Ultrastructure of the infective eggs of the hymenolepidid cestode, Ditestolepis tripartita [Zarnowski, 1955], a parasite of shrews

• Autorzy: Swiderski Z , Tkach V
• Języki publikacji: EN

Abstrakty

EN

The ultrastructure of infective eggs of the hymenolepidid cestode, Ditestolepis tripartita, a parasite of shrews, was examined with emphasis on cellular organisation of mature oncospheres. Each hexacanth larva is surrounded by three main egg envelopes: thin layer of amorphous outer envelope, relatively thick layer of inner envelope with an embryophore and a delicate oncospheral membrane. The outer and inner envelopes of infective eggs of D. tripartita are usually amorphous; the embryophore is relatively thin and moderately electron-dense. Five major types of oncospheral cells have been distinguished. These consist of: (1) about ten germinative cells; (2) about 30 somatic cells (= myocytons of somatic and hook muscles); (3) a bi-nucleate medullary centre (= tegumental perikaryon); (4) a bi-nucleate, U-shaped penetration gland and (5) two cells of neurosecretory type with characteristic dense-cored vesicles. The hook-muscle system with complex interconnections between different muscle fibers provides a structural basis for coordinated hook action.

Słowa kluczowe

EN

envelope; mature oncosphere; Ditestolepis tripartita; oncospheral membrane; cestode; egg; parasite; infective egg; muscle fibre; shrew; hymenolepidid cestode; larva; ultrastructure

• Wydawca: -
• Czasopismo: Acta Parasitologica
• Rocznik: 1997
• Tom: 42
• Numer: 1
• Opis fizyczny: p.46-54,fig.

Twórcy

autor

Swiderski Z

• W. Stefański Institute of Parasitology, Polish Academy of Sciences, Twarda 51-55, 00-818 Warsaw, Poland

autor

Tkach V

• Institute of Zoology, Ukrainian Academy of Sciences, B. Khmelnicki 15, Kiev-30, 252601, Ukraine

