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Preview: Ecotoxicology Current Events and Ecotoxicology News from Brightsurf

Ecotoxicology Current Events and Ecotoxicology News from Brightsurf

Ecotoxicology Current Events and Ecotoxicology News Events, Discoveries and Articles from Brightsurf

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Important development could reduce numbers of fish required in toxicology research

Mon, 26 Mar 18 00:11:20 -0700

Scientists at the University of Plymouth, working in partnership with AstraZeneca, have developed a new method which could help assess the effects of chemicals on digestive systems.

Exposure to chemical found in plastics 'hard to avoid' in everyday life

Mon, 05 Feb 18 00:08:40 -0800

86 per cent of teenagers have traces of Bisphenol A (BPA), a chemical compound used to make plastics, in their body, an Engaged Research public engagement project in collaboration with the University of Exeter has found.

Male trout are now real males again

Mon, 27 Nov 17 00:06:10 -0800

The media has been telling us about feminised male fish for decades, but now researchers at SDU announce that this feminisation has completely disappeared in certain parts of Denmark.

Even small amounts of oil made birds near Deepwater Horizon sick, researchers say

Wed, 18 Oct 17 00:15:40 -0700

Blood samples taken by first responders showed that individuals exposed to small amounts of oil from the spill suffered from hemolytic anemia--a condition that occurs when toxins enter the blood stream and damage red blood cells that carry oxygen to tissues.

A milestone in aquatic toxicology

Tue, 29 Aug 17 00:09:00 -0700

The public release of first generation annotations for the fathead minnow genome was published today in Environmental Toxicology and Chemistry.

Mercury is altering gene expression

Tue, 15 Aug 17 00:13:50 -0700

Mercury causes severe neurological disorders in people who have consumed highly contaminated fish. Whereas we know about the element's extreme toxicity, what happens further down the food chain, all the way down to those microalgae that are the first level and the gateway for mercury? By employing molecular biology tools, a team of researchers from UNIGE measured the way mercury affects the gene expression of algae, even when its concentration in water is very low.

Innovative sensor can screen toxic drugs, help develop biomaterials, and much more

Wed, 05 Apr 17 00:10:30 -0700

Researchers at the University of California, Riverside have found an innovative new use for a simple piece of glass tubing: weighing things. Their glass tube sensor will help speed up chemical toxicity tests, shed light on plant growth, and develop new biomaterials, among many other applications.

Evolutionary advantage of the common periwinkle

Fri, 24 Mar 17 00:14:20 -0700

A special kind of small sulfur-rich proteins, the metallothioneins, have an extraordinarily large capability for binding heavy metals. An international team of scientists has now discovered that the marine common periwinkle, which is widely considered a delicacy, contains the largest version of the protein found yet, with one additional cadmium-binding domain and a one-third higher detoxification capacity. As they report in the journal Angewandte Chemie, this feature may help the snail survive in heavy-metal-polluted environments.

The incorporation into the body of metals from the River Deba sediments is simulated

Mon, 20 Mar 17 00:05:00 -0700

Researchers in the UPV/EHU's Department of Chemical Engineering and the Environment have shown that not all the metal contained in the river's sediments directly affects human health but that only a fraction of these metals can be incorporated into the human body. In the study they estimated the bioaccessibility of metals contained in sediments in the River Deba by means of the in vitro simulation of the conditions that the sediment would undergo in the human gastrointestinal tract.

Coal ash selenium found in fish in N.C. lakes

Tue, 07 Feb 17 00:16:20 -0800

A new Duke study has found high levels of selenium in the tissues of fish in North Carolina lakes that receive coal ash effluents from power plants. Concentrations of selenium exceeding EPA-recommended thresholds for aquatic health were found in the liver, muscle, ovary and testes tissues of the fish, as well as in bottom waters at two of the lakes, despite the fact that selenium inputs have decreased or stopped in recent years.

Substance in crude oil harms fish hearts, could affect humans as well

Tue, 31 Jan 17 00:14:20 -0800

Exposure to oil can cause severe cardiovascular effects in fish. Experiments provide direct evidence of how phenanthrene, an oil pollutant found in water, air and soil, causes irregular heartbeat and weaker contractions of heart cells.

Synthetic chemicals: Ignored agents of global change

Tue, 24 Jan 17 00:16:00 -0800

Despite a steady rise in the manufacture and release of synthetic chemicals, research on the ecological effects of pharmaceuticals, pesticides, and industrial chemicals is severely lacking. This blind spot undermines efforts to address global change and achieve sustainability goals. So reports a new study in Frontiers in Ecology and the Environment.

Which chemicals are hazardous to reproduction?

Fri, 11 Nov 16 00:08:20 -0800

Regulatory authorities around the world can in future instruct manufacturers of chemicals and drugs to check their products for harmful effects on reproduction by means of a new test with molluscs.

Coastal wildlife more vulnerable to microplastics than expected

Mon, 03 Oct 16 00:16:30 -0700

Coastal-dwelling marine wildlife, including crabs, lobsters and shellfish, which play a crucial role in the food chain, are more vulnerable to harmful plastic pollution than previously expected, a new study has found.

Membrane fluidity influences sensitivity of ovarian cancer cell lines to auranofin

Mon, 03 Oct 16 00:09:10 -0700

Increased fluidity in cell membranes could have a major impact on an ovarian cancer cell's sensitivity to treatment using the anti-rheumatic drug auranofin, research led by Plymouth University suggests.

Rising temperatures could accelerate radiation induced DNA effects in marine mussels

Tue, 23 Aug 16 00:05:20 -0700

Increased sea temperatures could have a dramatic effect on radiation-induced damage in marine invertebrates, a study led by Plymouth University, in conjunction with the Centre for Environment, Fisheries and Aquaculture Science (Cefas) suggests.

Weathered oil from DW Horizon spill may threaten fish embryos and larvae development

Tue, 12 Jul 16 00:01:30 -0700

A research team led by scientists at the University of California, Riverside and the University of Miami Rosenstiel School of Marine and Atmospheric Science have found that ultraviolet light is changing the structure of the Deepwater Horizon oil components into something more toxic, further threatening numerous commercially and ecologically important fishes.

Weathered oil in Gulf of Mexico may threaten development of fish embryos and larvae

Mon, 11 Jul 16 00:00:40 -0700

The Deepwater Horizon (DWH) oil spill, in which nearly three million barrels of crude oil got released in 2010 into the northern Gulf of Mexico, contaminated the spawning habitats for many fishes. A research team led by an environmental scientist at the University of California, Riverside has now found that ultraviolet light is changing the structure of the DWH oil components into something more toxic, further threatening numerous commercially and ecologically important fishes.

Waters are more polluted than tests say

Mon, 30 Nov 15 00:02:20 -0800

Bodies of water are 'sinks', and thereby bind contaminants particularly well. If even slightly toxic concentrations in water are to be detected, the growth and swimming behavior of small crustaceans and copepods should be used for ecotoxicological assessments. This was the conclusion of a scientist from the TUM, who carried out a number of studies on the subject. She also confirmed that it is more informative to test several substances on various aquatic species, rather than carrying out individual toxicity tests.

Researchers provide detailed genetic information on fish

Tue, 03 Nov 15 00:14:50 -0800

The fathead minnow has long been a premier animal model for research and regulation related to environmental toxins. Unfortunately, however, genetic information about this species is incomplete. The lack of genome sequence information for the species has limited scientists' ability to dissect complex traits, evaluate genetic markers, identify gene regulatory sequences, and elucidate biological pathways.

Elsevier announces the launch of NanoImpact, a new multidisciplinary journal

Wed, 28 Oct 15 00:02:30 -0700

Elsevier, a world-leading provider of scientific, technical and medical information products and services, announces the launch of NanoImpact, a new multidisciplinary journal that is devoted to publishing cutting edge research addressing the behavior and impact of nanomaterials on human health and environmental systems.

Urban runoff killing coho salmon, but simple solution within reach

Thu, 08 Oct 15 00:08:10 -0700

Toxic runoff from highways, parking lots and other developed surfaces is killing many of the adult coho salmon in urban streams along the West Coast, according to a new study that for the first time documents the fatal connection between urban stormwater and salmon survival. The good news is that the same study published today in the Journal of Applied Ecology also found that inexpensive filtration of urban runoff through simple columns of sand and soil can completely prevent the toxic effects on fish.

Delayed effects of oil spill compromise long-term fish survival

Tue, 08 Sep 15 00:08:10 -0700

For 25 years, methodical research by scientists has investigated the effects of the Exxon Valdez oil spill in 1989 on Alaskan communities and ecosystems. A new study released today into the effects of the 1989 Exxon Valdez oil spill in Alaska shows that embryonic salmon and herring exposed to very low levels of crude oil can develop hidden heart defects that compromise their later survival, indicating that the spill may have had much greater impacts on spawning fish than previously recognized.

Stem cells help researchers study the effects of pollution on human health

Mon, 10 Aug 15 00:07:40 -0700

A recent study published in the Journal of Environmental Sciences shows that embryonic stem cells could serve as a model to evaluate the physiological effects of environmental pollutants efficiently and cost-effectively.

Protecting the environment by re-thinking death

Tue, 04 Aug 15 00:13:20 -0700

Scientists first had to re-think death before they could develop a way of testing the potential harm to the environment caused by thousands of chemicals humankind uses each day. Researchers led by Dr Roman Ashauer, of the Environment Department at the University of York, refined the technique of survival analysis used routinely by toxicologists, biologists, medical researchers and engineers. The research could pave the way for testing the estimated 15,000 substances discovered daily.

Endocrine-disrupting chemicals in baby teethers

Thu, 21 May 15 00:00:40 -0700

In laboratory tests, two out of 10 teethers, plastic toys used to sooth babies' teething aches, release endocrine-disrupting chemicals. The findings were reported by researchers at the Goethe University in the current issue of the Journal of Applied Toxicology.

Griffon vultures are exposed to high concentrations of lead in their diets

Tue, 19 May 15 00:10:30 -0700

Because of their position on the food chain and their dietary habits, Griffon vultures from the Iberian Peninsula are exposed to accumulation of heavy metals in their tissues. A study benefiting from the participation of the Autonomous University of Barcelona reveals that, due to their diets, wild populations of Griffon vultures in Catalonia show the presence of a high amount of lead, which affects their immune systems and reproductive function.

How oil damages fish hearts: Five years of research since the Deepwater Horizon oil spill

Thu, 23 Apr 15 00:11:00 -0700

Scientists have shown that toxic compounds in oil target the still-forming hearts of larval fish, leading to developmental defects and reduced survival.

Predicting pesticide loads more accurately

Fri, 27 Mar 15 00:14:20 -0700

The EU wants to further improve the authorization process for plant protection products. The different national procedures for this are supposed to be further harmonized. Fraunhofer researchers have developed a software for estimating the transfer of pesticides into surface water initially in Germany.

World's first fully integrated research facility opens in Calgary wastewater plant

Tue, 17 Mar 15 00:11:10 -0700

For the first time, university researchers are working side-by-side with municipal operators to advance wastewater treatment technologies and knowledge that will lead to cleaner water, a better protected ecosystem and improved public health. Today, the University of Calgary and the City of Calgary unveiled the $38.5 million Advancing Canadian Wastewater Assets facility at the Pine Creek Wastewater Treatment Plant.

Simple soil mixture reverses toxic stormwater effects

Tue, 20 Jan 15 00:16:30 -0800

A simple column of common soil can reverse the toxic effects of urban runoff that otherwise quickly kills young coho salmon and their insect prey, according to new research by Washington State University, NOAA Fisheries and the U.S. Fish and Wildlife Service. The affordable and remarkably effective treatment offers new promise for controlling toxic pollutants that collect on paved surfaces and wash off as stormwater into rivers, streams and the ocean.

Drugs in the environment affect plant growth

Fri, 05 Dec 14 00:14:00 -0800

By assessing the impacts of a range of non-steroidal anti-inflammatory drugs, the research has shown that the growth of edible crops can be affected by these chemicals -- even at the very low concentrations found in the environment.

Environmental pollutants make worms susceptible to cold

Fri, 19 Sep 14 00:15:50 -0700

Some pollutants are more harmful in a cold climate than in a hot, because they affect the temperature sensitivity of certain organisms. Now researchers from Danish universities have demonstrated how this happens, and it can help us better predict contamination risks, especially in the Arctic.

Scientific breakthrough: International collaboration has sequenced salmon genome

Tue, 10 Jun 14 00:02:00 -0700

Today the International Cooperation to Sequence the Atlantic Salmon Genome announced completion of a fully mapped and openly accessible salmon genome.

Beneficial organisms react differently to parasite drug

Mon, 14 Apr 14 00:02:10 -0700

The drug ivermectin is used around the world to combat parasites in humans and animals. The active ingredient is also known to harm dung-degrading beneficial organisms. An international research team headed up by evolutionary biologists at the University of Zurich have now demonstrated that certain dung organisms react more sensitively to ivermectin than previously assumed. Hence there is a need for more sophisticated field tests.

NOAA led study: Crude oil causes developmental abnormalities in large marine fish

Mon, 24 Mar 14 00:03:30 -0700

Crude oil from the 2010 Deepwater Horizon disaster causes severe defects in the developing hearts of bluefin and yellowfin tunas, according to a new study by a team of NOAA and academic scientists. The findings, published in the Proceedings of the National Academy of Sciences on the 25th anniversary of the Exxon Valdez oil spill, show how the largest marine oil spill in United States history may have affected tunas and other species that spawned in oiled offshore habitats in the northern Gulf of Mexico.

