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The effect of changes in the osmotic pressure upon Hammerschmidtiella diesingi (Hammerschmidt, 1838) with reference to the survival of the nematode during moulting of the cockroach

Published online by Cambridge University Press:  06 April 2009

D. L. Lee
D. L. Lee
Affiliation:
Molteno Institute, University of Cambridge
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Extract

Females of Hammerschmidtiella diesingi can survive in the hind-gut of moulting Blatta orientalis. After a period of shrinkage they recover their normal length within 24 hr. in 0·2 and 0·3 m sodium chloride and in 50% sea water, but not in hypotonic media or in hypertonic sucrose. Females of H. diesingi, which have regained their original length in hypertonic media, swell when placed in normally isotonic media; a similar phenomenon occurs with nematodes taken from moulting cockroaches.

Type
Research Article
Information
Parasitology , Volume 50 , Issue 1-2 , May 1960 , pp. 241 - 246
Copyright
Copyright © Cambridge University Press 1960

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References

REFERENCES

Chitwood, B. G. (1932). A synopsis of the nematodes parasitic in insects of the family Blattidae. Z. Parasitenk. 5, 14–50.CrossRefGoogle Scholar
Hammebschmidt, K. E. (1838). Helminthologische Beiträge. Isis von Oken, 5, 351–8. Leipzig.Google Scholar
Hobson, A. D., Stephenson, W. & Beadle, L. C. (1952). Studies on the physiology of Ascaris lumbricoides. I. The relation of the total osmotic pressure, conductivity and chloride content of the body fluid to that of the external environment. J. Exp. Biol. 29, 1–21.CrossRefGoogle Scholar
Hobson, A. D., Stephenson, W. & Eden, A. (1952). Studies on the physiology of Ascaris lumbricoides. II. The inorganic composition of the body fluid in relation to that of the environment. J. Exp. Biol. 29, 22–9.CrossRefGoogle Scholar
Leidy, J. (1850). Description of nematoid entozoa infesting insects. Proc. Acad. nat. Set. Philad. 5, 100–6.Google Scholar
Mueller, J. F. (1929). Studies on the microscopical anatomy and physiology of Ascaris lumbricoides and Ascaris megalocephala. Z. Zellforsch. 8, 362–403.CrossRefGoogle Scholar
Pannikar, N. K. & Sproston, N. G. (1941). Osmotic relations of some metazoan parasites. Parasitology, 33, 214–23.CrossRefGoogle Scholar
Stephenson, W. (1942). The effect of variations in osmotic pressure upon a free-living soil nematode. Parasitology, 34, 253–65.CrossRefGoogle Scholar