Rh. Neves et al., SCHISTOSOMA-MANSONI SAMBON, 1907 - MORPHOMETRIC DIFFERENCES BETWEEN ADULT WORMS FROM SYMPATRIC RODENT AND HUMAN ISOLATES, Memorias do Instituto Oswaldo Cruz, 93, 1998, pp. 309-312
A computer software for image analysis (IMAGE PRO PLUS, MEDIA CYBERNET
ICS) was utilized in male and females adult worms, aiming the morpholo
gical characterization of Schistosoma mansoni samples isolated from a
slyvatic rodent Nectomys squamipes, and humans in Sumidouro, Rio de Ja
neiro, Brazil and recovered from Mus musculus C3H/He. The following ch
aracters for males's testicular lobes were analyzed: number; area, den
sity, larger and smaller diameter longer and shorter axis and perimete
r and extension; for females: area, longer and shorter axis, larger an
d smaller diameter and perimeter of the eggs and spine; ol al and vent
ral suckers area and distance between them in both sex were determined
By the analysis of variance (one way ANOVA) significant differences (
p<0.05) were observed in all studied characters, except for the densit
y of testicular lobes. Significant differences (p<0.05) were detected
for all characters in the female worms. Data ratify that sympatric iso
lates present phenotypic differences and the adult female characters a
re useful for the proper identification of S. mansoni isolates.