYT

Résumé : The biological quality of sterile male insects produced in a mass-rearing facility is a prerequisite for the success of the SIT, which is a component of area-wide integrated pest management (AW-IPM). Indeed, sterile male insects released in the field must have a good mating performance in order to compete with wild males, but they must also present the required level of sterility. In the present study, the biological quality of sterile male Glossina palpalis gambiensis produced in a mass-rearing insectary was assessed through quality control testing. The mating performance of irradiated males was assessed in walk-in field cages. Irradiation had no effect on adult emergence but significantly reduced the percentage of operational flies (from 89.58% to 79.87%) and male survival (from 5 to 4 days, on average). However, irradiation did not impact the sterile male insemination potential, with all females inseminated and more than 80% of the spermathecae completely filled. The rate of induced sterility in females was 89.67% due to a dose rate decrease of the radiation source. Moreover, sterile males were able to compete successfully with untreated fertile males for untreated females in walk-in field cages. This study confirmed that the flies were still competitive and stressed the importance of regularly checking the radiation source parameters.

Mots-clés Agrovoc : lâcher d'insectes stériles, gestion intégrée des ravageurs, Glossina palpalis, irradiation, contrôle de qualité, élevage d'insectes, performance de reproduction, infertilité mâle

Mots-clés complémentaires : Glossina palpalis gambiensis

Mots-clés libres : Sterile Insect Technique, Tsetse fly, Competitiveness, Irradiation

Classification Agris : L72 - Organismes nuisibles des animaux
L01 - Élevage - Considérations générales
L53 - Physiologie animale - Reproduction

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

Agences de financement hors UE : International Atomic Energy Agency, Institut de Recherche pour le Développement

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