Red Leg

Itโ€™s Wednesday my dudes! ๐Ÿธ Todayโ€™s path rounds are on ๐ซ๐ž๐ ๐ฅ๐ž๐ !

๐–๐ก๐š๐ญ ๐ข๐ฌ ๐ข๐ญ?
๐‘๐ž๐ ๐ฅ๐ž๐  or ๐›๐š๐œ๐ญ๐ž๐ซ๐ข๐š๐ฅ ๐๐ž๐ซ๐ฆ๐š๐ญ๐จ๐ฌ๐ž๐ฉ๐ญ๐ข๐œ๐ž๐ฆ๐ข๐š is one of the most recognizable diseases of amphibian species. As the name suggests, this condition is a bacterial condition that affects the skin (dermato-), turning it red!

๐–๐ก๐จ ๐ ๐ž๐ญ๐ฌ ๐ข๐ญ?
Any amphibian can get this!

๐–๐ก๐š๐ญ ๐œ๐š๐ฎ๐ฌ๐ž๐ฌ ๐ข๐ญ?
Red leg is most commonly attributed to the bacteria ๐€๐ž๐ซ๐จ๐ฆ๐จ๐ง๐š๐ฌ ๐ก๐ฒ๐๐ซ๐จ๐ฉ๐ก๐ข๐ฅ๐š, however many other bacteria can cause it as well. These infections typically occur when amphibians are stressed, and their immune system isnโ€™t functioning optimally. Therefore, common risk factors for red leg include overcrowded habitats, shipment or transport of amphibians, poor water quality, or suboptimal environmental temperatures.

๐–๐ก๐ฒ ๐ข๐ฌ ๐ญ๐ก๐ข๐ฌ ๐š ๐ฉ๐ซ๐จ๐›๐ฅ๐ž๐ฆ?
This condition causes ๐ฌ๐ž๐ฉ๐ญ๐ข๐œ๐ž๐ฆ๐ข๐š, where bacteria are free in the bloodstream and spread to multiple organs. Once of the most common outcomes of this septicemia is reddening of the skin, hence the name โ€œred legโ€. Ulcers and edema of the skin are also common.

๐‡๐จ๐ฐ ๐ข๐ฌ ๐ข๐ญ ๐๐ข๐š๐ ๐ง๐จ๐ฌ๐ž๐?
The diagnosis is confirmed through culturing the bacteria.

๐‡๐จ๐ฐ ๐ข๐ฌ ๐ข๐ญ ๐ญ๐ซ๐ž๐š๐ญ๐ž๐? ๐‡๐จ๐ฐ ๐ข๐ฌ ๐ข๐ญ ๐ฉ๐ซ๐ž๐ฏ๐ž๐ง๐ญ๐ž๐?
Treatment involves antibiotics that target the specific bacteria that is cultured. Prevention involves reducing amphibian stress, including ensuring their environment is optimal for their species.

๐๐ก๐จ๐ญ๐จ๐ฌ
1-3) Frogs with skin ulcers and reddening of the skin from red leg.
4) Sometimes the changes of red leg are quite subtle. This frog has multiple tiny red spots all over its pale underbelly, indicating the infection.

๐’๐จ๐ฎ๐ซ๐œ๐ž๐ฌ
Terio, KA, McAloose, D, St. Leger, J. Pathology of Wildlife and Zoo Animals. 2018.

Photos 1-4 ยฉ Noahโ€™s Arkive contributor Saunders, McNamara, Williams, Harmon licensed under CC BY-SA 4.0.

Leave a Reply