Insecticiden

Unwarranted product defense by Bayer and Syngenta had catastrophic consequences for the environment

The nature of receptor binding by imidacloprid is of fundamental importance for risk assessment. If, as Bayer and Syngenta-sponsored scientists now infer, receptor binding is reversible, the toxicity of imidacloprid would be concentration-dependent only, and there would likely be a threshold

Neonic Pesticide May Become More Toxic in Tap Water

Yet again, our government scientists—the oft neglected but so important brain trust of our Nation—bring the public some very important new data. Pesticide water monitoring experts at the U.S. Geological Survey (USGS) paired up with scientists from the University of Iowa in a federally-funded collaboration to track neonicotinoid pesticides or “neonics” in tap water, including the potential to form chlorinated disinfection byproducts (DBPs) from the pesticides and their metabolites that may be more toxic than the original compounds. And, the news isn’t good.

Vögel verschwinden aus Europas Kulturland

Der Bestand an Brutvögeln im landwirtschaftlichen Raum ist in Europa während der vergangenen Jahrzehnte um mehr als die Hälfte zurückgegangen. Der Hauptgrund ist die intensive Landwirtschaft. Seit 1980 ist der Bestand an Vögeln des Kulturlands in der EU um rund 56 Prozent eingebrochen. Zu den betroffenen Arten gehören beispielsweise Feldlerche, Star (Sturnus vulgaris) oder Kiebitz (Vanellus vanellus). Das geht aus den gesammelten Daten des European Bird Census Council hervor, einem Zusammenschluss europäischer Vogelexperten mit Sitz im niederländischen Nijmegen.

Die Berufsfischer bangen um ihre Zukunft

Die Hälfte der grössten Schweizer Seen erfüllt die Gewässerschutzverordnung punkto Sauerstoffkonzentration nicht. Grund sind Pestizide und Düngemittel aus der Landwirtschaft. Gewässerkorrekturen und zunehmend steigende Wassertemperaturen. Die aktuelle Situation gefährdet die Existenz mancher Berufsfischer, wie der Geschäftsführer des Schweizerischen Fischereiverbands erklärt. Wenn es weniger Fische in den Gewässern gibt, fangen auch die Berufsfischer weniger, was sich negativ auf ihr Einkommen auswirkt.

The drivers of worldwide insect decline

Pesticide use is driving an “alarming” decline in the world’s insects that could have a “catastrophic” impact on nature’s ecosystems, researchers have warned. More than 40 per cent of insect species are at risk of extinction with decades, with climate change and pollution also to blame, according to a global scientific review. Their numbers are plummeting so precipitously that almost all insects could vanish within a century, the study found.

Asocial behaviours induced in worker bees by imidacloprid lead to colony collapse

Imidacloprid - a type of neonicotinoid - changes the way that worker bees interact with the colony’s larvae: they become less social, stop nursing larvae, experience altered social and spatial dynamics within nests, and cease hive insulation construction. A research team led by James Crall of Harvard University investigated the effects of imidacloprid using a robotic platform for continuous, multicolony monitoring of uniquely identified workers. Their research showed that the behaviours induced by imidacloprid lead to colony collapse.

Relationship between Urinary N-Desmethyl-Acetamiprid and Typical Symptoms including Neurological Findings

We previously determined a metabolite of acetamiprid, N-desmethyl-acetamiprid in the urine of a patient, who exhibited some typical symptoms including neurological findings. We sought to investigate the association between urinary N-desmethyl-acetamiprid and the symptoms by a prevalence case-control study. Spot urine samples were collected from 35 symptomatic patients of unknown origin and 50 non-symptomatic volunteers (non-symptomatic group, NSG, 4–87 year-old).

Associations between Autism Spectrum Disorders and Maternally-Reported Use of Imidacloprid

The environmental contribution to autism spectrum disorders (ASD) is largely unknown, but household pesticides are receiving increased attention. We examined associations between ASD and maternally-reported use of imidacloprid, a common flea and tick treatment for pets. Our analytic dataset included complete information for 262 typically developing controls and 407 children with ASD. Compared with exposure among controls, the odds of prenatal imidacloprid exposure among children with ASD were slightly higher, with an odds ratio (OR) of 1.3 (95% Credible Interval [CrI] 0.78, 2.2).

Low levels of neonicotinoids are present in commonly-consumed fruits and vegetables sold in the US

Residue data for seven neonicotinoid pesticides collected between 1999 and 2015 by the US Department of Agriculture’s Pesticide Data Program (PDP) were collated and summarized by year across various food commodities, including fruit, vegetable, meat, dairy, grain, honey, and baby food, as well as water to qualitatively describe and examine trends in contamination frequency and residue concentrations. The highest detection frequencies (DFs) for neonicotinoids by year on all commodities were generally below 20%.

Neonicotinoids detected in surface water and sediment of the Pearl Rivers, South China

Occurrence and distribution of five neonicotinoids (NEOs) in surface water and sediment were studied in the Pearl Rivers, including three trunk streams, Dongjiang, Beijiang, Xijiang River (DR, BR and XR), South China. At least one neonicotinoid was detected in surface water and sediment of the Pearl Rivers, with imidacloprid (IMI) and thiamethoxam (THM) being the frequently detected NEOs. Total amount of NEOs (∑5neonics) in surface water and sediment ranged from 24.0 to 322 ng/L, and from 0.11 to 11.6 ng/g dw, respectively.