We examined the effects of atrazine on sexual development in African clawed frogs (Xenopus laevis). Also, higher levels of phosphorus, a component of fertilizer, appeared to play a complementary role when atrazine was present.Also from the research abstract:A mesocosm experiment demonstrated that, relative to control tanks, atrazine tanks had immunosuppressed tadpoles, had significantly more attached algae and snails, and had tadpoles with elevated trematode loads, further supporting a causal relationship between atrazine and elevated trematode infections in amphibians.Connect with Science Buzz on Facebook and Twitter.Science Buzz is supported by the Atrazine, one of the worlds most widely used pesticides, wreaks havoc with the sex lives of adult male frogs, emasculating three-quarters of them and turning one in 10 into females, according to a new study by University of California, Berkeley, biologists. Inside the birds, the worms develop to adulthood. The presence of phosphorus (from fertilizer) A statistical analysis showed that of all the factors that could be at work, the presence of atrazine in water was the best predictor of higher parasite loads and reduced immune cell counts. Though the experiments were performed on a common laboratory frog, the African clawed frog (Xenopus laevis), field studies indicate that atrazine, a potent endocrine disruptor, similarly affects frogs in the wild, and could possibly be one of the causes of amphi… After further development, they burrow their way out again and swim in search of tadpoles. For the study, More fertilizer = more pond scum (periphyton)The trematode worm that infects the frogs gets passed to frog-eating birds like herons and egrets. “In an environment where they are competing with unexposed animals, they have zero chance of reproducing.”The 10 percent or more that turn from males into females – something not known to occur under natural conditions in amphibians – can successfully mate with male frogs but, because these females are genetically male, all their offspring are male.“When we grow these guys up, depending on the family, we will get anywhere from 10 to 50 percent females,” Hayes said.
Several states are considering banning atrazine, and six class action lawsuits have been filed seeking to eliminate its use. Is there any truth to his statement? The adults produce eggs that are released into water with the birds' feces. Let’s take a look.
They infect them, the tadpoles turn into frogs, and the cycle continues.It's interesting that the trematode and atrazine theories have come together, instead of competing. I normally take more time writing these articles, but "whipped this one out in 30 minutes". Why does it kill some plants, but spare algae?
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