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The asexual and sexual circadian rhythms of Plasmodium vinckei chabaudi, of P. berghei and of P. gallinaceum

Published online by Cambridge University Press:  06 April 2009

Frank Hawking ,
Kenneth Gammage  and
Michael J. Worms
Frank Hawking
Affiliation:
The National Institute for Medical Research, London NW7 1AA
Kenneth Gammage
Affiliation:
The National Institute for Medical Research, London NW7 1AA
Michael J. Worms
Affiliation:
The National Institute for Medical Research, London NW7 1AA
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Extract

Plasmodium vinckei chabaudi (which has a 24 h cycle with high synchronicity) has a peak of schizogony in the early morning at about 02.00–04.00. This cycle is orientated to the cycle of the host (mouse or thamnomys). The male gametocytes become ripe for exflagellation in a well-marked wave from 22.00 to 08.00 with peak about 00.00–04.00. This timing presumably corresponds to the hours when the vector mosquitoes are most likely to suck blood, and it is adapted to facilitate transmission. The male gametocytes remain ripe for exflagellation for a mean period of about 6 h and then apparently degenerate.

Type
Research Article
Information
Parasitology , Volume 65 , Issue 2 , October 1972 , pp. 189 - 201
Copyright
Copyright © Cambridge University Press 1972

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