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
Article
in English
| 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.
Full text:
Available
Index:
LILACS (Americas)
Main subject:
Eukaryota
/
Fishes
/
Gills
Type of study:
Risk factors
Limits:
Animals
Country/Region as subject:
South America
/
Brazil
Language:
English
Journal:
Mem. Inst. Oswaldo Cruz
Journal subject:
Tropical Medicine
/
Parasitology
Year:
2005
Type:
Article
Affiliation country:
Brazil
Institution/Affiliation country:
Ibama/BR
/
Universidade Estadual de Campinas/BR
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