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The transmission of an avian filarioid Cardiofilaria nilesi to the jird, Meriones unguiculatus

Published online by Cambridge University Press:  05 June 2009

G. L. Chiang ,
W. H. Cheong ,
K. L. Eng  and
W. A. Samarawickrema
G. L. Chiang
Affiliation:
Division of Medical Entomology, Institute for Medical Research, Kuala Lumpur, Malaysia
W. H. Cheong
Affiliation:
Division of Medical Entomology, Institute for Medical Research, Kuala Lumpur, Malaysia
K. L. Eng
Affiliation:
Division of Medical Entomology, Institute for Medical Research, Kuala Lumpur, Malaysia
W. A. Samarawickrema
Affiliation:
Division of Medical Entomology, Institute for Medical Research, Kuala Lumpur, Malaysia
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Abstract

This paper reports the experimental transmission of a bird parasite into jirds. Infective larvae of Cardiofilaria nilesi obtained from laboratory colonized Coquillettidia crassipes mosquitoes which had fed on an infected chicken were inoculated subcutaneously into jirds. The number of larvae per jird varied from 10 to 228. Microfilaraemia appeared 22 to 89 days after inoculation of the infective larvae. Experiments were carried out with 24 jirds through six generations extending over a period of 22 months and 17 produced patent infections. At present 8 infected jirds are being maintained in the laboratory; their patent periods ranging from 6 to 13 months. However, the longest patent period observed was about thirteen months. The percentage of adults recovered in autopsied jirds ranged from 0 to 40 with an average of 16. The chicken showed a microfilarial periodicity with the peak microfilarial density around 2200 hours. However, in jirds there was a change in sub-periodicity. This model in the jird may be very useful for the screening of filaricides and in immunological work.

Keywords

Cardiofilaria nilesiMeriones unguiculatustransmission
Type
Research Papers
Information
Journal of Helminthology , Volume 61 , Issue 4 , December 1987 , pp. 349 - 353
Copyright
Copyright © Cambridge University Press 1987

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