Evaluation of different blood-feeding frequencies on Glossina palpalis gambiensis performance in a mass-rearing insectary

Camara Karifa, Ilboudo Kadidiata, Salou Ernest Wendemanegde, Gimonneau Geoffrey. 2021. Evaluation of different blood-feeding frequencies on Glossina palpalis gambiensis performance in a mass-rearing insectary. Parasites and Vectors, 14:46, 8 p.

https://doi.org/10.1186/s13071-020-04559-4

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Url - jeu de données - Dataverse Cirad : https://doi.org/10.18167/DVN1/1SPLYD

Quartile : Q1, Sujet : PARASITOLOGY / Quartile : Q1, Sujet : TROPICAL MEDICINE

Résumé : Background: The main challenge to the successful mass-rearing of the tsetse fly in insectaries, especially in Africa, is a sustainable supply of high-quality blood meals. As such, the collection of high-quality blood in large quantities can be an important constraint to production. One possible strategy to lessen the impact of this constraint is to modify the blood-feeding frequency. In the study reported here, we evaluated the effect of three blood-feeding frequencies on the colony performance of Glossina palpalis gambiensis, a riverine tsetse fly species. Methods: The effect of three, four and six blood-feedings per week on female survival and productivity were evaluated over a 30-day period. Progeny emergence rate and flight ability were also evaluated. Results: Female survival was significantly higher in flies fed four times per week (87%) than in those fed three (72%) and six times per week (78%; P < 0.05). Productivity was similar between flies fed four and six times per week (457 and 454 larvae) but significantly reduced in flies fed three times per week (280 larvae produced; P < 0.05). Both emergence rate and flight ability rate were also similar between flies fed four times per week (97 and 94%, respectively) and six times per week (96 and 97%, respectively), but they were significantly reduced when flies were fed three times per week (89 and 84%, respectively; P < 0.05). Conclusions: Blood-feeding frequency could be reduced from six times per week to four times per week without affecting mass-rearing production and progeny quality. The implications of these results on tsetse mass-rearing production are discussed.

Mots-clés Agrovoc : Glossina palpalis, élevage en masse, élevage d'insectes, alimentation des animaux, fréquence des repas, hématophagie, performance animale, survie

Mots-clés complémentaires : Glossina palpalis gambiensis, insectarium

Mots-clés libres : Tsetse fly, Productivity, Survival, Emergence rate, Flight ability

Classification Agris : L72 - Organismes nuisibles des animaux

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

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