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:7/21/2015)... July 21, 2015 Today, ZTE announced its ... as well as expected revenues in 2015 that relate to sales ... revenue guidance of approximately 2,200 MSEK for 2015. Jörgen ... leading smartphone manufacturer in China and we ... 02 5 for Axon , ...
(Date:7/13/2015)... 2015 Synaptics Inc. (NASDAQ: SYNA ... today announced sampling of ClearPad ® 4300, ... (TDDI) product targeting smartphones and tablets. This new ... , best-in-class touch controller IP and systems ... in the company,s Japan Design Center. TDDI enables ...
(Date:7/9/2015)... , July 9, 2015  Unchained Labs ... announcing its acquisition of Avid Nano. Avid Nano ... scattering (DLS) systems.    Also today, ... fastest and easiest to use protein sizing system. ... measures a protein,s hydrodynamic size, size distribution, aggregation ...
Breaking Biology News(10 mins):FPC's Touch Fingerprint Sensor FPC1025 in ZTE's Smartphone Axon 2Synaptics Announces Sampling of Second Generation TDDI Solutions 2Synaptics Announces Sampling of Second Generation TDDI Solutions 3Unchained Labs just can't get enough, acquires Avid Nano, rocks out the new pUNk! 2
(Date:8/4/2015)... ... August 04, 2015 , ... ... pumps and process equipment, announces the appointment of Dennis Rawle as European Director ... industrial industries. Most recently, he was General Manager and Technical Sales Manager for ...
(Date:8/4/2015)... 4, 2015 New ... journal serving the international surgical ... provider of scientific, technical, and medical information products and ... International Journal of Surgery Open ( IJS ... areas of surgery. This peer-reviewed, online-only journal will make ...
(Date:8/4/2015)...   California Cryobank Stem Cell Services LLC (dba ... an east coast cord blood and reproductive tissue bank ... tristate area. LifeLine clients will maintain full access to ... honored. Since 1991, LifeLine has provided a ... eggs, embryos, and cord blood stem cells. LifeLine Cryogenics was ...
(Date:8/3/2015)... -- At the 11th hour, ... shortfall of Jude Liversage,s campaign so the ... time.      (Photo: http://photos.prnewswire.com/prnh/20150803/254228 ) ... The Selective Dorsal Rhizotomy (SDR) procedure reduced the ... his wish to kick a ball around like his ...
Breaking Biology Technology:Dennis Rawle Joins Graphite Metallizing Corporation 2Elsevier Announces the Launch of International Journal of Surgery Open 2Elsevier Announces the Launch of International Journal of Surgery Open 3Elsevier Announces the Launch of International Journal of Surgery Open 4FamilyCord Announces Acquisition of LifeLine Cryogenics 2Cerebral Palsy Operation by The Portland Hospital Allows a Boy to Stand Properly for the First Time 2Cerebral Palsy Operation by The Portland Hospital Allows a Boy to Stand Properly for the First Time 3
Cached News: