Common pesticides ’can kill frogs within an hour’
2013 01 24

By Damian Carrington | Guardian.co.uk

New research suggests the chemicals are playing a significant and previously unknown role in the global decline of amphibians

Widely used pesticides can kill frogs within an hour, new research has revealed, suggesting the chemicals are playing a significant and previously unknown role in the catastrophic global decline of amphibians.

The scientists behind the study said it was both "astonishing" and "alarming" that common pesticides could be so toxic at the doses approved by regulatory authorities, adding to growing criticism of how pesticides are tested.

"You would not think products registered on the market would have such a toxic effect," said Carsten Brühl, at the University of Koblenz-Landau in Germany. "It is the simplest effect you can think of: you spray the amphibian with the pesticide and it is dead. That should translate into a dramatic effect on populations."

Trenton Garner, an ecologist at the Zoological Society of London, said: "This is a valuable addition to the substantial body of literature detailing how existing standards for the use of agricultural pesticides, herbicides and fertilisers are inadequate for the protection of biodiversity."

Amphibians are the best example of the great extinction of species currently under way, as they are the most threatened and rapidly declining vertebrate group. More than a third of all amphibians are included in the IUCN "red list" of endangered species, with loss of habitat, climate change and disease posing the biggest threats.

Brühl had previously studied how easily frogs can absorb pesticides through their permeable skins, which they can breathe through when underwater. But pesticides are not required to be tested on amphibians, said Brühl: "We could only find one study for one pesticide that was using an exposure likely to occur on farmland."

His team chose widely used fungicides, herbicides and insecticides. The most striking results were for a fungicide called pyraclostrobin, sold as the product Headline by the manufacturer BASF and used on 90 different crops across the world. It killed all the common European frogs used as test animals within an hour when applied at the rate recommended on the label. Other fungicides, herbicides and insecticides also showed acute toxicity, even when applied at just 10% of the label rate, with the insecticide dimethoate, for example, killing 40% of animals within a week.

[...]

Read the full article at: guardian.co.uk





Related Articles
UN warns of global collapse due to pesticides; Agenda 21 is pushed as solution
The "Dirty Dozen": Pesticide Levels in Foods
Wik-Bee Leaks: EPA Document Shows It Knowingly Allowed Pesticide That Kills Honey Bees
Dow Chemical’s New GMO and Herbicide Product Enlist
Why Monsanto is paying farmers to spray its rivals’ herbicides
New Frog Species Found in NYC
"Extinct" frog hops back into northern Israel
Killer frog virus sweeps Britain wiping out hundreds of thousands of amphibians
Toads could be used to predict earthquakes


Latest News from our Front Page

Roswell, UFOs and Project Pandora
2014 07 23
Well, now, this is interesting. In fact, it’s very interesting. Over at the Department of Defense’s website you can find a file that has been declassified via the Freedom of Information Act on the subject of Project Pandora (which, to a significant degree, was focused on Cold War secrets, and how microwaves can affect the mind and body). It’s a fascinating ...
Men of Europe, Put Down the Eckhart Tolle Book and Pick up Your Sword
2014 07 23
Remember who you really are... The New Age Tactical Spiritual Military Industrial Complex supports murder and genocide. What is happening in Gaza today will eventually take place in London, Dublin, New York, Lisbon, Barcelona, Oslo, Glasgow, Melbourne, Stockholm, Auckland and Cape Town and wherever you are reading this article. Notice is being served upon all humanity. Not just the people of ...
Study Challenges Hypothesis that Birds Evolved from Dinosaurs
2014 07 23
The re-examination of Scansoriopteryx – a sparrow-sized, pre-Archaeopteryx, bird-like creature that lived in what is today China during the Jurassic period, about 154 million years ago – challenges the widely accepted hypothesis that birds are derived from land-dwelling dinosaurs that gained the ability to fly. Unearthed in Inner Mongolia in 2002, Scansoriopteryx was previously classified as a theropod dinosaur, from which ...
Israeli Professor: Rape Hamas Militants’ Mothers and Sisters to Deter Terrorist Attacks
2014 07 23
An Israeli academic has claimed that raping wives and mothers of Palestinian Hamas militants is the only thing that could deter further terrorist attacks. The remarks by renowned Middle East scholar Mordechai Kedar of Bar-Ilan University were made three weeks ago after the grim discovery of the bodies of the three kidnapped Israeli teenagers, but the recording was published online (in ...
’Mysterious plane’ with no callsign spotted circling London for two hours
2014 07 23
Scotland Yard has declined to comment on reports of a mysterious eavesdropping spyplane circling London. A radar tracking website showed an aircraft orbiting London at 10,000 feet for more than two hours. The plane had no recognisable callsign but was identified as a twin-engine Cessna F406 with the registration G-BVJT. The aircraft has been linked in the past to a shadowy fleet of ...
More News »