Exposure and resistance to anticoagulant rodenticides in invasive and endemic Chadian urban rodent species to develop a rational management strategy.

Autor: Mahamat AB; USC 1233 RS2GP, VetAgro Sup, INRAe, University of Lyon, Lyon, France.; Department of Biomedical and Pharmaceutical Sciences, National Higher Institute of Science and Technology, Abeche, Chad., Groud K; USC 1233 RS2GP, VetAgro Sup, INRAe, University of Lyon, Lyon, France., Djibrine SI; Department of Biomedical and Pharmaceutical Sciences, National Higher Institute of Science and Technology, Abeche, Chad.; Food Quality Control Center, N'Djamena, Chad., Soro SD; USC 1233 RS2GP, VetAgro Sup, INRAe, University of Lyon, Lyon, France., Fourel I; USC 1233 RS2GP, VetAgro Sup, INRAe, University of Lyon, Lyon, France., Rached A; USC 1233 RS2GP, VetAgro Sup, INRAe, University of Lyon, Lyon, France., Chatron N; USC 1233 RS2GP, VetAgro Sup, INRAe, University of Lyon, Lyon, France., Benoit E; USC 1233 RS2GP, VetAgro Sup, INRAe, University of Lyon, Lyon, France., Lattard V; USC 1233 RS2GP, VetAgro Sup, INRAe, University of Lyon, Lyon, France.
Jazyk: angličtina
Zdroj: Pest management science [Pest Manag Sci] 2024 Nov; Vol. 80 (11), pp. 5500-5509. Date of Electronic Publication: 2024 Jan 05.
DOI: 10.1002/ps.7911
Abstrakt: Rodent management involves the use of anticoagulant rodenticides (ARs). This use has resulted in the selection of numerous resistance alleles in the Vkorc1 gene, encoding the target enzyme of ARs. In Africa, although rodents are a major problem as a consequence of their transport and transmission of zoonotic pathogens, and damage to crops, the use of ARs and the spread of resistance alleles are poorly documented. We attempted to address both issues in Chad which is one of the largest countries in Africa. Owing to its location at the crossroads of central and northern Africa, Chad is representative of many African countries.
Methods: Using a sampling of nearly 300 rodents composed of invasive and endemic rodents collected in six of Chad's largest cities, exposure to ARs was analyzed by their quantification in the liver; the spread of AR resistance alleles was analyzed by Vkorc1 sequencing.
Results: We demonstrate the use of both ARs generations in Chadian cities and report the total sequencing of the Vkorc1 for 44 Mastomys natalensis with detection of two different haplotypes, the sequencing of the Vkorc1 for two other endemic rodent species, M. kollmannspergeri and Arvicanthis niloticus, and finally the detection of three new missense mutations - V29E, V69E and D127V - in R. rattus, potentially associated with resistance to ARs.
Discussion: These results should argue for the implementation of a reasoned management of rodent populations in Africa to avoid the spread of ARs resistance alleles. © 2023 The Authors. Pest Management Science published by John Wiley & Sons Ltd on behalf of Society of Chemical Industry.
(© 2023 The Authors. Pest Management Science published by John Wiley & Sons Ltd on behalf of Society of Chemical Industry.)
Databáze: MEDLINE
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