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Am. J. Trop. Med. Hyg., 10(4), 1961, pp. 551-555
Copyright © 1961 by The American Society of Tropical Medicine and Hygiene

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Experimental Attempts to Transmit Pasteurella Pestis with the Mite Haemogamasus Liponyssoides Hesperus Radovsky (Acarina: Haemogamasidae)*

D. P. Furman{dagger}, S. F. Quan{ddagger}, L. Kartman{ddagger} AND F. M. Prince{ddagger}

Haemogamasus liponyssoides hesperus Radovsky, a parasitic mite commonly taken from nests of meadow mice, was tested in the laboratory on the hypothesis that it might play a role in the maintenance of plague in nature. Techniques for forced feeding and external decontamination of the mites were developed. Mites fed well on healthy suckling mice and on heparinized blood from healthy mice, but fed poorly on suckling mice suffering a terminal bacteremia with Pasteurella pestis or on plague-bacteremic blood. Viable P. pestis were demonstrated to survive in the mites up to 23 but not to 24 hours following an infective blood meal. Bacterial culture of triturated mite suspensions proved less reliable in demonstrating the presence of viable P. pestis than did animal inoculation. Mites which had fed on an infectious blood source failed to transmit the infection by feeding upon suckling laboratory mice.

Results of the experiments do not support the hypothesis that the mite may be of significance in the maintenance of plague in nature.


* Supported in part by research grant E-1509 from the National Institute of Allergy and Infectious Diseases, National Institutes of Health, Public Health Service.


{dagger} Department of Entomology and Parasitology, University of California, Berkeley, California.


{ddagger} San Francisco Field Station, Technology Branch, Communicable Disease Center, Public Health Service, U. S. Department of Health, Education, and Welfare, San Francisco, California.






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