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Ultrastructure of the egg shell of the acanthocephalan Neoechinorhynchus crassus

Published online by Cambridge University Press:  01 September 2007

V.P. Nikishin*
Affiliation:
Laboratory of Ecology of Helminths, Institute of the Biological Problems of the North, Russian Academy of Sciences, Portovaja Street 18, 685000 Magadan, Russia
*
*Fax: (4132) 63 44 63 E-mail:nikishin@ibpn.ru

Abstract

In the acanthocephalan Neoechinorhynchus crassus five embryonic envelopes have been identified, including four, which are similar to those in previously studied acanthocephalans and a supplementary one, located between the outer and the second envelopes, which is characteristic of only a few Eoacanthocephala. The terminology of the envelopes in relation to their origin and possible function is discussed.

Type
Research Papers
Copyright
Copyright © Cambridge University Press 2007

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References

Marchand, B. (1984a) The elaboration of the acanthor shell of Acanthosentis acanthuri (Acanthocephala). Journal of Parasitology 70, 712718.CrossRefGoogle ScholarPubMed
Marchand, B. (1984b) A comparative ultrastructural study of the shell surrounding the mature acanthor larvae of 13 acanthocephalan species. Journal of Parasitology 70, 886901.CrossRefGoogle Scholar
Nikishin, V.P. (1995) Structure and formation of embryonic envelopes in the proboscis worm Arhythmorhynchus petrochenkoi. Parazitologiya 29, 398403(in Russian).Google Scholar
Nikishin, V.P. (2001) Structure and formation of embryonic envelopes in acanthocephalans. Biology Bulletin 28, 4762.CrossRefGoogle Scholar
Oetinger, D.F. & Nickol, B.B. (1974) A possible function of the fibrillar coat in Acanthocephalus jacksoni eggs. Journal of Parasitology 60, 10551056.CrossRefGoogle ScholarPubMed
Peters, W., Taraschewski, H. & Latka, I. (1991) Comparative investigations of the morphology and chemical composition of the eggshells of Acanthocephala. I. Macracanthorhynchus hirudinaceus (Archiacanthocephala). Parasitology Research 77, 542549.CrossRefGoogle ScholarPubMed
Stranack, F.R. (1972) The fine structure of the acanthor shell of Pomphorhynchus laevis (Acanthocephala). Parasitology 64, 187190.CrossRefGoogle ScholarPubMed
Taraschewski, H. (2000) Host–parasite interactions in Acanthocephala: a morphological approach. Advances in Parasitology 46, 1179.CrossRefGoogle ScholarPubMed
Taraschewski, H., Peters, W. & Latka, I. (1992) Comparative investigations of the morphology and chemical composition of the eggshells of Acanthocephala. III. Eoacanthocephala. Parasitology Research 78, 382387.CrossRefGoogle ScholarPubMed
Uznanski, R.L. & Nickol, B.B. (1976) Structure and function of the fibrillar coat of Leptorhynchoides thecatus eggs. Journal of Parasitology 62, 569573.CrossRefGoogle ScholarPubMed
Whitfield, P.J. (1973) The egg envelopes of Polymorphus minutus (Acanthocephala). Parasitology 66, 387403.CrossRefGoogle ScholarPubMed
Wongkham, W. & Whitfield, P.J. (2004) Pallisentis rexus from the Chiang Mai Basin, Thailand: ultrastructural studies on egg envelope development and the mechanism of egg expansion. Journal of Helminthology 78, 7785.CrossRefGoogle Scholar