Propagation du Lyssavirus chez les petits mammifères (Muridae et Soricidae) dans la Préfecture de Kindia, République de Guinée (Basse Guinée)

Abstract

L’étude porte sur la propagation du Lyssavirus chez les petits mammifères dans la Préfecture de Kindia (Basse Guinée) a été réalisée entre avril 2015 et mars 2016 dans les différents biotopes (Maisons habitées, Forêts-Buissons, Champs agricoles, Entrepôts et Berges) et qui a pour objectif: Contribuée à l’amélioration de l’état de santé de la population. Pendant cette période d’étude, 412 rongeurs repartis en 12 espèces ont été capturées à savoir le rat d’herbe-Arvicanthis rufinus, les rats-Cricetomys gambianus, les rats-Crocidurinae spp., les souris rayées-Lemniscomys striatus, Lophuromys ansorgei, Lophuromys sikapusi, le rat à mamelles multiples-Mastomys spp., souris de maison-Mus musculus, Pelomys fallax, le rat de forêt-Praomys rostratus, le rat noir-Rattus rattus et le Malacomys edyardsi spp. Les plus répandus sont les Mastomys, Rattus rattus, Mus musculus et Cricetomys gambianus. En saison sèche, le nombre de rongeurs capturés dans la préfecture de Kindia a atteint 292 (71%) contre 120 (29%) rongeurs en saison pluvieuse. Pour des fins de recherches virologiques, le cerveau de 221 rongeurs a été prélevé et analysé parmi eux, 18 (8%) ont été trouvé porteurs de l’ARN de Lyssavirus.
 English title: Spread of Lyssavirus among small mammals (Muridae and Soricidae) in Kindia prefecture, Republic of Guinea (Lower Guinea)
 The study focuses on the spread of Lyssavirus among small mammals in the Prefecture of Kindia (Lower Guinea) was carried out between April 2015 and March 2016 in the different biotopes (inhabited houses, Forests-Bushes, Agricultural fields, Warehouses and Banks) and which has for objective: Contributed to the improvement of the state of health of the population. During this period, 412 rodents were caught in 12 species including the grass rat-Arvicanthis rufinus, the Cricetomys gambianus-rats, the Crocidurinae spp rats, striped mice Lemniscomys striatus, Lophuromys ansorgei, Lophuromys sikapusi, the multiple-teat rat-Mastomys spp., house mouse-Mus musculus, Pelomys fallax, forest rat-Praomys rostratus, black rat-Rattus rattus, and Malacomys edwardsi spp. The most common are: Mastomys spp., Rattus rattus, Mus musculus and Cricetomys gambianus. In the dry season, the number of rodents caught in the prefecture of Kindia reached 292 (71%) against 120 (29%) rodents caught during the rainy season. For virological research purposes, the brain of 221 rodents was collected and analyzed among them 18 rodents (8%) were found to carry Lyssavirus RNA.

Contribution of small rodent communities (Muridae) to the history of West Central African savannas (case of Gabonese savannas): diversity, biogeographic affinities, phylogeography and paleoenvironmental analyses

“…Despite these differences, Gabon harbours a diversity of savanna landscapes suited for a comparative study of rodent communities. The diversity of small rodents in Gabonese savannas has been extensively documented (Mboumba et al, 2020;2021). The present study is aimed at assessing the species distribution of the murid community in these four very different savannas in order to assess their possible relationships with the different savanna types and the biogeographic pattern of species distribution.…”

“…The history of the geographic distribution of small rodent communities is expected to be closely tied to that of the Gabonese savanna landscape (Keita et al, 2021), considering i) the two classic hypotheses of a human or a paleoclimatic origin, and ii) the successive phases of relative forest or savanna expansion or fragmentation that occurred in this region. The history of the dynamics of the savannas of Gabon or West Central Africa has often been presented through observations of plant macrofossils, and archaeological, pedological, paleoenvironmental and human influences.…”