Morphology and 18S rDNA sequencing identifies Henneguya visibilis n. sp., a parasite of Leporinus obtusidens from Mogi Gua double dagger u River, Brazil

Morphology and 18S rDNA sequencing identifies Henneguya visibilis n. sp., a parasite of Leporinus obtusidens from Mogi Gua double dagger u River, Brazil

Author Moreira, Gabriel Sassarão Alves Google Scholar
Adriano, Edson Aparecido Autor UNIFESP Google Scholar
Silva, Marcia Ramos Monteiro da Google Scholar
Ceccarelli, Paulo Sergio Google Scholar
Maia, Antonio Augusto Mendes Google Scholar
Institution Universidade de São Paulo (USP)
Universidade Federal de São Paulo (UNIFESP)
Universidade Estadual de Campinas (UNICAMP)
Ctr Nacl Pesquisa & Conservacao Peixes Continenta
Abstract During a survey of myxozoan parasites of freshwater fish from the Mogi Gua double dagger u River in So Paulo State, Brazil, plasmodia of Henneguya visibilis n. sp. were found on the fins of Leporinus obtusidens (Characiformes: Anostomidae). the plasmodia, which were observed on five out of eight (62.5 %) L. obtusidens examined, were 400-1,000 mu m long. Mature spores were elongated with a spore body 10.8 +/- 0.6 mu m long and 3.9 +/- 0.2 mu m wide, a caudal process 18 +/- 1.2 mu m long, and a total spore length of 26.8 +/- 1.1 mu m. Polar capsules were elongated 4.9 +/- 0.3 mu m long and 1.4 +/- 0.1 mu m wide. Histological examination indicated that the plasmodia developed in the connective tissue, and no inflammatory infiltrate was observed at the infection site. Ultrastructural analysis showed a plasmodium wall with a single membrane and several pinocytotic canals. Sporogenesis occurred from the periphery to the center of the plasmodia. Phylogenetic analysis of the 18S rDNA sequence using maximum likelihood and maximum parsimony methods showed H. visibilis n. sp. positioned in a sub-clade composed of Henneguya/Myxobolus parasites of several freshwater fish families.
Language English
Sponsor Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
Grant number CNPq: 477658/2010-5
Date 2014-01-01
Published in Parasitology Research. New York: Springer, v. 113, n. 1, p. 81-90, 2014.
ISSN 0932-0113 (Sherpa/Romeo, impact factor)
Publisher Springer
Extent 81-90
Origin http://dx.doi.org/10.1007/s00436-013-3629-3
Access rights Closed access
Type Article
Web of Science ID WOS:000329106500010
URI http://repositorio.unifesp.br/handle/11600/37225

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