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Are there Host Strains within the Species of Syngamus trachea?

Published online by Cambridge University Press:  05 June 2009

Phyllis A. Clapham
Phyllis A. Clapham
Affiliation:
(Research Assistant, Institute of Agricultural Parasitology, St. Albans.)
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Extract

In 1928 Taylor put forward the theory that “…Syngamus trachea is a species within which there may be found a number of strains showing a peculiar physiological adaptation to the host in which they occur.” He had not had much success in a number of experiments in which he had tried to infect chickens with S. trachea from starlings. The first experimental feedings resulted in only light infections though control experiments with the chicken “strain” resulted in much heavier ones. After the first passage through the chicken however, the gapeworms had become more adapted to the new host, and could produce much more serious infections in the next generation.

Type
Research Article
Information
Journal of Helminthology , Volume 16 , Issue 1 , February 1938 , pp. 49 - 52
Copyright
Copyright © Cambridge University Press 1938

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References

REFERENCES

Campbell, J. W., 1935.—“The Gapeworm (Syngamus) in Wild Birds.” J. Anim. Ecol., IV (2), 208–215. (W.L. 11027a.)Google Scholar
Clapham, P. A., 1934.—“Experimental Studies on the Transmission of Gapeworm (Syngamus trachea) by Earthworms.” Proc. roy. Soc., B., CXV, 18–28. (W.L. 16900.)Google Scholar
Clapham, P. A., 1935.—“On the experimental Transmission of Syngamus trachea from Starlings to chickens.” J. Helminth., XIII (1), 1–2. (W.L. 11224b.)Google Scholar
Taylor, E. L., 1928.—“Syngamus trachea from the Starling transferred to the chicken, and some physiological variation observed.” Ann. trop. Med. Parasit., XXII (3), 307–318. (W.L. 1063.)CrossRefGoogle Scholar
Taylor, E. L., 1935.—“Syngamus trachea. The longevity of the infective larvae in the Earthworm. Snails and slugs as Intermediate Hosts.” J. comp. Path., XLVIII (2). 149–156. (W.L. 11136.)Google Scholar