HOME >> BIOLOGY >> NEWS
Salamanders suffer delayed effects of common herbicide

razine exposure paled in comparison to the persistent effects of atrazine that continued to cause mortality after exposure ceased, said researchers. Compared to salamanders not exposed to atrazine, survivors of the atrazine exposure had significantly lower survival 421 days after being exposed. In other words, effects of early exposure to the chemical were showing up over the long term, such that the net effect of atrazine exposure was even worse later in life than it was while the animals were being exposed.

"The biggest surprise was that it took nearly a year to detect the effects of atrazine at 4 parts per billion, which is just 1 part per billion above the maximum allowable level in drinking water set by the U.S Environmental Protection Agency," said Rohr, who presented his findings at a recent workshop organized by the U.S Geological Survey in St. Louis, Missouri.

"What this tells me is that we need to consider the long-term effects of chemicals, and that exposure to atrazine during formative stages might have permanent effects on these salamanders that increases their risk of mortality," he added.

While the mechanism by which atrazine causes elevated mortality remains unclear, Rohr says other scientists have evidence suggesting that this pesticide is an endocrine disruptor.

Such chemicals disrupt the production of hormones that are vital to normal bodily functions. Concentrations of atrazine as low as 0.1 parts per billion have been shown to cause male frogs to develop both male and female organs by altering their production of sex hormones.

Findings from Rohr's study, which was funded by the U.S Environmental Protection Agency, National Science Foundation, and the Kentucky Academy of Sciences, could have implications for global amphibian declines.

"Salamanders, and amphibians in general, are crucial to ecosystems, as both predators and prey. They can be seen as bioindicators of environmental stress and harbingers of risk
'"/>

Contact: Amitabh Avasthi
axa47@psu.edu
814-865-9481
Penn State
23-Mar-2007


Page: 1 2 3

Related biology news :

1. Better sleep may put Huntingtons disease sufferers back on track
2. Male or female factor infertility -- men suffer just the same
3. New treatment increases life time expectancy of patients suffering from advanced liver cancer
4. Coarse particulate matter in air may harm hearts of asthma sufferers, UNC study finds
5. Vaccine hope for sufferers of potentially fatal stomach bug
6. Swell gel could bring relief to back pain sufferers
7. How fish species suffer as a result of warmer waters
8. Wolves are suffering less from inbreeding than expected
9. Hope remains for Alzheimers sufferers
10. New biologic treatment for tennis elbow may replace surgery for chronic sufferers
11. Children of allergy sufferers prone to same problem

Post Your Comments:
*Name:
*Comment:
*Email:
TAG: Salamanders suffer delayed effects common herbicide

(Date:7/28/2014)... TEMPE, Ariz. - Reactions among minerals and organic compounds ... deep carbon cycle, they provide energy for the deep ... life. However, very little is known about how minerals ... Arizona State University have demonstrated how a common mineral ... negating the need for toxic solvents or expensive ...
(Date:7/28/2014)... Solanum pennellii , a wild relative of the domestic ... researchers including the labs headed by Professors Neelima Sinha ... Plant Biology. The new genome information may help breeders ... July 27 in the journal Nature Genetics , ... University in Germany. The UC Davis labs carried out ...
(Date:7/28/2014)... research has identified areas of the Earth that are ... change. , Europe is particularly vulnerable, as it has ... per cent, of any continent in ,refugia, areas ... environmental conditions remain relatively constant during times of great ... are mostly in Scandinavia and Scotland. , The ...
Breaking Biology News(10 mins):Mineral magic? Common mineral capable of making and breaking bonds 2Mineral magic? Common mineral capable of making and breaking bonds 3Study finds Europe's habitat and wildlife is vulnerable to climate change 2
(Date:7/29/2014)... (PRWEB) July 29, 2014 The first ... a next generation approach to robotics. What sets Droidles ... patent pending technology that allows them to communicate, share ... wirelessly over the internet. , “The invention is the ... the little Droidles a life of their own, both ...
(Date:7/29/2014)... Acres, FL (PRWEB) July 29, 2014 ... ex situ lift out specimen preparation solutions, has been ... Trademark Office for specimen manipulation methods incorporating a unique ... 8,740,209. This is the second company patent for ... A. Giannuzzi. , These complementary patents extend ...
(Date:7/28/2014)... July 28, 2014 “2014 ... Lubricant Industry” is a professional and in-depth ... market. The report introduces Lubricant basic information, ... chain structure and industry overview. This research ... domestic market as well as global industry ...
(Date:7/28/2014)... 28, 2014 According ... Market by Products (Consumables, Instruments, Services), Methods (Phenotypic, Genotypic), Applications (Pharmaceutical, ... (Detection, Characterization) - Global Forecasts to 2019" ... is estimated at $896.5 Million in 2014 ... by 2019, growing at a CAGR of ...
Breaking Biology Technology:Droidles, the Social Network of Robots and Open Source Platform for the Internet of Things, Launches for Crowd Funding on IndieGoGo.com 2EXpressLO LLC Granted Second U.S. Patent for Innovative Specimen Preparation Methods 2Lubricant Market & Adhesion Promoter Industry (Globa, China) Analysis Now Available at DeepResearchReports.com 2Lubricant Market & Adhesion Promoter Industry (Globa, China) Analysis Now Available at DeepResearchReports.com 3Lubricant Market & Adhesion Promoter Industry (Globa, China) Analysis Now Available at DeepResearchReports.com 4Microbial Identification Market worth $1,194.1 Million by 2019 2Microbial Identification Market worth $1,194.1 Million by 2019 3
Cached News: