Issue |
Parasite
Volume 7, Number 4, December 2000
|
|
---|---|---|
Page(s) | 263 - 274 | |
DOI | https://doi.org/10.1051/parasite/2000074263 | |
Published online | 02 September 2014 |
Mémoire
The life-cycle and ultrastructure of Sarcocystis ameivamastigodryasi n. sp., in the lizard Ameiva ameiva (Teiidae) and the snake Mastigodryas bifossatus (Colubridae)(1)
Cycle et ultrastructure de Sarcocystis ameivamastigodryasi n. sp. chez le lézard Ameiva ameiva (Teiidae) et le serpent Mastigodryas bifossatus (Colubridae)
1
Department of Parasitology, Instituto Evandro Chagas, Avenida Almirante Barroso 492, 66090-000 Belém, Pará, Brazil.
2
Department of Animal Sciences, Faculty of Agriculture of the Hebrew University of Jerusalem, Rehovot 76-100, Israel.
* Correspondence: R. Lainson. Tel.(55.91) 223 2382 (55.91) 211 4453 Fax:(5 5.91) 223 2382 (55.91) 226 1284 E-mail:
Received:
11
September
2000
Accepted:
21
September
2000
Sarcocysts in muscles of the teiid lizard Ameiva ameivafrom north Brazil were fed to the colubrid snake Mastigodryas bifossatus, the faeces of which had been shown to be devoid of coccidial oocysts or sporocysts. When necropsied 16 days later the snake was shown to have developed a massive intestinal infection of Sarcocystis. Mature sporocysts from another, naturally infected M. bifossatus were fed to juvenile specimens of A. ameiva in which no sarcocysts could be detected in tail muscle biopsies. When examined 30 and 47 days later they had very large numbers of sarcocysts in their tail and tongue muscles. The parasite is given the name of Sarcocystis ameivamastigodryasi n. sp. An ultrastructural study has been made of the sarcocyst and of the parasite's sporulation in the lamina propria of the snake: the latter provides details of the wall formation process in developing sporocysts. Attempts to infect a specimen of the boid Boa constrictor constrictor by feeding it with infected Ameivafailed, suggesting that sporocysts previously recorded in genera of the family Boidae may be those of a different species of Sarcocystis.
Résumé
Des muscles de lézard Ameiva ameiva du nord du Brésil, infestés par des sarcocystes ont été donnés en nourriture à un serpent Mastigodryas bifossatus dont les fèces ne présentaient ni oocystes ni sporocystes de coccidie. Une nécropsie réalisée 16 jours plus tard a révélé une infection intestinale massive à Sarcocystisde ce serpent. Des sporocystes matures d'un autre M. bifossatusnaturellement infecté ont été donnés en nourriture à de jeunes A. ameivachez lesquels aucun sarcocyste n'avait été détecté par biopsie au niveau de la queue. Examinés 30 et 47 jours plus tard, ceux-ci présentaient de nombreux sarcocystes au niveau des muscles de la queue et de la langue. Le parasite est nommé Sarcocystis ameivamastigodryasi n. sp. Une étude ultrastructurale du sarcocyste et de la sporulation au niveau de la lamina propria a été réalisée. Des tentatives d'infestation d'un boa -Boa constrictor constrictor -ont toutes échoué, ce qui laisse supposer que les sporocystes précédemment décrits chez ce serpent sont d'un genre de Sarcocystis différent.
Key words: Sarcocystis ameivamastigodryasi n. sp. / Ameiva ameiva / Kentropyx calcarata / lizards / Mastigodryas bifossatus / Mastigodryas boddaerti / Epicrates c. cenchria / Boa c. constrictor / snakes / transmission / Brazil
Mots clés : Sarcocystis ameivamastigodryasi n. sp. / Ameiva ameiva / Kentropyx calcarata / lézards / Mastigodryas bifossatus / Mastigodryas boddaerti / Epicrates c.cenchria / Boa c.constrictor / serpents / transmission / Brésil
© PRINCEPS Editions, Paris, 2000, transferred to Société Française de Parasitologie
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