'Virtual fish' research aims to reduce the requirement for live animal testing

Thu, 13 Mar 14 00:03:20 -0700

The effectiveness of 'virtual fish' in establishing the toxicity and concentration of man-made chemicals is to be investigated by biological scientists at Plymouth University in collaboration with multinational pharmaceutical company, AstraZeneca.

Stanford, NOAA scientists discover mechanism of crude oil heart toxicity

Thu, 13 Feb 14 00:12:20 -0800

While studying the impact of the 2010 Deepwater Horizon oil spill on tuna, a research team led by Barbara Block, a professor of marine sciences, discovered that crude oil interrupts a molecular pathway that allows fish heart cells to beat effectively. The components of the pathway are present in the hearts of most animals, including humans.

Scientists discover the mechanism of heart failure in fish exposed to oil spills

Thu, 13 Feb 14 00:06:50 -0800

Researchers from NOAA Fisheries and Stanford University, working on the Natural Resources Damage Assessment following the Deepwater Horizon Oil Spill, have found that some petroleum compounds act as ion channel blockers in the heart cells of young tuna, disrupting normal cardiac function. This will lead to the creation of new diagnostic tools for measuring the biological impact of pollution, and may have implications for the health of vertebrates other than fish as well.

Herbicides may not be sole cause of declining plant diversity

Tue, 04 Feb 14 00:16:30 -0800

The increasing use of chemical herbicides is often blamed for the declining plant biodiversity in farms. However, other factors beyond herbicide exposure may be more important to species diversity, according to Penn State researchers.

UI biology professor finds 'Goldilocks' effect in snail populations

Tue, 03 Dec 13 00:07:40 -0800

A University of Iowa researcher has discovered that a

2 LSU Professors named AAAS Fellows

Mon, 02 Dec 13 00:09:00 -0800

LSU Professors John Fleeger and Robert Lipton have been named Fellows of the American Association for the Advancement of Science, or AAAS.

Frontiers launches 2 new open-access journals: Frontiers in Earth Science and Frontiers in Environmental Science

Tue, 05 Nov 13 00:07:10 -0800

Frontiers launches two new open-access journals: Frontiers in Earth Science and Frontiers in Environmental Science.

Illinois river otters exposed to chemicals banned decades ago

Tue, 15 Oct 13 00:09:40 -0700

Researchers report that river otters in Central Illinois are being exposed to polychlorinated biphenyls and pesticides that were banned in the US in the 1970s and '80s. Their analysis appears in the journal Ecotoxicology and Environmental Safety.

Invasive mussel is not harmed by toxins and invades the freshwaters of Europe and North America

Thu, 03 Oct 13 00:07:40 -0700

While most freshwater mussels react stressfully and weaken when exposed to the toxins in blue-green algae in their water environment, the little zebra mussel is rather indifferent. It is not affected by the toxins, and this helps it outmatch stressed and weakened mussels, report researchers from the University of Southern Denmark. This is bad for the biodiversity, and in some countries the superior zebra mussels imposes great costs to the industry.

New data show agricultural anabolic steroids regenerate in aquatic ecosystems

Thu, 26 Sep 13 00:11:50 -0700

New regulatory approaches may be needed to assess environmental risks of agricultural growth promoters, and similar human pharmaceuticals, following research that shows a newly found reversion mechanism allows unexpected persistence of the steroidal substances in aquatic environments. Results of the research will be published in an article in the renowned journal Science -- the weekly journal of AAAS, the science society -- next month and are available immediately online in Science Express.

Pesticides significantly reduce biodiversity in aquatic environments

Mon, 17 Jun 13 00:09:00 -0700

The pesticides, many of which are currently used in Europe and Australia, are responsible for reducing the regional diversity of invertebrates in streams and rivers by up to 42 percent, researchers report in the Proceedings of the National Academy of Sciences.

Frontiers launches new open-access journal in Bioengineering and Biotechnology

Thu, 23 May 13 00:13:50 -0700

Frontiers, one of the world's largest and fastest growing open-access publishers, today announces the launch of a new journal, Frontiers in Bioengineering and Biotechnology.

Is nanosilver toxic?

Thu, 28 Feb 13 00:09:10 -0800

According to Finnish-Estonian joint research with data obtained on two crustacean species, there is apparently no reason to consider silver nanoparticles more dangerous for aquatic ecosystems than silver ions. The results were reported in the journal Environmental Science and Pollution Research late last year. Jukka Niskanen has utilized the same polymerisation and coupling reactions in his doctoral dissertation.

Mercury releases contaminate ocean fish: Dartmouth-led effort publishes major findings

Mon, 03 Dec 12 00:01:30 -0800

In new research published in a special issue of the journal Environmental Research and in