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Prevalence of Spiroplasma and interaction with wild Glossina tachinoides microbiota
by
Njokou, Flobert
, Ouedraogo, Gisele MS
, Moyaba, Percy
, Pagabeleguem, Soumaïla
, Abd-Alla, Adly MM
, Dera, Kiswend-Sida M
, Ngambia Freitas, François S
, Mach, Robert L
, Vreysen, Marc JB
, Dieng, Mouhamadou M
, de Beer, Chantel J
in
interactions
/ microbe infection rate
/ paratransgenesis
/ trypanosoma spp
2023
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Prevalence of Spiroplasma and interaction with wild Glossina tachinoides microbiota
by
Njokou, Flobert
, Ouedraogo, Gisele MS
, Moyaba, Percy
, Pagabeleguem, Soumaïla
, Abd-Alla, Adly MM
, Dera, Kiswend-Sida M
, Ngambia Freitas, François S
, Mach, Robert L
, Vreysen, Marc JB
, Dieng, Mouhamadou M
, de Beer, Chantel J
in
interactions
/ microbe infection rate
/ paratransgenesis
/ trypanosoma spp
2023
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Prevalence of Spiroplasma and interaction with wild Glossina tachinoides microbiota
by
Njokou, Flobert
, Ouedraogo, Gisele MS
, Moyaba, Percy
, Pagabeleguem, Soumaïla
, Abd-Alla, Adly MM
, Dera, Kiswend-Sida M
, Ngambia Freitas, François S
, Mach, Robert L
, Vreysen, Marc JB
, Dieng, Mouhamadou M
, de Beer, Chantel J
in
interactions
/ microbe infection rate
/ paratransgenesis
/ trypanosoma spp
2023
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Prevalence of Spiroplasma and interaction with wild Glossina tachinoides microbiota
Journal Article
Prevalence of Spiroplasma and interaction with wild Glossina tachinoides microbiota
2023
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Overview
Tsetse flies (Diptera: Glossinidae) are vectors of the tropical neglected diseases sleeping sickness in humans and nagana in animals. The elimination of these diseases is linked to control of the vector. The sterile insect technique (SIT) is an environment-friendly method that has been shown to be effective when applied in an area-wide integrated pest management approach. However, as irradiated males conserve their vectorial competence, there is the potential risk of trypanosome transmission with their release in the field. Analyzing the interaction between the tsetse fly and its microbiota, and between different microbiota and the trypanosome, might provide important information to enhance the fly’s resistance to trypanosome infection. This study on the prevalence of Spiroplasma in wild populations of seven tsetse species from East, West, Central and Southern Africa showed that Spiroplasma is present only in Glossina fuscipes fuscipes and Glossina tachinoides . In G. tachinoides, a significant deviation from independence in co-infection with Spiroplasma and Trypanosoma spp. was observed. Moreover, Spiroplasma infections seem to significantly reduce the density of the trypanosomes, suggesting that Spiroplasma might enhance tsetse fly’s refractoriness to the trypanosome infections. This finding might be useful to reduce risks associated with the release of sterile males during SIT implementation in trypanosome endemic areas. Les mouches tsé-tsé (Diptera : Glossinidae) sont les vecteurs de maladies tropicales négligées, la maladie du sommeil chez l’homme et la nagana chez les animaux. L’élimination de ces maladies est liée à la lutte contre le vecteur. La technique de l’insecte stérile (TIS) est une méthode respectueuse de l’environnement qui s’est révélée efficace lorsqu’elle est appliquée dans le cadre d’une approche de lutte antiparasitaire intégrée à l’échelle d’une zone. Cependant, comme les mâles irradiés conservent leur compétence vectorielle, il existe un risque potentiel de transmission des trypanosomes lors de la libération des mâles sur le terrain. L’analyse de l’interaction entre la mouche tsé-tsé et son microbiote, et entre différents microbiotes et le trypanosome, pourrait fournir des informations importantes pour améliorer la résistance de la mouche à l’infection trypanosomienne. Cette étude sur la prévalence de Spiroplasma dans les populations sauvages de sept espèces de glossines d’Afrique de l’Est, de l’Ouest, centrale et australe a montré que Spiroplasma est présent uniquement chez Glossina fuscipes fuscipes et Glossina tachinoides . Chez G. tachinoides , un écart significatif par rapport à l’indépendance dans la co-infection par Spiroplasma et Trypanosoma spp. a été observé. De plus, les infections à Spiroplasma semblent réduire considérablement la densité des trypanosomes, ce qui suggère que Spiroplasma pourrait renforcer le caractère réfractaire de la mouche tsé-tsé aux infections trypanosomiennes. Cette découverte pourrait être utile pour réduire le risque associé à la libération de mâles stériles lors de la mise en œuvre de la TIS dans les zones d’endémie trypanosomienne.
Publisher
EDP Sciences
Subject
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