Issue |
Parasite
Volume 6, Number 4, December 1999
|
|
---|---|---|
Page(s) | 359 - 364 | |
DOI | https://doi.org/10.1051/parasite/1999064359 | |
Published online | 12 September 2014 |
Note de recherche
Fine structure of the epicytoplasmic eimerid coccidium Acroeimeria pintoi Lainson & Paperna, 1999, a gut parasite of the lizard Ameiva ameiva in North Brazil
Étude ultrastructurale de Acroeimeria pintoi lainson & Paperna, 1999, Coccidie Eimeriide épicytoplasmique, parasite intestinal du lézard Ameiva ameiva au nord du Brésil
1
Department of Animal Sciences, Faculty of Agriculture of the Hebrew University of Jerusalem, Rehovot 76-100, Israel.
2
Department of Parasitology, Institute Evandro Chagas, Caixa Postal 1128, 66090-000 Belém, Pará, Brazil.
* Correspondence : I. Paperna. Tel.: 972 8 948 1945 - Fax : 972 8 946 5763. E-mail : paperna@agri.huji.ac.il
Received:
16
July
1999
Accepted:
23
August
1999
An account is given of the fine structure of Acroeimeria pintoi, an epicytoplasmic coccidium infecting the small intestine of the teiid lizard Ameiva ameiva in north Brazil. The merozoite becomes encircled by outgrowths of the host-cell wall which then merge to form a patasitophorous sack in which the parasite continues to develop when this bulges out above the epithelium surface. The account includes a description of merozoites, young meronts and young and mature macrogamonts. The parasitophorous vacuole has a complex tubular system connected to its junction with the host-cell. The parasites are coated with a droplet-like glycocalyx and covered by a fine filamentous layer.
Résumé
L'étude ultrastructurale montre que les mérozoïtes sont encerclés par des expansions des parois de la cellule-hôte qui font saillie pour former un sac parasitophore dans lequel le parasite effectue sa croissance. Étude des mérozoïtes, des jeunes mérontes et des macrogométocytes jeunes et mûrs. La vacuole parasitophore présente un système complexe de tubules relié à sa jonction avec la cellule-hôte. Les parasites sont revêtus d'un glycocalix en forme de gouttelette et couverts par une fine membrane filamenteuse.
Key words: fine structure / epicytoplasmic development / small intestine / Acroeimeria pintoi / Coccidia / Ameiva ameiva / Brazil
Mots clés : ultrastructure / développement épicytoplasmique / petit intestin / Acroeimeria pintoi / Coccidie / Ameiva ameiva / Brésil
© PRINCEPS Editions, Paris, 1999, transferred to Société Française de Parasitologie
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