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A reassessment of the variations in the water content of the larvae of Nematodirus battus during the hatching process

Published online by Cambridge University Press:  06 April 2009

R. N. Perry
R. N. Perry
Affiliation:
Department of biology, The university, Keele, Staffordshire
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Extract

Parkin (1975) considered that the water content of the unhatched 3rd-stage larva of Nematodirus battus increased as it approached hatching, and then fell immediately after the larva escaped from the egg-shell, to the very low value for estimated water content for hydrated individuals of 43·7%. A repetition of this work suggests that these results are in error. Prior to hatching, the water content of larvae remained constant; after hatching there was a marked increase in water content to an estimated value for fully hydrated individuals of 74·5%, a value more in keeping with other findings.

Type
Research Article
Information
Parasitology , Volume 74 , Issue 2 , April 1977 , pp. 133 - 137
Copyright
Copyright © Cambridge University Press 1977

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References

Ellenby, C. (1968 a). Determination of the water content of nematode worms by interference microscopy. Expericentia 24, 84–5.CrossRefGoogle ScholarPubMed
Ellenby, C. (1968 b). Desiccation survival in the plant parasitic nematodes, Heterodera rostochiensis Wollenweber and Ditylenchus dipsaci (Kühn). Proceedings of the Royal Society of London B 169, 203–13.Google Scholar
Ellenby, C. (1968 c). Desiccation survival of the infective larva of Haemonchus contortus. Journal of Experimental Biology 40, 469–75.CrossRefGoogle Scholar
Ellenby, C. (1974). Water uptake and hatching in the potato-cyst nematode, Heterodera rostochiensis, and the root knot nematode Meloidogyne incognita. Journal of Experimental Biology 61, 773–9.CrossRefGoogle ScholarPubMed
Ellenby, C. & Perry, R. N. (1976). The influence of the hatching factor on the water uptake of the second stage larva of the potato-cyst nematode Heterodera rostochiensis. Journal of Experimental Biology 64, 141–7.CrossRefGoogle Scholar
Parkin, J. T. (1975). Variations in the water content of the larvae of Nematodirus battus during the hatching process. Parasitology 70, 157–63.CrossRefGoogle ScholarPubMed
Perry, R. N. (1975). Deseccation survival of Ditylenchus dipsaci (Kϋhn, 1857 ) Filipjev, 1936 and D. myceliophagus J. B. Goodey, 1958. Ph.d. thesis, University of Newcastle upon Tyne.Google Scholar
Perry, R.N. (1977). The water dynamics of stages of Ditylenchus dipsaci and D. myceliophagus during desiccation and rehydration. Parasitology 75 (in the Press).Google Scholar
Ross, K. F. A. (1967). Phase Contrast and Interference Microscopy for Cell Biologists, pp. 238. London: Edward Arnold.Google Scholar
Steel, R. G. D. & Torrie, J. H. (1960). Principles and Procedures of Statistics, pp. 481. New York: McGraw-Hill.Google Scholar