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Vitellogenesis in two spathebothriidean cestodes
The ultrastructural features of vitellogenesis in spathebothriideans resemble those reported previously in “lower” cestodes, especially in pseudophyllideans. Expand
Spermiogenesis in the caryophyllidean cestode Khawia armeniaca (Cholodkovski, 1915)
Ulastructural data of spermiogenesis in K. armeniaca may support the hypothesis that the Caryophyllidea are secondarily derived from an ancestor closely allied with the Pseudophyllides and/or spathebothriideans. Expand
Spermatological characters of the caryophyllidean cestode Khawia sinensis Hsü, 1935, a carp parasite
The ultrastructural characteristics of spermiogenesis and the mature spermatozoon of K. sinensis support basal position of the Caryophyllidea (and Spathebothriidea) relative to other eucestode orders. Expand
Spermatological characters of the pseudophyllidean cestode Bothriocephalus scorpii (Müller, 1776).
The organization of the posterior extremity of the gamete with the nucleus is described for the first time in the Pseudophyllidea and appears to be a specific feature for the clade "Bothriocephalidea". Expand
Ultrastructure of the spermatozoon of the pseudophyllidean cestode Eubothrium crassum (Bloch, 1779)
The results reveal several peculiarities, in which the spermatozoon of E. crassum differs from those of other pseudophyllidean cestodes. Expand
Ultrastructure of the spermatozoon of the proteocephalidean cestode Proteocephalus torulosus (Batsch, 1786)
Abstract. The fine structure of the mature spermatozoon of the proteocephalidean tapeworm Proteocephalus torulosus, a parasite of cyprinid fishes, was studied by transmission electron microscopy forExpand
Vitellogenesis in the cestode Atractolytocestus huronensis Anthony, 1958 (Caryophyllidea: Lytocestidae)
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
Spermiogenesis in the pseudophyllid cestode Eubothrium crassum (Bloch, 1779)
Spermiogenesis of the pseudophyllidean tapeworm Eubothrium crassum has been described by the aid of transmission electron microscopy for the first time and the basal bodies with the rootlets detach from the flagella, the intercentriolar body changes its structure and spermatids are pinched off from a condensing residual cytoplasm at the level of the arching membranes. Expand
Ultrastructural features of the spermatozoon and its differentiation in Brandesia turgida (Brandes, 1888) (Digenea, Microphalloidea, Pleurogenidae)
Variations of the spermatozoa ultrastructural characters within Digenea, in particular, between different families of the superfamily Microphalloidea, are discussed. Expand
Spermatozoon ultrastructure of the pseudophyllidean cestode Paraechinophallus japonicus, a parasite of deep-sea fish Psenopsis anomala (Perciformes, Centrolophidae)
The first ultrastructural data on the spermatozoon of a pseudophyllidean cestode belonging to the family Echinophallidae, Paraechinophallus japonicus, parasitizing deep-sea fish Psenopsis anomala from Japan is provided, supporting the assumption that the order Pseudophyllides is formed in fact by two unrelated clades. Expand