Schistosoma mansoni Sambon, 1907: comparative morphologica studies of some Brazilian strains

Revista do Instituto de Medicina Tropical de São Paulo

José Roberto Machado-silva²  Cleber Galvão¹  Regina Maria Figueiredo De Oliveira²  Octavio Augusto França Presgrave¹  Delir Corrêa Gomes¹ 

[1] ,UERJ Faculdade de Ciencias Médicas Departamento de Patologia & Laboratórios

关键词: Schistosoma mansoni;    Morphometrics;    Nectomys squamipes;    albino mouse;   

DOI  :  10.1590/S0036-46651995000500010

来源: SciELO

【 摘 要 】

The morphology of Schistosoma mansoni adult male worms from three strains which have been maintained in albino mice for several generations, was compared to a strain that has been isolated from the natural host Nectomys squamipes (Rodentia: Muridae) captured in Sumidouro (Rio de Janeiro State) and have been maintained in the same sylvatic rodent under laboratory conditions. Total length of specimens, distance between suckers, the number of testes and extention of testes grouping were the taxonomic characters analysed. The worms recovered from N. squamipes showed expressive differences (p< 0.01) compared to the other strains regarding the considered morphological characters. The strains that were maintained in mice presented statistical differences (p< 0.01) in several characters. Some adult worms besides the normal position of the testes also showed an atypical arrangement of these glands. It can be concluded that the morphology of adult worms may be used to distinguish S. mansoni strains and that morphological changes in adult worms are not induced by successive inoculations of a strain in mice.

【 授权许可】

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