Étude de quelques paramètres écologiques deCtenocephalides felis strongylus(Jordan, 1925) (Siphonaptera : Pulicidae)

Rickettsia felis (Rickettsiales: Rickettsiaceae) in Ctenocephalides felis felis (Siphonaptera: Pulicidae) in the State of São Paulo, Brazil [Rickettsia felis (Rickettsiales: Rickettsiaceae) em Ctenocephalides felis felis (Siphonaptera: Pulicidae) no estado de São Paulo]

Samples of 10 and 14 Ctenocephalides felis felis fleas were collected on dogs from Pedreira and Mogi das Cruzes municipalities, respectively, in the State of São Paulo, Brazil, for detection of Rickettsia spp. Individual fleas were submitted to Polymerase Chain Reaction targeting the 17-kDa and the 190-kDa (OmpA) genes of Rickettsiae. This later gene is specific for spotted fever group. Nine fl...

Ctenocephalides felis felis vs. Ctenocephalides canis (Siphonaptera: Pulicidae): some issues in correctly identify these species Ctenocephalides felis felis vs. Ctenocephalides canis: (Siphonaptera: Pulicidae): algumas questões para identificar corretamente estas espécies

Ctenocephalides felis felis is one of the most important ectoparasites of dogs and cats throughout the world, because of its geographical distribution, dual parasitological action as an infesting agent and a vector of diseases, the economic losses and the acquired resistance against common insecticides. In Brazil, it surpasses Ctenocephalides canis in distribution, number of host species infest...

Sur quelques paramètres et classes de graphes reconstructibles

Résultats actuels d'une étude sérologique de quelques virus de type O apparus au Moyen-orient et en Europe

Étude de quelques méthodes de calcul du polynôme caractéristique et des valeurs propres