Effects of temperature on the in vivo and in vitro multiplication of Trypanosoma danilewskyi Laveran et Mesnil
Islam, A.K.; Woo, P.T.
Folia Parasitologica 39(1): 1-12
1992
ISSN/ISBN: 0015-5683 PMID: 1644346 Document Number: 397224
Temperature directly affected the in vivo and in vitro multiplication of T. danilewskyi. The parasitaemia in experimentally infected goldfish (Carassius auratus L.) increased rapidly at 20 degrees C and reached its peak in 3 to 5 weeks pi. The multiplication was slower at 10 degrees C. The parasitaemia declined after the peak at 20 degrees C. Lowering of temperature of the infected goldfish from 20 degrees C to 10 degrees C slowed multiplication of the parasite. Similarly, raising of temperature of infected fish from 10 degrees C to 20 degrees C resulted in rapid multiplication of the parasite. These were confirmed in the in vitro studies. It is suggested that lower temperature slows the multiplication of the parasites because T. danilewskyi is a parasite of a warm water host (Carassius auratus gibelio).