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Topography and ultrastructure of the tegument of Aphallus tubarium (Rodolphi, 1819) Poche, 1926 (Digenea: Cryptogonimidae), intestinal parasite of the common Dentex dentex (Linnaeus 1758) from Valinco Gulf

100%

Antonelli L., Quilichini Y., Foata J., Marchand B.

Acta Parasitologica

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2014

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tom 59

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nr 4

The tegument ultrastructure of the intestinal fluke Aphallus tubarium was studied for the first time with the use of scanning and transmission electron microscopy. New details on morphology were recorded. The ultrastructural study revealed that the tegument of A. tubarium had a syncytial organization with a distal cytoplasm lying over a basal matrix and cytons. The surface of the tegument is covered with pectinate spines arranged quincuncially. As anterior-posterior differences were observed, particular attention was given to spines. Spines decrease in size and density from the anterior part of body to posterior part. Two types of sensory structures were identified, uniciliated and dome-shaped. Type 1 sensory receptors were outgrowths bearing groups of papillae with shorter and rigid apical seta visible on the anterior part of body surface, encircling the worm. Type 2 sensory receptors was dome-shaped papillae devoid of cilia, found mainly around the oral sucker. Diagrams of spines and sensory receptors were made to help in understanding the nature of these structures. Surface morphology may prove to be useful in distinguishing Aphallus spp with other Cryptogonimidae.

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Ultrastructure of the spermatozoon of Calliobothrium verticillatum [Cestoda, Tetraphyllidea, Oncobothriidae]

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Quilichini Y., Foata J., Ba C. T., Marchand B.

Acta Parasitologica

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2007

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tom 52

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nr 3

The ultrastructure of the spermatozoon of Calliobothrium verticillatum (Cestoda, Tetraphyllidea, Oncobothriidae) parasite of the smoothhound shark, Mustelus mustelus L. (Pisces, Carcharhiniformes), was studied by transmission electron microscopy. This spermatozoon presents five regions characterized by several ultrastructural elements: an apical cone, a crested body, two axonemes of 9 + “1” pattern, electron-dense granules, a nucleus and cortical microtubules. In the present study, three of these features were the subject of a detailed attention. The first is the presence of two axonemes, which confirms that the Tetraphyllidea, Oncobothriidae possess two axonemes whereas the Tetraphyllidea, Phyllobothriidae possess only one axoneme. The second is the presence of one crested body, a criterion homogeneous in the Tetraphyllidea but heterogeneous among the different orders of Cestoda. The third is the number and the disposition of cortical microtubules. These three criteria seem to be interesting for phylogeny.

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Helminth fauna of wild boar in Corsica

100%

Foata J., Culioli J. L., Marchand B.

Acta Parasitologica

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2005

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tom 50

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nr 2

To determine the helminth fauna of wild boars, 160 stomachs and intestines, 72 lungs and 58 livers of animals from eight areas in Corsica, have been examined. It is the first study made in this Mediterranean island. The evaluation of the helminthic composition revealed six following species: Dicrocoelium dendriticum (Rudolphi, 1819), larval stage of Echinococcus granulosus (Goeze, 1782), Ascaris suum (Goeze, 1782), Metastrongylus sp., Globocephalus urosubulatus (Alessandrini, 1909), Macracanthorhynchus hirudinaceus (Pallas, 1781). Differences among prevalence data indicated an overdispersed helminth distribution in Corsica.

Ograniczanie wyników

3 Acta Parasitologica

3 Foata J.

3 Marchand B.

2 Quilichini Y.

1 Antonelli L.

1 Ba C. T.

1 Culioli J. L.

1 2014

1 2007

1 2005

Topography and ultrastructure of the tegument of Aphallus tubarium (Rodolphi, 1819) Poche, 1926 (Digenea: Cryptogonimidae), intestinal parasite of the common Dentex dentex (Linnaeus 1758) from Valinco Gulf

Ultrastructure of the spermatozoon of Calliobothrium verticillatum [Cestoda, Tetraphyllidea, Oncobothriidae]

Helminth fauna of wild boar in Corsica