To download a higher resolution JPG version of a particular image, click on the file name beneath each image. Biologists Elizabeth Davidson and James Collins are tracking a mysterious disease of amphibians, apparently caused by an iridovirus. James Jancovich and James Collins Photo by John C. Phillips. James Collins in the field at a cattle pond in southern Arizona. Cattle at a cattle pond .
Cattle are one the the possible sources for transmitting the virus from pond to pond.
Tanks are generally separated by wide stretches of desert rangeland. Map The Iridovirus. Jesse Brunner decontaminates a net to insure that researchers do not contribute to spreading the virus from pond to pond. Ambystoma tigrinum , Tiger Salamander. This individual is infected with an iridovirus and is near death.