A team of scientists at Cornell University in the USA (Cornell University) analyzed two dozen environmental factors to understand what reduces the number of bumblebees and reduces the boundaries of their habitat. They were shocked because the cause was fungicides, which were previously considered harmless to insects.
Insecticides work by killing insects. Fungicides are mostly overlooked because they are not intended for insects. But, as it turned out, they are not so harmless in relation to bumblebees. It surprised us.
said Scott MassArt, an assistant professor of entomology and lead author of a new study published November 15 in the journal Proceedings of the Royal Society, B.
Science used to study insecticides, such as neonicotinoids, that attack the central nervous system of beetles. New scientific work shows how fungicides affect bumblebees and bees. Chlorothalonil, a general-purpose fungicide often found near hives, turned out to be especially dangerous.
Data for the study was collected by Sydney Cameron, a professor of entomology at the University of Illinois. Based on this information, scientists found a connection between the use of fungicides, the prevalence of pathogens, and a decrease in the number of bumblebees that are endangered in the United States.
While fungicides control plant pathogens, bees collect their remainder when fed pollen and nectar. Since farms use both insecticides and fungicides, scientists are worried about their interaction.
Although most fungicides are relatively non-toxic to bees, many of them are known to interact with insecticides, which significantly increases the toxicity of the latter.
Chlorothalonil was associated with poor colony growth in bumblebees and increased vulnerability to nosematosis – a fatal intestinal infection in bumblebees and bees.
Nosematosis can have a devastating effect on bumblebees and honey bees. And exposure to fungicides can increase the bee’s susceptibility to this disease. – said MacArth.
For agriculture, bumblebees are a key component because of their ability to use “pollination with a buzz” – vibrating, they shake off pollen from flowers. Bees bring $ 170 billion to global agribusiness, according to 2012 global economic research and Cornell University research. In addition, the importance of the study is dictated by the fact that half of the pollination work in the USA is carried out by bumblebees and wild bees.
Recall that Aggeek previously wrote about tiny drones, which can replace real bees in the pollination process.
Based on materials from ScienceDaily.