Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/835
Type: Artigo de periódico
Title: Myxobolus cordeiroi n. sp., a parasite of Zungaro jahu (Siluriformes: Pimelodiade) from Brazilian Pantanal: Morphology, phylogeny and histopathology
Author: ADRIANO, E. A.
ARANA, S.
ALVES, A. L.
SILVA, M. R. M.
CECCARELLI, P. S.
HENRIQUE-SILVA, F.
MAIA, A. A. M.
Abstract: This work is part of an ongoing investigation into the characteristics of Myxozoan parasites of freshwater fish in Brazil and was carried out using morphology, histopathology and molecular analysis. A new Myxosporea species (Myxobolus cordeiroi) is described infecting the jau catfish (Zungaro jahu). Fifty jau specimens were examined and 78% exhibited plasmodia of the parasite. The plasmodia were white and round, measuring 0.3-2.0 mm in diameter and the development occurred in the gill arch, skin, serosa of the body cavity, urinary bladder and eye. The spores had an oval body and the spore wall was smooth. Partial sequencing of the 18S rDNA gene resulted in a total of 505 bp and the alignment of the sequences obtained from samples in different organs revealed 100% identity. In the phylogenetic analysis, the Myxobolus species clustered into two clades-one primarily parasites of freshwater fish and the other primarily parasites of marine fish. M. cordeiroi n. sp. was clustered in a basal position in the freshwater fish species clade. The histological analysis revealed the parasite in the connective tissue of the different infected sites, thereby exhibiting affinity to this tissue. The plasmodium was surrounded by an outer collagen capsule of fibers with distinct orientation from the adjacent connective tissue and an inner layer composed of delicate collagen fibrils-more precisely reticular fibers. The development of the parasite in the cornea and urinary bladder caused considerable stretching of the epithelium. (C) 2009 Elsevier B.V. All rights reserved.
Subject: Zungaro jahu
Myxobolus cordeiroi n. sp.
Myxozoa
jau
Pantanal
Brazil
Country: Holanda
Editor: ELSEVIER SCIENCE BV
Citation: VETERINARY PARASITOLOGY, v.162, n.3/Abr, p.221-229, 2009
Rights: fechado
Identifier DOI: 10.1016/j.vetpar.2009.03.030
Address: http://apps.isiknowledge.com/InboundService.do?Func=Frame&product=WOS&action=retrieve&SrcApp=EndNote&UT=000267014000006&Init=Yes&SrcAuth=ResearchSoft&mode=FullRecord
http://dx.doi.org/10.1016/j.vetpar.2009.03.030
Date Issue: 2009
Appears in Collections:IB - Artigos e Outros Documentos

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