Your browser doesn't support javascript.
loading
Morphological and ultrastructural redescription of Calyptospora serrasalmi Cheung, Nicrelli & Ruggieri, 1986 (Apicomplexa: Calyptosporidae), a parasite found in two new host species of the genus Serrasalmus
Casal, Graça; Padovan, Isaíras; Matos, Edilson; Padovan, Paulo; Matos, Patrícia; Guimarães, Ariene; Azevedo, Carlos.
Affiliation
  • Casal, Graça; University of Porto. Institute of Biomedical Sciences. Department of Cell Biology. Porto. PT
  • Padovan, Isaíras; Federal University of Pernambuco. Center of Biological Sciences. Laboratory of Histology and Embryology. Recife. BR
  • Matos, Edilson; Federal Rural University of Amazônia. Carlos Azevedo Research Laboratory. Belém. BR
  • Padovan, Paulo; Federal University of Pernambuco. Center of Biological Sciences. Laboratory of Histology and Embryology. Recife. BR
  • Matos, Patrícia; Federal University of Pará. Center of Biological Sciences. Belém. BR
  • Guimarães, Ariene; Federal University of Pernambuco. Center of Biological Sciences. Laboratory of Histology and Embryology. Recife. BR
  • Azevedo, Carlos; University of Porto. Institute of Biomedical Sciences. Department of Cell Biology. Porto. PT
Braz. j. morphol. sci ; 24(1): 11-16, jan.-mar. 2007. ilus, tab
Article in En | LILACS | ID: lil-497614
Responsible library: BR734.1
ABSTRACT
Coccidians are pathogenic protoparasites found in various fish species. In this report, we used light and electron microscopy to study the morphological and ultrastructural features of Calyptospora serrasalmi, a coccidian parasite found to parasitize two additional species of the teleostean genus Serrasalmus, S. striolatus and S. rhombeus, from the Amazon river and the lagoonal region of Recife, Brazil, respectively. Infection involved only the liver parenchyma, with the coccidians occurring as isolated oocysts or in clusters of up to 40-50 oocysts encapsulated by a layer of connective tissue. Several life cycle stages were observed in the same section, with oocysts being the most evident. Each spherical oocyst (~25.5 um in diameter) contained four sporocysts, each surrounded by a thin membranous veil. The sporocysts were pear-shaped (11.8x6.0 um) with an attached apical sporopodium that had several small lateral projections (up to 0.5 um long). These small projections were formed by the same material as the sporocyst wall and were distributed over the basal portion of the wall in 10-12 longitudinal series. The sporocysts lacked a Stieda body and contained two vermiform sporozoites. Calyptospora serrasalmi was distinguishable from previously described species on the basis of sporocyst morphology.
Subject(s)
Search on Google
Index: LILACS Main subject: Coccidia / Fish Diseases / Fishes Limits: Animals Language: En Journal: Braz. j. morphol. sci Journal subject: ANATOMIA Year: 2007 Type: Article
Search on Google
Index: LILACS Main subject: Coccidia / Fish Diseases / Fishes Limits: Animals Language: En Journal: Braz. j. morphol. sci Journal subject: ANATOMIA Year: 2007 Type: Article