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Am. J. Trop. Med. Hyg., 77(4), 2007, pp. 732-736
Copyright © 2007 by The American Society of Tropical Medicine and Hygiene

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Catarina Virus, an Arenaviral Species Principally Associated with Neotoma micropus (Southern Plains Woodrat) in Texas

Maria N. B. Cajimat, Mary Louise Milazzo, Robert D. Bradley, AND Charles F. Fulhorst*
Microbiology and Immunology Graduate Program, Graduate School of Biomedical Sciences, and Department of Pathology, University of Texas Medical Branch, Galveston, Texas; Department of Biological Sciences and Museum, Texas Tech University, Lubbock, Texas

The purpose of this study was to define the taxonomic relationship of an arenavirus principally associated with the southern plains woodrat (Neotoma micropus) in southern Texas to other New World arenaviruses. The results of independent analyses of glycoprotein precursor amino acid sequences and nucleocapsid protein amino acid sequences indicated that the arenavirus in southern Texas is novel (proposed species name Catarina virus) and phylogenetically most closely related to Whitewater Arroyo virus, which is principally associated with the white-throated woodrat (Neotoma albigula) in northwestern New Mexico. Together, the close phylogenetic relationship between Catarina virus and Whitewater Arroyo virus and the association of these viral species with congeneric rodent species support the notion that the principal host relationships of some New World arenaviruses are a product of a long-term shared evolutionary relationship between the virus family Arenaviridae and the rodent family Cricetidae.

Received March 1, 2007. Accepted for publication June 25, 2007.

Acknowledgments: Maria N. B. Cajimat and Mary Louise Milazzo contributed equally to this study.

Financial support: This study was supported by National Institutes of Health grant AI-41435 (Ecology of Emerging Arenaviruses in the Southwestern United States).

* Address correspondence to Charles F. Fulhorst, Department of Pathology, University of Texas Medical Branch, 301 University Boulevard, Galveston, TX 77555–0609. E-mail: cfulhors{at}utmb.edu

Authors’ addresses: Maria N. B. Cajimat, Department of Epidemiology, University of Michigan, School of Public Health, 109 South Observatory, Ann Arbor, MI 48109, E-mail: ncajimat{at}umich.edu. Mary Louise Milazzo and Charles F. Fulhorst, Department of Pathology, University of Texas Medical Branch, 301 University Boulevard, Galveston, TX 77555–0609, E-mails: mamilazz{at}utmb.edu and cfulhors{at}utmb.edu. Robert D. Bradley, Department of Biological Sciences and Museum, Texas Tech University, Lubbock, TX 79409–3131, E-mail: robert.bradley{at}ttu.edu.

Reprint requests: Charles F. Fulhorst, Department of Pathology, Delivery Code L20706, University of Texas Medical Branch, 301 University Boulevard, Galveston, TX 77555–0609.






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