The length and width of 1297 Fasciola hepatica eggs shed in cattle hosts, 337 in sheep and 199 in... more The length and width of 1297 Fasciola hepatica eggs shed in cattle hosts, 337 in sheep and 199 in nutria, were measured from several parts of France. The data were compared with those obtained from other studies in Spain, France (where rats were also investigated), Germany and the Netherlands. One way analysis of variance and discriminant analysis were used to assess differences between host origins. The distribution of length and width of eggs were analysed using skewness and kurtosis Fisher coefficients. The eggs recovered from sheep, cattle, rodents and lagomorphs were different in size: the eggs found in rodents (length L × width W in μm: 8592) and lagomorphs (L × W in μm: 9100) were smaller than those found in sheep and cattle (L×W in μm: 10,000). These morphological differences in F. hepatica eggs were host-induced in rats (L×W in μm: 9709 in cattle to 8949 in rats) and rabbits (L×W in μm: 9709 in cattle to 8432 in rabbits). These differences in size of eggs might correspond t...
Texte de la communication orale présentée lors des Journées AEEMA, 22-23 mai 2008National audienc... more Texte de la communication orale présentée lors des Journées AEEMA, 22-23 mai 2008National audienceTicks play a major role in the spread of vector-borne diseases since they can transmit various pathogens (viruses, bacteria, protozoa) potentially harmful to animals and/or humans. Epidemiological modelling is a powerful tool to evaluate strategies of disease control. For vector-borne diseases, it requires to first develop a model of the vector's population dynamics, in our case that of the tick Ixodes ricinus. This work presents a model that makes it possible to simulate the cycle of the tick depending on biotic (host density) or abiotic (temperature) factors. This model was applied to various habitats (woodland and meadows, separated by an ecotone) between which hosts migrate. The results show a realistic simulation of changes in tick density. Furthermore, the results from the multi-habitat model underline the strong influence of host migration between habitats. Woodland appears a...
Des sérologies leptospiroses, vis à vis de différents sérogroupes et sérovars, ont été réalisées ... more Des sérologies leptospiroses, vis à vis de différents sérogroupes et sérovars, ont été réalisées chez 2988 rongeurs aquatiques (2684 ragondins et 304 rats musqués) piégés dans 26 départements. Les prévalences sérologiques obtenues ont été comparées aux prévalences sérologiques réalisées chez les bovins dans ces mêmes départements.NANTES-Ecole Nat.Vétérinaire (441092302) / SudocSudocFranceF
The length and width of 1297 Fasciola hepatica eggs shed in cattle hosts, 337 in sheep and 199 in... more The length and width of 1297 Fasciola hepatica eggs shed in cattle hosts, 337 in sheep and 199 in nutria, were measured from several parts of France. The data were compared with those obtained from other studies in Spain, France (where rats were also investigated), Germany and the Netherlands. One way analysis of variance and discriminant analysis were used to assess differences between host origins. The distribution of length and width of eggs were analysed using skewness and kurtosis Fisher coefficients. The eggs recovered from sheep, cattle, rodents and lagomorphs were different in size: the eggs found in rodents (length L × width W in μm: 8592) and lagomorphs (L × W in μm: 9100) were smaller than those found in sheep and cattle (L×W in μm: 10,000). These morphological differences in F. hepatica eggs were host-induced in rats (L×W in μm: 9709 in cattle to 8949 in rats) and rabbits (L×W in μm: 9709 in cattle to 8432 in rabbits). These differences in size of eggs might correspond t...
Texte de la communication orale présentée lors des Journées AEEMA, 22-23 mai 2008National audienc... more Texte de la communication orale présentée lors des Journées AEEMA, 22-23 mai 2008National audienceTicks play a major role in the spread of vector-borne diseases since they can transmit various pathogens (viruses, bacteria, protozoa) potentially harmful to animals and/or humans. Epidemiological modelling is a powerful tool to evaluate strategies of disease control. For vector-borne diseases, it requires to first develop a model of the vector's population dynamics, in our case that of the tick Ixodes ricinus. This work presents a model that makes it possible to simulate the cycle of the tick depending on biotic (host density) or abiotic (temperature) factors. This model was applied to various habitats (woodland and meadows, separated by an ecotone) between which hosts migrate. The results show a realistic simulation of changes in tick density. Furthermore, the results from the multi-habitat model underline the strong influence of host migration between habitats. Woodland appears a...
Des sérologies leptospiroses, vis à vis de différents sérogroupes et sérovars, ont été réalisées ... more Des sérologies leptospiroses, vis à vis de différents sérogroupes et sérovars, ont été réalisées chez 2988 rongeurs aquatiques (2684 ragondins et 304 rats musqués) piégés dans 26 départements. Les prévalences sérologiques obtenues ont été comparées aux prévalences sérologiques réalisées chez les bovins dans ces mêmes départements.NANTES-Ecole Nat.Vétérinaire (441092302) / SudocSudocFranceF
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