Prevalence of Trypanosoma and Sodalis in wild populations of tsetse flies and their impact on sterile insect technique programmes for tsetse eradication.

Autor: Dieng MM; Insect Pest Control Laboratory, Joint FAO/IAEA Centre of Nuclear Techniques in Food and Agriculture, 1400, Vienna, Austria., Dera KM; Insect Pest Control Laboratory, Joint FAO/IAEA Centre of Nuclear Techniques in Food and Agriculture, 1400, Vienna, Austria.; Insectarium de Bobo Dioulasso-Campagne d'Eradication de la mouche tsetse et de la Trypanosomose (IBD-CETT), 01 BP 1087, Bobo Dioulasso 01, Burkina Faso., Moyaba P; Epidemiology, Vectors and Parasites, Agricultural Research Council-Onderstepoort Veterinary Research, Pretoria, South Africa., Ouedraogo GMS; Insectarium de Bobo Dioulasso-Campagne d'Eradication de la mouche tsetse et de la Trypanosomose (IBD-CETT), 01 BP 1087, Bobo Dioulasso 01, Burkina Faso., Demirbas-Uzel G; Insect Pest Control Laboratory, Joint FAO/IAEA Centre of Nuclear Techniques in Food and Agriculture, 1400, Vienna, Austria., Gstöttenmayer F; Insect Pest Control Laboratory, Joint FAO/IAEA Centre of Nuclear Techniques in Food and Agriculture, 1400, Vienna, Austria., Mulandane FC; University Eduardo Mondlane, Centro de Biotecnologia, Av. de Moçambique Km 1.5, Maputo, Mozambique., Neves L; University Eduardo Mondlane, Centro de Biotecnologia, Av. de Moçambique Km 1.5, Maputo, Mozambique.; Department of Veterinary Tropical Diseases, University of Pretoria, Private Bag X04, Onderstepoort, 0110, South Africa., Mdluli S; Epidemiology Unit, Department of Veterinary Services, PO Box 4192, Manzini, Eswatini., Rayaisse JB; Centre International de Recherche-Développement sur l'Elevage en zone Subhumide (CIRDES), 01 BP 454, Bobo-Dioulasso 01, Burkina Faso., Belem AMG; Universite´ Nazi Boni (UNB), Bobo-Dioulasso, Burkina Faso., Pagabeleguem S; Insectarium de Bobo Dioulasso-Campagne d'Eradication de la mouche tsetse et de la Trypanosomose (IBD-CETT), 01 BP 1087, Bobo Dioulasso 01, Burkina Faso.; University of Dedougou, B.P. 176, Dédougou 01, Burkina Faso., de Beer CJ; Insect Pest Control Laboratory, Joint FAO/IAEA Centre of Nuclear Techniques in Food and Agriculture, 1400, Vienna, Austria.; Epidemiology, Vectors and Parasites, Agricultural Research Council-Onderstepoort Veterinary Research, Pretoria, South Africa., Parker AG; Roppersbergweg 15, 2381, Laab im Walde, Austria., Van Den Abbeele J; Institute of Tropical Medicine Antwerp (ITM), Antwerp, Belgium., Mach RL; Institute of Chemical, Environmental, and Bioscience Engineering, Vienna University of Technology, Gumpendorfer Straße 1a, 1060, Vienna, Austria., Vreysen MJB; Insect Pest Control Laboratory, Joint FAO/IAEA Centre of Nuclear Techniques in Food and Agriculture, 1400, Vienna, Austria., Abd-Alla AMM; Insect Pest Control Laboratory, Joint FAO/IAEA Centre of Nuclear Techniques in Food and Agriculture, 1400, Vienna, Austria. a.m.m.abd-alla@iaea.org.
Jazyk: angličtina
Zdroj: Scientific reports [Sci Rep] 2022 Feb 28; Vol. 12 (1), pp. 3322. Date of Electronic Publication: 2022 Feb 28.
DOI: 10.1038/s41598-022-06699-2
Abstrakt: The sterile insect technique (SIT) is an environment friendly and sustainable method to manage insect pests of economic importance through successive releases of sterile irradiated males of the targeted species to a defined area. A mating of a sterile male with a virgin wild female will result in no offspring, and ultimately lead to the suppression or eradication of the targeted population. Tsetse flies, vectors of African Trypanosoma, have a highly regulated and defined microbial fauna composed of three bacterial symbionts that may have a role to play in the establishment of Trypanosoma infections in the flies and hence, may influence the vectorial competence of the released sterile males. Sodalis bacteria seem to interact with Trypanosoma infection in tsetse flies. Field-caught tsetse flies of ten different taxa and from 15 countries were screened using PCR to detect the presence of Sodalis and Trypanosoma species and analyse their interaction. The results indicate that the prevalence of Sodalis and Trypanosoma varied with country and tsetse species. Trypanosome prevalence was higher in east, central and southern African countries than in west African countries. Tsetse fly infection rates with Trypanosoma vivax and T. brucei sspp were higher in west African countries, whereas tsetse infection with T. congolense and T. simiae, T. simiae (tsavo) and T. godfreyi were higher in east, central and south African countries. Sodalis prevalence was high in Glossina morsitans morsitans and G. pallidipes but absent in G. tachinoides. Double and triple infections with Trypanosoma taxa and coinfection of Sodalis and Trypanosoma were rarely observed but it occurs in some taxa and locations. A significant Chi square value (< 0.05) seems to suggest that Sodalis and Trypanosoma infection correlate in G. palpalis gambiensis, G. pallidipes and G. medicorum. Trypanosoma infection seemed significantly associated with an increased density of Sodalis in wild G. m. morsitans and G. pallidipes flies, however, there was no significant impact of Sodalis infection on trypanosome density.
(© 2022. The Author(s).)
Databáze: MEDLINE
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