Scientists Try To Inoculate Sierra Yellow-Legged Frog Tadpoles Against Chytrid




Hundreds of tadpoles in California's High Sierras are being treated with a bacterium by Dr. Vance Vredenburg from San Francisco State University and colleagues from UC Santa Barbara, and the Sierra Nevada Aquatic Research Laboratory in an effort to inoculate them from the chytrid fungal infection that has wiped out amphibian populations around the world. Last week, the San Francisco Chronicle reported that the scientists backpacked into Dusy Basin in Kings Canyon National Part with the bacterium that they are hoping will make the tadpoles that are exposed to it immune to Batrachochytrium dendrobatidis fungal disease. According to the report, the bacteria have a chemical compound called violacein that penetrates the tadpole's skin and creates immunity against chytrid which causes an amphibians skin to thicken.

The bacteria, called Janthinobacterium lividum, or J.liv, was first tested three years ago. It was found to protect salamanders against the chytrid fungus. It was also successfully tested by Vredenburg on the Sierra Nevada yellow-legged frog (Rana sierrae) in the same area in 2010. If the tests are encouraging in Dusy Basin, it may result in more efforts throughout the world to "immunize" frog species that have not yet been exposed to chytrid.

Related Articles

USFWS Sued For Lack Of California Tiger Salamander Recovery Plan

Lack of plan further imperils Ambystoma californiense, conservation group says.

Australia's Armoured Mist Frog Range Expanded

Scientists move 40 Litoria lorica to new location four kilometers from only known area in which the frogs can be found.

Louisiana Proposes Endangered Status For Mississippi Gopher Frog

Wildlife and Fisheries Commission also proposes permit system for taking or killing Eastern Diamondback rattler and two species of pine snake.

Add your comment:

Cast Your Vote

Do you keep dart frogs?



 

Find Us On facebook