Confirmed by field survey that honey bees decrease due to chronic exposure to neonicotinoid insecticide

ByJames Mann

To reduce the habitat of beesNeo NicotinoidIt is said that insecticide is affecting, but on the other hand it was pointed out that the neonicotinoid dosage given to honey bees at the time of experiment is too much compared with nature. Therefore, the research team of Canada verified the field in the corn cultivation area and revealed that the health of the honey began to deteriorate by chronically receiving the influence of the neonicotinoid insecticide.

Chronic exposure to neonicotinoids reduces honey bee health near corn crops | Science
http://science.sciencemag.org/content/356/6345/1395.full


Largest-ever study of controversial pesticides finds harm to bees: Nature News & amp; Comment
https://www.nature.com/news/largest-ever-study-of-controversial-pesticides-finds-harm-to-bees-1.22229

Maize is the most widely grown crop in the cultivated land of North America, and most seeds are treated with neonicotinoid drugs. And honeybee has recorded a high mortality rate in corn cultivation areas in Indiana, Ontario, and Quebec in the last ten years.

The research team conducted research on a total of 55 bee nests with five beekeeping pads 500 meters from the corn farm and six beekeeping places 3 km from the corn farm. Then, beekeeping bees near the corn farm, which are chronically exposed to neonicotinoid insecticides, are affected by their health, compared with honey bee at a beekeeping place away from maize farm I understood that there was. The case where the queen bee became absent, was seen in most of the nest in the case that the next queen did not appear in the herd and became a king group.

In addition, it was also shown that when the worker bee was given larvae for 9 days, the life expended by 23% compared to the control group, given the diet exposed to clothianidin (one of neonicotinoid pesticides) understood.


This result reinforces the traditional "Neonicotinoid harmfulness", and there is a possibility that the move toward regulation may accelerate in the future, but the direction of "not using pesticide" is difficult, and instead There is also concern that agricultural chemicals of other countries will have another influence.