Renner, R.  2008.  Atrazine Effects in Xenopus Aren't Reproducible. Environmental Science & Technology. 42:3491-3493.

From the Syngenta website (10 March 2010):

"A growing body of research conducted by independent labs across the world is showing that atrazine has no effect on amphibian development."

Check out the Syngenta website for their position on atrazine and amphibians in response to Tyrone Hayes' research.

See also this news item

From the AmphibiaWeb Site:

Atrazine is the most common pesticide contaminant in ground, surface, and drinking water. It also is a potent endocrine disruptor at very low concentrations across vertebrate taxa. In a new PNAS paper, Hayes et al. (2010) showed that atrazine exposure during larval development at levels below the EPA drinking water standard can profoundly affect male Xenopus laevis (African Clawed Frog) sexual function and morphology. In the most severe cases, male frogs were completely feminized morphologically and behaviorally, producing eggs and mating with other males.

From AmphibiaWeb

The California tiger salamander (Ambystoma californiense) has finally been granted protected status under the California Endangered Species Act, by a 3-2 vote of the California Fish and Game Commission on March 3, 2010. This native Californian species depends on ephemeral vernal pools for breeding, 95% of which have been lost in recent decades.

Read more about the rediscovery of the Australian frog Litoria castanea
here.

The first known monogamous amphibian species, based on genetic data, is Dendrobates imitator (Brown et al. 2010) as reported in a paper to be published in the April issue of American Naturalist.

From Random Samples, Science 312:31. 7 April 2006.