The common perception that pesticides reduce or eliminate target insect species may not always hold. Jennifer Weathered and Edd Hammill report that the impacts of agricultural pesticides on assemblages of aquatic insects varied resulting in distinct ecological winners and losers within aquatic communities.
New findings of a multi-university research team show the pesticide DDT persists in remote lakes at concerning levels half a century after it was banned, affecting key aquatic species and potentially entire lake food webs.
To control pest outbreaks, airplanes sprayed more than 6,280 tons of dichlorodiphenyltrichloroethane (DDT) onto forests in New Brunswick, Canada, between 1952 and 1968, according to Environment Canada. By 1970, growing awareness of the harmful effects of DDT on wildlife led to curtailed use of the insecticide in the area. However, researchers reporting in ACS' Environmental Science & Technology have shown that DDT lingers in sediments from New Brunswick lakes, where it could alter zooplankton communities.
A new study by Imperial Brands, owners of leading vape brand blu, contributes to the increasing evidence base substantiating vaping's harm reduction potential compared to smoking. The research, presented at the 58th annual meeting of the Society of Toxicology earlier this year, compared the in-vitro toxicological responses of a 3D model of human lung tissue to myblu vapour and cigarette smoke across a range of biological endpoints.
Nitrate pollution of US drinking water may cause up to 12,594 cases of cancer a year, according to a new peer-reviewed study by the Environmental Working Group.
The sea water, beaches and sediments on the Tarragona coast contain quantities of plastic similar to those in a big city like Barcelona. And more than half are clothing fibres from washing machines. This is one of the main findings of a study carried out by researchers from the URV's research group Tecnatox and presented at a congress in Helsinki.
Replenishing venom takes time and energy -- so it pays to be stingy with stings. According to researchers at the Australian National Institute of Tropical Health and Medicine, scorpions adapt their bodies, their behavior and even the composition of their venom, for efficient control of prey and predators. Writing in Frontiers in Ecology and Evolution, they say it's not just the size of the stinger, but also how it's used that matters.
A study by the FAPESP-funded Research, Innovation and Dissemination Center shows that toxins produced by young female stingrays cause more pain, whereas toxins produced by adult stingrays cause tissue necrosis.
A recent study shows that that the potentially toxin-producing plankton species Pfiesteria piscicida prefers to colonize plastic particles, where they are found in 50 times higher densities than in the surrounding water of the Baltic Sea and densities about two to three times higher than on comparable wood particles floating in the water.
A new study by Imperial Brands, owners of vape brand blu, suggests that Genomic Allergen Rapid Detection (GARD) in-vitro assays can be used to differentiate and classify vape e-liquids, as well as detect allergens potentially present in ingredients. These assays were originally developed to assess the sensitisation potential of compounds in the chemical manufacturing industry, but this pioneering research is the first vaping-related application and demonstrates the potential to raise product standards in this area.