pesticides

Scientists try to develop frog vaccine while ignoring the pesticides that are harming their immunity


Most Viewed Articles
Popular on Facebook
The five biggest lies about Ebola being pushed by government and mass media
Why does the CDC own a patent on Ebola 'invention?'
White House admits staging fake vaccination operation to gather DNA from the public
Ultraviolet light robot kills Ebola in two minutes; why doesn't every hospital have one of these?
EXCLUSIVE: Natural News tests flu vaccine for heavy metals, finds 25,000 times higher mercury level than EPA limit for water
Truvia sweetener a powerful pesticide; scientists shocked as fruit flies die in less than a week from eating GMO-derived erythritol
Irrefutable proof we are all being sprayed with poison: 571 tons of toxic lead 'chemtrailed' into America's skies every year
Tetanus vaccines found spiked with sterilization chemical to carry out race-based genocide against Africans
Russia taking McDonald's to court, threatens countrywide shutdown
Oregon man serving prison sentence for collecting rainwater on his own property
The best way to help your body protect itself against Ebola (or any virus or bacteria)
Global warming data FAKED by government to fit climate change fictions
Senator who attacked Doctor Oz over dietary supplements received over $146,000 in campaign contributions from Big Pharma mega-retailer and Monsanto
Healthy 12-year-old girl dies shortly after receiving HPV vaccine
Ebola outbreak may already be uncontrollable; Monsanto invests in Ebola treatment drug company as pandemic spreads
HOAX confirmed: Michelle Obama 'GMOs for children' campaign a parody of modern agricultural politics
Ben & Jerry's switches to non-GMO, Fair Trade ice cream ingredients
W.H.O. contradicts CDC, admits Ebola can spread via coughing, sneezing and by touching contaminated surfaces

Delicious
(NaturalNews) A recent discovery has scientists talking about the possibility of vaccinating frogs against a killer fungus and touting vaccination as a possible way to stem the ongoing, catastrophic decline of amphibian populations wide. Yet media reports about this breakthrough are mostly ignoring the fact that widespread environmental contamination may be a more significant factor in amphibian population decline, and may even be responsible for increased susceptibility to fungal infection.

A vaccine for frogs?

For decades, scientists have warned that amphibians worldwide are going extinct at a catastrophic rate. More than one-third of the 6,000 amphibian species known to exist 30 years ago are now considered threatened or extinct.

While the amphibian decline seems to stem from a variety of environmental stressors including habitat destruction, urbanization, pollution and climate change, one of the greatest immediate threats has been identified as a chytrid fungus known as Batrachochytrium dendrobatidis (Bd). This immune-hampering fungus has been devastating populations already struggling for survival due to other environmental threats.

In a study published in the journal Nature, researchers from the University of South Florida have shown that oak toads can actually acquire immunity to Bd following repeated exposure to either the living or the dead fungus. The researchers found that, given enough exposure, toads even learned to avoid Bd in the environment.

Up until now, conservations scientists have responded to the Bd epidemic primarily by capturing wild amphibians in the hopes of preserving their genetic material for a hypothetical time when the epidemic has passed. The new findings have raised the possibility that, instead, whole populations could actually be inoculated against a fungus, boosting their immunity enough to keep Bd from wiping out already fragile populations.

Lead author Jason Rohr warned, however, that many more tests would need to be conducted to determine if such a course of action would be safe or effective. Research would also be needed to learn how long such immunity would last, and whether a "vaccine" could work on tadpoles, or only on adults.

"We are planning on testing whether simply dumping dead Bd into waterbodies will induce acquired immunity and reduce chytrid growth on frogs," Rohr said. "If it does, then it might be worth isolating the antigen on chytrid and synthesizing it. Theoretically, this antigen could then be released at locations where amphibian species are at risk."

Pesticide connection overlooked?

Although many ecologists have raised concerns that pesticides may be poisoning frogs, the chemicals' potential role in the Bd epidemic has been largely overlooked.

According to a study published in the journal Environmental Toxicology and Chemistry in 2003, pesticide exposure may actually increase amphibians' susceptibility to infection. Researchers exposed juvenile leopard frogs to a low-levels mix of pesticides, equivalent to what might realistically be found in their environment, then exposed the frogs to parasitic nematodes. They found that, after three weeks of exposure, the frogs had reduced levels of white blood cells and were more likely to become infected. Three weeks of a pesticide-free environment allowed their immune systems to recover.

Another study, published in the same journal in 2013, found pesticide metabolites even in the bodies of amphibians living far from agricultural areas.

"We found that even frogs living in the most remote mountain locations were contaminated by agricultural pesticides, transported long distances in dust and by rain," said researcher Kelly Smalling, of the U.S. Geological Survey.

Ecologists widely regarded amphibians as global indicator species, or "canaries in a coal mine." Because amphibians are so sensitive to environmental stresses such as climate change or low levels of toxins, they often show population declines or other signs of distress before larger animals do.

Sources for this article include:

http://www.nytimes.com

http://www.ncbi.nlm.nih.gov

http://www.alphagalileo.org

http://www.theguardian.com

Join over four million monthly readers. Your privacy is protected. Unsubscribe at any time.
comments powered by Disqus
Take Action: Support NaturalNews.com by linking back to this article from your website

Permalink to this article:

Embed article link: (copy HTML code below):

Reprinting this article:
Non-commercial use OK, cite NaturalNews.com with clickable link.

Follow Natural News on Facebook, Twitter, Google Plus, and Pinterest

Colloidal Silver

Advertise with NaturalNews...

Support NaturalNews Sponsors:

Advertise with NaturalNews...

GET SHOW DETAILS
+ a FREE GIFT

Sign up for the FREE Natural News Email Newsletter

Receive breaking news on GMOs, vaccines, fluoride, radiation protection, natural cures, food safety alerts and interviews with the world's top experts on natural health and more.

Join over 7 million monthly readers of NaturalNews.com, the internet's No. 1 natural health news site. (Source: Alexa.com)

Your email address *

Please enter the code you see above*

No Thanks

Already have it and love it!

Natural News supports and helps fund these organizations:

* Required. Once you click submit, we will send you an email asking you to confirm your free registration. Your privacy is assured and your information is kept confidential. You may unsubscribe at anytime.