Histophatology and ultrastructure of Henneguya caudalongula sp. n. infecting Prochilodus lineatus (Pisces: Prochilodontidae) cultivated in the state of São Paulo, Brazil
Mem. Inst. Oswaldo Cruz
;
100(2): 177-181, Apr. 2005. ilus, tab
Artículo
en Inglés
| LILACS
| ID: lil-410856
ABSTRACT
The histological and ultrastructural characteristics of a new species of Henneguya and the host reactions to infection by this species are reported. Henneguya caudalongula sp. n. was found in the inter and intralamellar regions of the gills of Prochilodus lineatus (Valenciennes, 1836) cultivated at Center for the Research and Management of Continental Fishing Resources located in the municipality of Pirassununga, state of São Paulo, Brazil. The plasmodia were white and round or ellipsoidal and measured 0.2 to 1 mm in length. The development of the parasite was asynchronous and the mature spores were fusiform, with a total length 71 ± 1.4 æm, body length of 16.6 ± 0.54 æm and width 4.6 ± 0.2 æm. The caudal process was 52.6 ± 1.5 æm long. The polar capsules were elongate (length 6.1 ± 0.19 æm, width 1.6 ± 0.15 æm) and of equal size. The polar filament was coiled in 10-11 turns. The prevalence of the parasite was 48.3 percent and did not vary significantly with the season or host size.
Texto completo:
Disponible
Índice:
LILACS (Américas)
Asunto principal:
Eucariontes
/
Peces
/
Branquias
Tipo de estudio:
Factores de riesgo
Límite:
Animales
País/Región como asunto:
America del Sur
/
Brasil
Idioma:
Inglés
Revista:
Mem. Inst. Oswaldo Cruz
Asunto de la revista:
Medicina Tropical
/
Parasitología
Año:
2005
Tipo del documento:
Artículo
País de afiliación:
Brasil
Institución/País de afiliación:
Ibama/BR
/
Universidade Estadual de Campinas/BR
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