[Morphology of the teguments of Schistosoma haematobium; comparison with S. curassoni, S. bovis and S. intercalatum].
Study by SEM of the anterior dorsal teguments of male Schistosoma haematobium from infected rodents. Only paired males, at least hundred days post infection, display a typical morphology. Differentiation from other closely related species obtained experimentally from rodents is possible: bovis: no spines on the tubercles; haematobium: tubercles 10 to 15 microns wide with closely packed spines; curassoni: tubercles over 15 microns wide, with large, closely packed spines; intercalatum: tubercles under 10 microns wide, with scattered spines. It is suggested that the three haematobium genotypes A, B and D are slightly different: A: pointed spines, numerous small additional spines between the tubercles; B: pointed spines, no small additional spines between the tubercles; D: blunt spines. Moreover, the lengths of the prepatent periods in the molluscs of the three S. haematobium genotypes are possibly different: A 72-86 days, B 38-46 days, D 55-58 days. The differentiation of A, B and D is supported by limited data and conclusions on this particular aspect are presented only as a working hypothesis.
Ngendahayo
L D
LD
Laboratoire de Zoologie (Vers), Muséum National d'Histoire Naturelle, Paris.
Bayssade-Dufour
C
C
Albaret
J L
JL
Picot
H
H
Diaw
O T
OT
Vassiliades
G
G
Ross
G C
GC
Southgate
V R
VR
Luffau
G
G
Chabaud
A G
AG
D000818:Animals; D008297:Male; D008855:Microscopy, Electron, Scanning; D012547:Schistosoma / Q000648:ultrastructure*; D012548:Schistosoma haematobium / Q000648:ultrastructure*; D013045:Species Specificity
Morphologie des téguments de Schistosoma haematobium; comparison avec S. curassoni, S. bovis et S. intercalatum.