Bibliografia

• Chomicz L., Czubaj A. 1991. Transmission electron micrograph studies of developing oncospheral envelopes of Fimbriaria fasciolaris (Hymenolepididae). Parasitology Research, 77, 503-508.
• Chomicz L., Walski M. 1991. Ultrastructure of oncospheral envelopes of Diorchis elisae (Skrjabin, 1914) Spassky et Frese, 1961 (Cestoda, Hymenolepididae). Parasitology Research, 77, 550-552.
• Chomicz L., Swiderski Z., Czubaj A. 1995a. Ultrastructure of oncospheral envelopes in Hymenolepididae (Cestoda) with aquatic life cycle. Hydrobiologia, 305, 213-216.
• Chomicz L., Swiderski Z., Grytner-Zięcina B. 1995b. Ultrastructure of oncospheral envelopes and their differentiation in the cestode Dicranotaenia coronula (Dujardin, 1845) (Cyclophyllidea, Hymenolepididae). Acta Parasitologica, 40, 31-36.
• Collin W. K. 1968. Electron microscope studies of the muscle and hook systems of hatched oncospheres of Hymenolepis citelli McLeod, 1933 (Cestoda: Cyclophyllidea). Journal of Parasitology, 54, 74-88.
• Collin W. K. 1969. The cellular organization of hatched oncospheres of Hymenolepis citelli (Cestoda: Cyclophyllidea). Journal of Parasitology, 55, 149-166.
• Conn D. B. 1993. Ultrastructure of the gravid uterus of Hymenolepis diminuta (Platyhelminthes: Cestoda). Journal of Parasitology, 79, 583-590.
• Conn D. B., Forman L. A. 1993. Morphology and fine structure of the gravid uterus of three hymenolepidid tapeworm species (Platyhelminthes: Cestoda). Invertebrate Reproduction and Development, 23, 96-103.
• Fairweather I., Threadgold L. T. 1981a. Hymenolepis nana: The fine structure of the embryonic envelopes. Parasitology, 82, 429-443.
• Fairweather I., Threadgold L. T. 1981b. Hymenolepis nana: the fine structure of the penetration gland and nerve cells within the oncosphere. Parasitology, 82, 445-458.
• Furukawa T., Miyazato T., Okamoto K., Nakai Y. 1977. The fine structure of the hatched oncospheres of Hymenolepis nana. Japanese Journal of Parasitology, 26, 49-62.
• Jarecka L. 1961. Morphological adaptations of tapeworm eggs and their importance in the life cycles. Acta Parasitologica Polonica, 9, 409-426.
• Korneva Z. V. 1994. Cell compound and ultrastructural organisation of the coracidium of Triaenophorus nodulosus (Cestoda: Pseudophyllidea). Parazitologiya, 28, 276-282 (in Russian).
• Lethbridge R. C. 1980. The biology of the oncosphere of cyclophyllidean cestodes. Helminthological Abstracts, Serie A, 49, 59-72.
• Lethbridge R. C., Gijsbers M. F. 1974. Penetration gland secretion by hexacanths of Hymenolepis diminuta. Parasitology, 68, 303-311.
• Miyazato T., Furukawa T., Inoque M., Niwa A., Inoque T., Shimoda K. 1977. Fine structure and the mode of secretory function of the penetration glands of Hymenolepis папа oncospheres. Acta Medica of Kinki University, 2, 177-188.
• Pence D. B. 1967. The fine structure and histochemistry of the infective eggs of Dipylidium caninum. Journal of Parasitology, 53, 1041-1054.
• Pence D. В. 1970. Electron microscope and histochemical studies of the eggs of Hymenolepis diminuta. Journal of Parasitology, 56, 84-97.
• Rybicka K. 1966. Embryogenesis in cestodes. Advances in Parasitology, 4, 107-186.
• Rybicka K. 1972. Ultrastructure of embryonic envelopes and their differentiation in Hymenolepis diminuta (Cestoda). Journal of Parasitology, 58, 849-863.
• Swiderski Z. 1972. La structure fine de l’oncosphere du cestode Catenotaenia pusilla (Goeze, 1782) (Cyclophyllidea, Catenotaeniidae). La Cellule, 69, 207-237.
• Swiderski Z. 1975. Comparative fine structure of cestode embryos. Proceedings of the Second European Multicolloquium of Parasitology, September 1-6, 1975, Trogir, 265-273.
• Swiderski Z. 1976. Oncospheral hook morphogenesis in the davaineid cestode Inermicapsifer madagascariensis (Davaine, 1870) Baer, 1956. International Journal for Parasitology, 6, 495-504.
• Swiderski Z. 1981. Reproductive and developmental biology of the cestodes. In: Advances in invertebrate reproduction, (Eds. W. H. Clark, Jr. and T. S. Adams). Elsevier/North Holland, New York, Amsterdam, Oxford.
• Swiderski Z. 1982. Echinococcus granulosus: ultrastructure of the glandular regions in the infective oncospheres. In: Electron microscopy -1982, Vol. 3, (Eds. J. В. Le Poole and E. Zeitler). Proceedings of the 10th Inernational Congress on Electron Microscopy, August 17-24, 1982, Hamburg, 609-610.
• Swiderski Z. 1983. Echinococcus granulosus: hook-muscle system and cellular organisation of infective oncospheres. International Journal for Parasitology, 13, 289-299.
• Swiderski Z. 1986. Ultrastructure of the glandular regions of the infective oncospheres of the cestode Inermicapsifer madagascariensis (Cyclophyllidea, Anoplocephalidae, Inermicapsiferinae). In: Electron microscopy -1986, Vol. 3, (Eds. T. Imura et al.). Proceedings of the 12th International Congress on Electron Microscopy, Kyoto, 3333-3334.
• Swiderski Z. 1994. Echinococcus multilocularis: ultrastructure of the oncospheral nerve cells. In: Electron microscopy - 1994: ICEM 13 - Paris, Vol. 3B, (Eds. B. Jouffrey and C. Colleix). Proceedings of the 13th International Congress on Electron Microscopy, July 17-22, 1994, Paris, 1425-1426.
• Swiderski Z. 1996. Comparative studies on ultrastructure, homology and analogy of egg envelopes in trematodes and cestodes. Wiadomości Parazytologiczne, 42, 81-93.
• Swiderski Z., Tkach V. 1997. Ultrastructure of oncospheral hook formation in the nematotaeniid cestode, Nematotaenia dispar (Goeze, 1782). International Journal for Parasitology, 27, 000-000.
• Voge M., Berntzen A. K. 1961. In vitro hatching of oncospheres of Hymenolepis diminuta (Cestoda: Cyclophyllidea). Journal of Parasitology, 47, 813-818.