Steeds meer bestrijdingsmiddelen in voedsel

Op fruit en groente worden vaker meerdere bestrijdingsmiddelen tegelijk aangetroffen. Ongeveer een op de 25 geteste producten kan de wettelijke grenswaarde voor deze chemische stoffen overschrijden en het aantal geconstateerde overtredingen neemt toe. Dat blijkt uit de meest recente rapportage van de Europese Voedselveiligheidsautoriteit EFSA. Bovendien worden er op Europese producten nog regelmatig illegale bestrijdingsmiddelen aangetroffen.

Bird population decline accelerated after Czech EU entry

The bird population has been declining in Czech farmland, with the decline accelerating since the country's EU entry in 2004, experts from Charles University's Faculty of Sciences write in a study published by the Conservation Letters international journal. The joint European policy and system of agricultural subsidies are unfavourable to birds and wildlife, the study says, cited by the Czech Society for Ornithology (CSO).

Study shows EU pesticide ban failing to protect suburban bees

Bees living in suburban habitats are still being exposed to significant levels of pesticides despite the EU ban on the use of neonicotinoid pesticides on flowering crops, new research from University of Sussex scientists shows. The study, with colleagues at Stirling University and Rothamsted Research, found that neonicotinoid exposure for rural bumblebees declined after the ban's implementation in 2015 but the risk to bumblebees in suburban gardens remained largely the same.

Zwaluwen gaan ten onder aan het gebrek aan insecten

Het lijkt misschien prettig, minder insecten die van de voorruit gewassen moeten worden of ons lastig vallen in de tuin. Maar de massale insectensterfte is vooral heel zorgelijk en gevaarlijk voor de kringloop van het leven. Al jaren neemt het aantal insecten af, in sommige gebieden is in de afgelopen decennia zelfs een daling tot 75% geregistreerd. Dit blijft niet zonder gevolgen. Ecoloog Jan Doevendans volgt al tientallen jaren de zwaluwpopulaties. Sinds de jaren ’70 heeft hij honderden nestkasten opgehangen, onder meer in Groningen en het Lauwersmeergebied.

Long term use of some pesticides is killing off dung beetle populations

New research led by scientists at the University of Bristol has uncovered that long-term use of some pesticides to treat cattle for parasites is having a significantly detrimental effect on the dung beetle population. Researchers studied 24 cattle farms across south west England and found that farms that used certain pesticides had fewer species of dung beetle. Dr Bryony Sands, from the University's School of Biological Sciences, who led the research, said: "Dung beetles recycle dung pats on pastures, bringing the nutrients back into the soil and ensuring the pastures are fertile.

Nieuw advies EFSA voor residuen van bestrijdingsmiddelen in voeding voor zuigelingen en peuters

De Europese voedselveiligheidsautoriteit EFSA heeft een nieuw advies voor residuen van bestrijdingsmiddelen in voeding voor zuigelingen en peuters gepubliceerd. De voorstellen maken deel uit van een uitgebreide evaluatie van de veiligheid van residuen van bestrijdingsmiddelen in voedingsmiddelen die bedoeld zijn voor zuigelingen en jonge kinderen. De maximumgehalten van bepaalde soorten residuen van bestrijdingsmiddelen die aanwezig kunnen zijn in voedingsmiddelen, bedoeld voor zuigelingen en jonge kinderen, zouden opnieuw beoordeeld moeten worden.

Study finds 29 pesticides in Devon river

Researchers have found 29 different pesticides in a single river in Devon. Tests on four rivers in the county revealed 34 pesticides in total, as well as nine antimicrobials and veterinary drugs. Scientists said they were surprised and concerned by the results, and warned there would be harmful effects for plants and wildlife. The tests were carried out using a high-quality new technique created by scientists in Greenpeace Research Laboratories at the University of Exeter.

Scientists find widely used neonicotinoids in Ontario wild turkeys

Scientists with the Ontario Veterinary College at the University of Guelph and Environment and Climate Change Canada examined the livers of 40 wild turkeys in southern Ontario and found nine had detectable levels of neonicotinoids, a group of insecticides that coat the seeds of cash crops such as corn and soy beans to protect them from pests. The insecticide is taken up by the plant and distributed through its tissue as it grows.

Neonicotinoid residues in a long-distance migratory raptor

We present results on the presence of neonicotinoid residues in blood samples of a long-distant migratory food-specialist raptor, the European honey buzzard (Pernis apivorus). Further, we investigate the spatial relationship between neonicotinoid residue prevalence in honey buzzards with that of crop fields where neonicotinoids are typically used. A majority of all blood samples contained neonicotinoids, thiacloprid accounting for most of the prevalence.

Toxicokinetic-toxicodynamic models for three neonicotinoids and some aquatic macroinvertebrates

Exposure patterns in ecotoxicological experiments often do not match the exposure profiles for which a risk assessment needs to be performed. This limitation can be overcome by using toxicokinetic-toxicodynamic (TKTD) models for the prediction of effects under time-variable exposure. For the use of TKTD models in the environmental risk assessment of chemicals, it is required to calibrate and validate the model for specific compound–species combinations.