Caption: This infected Northern leopard frog (Rana pipiens), with two bony triangles and an extra foot in the left hind limb, is an example of the amphibian deformities studied by Pieter Johnson at the Center for Limnology. Johnson has recently authored a research paper showing that these malformations, along with the parasitic worm linked to them, have been found in lakes and ponds for over 50 years and represent an emerging disease within these wildlife populations.
Photo by: courtesy Pieter Johnson, Center for Limnology
Date: December 2003
High-resolution 300 DPI JPEG

Caption: This infected Northern leopard frog (Rana pipiens), with two extra hind limbs extending from the pelvis, is an example of the amphibian deformities studied by Pieter Johnson at the Center for Limnology. Johnson has recently authored a research paper showing that these malformations, along with the parasitic worm linked to them, have been found in lakes and ponds for over 50 years and represent an emerging disease within these wildlife populations.
Photo by: courtesy Pieter Johnson, Center for Limnology
Date: December 2003
High-resolution 300 DPI JPEG