Fine structure of Henneguya hemiodopsis sp. n. (Myxozoa), a parasite of the gills of the Brazilian teleostean fish Hemiodopsis microlepes (Hemiodontidae)
A fish-infecting myxosporean, Henneguya hemiodopsis sp. n., found infecting the gills of Hemiodopsis microlepis and collected from the Poty River near the city of Teresina, Brazil, was described based on ultrastructural studies. The parasite occurred within large whitish polysporic plasmodia (up to...
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Fundação Oswaldo Cruz (FIOCRUZ)
2009-11-01
|
| Series: | Memorias do Instituto Oswaldo Cruz |
| Subjects: | |
| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0074-02762009000700006 |
| _version_ | 1797756686279114752 |
|---|---|
| author | Carlos Azevedo Graça Casal Ivete Mendonça Edilson Matos |
| author_facet | Carlos Azevedo Graça Casal Ivete Mendonça Edilson Matos |
| author_sort | Carlos Azevedo |
| collection | DOAJ |
| description | A fish-infecting myxosporean, Henneguya hemiodopsis sp. n., found infecting the gills of Hemiodopsis microlepis and collected from the Poty River near the city of Teresina, Brazil, was described based on ultrastructural studies. The parasite occurred within large whitish polysporic plasmodia (up to 200 μm in diameter) containing asynchronous developmental sporogonic stages, mainly mature spores. The spores measured 19.7 ± 0.9 μm in total length (n = 30) and the ellipsoidal spore body was 10.8 ± 0.5 μm long, 3.3 ± 0.4 μm wide and 2.5 ± 0.5 μm thick. The spores were composed of two equal shell valves adhering together along the straight suture line, with each valve having equal-sized caudal tapering tails measuring 8.7 ± 0.6 μm in length. The spores were surrounded by a thin anastomosed network of microfibrils, more evident on the tails. There were two symmetric elongated bottle-like polar capsules 3.5 ± 0.3 μm long and 1.0 ± 0.2 μm wide, each with a polar filament with five to six coils. Given the morphological and ultrastructural differences from previously described parasites and the specificity of the host species, we propose a new species, named H. hemiodopsis sp. n. |
| first_indexed | 2024-03-12T18:05:05Z |
| format | Article |
| id | doaj.art-100cb9a135b14363bfb9ca1d84e7c3dd |
| institution | Directory Open Access Journal |
| issn | 0074-0276 1678-8060 |
| language | English |
| last_indexed | 2024-03-12T18:05:05Z |
| publishDate | 2009-11-01 |
| publisher | Fundação Oswaldo Cruz (FIOCRUZ) |
| record_format | Article |
| series | Memorias do Instituto Oswaldo Cruz |
| spelling | doaj.art-100cb9a135b14363bfb9ca1d84e7c3dd2023-08-02T09:28:33ZengFundação Oswaldo Cruz (FIOCRUZ)Memorias do Instituto Oswaldo Cruz0074-02761678-80602009-11-01104797597910.1590/S0074-02762009000700006Fine structure of Henneguya hemiodopsis sp. n. (Myxozoa), a parasite of the gills of the Brazilian teleostean fish Hemiodopsis microlepes (Hemiodontidae)Carlos AzevedoGraça CasalIvete MendonçaEdilson MatosA fish-infecting myxosporean, Henneguya hemiodopsis sp. n., found infecting the gills of Hemiodopsis microlepis and collected from the Poty River near the city of Teresina, Brazil, was described based on ultrastructural studies. The parasite occurred within large whitish polysporic plasmodia (up to 200 μm in diameter) containing asynchronous developmental sporogonic stages, mainly mature spores. The spores measured 19.7 ± 0.9 μm in total length (n = 30) and the ellipsoidal spore body was 10.8 ± 0.5 μm long, 3.3 ± 0.4 μm wide and 2.5 ± 0.5 μm thick. The spores were composed of two equal shell valves adhering together along the straight suture line, with each valve having equal-sized caudal tapering tails measuring 8.7 ± 0.6 μm in length. The spores were surrounded by a thin anastomosed network of microfibrils, more evident on the tails. There were two symmetric elongated bottle-like polar capsules 3.5 ± 0.3 μm long and 1.0 ± 0.2 μm wide, each with a polar filament with five to six coils. Given the morphological and ultrastructural differences from previously described parasites and the specificity of the host species, we propose a new species, named H. hemiodopsis sp. n.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0074-02762009000700006ultrastructureHenneguya hemiodopsis sp. n.MyxozoaparasitegillBrazilian fish |
| spellingShingle | Carlos Azevedo Graça Casal Ivete Mendonça Edilson Matos Fine structure of Henneguya hemiodopsis sp. n. (Myxozoa), a parasite of the gills of the Brazilian teleostean fish Hemiodopsis microlepes (Hemiodontidae) Memorias do Instituto Oswaldo Cruz ultrastructure Henneguya hemiodopsis sp. n. Myxozoa parasite gill Brazilian fish |
| title | Fine structure of Henneguya hemiodopsis sp. n. (Myxozoa), a parasite of the gills of the Brazilian teleostean fish Hemiodopsis microlepes (Hemiodontidae) |
| title_full | Fine structure of Henneguya hemiodopsis sp. n. (Myxozoa), a parasite of the gills of the Brazilian teleostean fish Hemiodopsis microlepes (Hemiodontidae) |
| title_fullStr | Fine structure of Henneguya hemiodopsis sp. n. (Myxozoa), a parasite of the gills of the Brazilian teleostean fish Hemiodopsis microlepes (Hemiodontidae) |
| title_full_unstemmed | Fine structure of Henneguya hemiodopsis sp. n. (Myxozoa), a parasite of the gills of the Brazilian teleostean fish Hemiodopsis microlepes (Hemiodontidae) |
| title_short | Fine structure of Henneguya hemiodopsis sp. n. (Myxozoa), a parasite of the gills of the Brazilian teleostean fish Hemiodopsis microlepes (Hemiodontidae) |
| title_sort | fine structure of henneguya hemiodopsis sp n myxozoa a parasite of the gills of the brazilian teleostean fish hemiodopsis microlepes hemiodontidae |
| topic | ultrastructure Henneguya hemiodopsis sp. n. Myxozoa parasite gill Brazilian fish |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0074-02762009000700006 |
| work_keys_str_mv | AT carlosazevedo finestructureofhenneguyahemiodopsisspnmyxozoaaparasiteofthegillsofthebrazilianteleosteanfishhemiodopsismicrolepeshemiodontidae AT gracacasal finestructureofhenneguyahemiodopsisspnmyxozoaaparasiteofthegillsofthebrazilianteleosteanfishhemiodopsismicrolepeshemiodontidae AT ivetemendonca finestructureofhenneguyahemiodopsisspnmyxozoaaparasiteofthegillsofthebrazilianteleosteanfishhemiodopsismicrolepeshemiodontidae AT edilsonmatos finestructureofhenneguyahemiodopsisspnmyxozoaaparasiteofthegillsofthebrazilianteleosteanfishhemiodopsismicrolepeshemiodontidae |