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A new microsporidian parasite, Heterosporis saurida n. sp. (Microsporidia) infecting the lizardfish, Saurida undosquamis from the Arabian Gulf, Saudi Arabia: ultrastructure and phylogeny

Published online by Cambridge University Press:  08 February 2012

S. AL-QURAISHY ,
A. S. ABDEL-BAKI ,
H. AL-QAHTANI ,
M. DKHIL ,
G. CASAL  and
C. AZEVEDO
S. AL-QURAISHY
Affiliation:
Zoology Department, College of Science, King Saud University, P.O. Box 12455, Riyadh 11451, Saudi Arabia
A. S. ABDEL-BAKI*
Affiliation:
Zoology Department, College of Science, King Saud University, P.O. Box 12455, Riyadh 11451, Saudi Arabia Zoology Department, Faculty of Science, Beni-Suef University, Egypt
H. AL-QAHTANI
Affiliation:
Zoology Department, College of Science, King Saud University, P.O. Box 12455, Riyadh 11451, Saudi Arabia
M. DKHIL
Affiliation:
Zoology Department, College of Science, King Saud University, P.O. Box 12455, Riyadh 11451, Saudi Arabia Department of Zoology and Entomology, Faculty of Science, Helwan University, Egypt
G. CASAL
Affiliation:
Department of Cell Biology, Institute of Biomedical Sciences, University of Porto (ICBAS/UP), 4099–003 Porto, Portugal Laboratory of Pathology, Interdisciplinary Centre of Marine Environmental Research, University of Porto (CIIMAR/UP), Porto, Portugal Departamento de Ciências, Instituto Superior de Ciências da Saúde – Norte, CESPU, Gandra, Portugal
C. AZEVEDO
Affiliation:
Zoology Department, College of Science, King Saud University, P.O. Box 12455, Riyadh 11451, Saudi Arabia Department of Cell Biology, Institute of Biomedical Sciences, University of Porto (ICBAS/UP), 4099–003 Porto, Portugal Laboratory of Pathology, Interdisciplinary Centre of Marine Environmental Research, University of Porto (CIIMAR/UP), Porto, Portugal
*
*Corresponding author: Zoology Department, College of Science, King Saud University, P.O. Box 12455, Riyadh 11451, Saudi Arabi. Tel: +0096614675754. Fax: +0096614678514. E-mail: azema1@yahoo.com
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Summary

A new microsporidian that infects the lizardfish Saurida undosquamis (Richardson, 1848) that are caught in the Arabian Gulf in Saudi Arabia is described here. This parasite invades the skeletal muscle of the abdominal cavity forming white, cyst-like structures containing numerous spores. The prevalence of the infection was 32·1% (135/420). The spores were oval to pyriform in shape and measured approximately 3·3 μm×2·0 μm. The developing spores were found within parasitophorous vacuoles. In mature spores, the polar filament was arranged into 5 coils in a row. Molecular analysis of the rRNA genes, including the ITS region, and phylogenetic analyses using maximum parsimony, maximum likelihood, and Bayesian inference were performed. The ultrastructural characteristics and phylogenetic analyses support the recognition of a new species, herein named Heterosporis saurida n. sp.

Keywords

Arabian Gulf fishMicrosporidiaultrastructurephylogenyHeterosporis saurida
Type
Research Article
Information
Parasitology , Volume 139 , Issue 4 , April 2012 , pp. 454 - 462
Copyright
Copyright © Cambridge University Press 2012

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