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Journal of Wildlife Diseases, 44(1), 2008, pp. 174-176
© Wildlife Disease Association  2008
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SHORT COMMUNICATION

Infection of Spotted Salamanders (Ambystoma maculatum) with Ichthyophonus-like Organisms in Virginia

 Joy L. Ware1,5, Cathy Viverette2, John D. Kleopfer3, Leeanna Pletcher4, Davis Massey1 and Anne Wright4

1 Department of Pathology, Virginia Commonwealth University School of Medicine, Richmond, Virginia 23298, USA;
2 Center for Environmental Studies, Virginia Commonwealth University, Richmond, Virginia 23298, USA;
3 Virginia Department of Game and Inland Fisheries, 3801 John Tyler Memorial Hwy, Charles City, Virginia 23032, USA;
4 Department of Biology, Virginia Commonwealth University, Richmond, Virginia 23298, USA
5 Corresponding author (email: jware{at}mcvh-vcu.edu)

ABSTRACT:   Ichthyophonus-like organisms were found in two free-ranging adult spotted salamanders (Ambystoma maculatum) captured within two different vernal ponds in the Virginia Commonwealth University Rice Center for Environmental Life Sciences in Charles City County, Virginia. Histopathologic examination of necropsied specimens revealed large spores, often enclosed by granulomas. These enclosed spores resembled those caused by the fish pathogen Ichthyophonus hoeferi. One salamander displayed an externally visible large swelling beneath the jaws. The other lacked macroscopic abnormalities, but histologic sections of ventral muscle revealed early-stage Ichthyophonus-like organisms and minimal granulomatous reactions. This is the first report of Ichthyophonus-like infection of Ambystoma maculatum in Virginia.
  Key words:  Ambystoma maculatum, Ichthyophonus-like organisms, salamander disease.






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