Why bees continue to disappear?


12/04/2012

In recent years, scientists have observed a mysterious mass disappearance of bees from hives around the world. A team of American researchers led by Professor Alex Liu tried to figure out the cause of unexplained bee pandemic.

Scientists claim that Imidacloprid - a pesticide widely used in agriculture is to blame. Experts claim to have convincing evidence for an association between the use of chemical substances and unknown to date rapid disappearance of the bees.

All this "bee" story began in 2006 when American beekeepers with horror began to notice that their bees do not return to the hive. Erupted bee pandemic affects not only the production of honey. Bees pollinate about one-third of crops, including fruits, nuts, vegetables, and plants that serve as food for livestock (clover, alfalfa). Experts say the loss of mass extinction of honey bees will make far more than a billion.

On bees can be affected in two ways: through the nectar of flowers or food, which they are treated to beekeepers. The main suspect in the disappearance of the bees was imidacloprid. In 2010, researchers conducted a 23-week study in four bee farms. In each of these three beehives were exposed to imidacloprid and one control hive, on the contrary carefully guarded against this pesticide. After 12 weeks, all experimental bees were alive. However, after 23 weeks, almost all have been exposed to imidacloprid hives died, control is completely survived.

The results of this study coincide with the alarming nature of the phenomenon of mass extinction of bees, in which emptied hives everywhere, except in places where the stored food reserves. For all other circumstances, such as infectious disease or insect infestation, dead bees found in the hives to or near them. And then they just flew away and did not return.

According to the materials greenrussia.ru


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