Vitellogenesis in two spathebothriidean cestodes

@article{Bruansk2005VitellogenesisIT,
  title={Vitellogenesis in two spathebothriidean cestodes},
  author={M. Bruňansk{\'a} and L. Poddubnaya and B. Dezfuli},
  journal={Parasitology Research},
  year={2005},
  volume={96},
  pages={390-397}
}
Vitellogenesis in two spathebothriidean tapeworms, dixenous adult Cyathocephalus truncatus and monoxenous progenetic Diplocotyle olrikii, has been examined using transmission electron microscopy and cytochemical staining with periodic acid-thiosemicarbazide-silver proteinate for glycogen. Each vitelline follicle consists of vitellocytes at various stages of development and one irregularly shaped interstitial cell. Projections of the interstitial cell enclose the vitellocytes and extend as a… Expand
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It was found that formation of vitellocytes shares the same basic patterns in lower tapeworms with parthenogenetic and normal reproduction as well as in other caryophyllideans and/or Neodermata. Expand
Ultrastructural and cytochemical studies on vitellogenesis in trypanorhynch cestode Dollfusiella spinulifera Beveridge, Neifar et Euzet, 2004 (Eutetrarhynchidae)
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Some working hypotheses concerning the interrelationship between this particular pattern of vitellogensis, possible mode of egg formation in D. spinulifera, its embryonic development and trypanorhynchean life cycle, are drawn and discussed. Expand
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TLDR
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TLDR
Results of the present study indicate that the formation of lamellar bodies may be closely related to the endoplasmic reticulum or shell globule clusters. Expand
Ultrastructure of vitellocytes in the cestode Progrillotia pastinacae Dollfus, 1946 (Trypanorhyncha, Progrillotiidae)
TLDR
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Vitellogenesis of diphyllobothriidean cestodes (Platyhelminthes).
TLDR
Variations of vitelline clusters morphology and types of lipid droplets are described and discussed in relation to the presumed evolutionary history of diphyllobothriideans, which belong to the most basal cestode groups. Expand
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References

SHOWING 1-10 OF 32 REFERENCES
Vitelline cell development in monogenean parasites
TLDR
Histochemical and electron microscopic studies of the vitellaria of three polyopisthocotylean fish-gill flukes, Diplozoon paradoxum, Diclidophora merlangi and Calicotyle kröyeri have shown that, in each case, viteLLine cell development is basically similar. Expand
[Vitellogenesis in Echeneibothrium beauchampi Euzet, 1959 (Cestoda: Tetraphyllidea, Phyllobothriidae) (author's transl)].
TLDR
The presence of numerous lipid droplets and glycogen in the vitelline cells of E. beauchampi shows evidence that this Tetraphyllidea is close to Pseudophyllidea, but the aspect of protein vesicles (shell-protein material) brings it near the Cyclophyllides. Expand
Étude de la vitellogénèse de Bothriocephalus clavibothrium Ariola, 1899 (Cestoda: Pseudophyllidea)
TLDR
The vitellogenesis in Bothriocephalus clavibothrium was studied by means of histochemistry and electron microscopy methods and the rôle of those products synthesized and accumulated by viteLLine cells is discussed. Expand
Ultrastructural studies on the reproductive system of Gyrocotylidea and Amphilinidea (Cestoda)
TLDR
The morphology and function of vitelloducts and other genital ducts in Neodermata are discussed and the occurrence of syncytial epithelia in genitals ducts is considered to be an autapomorphy of Cestoda. Expand
Electron microscope study of vitellogenesis in Glaridacris catostomi (Cestoidea: Caryophyllidea).
TLDR
The functional significance of the large amount of nuclear and cytoplasmic glycogen and numerous shell globule clusters is analyzed and some conclusions, concerning the interrelationship between the vitellogenesis pattern and the type of embryogenesis following it, are drawn. Expand
Ultrastructural studies on the reproductive system of Gyrocotylidea and Amphilinidea (Cestoda)
TLDR
Vitellogenesis and the vitelloduct morphology of Gyrocotyle are compared with those of other parasitic Plathelminthes and numerous dictyosomes, endoplasmic reticulum, egg-shell granules and lipid droplets are formed. Expand
Ultrastructure of the vitelline follicles of Gorgoderina vitelliloba (Trematoda: Gorgoderidae).
TLDR
It is suggested that nurse cells may have a role in selection and transport of nutrient material for vitelline cells and that they manufacture precursors of lipid which is subsequently stored as a food reserve in mature viteLLine cells. Expand
Ultrastructure of Archigetes sieboldi (Cestoda: Caryophyllidea): relationship between progenesis, development and evolution.
TLDR
It is demonstrated that progenetic Archigetes sieboldi shares characteristics of both larval (progenetic) and adult stages and it is postulated that a similar process of progenesis may have played a major role in the early evolution of the Caryophyllidea by first appearing in a plerocercoid stage of an ancestral strobilate cestode from fish. Expand
Fine structure of the female reproductive ducts of Cyathocephalus truncatus (Cestoda: Spathebothriidea), from salmonid fish.
TLDR
Emphasis was given to characteristics which might shed light on the unclarified phylogenetic position of spathebothriideans, belonging among the most basal tapeworms (Eucestoda), but on the basis of available ultrastructural data it is not possible to conclude whether the Spathe bothriidea are phylogenetically closer to the Caryophyllidea or to the Pseudophyllides. Expand
Vitellocytes and vitellogenesis in cestodes in relation to embryonic development, egg production and life cycle.
TLDR
A comparison of interrelationships which exist among types of viteLLocytes, vitellogenesis, types of embryonic development, ovoviviparity and life cycles indicates parallelisms and analogies in adaptation to the parasitic way of life in different groups of cestodes. Expand
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