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The distribution of developing Brugia pahangi and Brugia malayi larvae within the dorsal longitudinal flight muscles of Aedes aegypti and Mansonia uniformis

Published online by Cambridge University Press:  06 April 2009

Evelyn B. Beckett
Evelyn B. Beckett
Affiliation:
Department of Histology, University of Liverpool
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Extract

1. The distribution of larvae within the dorsal longitudinal muscle fibre groups of A. aegypti infected with subperiodic B. malayi or B. pahangi and of M. uniformis infected with the former parasite was studied with the aid of serial sections.

2. In all experiments the top bundles of fibres contained fewer parasites than either the middle or lowest bundles, but whereas most parasites were concentrated in the middle bundles in A. aegypti there was no significant difference in M. uniformis between the bottom and middle fibre bundles. The lowermost fibre was not the most heavily parasitized of the dorsal longitudinal group.

3. Nothing is known of what determines whether or not a particular fibre becomes parasitized, but it was concluded that the distance between the fibre and the gut (from which the parasites emerge to travel to the muscle) is not the principal factor.

I am very much indebted to Mr Cheong Weng Hooi and his colleagues for collecting and processing mosquitoes in Kuala Lumpur and to Mrs J. Oliver who finished the processing in Liverpool. I am grateful also to Dr W. W. Macdonald for his advice and help in all stages of this work and to Miss M. A. Johnson who assisted with the care of the A. aegypti colony and prepared the diagrams for this paper.

Type
Research Article
Information
Parasitology , Volume 63 , Issue 1 , August 1971 , pp. 119 - 124
Copyright
Copyright © Cambridge University Press 1971

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References

Beckett, E. B. (1965). Histochemical observations on Aedes aegypti infected with larvae of Brugia malayi. Transactions of the Royal Society of Tropical Medicine and Hygiene 59, 461–71.CrossRefGoogle ScholarPubMed
Beckett, E. B. & Macdonald, W. W. (1968). The distribution pattern of indirect flight muscle fibres in Aedes aegypti (L.) (Diptera: Culicidae). Proceedings of the Royal Entomological Society of London, Series A 43, 135–9.Google Scholar
Beckett, E. B. & Macdonald, W. W. (1970). The distribution of larvae of Brugia malayi and Brugia pahangi in the flight muscle fibres of Aedes aegypti and Mansonia uniformis. Parasitology 61, 211–18.Google Scholar
Beckett, E. B. & Macdonald, W. W. (1971). The survival and development of subperiodic Brugia malayi and B. pahangi larvae in a selected strain of Aedes aegypti. Transactions of the Royal Society of Tropical Medicine and Hygiene (in the Press).Google Scholar
Macdonald, W. W. & Ramachandran, C. P. (1965). The influence of the gene ƒm (filarial susceptibility, Brugia malayi) on the susceptibility of Aedes aegypti to seven strains of Brugia, Wuchereria and Dirofilaria. Annals of Tropical Medicine and Parasitology 59, 64–73.CrossRefGoogle ScholarPubMed