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The effect of constant and changing temperatures on the development of the eggs and larvae of Oswaldocruzia filiformis (Nematoda: Trichostrongyloidea)

Published online by Cambridge University Press:  05 June 2009

Christine T. Griffin
Christine T. Griffin
Affiliation:
Zoology Department, Trinity College, Dublin 2, Ireland
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Abstract

The free-living stages of Oswaldocruzia filiformis were cultured in tapwater under constant and changing temperature regimes. Embryonation and hatching proceeded at constant temperatures from 6° to 32°C; development of larvae to the third (infective) stage occurred between 6° and 34°C. The duration of development decreased with increased temperatures up to 28°C. The duration of development of egg and larval stages under changing temperatures was compared with values predicted from constant temperature experiments. The rate of development of eggs to hatching was significantly accelerated under regimes of both sudden and gradual temperature changes. The effect of fluctuating temperatures on larval development was less consistent; both acceleration and retardation effects were recorded. Frog tadpoles (Rana temporaria) were experimentally infected with O. filiformis; early parasitic development proceeded significantly faster at room temperature than at 9–10°C.

Keywords

Oswaldocruzia filiformistemperaturedevelopmenteggslarvae
Type
Research Papers
Information
Journal of Helminthology , Volume 62 , Issue 4 , December 1988 , pp. 281 - 292
Copyright
Copyright © Cambridge University Press 1988

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