Laboratory investigations into the role of Musca vicina and Musca domestica in the transmission of parasitic helminth eggs and larvae

Dipeolu, O.O.

International Journal of Zoonoses 9(1): 57-61


ISSN/ISBN: 0377-0168
PMID: 6890949
Accession: 000919606

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Adults of Musca domestica L. (including its synonym M. vicina Macq.) were induced to feed in the laboratory on human excreta containing eggs of hook worm and Ascaris lumbricoides, and on infective larvae of the parasites. The developmental periods of the regurgitated eggs were observed, and attempts were made to recover the ingested larvae through regurgitation. There were no differences between the developmental times of eggs recovered from the flies 2 h after ingestion and those that were not fed to flies. In the case of hookworm larvae, nearly all the treated flies regurgitated infective larvae up to 8 h after ingestion; the numbers of flies with this ability dropped drastically from the 9th hour. The number of larvae decreased steadily from the 5th hour and had almost ceased by the 9th hour. Such decreases were not experienced in the case of infective larvae of A. lumbricoides regurgitated.