Issue |
Parasite
Volume 11, Number 2, June 2004
|
|
---|---|---|
Page(s) | 169 - 173 | |
DOI | https://doi.org/10.1051/parasite/2004112169 | |
Published online | 22 August 2014 |
Mémoire
Henneguya schizodon n. sp. (Myxozoa, Myxobolidae), a parasite of the Amazonian teleost fish Schizodon fasciatus (Characiformes, Anostomidae)
Henneguya schizodon n. sp. (Myxozoa, Myxobolidae) parasite du poisson téléostéen de l'Amazone Schizodon fasciatus (Characiformes, Anastomidae)
1
Departamento de Zoologia e Antropologia, and CIIMAR, Faculdade de Ciências, Universidade do Porto, 4099-002 Porto, Portugal.
2
Laboratório de Parasitologia e Patologia de Peixes, Instituto Nacional de Pesquisas da Amazonia (INPA), C.P. 478, 69011-970 Manaus, AM, Brasil.
3
Universidade Estadual de Maringá, Departamento de Biologia, NUPELIA. Av. Colombo 5790, 87020-900 Maringá, PR, Brasil.
* Correspondence : J.C. Eiras. Tel. : ++ 351 223 401 313 - Fax : ++ 351 223 401 511 E-mail : jceiras@fc.up.pt
Received:
15
September
2003
Accepted:
10
October
2003
A new histozoic species of myxosporean (Henneguya schizodon n. sp.) is described from the Amazon River teleost fish Schizodon fascialus Spix & Agassiz, 1892 (Characiformes, Anostomidae). The plasmodia, which showed asynchronous development, were located in the kidney of the host. The spore body was ellipsoidal and was 13.1 (12-14) µn long by 3.3 (3-4) µm wide. The total length of the spore was 28.9 (27-30) µm, and each valve had a caudal process measuring 16.3 (15-17) µm. The polar capsules were 5.4 (5-6) µm long by 1.3 (1-1.5) µm wide, and each had a polar filament with 8-10 coils. The characteristics of the species were compared with nearly all the species described so far, including all the species reported from South American fishes. This comparison allows to consider the material as a new species, and the name Henneguya schizodon n. sp. is proposed.
Résumé
Une nouvelle espèce de myxosporidie (Henneguya schizodon n. sp.) est décrite chez Schizodon fasciatus Spix & Agassiz, 1892 (Characiformes, Anostomidae), poisson téléostéen de l'Amazone. Les plasmodes au développement asynchrone sont localisés dans le rein de l'hôte. La spore ellipsoïde mesure 13,1 (12-14) µm de long sur 3,3 (3-4) µm de large. Sa longueur totale atteint 28,9 (27-30) µm, chaque valve étant prolongée par une expansion caudale de 16,3 (15-17) µm. Les deux capsules polaires de 5,4 (5-6) µm de long sur 1,3 (1-1,5) µm de large contiennent un filament polaire à 8-10 tours de spires. Les caractéristiques de l'espèce ont été comparées à celles de la quasi totalité des autres espèces jusqu'ici décrites dont toutes celles rapportées chez les poissons sud-américains. Cette comparaison nous autorise à considérer notre matériel comme une nouvelle espèce que nous proposons de nommer Henneguya schizodon n. sp.
Key words: Henneguya schizodon n. sp. / Myxosporea / Schizodon fascialus / fish / Amazon River / Brazil
Mots clés : Henneguya schizodon n. sp. / Myxosporea / Schizodon fasciatus / poissons / Amazone / Brésil
© PRINCEPS Editions, Paris, 2004, transferred to Société Française de Parasitologie
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