Henneguya cuniculator sp nov., a parasite of spotted sorubim Pseudoplatystoma corruscans in the Sao Francisco Basin, Brazil

Henneguya cuniculator sp nov., a parasite of spotted sorubim Pseudoplatystoma corruscans in the Sao Francisco Basin, Brazil

Autor Naldoni, Juliana Google Scholar
Maia, Antonio Augusto Mendes Google Scholar
Silva, Marcia Ramos Monteiro da Google Scholar
Adriano, Edson Aparecido Autor UNIFESP Google Scholar
Instituição Universidade Estadual de Campinas (UNICAMP)
Universidade de São Paulo (USP)
Universidade Federal de São Paulo (UNIFESP)
Resumo Henneguya cuniculator sp. nov. was found infecting spotted sorubim catfish Pseudoplatystoma corruscans from the Sao Francisco River, Minas Gerais, Brazil. the parasites form elongated plasmodia of up to 1 cm in length in the gill filaments. Mature spores were ellipsoidal from the frontal view, with total length of 29.4 +/- 2.4 (mean +/- SD, range 23.3-32.4) mu m, body length of 12.1 +/- 1.0 (10.0-14.7) mu m, width of 4.8 +/- 0.4 (4.0-5.9) mu m, and tail length of 16.7 +/- 2.0 (12.3-19.4) mu m. From the lateral view, spores were biconvex, with thickness of 4.2 +/- 0.7 (3.9-4.9) mu m. the polar capsules were elongated and equal in size, 6.2 +/- 0.3 (5.2-6.2) mu m in length, and 1.8 +/- 0.1 (1.4-1.9) mu m in width. Ultrastructural analysis showed that the plasmodial wall had delicate projections towards the host tissue and a thin layer that prevented contact between the host cells and the parasite. in the ectoplasm, few mitochondria were observed, while generative cells, early stages of sporogenesis, and advanced spore development occurred in the plasmodial periphery, and more mature spores in internal regions. Histopathological analysis showed that plasmodia developed in the sub-epithelial connective tissue of gill filaments, causing compression of the adjacent tissues, deformation of gill filaments, and lamellar fusion. Phylogenetic analysis, based on 18S rDNA genes and using only Henneguya/Myxobolus species parasites of siluriform fish, showed grouping according to the fish family.
Assunto Myxozoa
Pseudoplatystoma
Sao Francisco River
18S rDNA
Ultrastructure
Idioma Inglês
Financiador Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
Número do financiamento CNPq: 472747/2012-6
FAPESP: 2011/10738-1
Data 2014-01-16
Publicado em Diseases of Aquatic Organisms. Oldendorf Luhe: Inter-research, v. 107, n. 3, p. 211-221, 2014.
ISSN 0177-5103 (Sherpa/Romeo, fator de impacto)
Editor Inter-research
Extensão 211-221
Fonte http://dx.doi.org/10.3354/dao02685
Direito de acesso Acesso restrito
Tipo Artigo
Web of Science WOS:000330721400005
URI http://repositorio.unifesp.br/handle/11600/37316

Mostrar registro completo




Arquivos deste item

Arquivos Tamanho Formato Visualização

Não existem arquivos associados a este item.

Este item aparece na(s) seguinte(s) coleção(s)