The gametocytes of Plasmodium vinckei petteri, their morphological stages, periodicity and infectivity.
Gametocyte production by P. vinckei petteri was cyclic, occurring at each schizogony every 24 h. They matured in 27 h from merozoite to type 0 microgametocyte, in 3 h from type 0 to type I, 6 h from type I to type II and 3 h from type II to type III. Transmission experiments showed that the time of maximum infectivity was midday when mice were inoculated at midnight, and midnight when mice were inoculated at midday. In all instances, maximum infectivity coincided with a peak in intensity by type II microgametocytes, a relationship confirmed by multiple correspondence analysis. The proportion of type II microgametocytes was higher in the mosquitoes blood meal than in smears of tail blood of mice, suggesting a sequestration phenomenon with this stage.
Gautret
P
P
Laboratoire de Biologie Parasitaire, Helminthologie, Protistologie associé au CNRS (URA 114), Museum National d'Histoire Naturelle, Paris, France.
Gantier
J C
JC
Baccam
D
D
Miltgen
F
F
Saulai
M
M
Chabaud
A G
AG
Landau
I
I
D000818:Animals; D000852:Anopheles / Q000469:parasitology; D005260:Female; D007303:Insect Vectors / Q000469:parasitology; D008288:Malaria / Q000469:parasitology*; D008297:Male; D051379:Mice; D018512:Parasitemia / Q000469:parasitology*; D010507:Periodicity; D010961:Plasmodium / Q000254:growth & development / Q000502:physiology*