Rana utricularia

Lefcort H. (1996). Adaptive, chemically mediated fright response in tadpoles of the Southern Leopard frog, Rana utricularia. Copeia 2, 455-459. 

Yeung, G.L. 1978. The influence of lead, an environmental pollutant on metamorphosis of Rana utricularia (Amphibia Ranidae). Arkansas Acad. Sci. Proc. 32 83-86. 

Amphibians Southern leopard frog, Rana utricularia-, green <0.01 mg/kg FW whole body, less skin and 3... 

In Rana temporaria, the anionic charge is carried by Kdn, and also by sulfate and glucuronic acid (Fig. 8). In Rana utricularia, traces of NeuSAc were characterized and the presence of glucuronic acid and sulfate has been confirmed. On the basis of these results, it remains impossible to correlate the presence of these acidic sugars with the taxonomy and phylogeny of amphibians. 

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