Exposure even to low levels of imidacloprid, a widely used pesticide, can harm the central nervous system of bees and may be a reason behind the global bee colony collapse, a National Taiwan University research team said yesterday in Taipei.
Reports from around the world in recent years have shown that the population of wild bees has rapidly declined in many parts of the world. As bees contribute to the pollination of many crop species, ensuring production of seeds in many flowering plants and playing an important role in the ecosystem, many scientists are concerned about the rapid decline in bee colonies.
The university formed an interdisciplinary research team in 2008 to study whether the collapse was caused by the prevalent use of pesticides. A special method that the team developed — putting a tattoo on experimental bees — was applied to track the bees and observe the effects of insecticides on them.
National Taiwan University entomology professor Yang En-cheng (楊恩誠) said researchers discovered that imidacloprid — an insecticide belonging to a class of chemicals called the neonicotinoids — can cause worker bees to lose their way back to their hives.
“Normally, worker bees fly back to their hives when they have suck enough nectar, but when they consume up to about 50ppb [parts per billion] of imidacloprid, they stay on the flower, rubbing their eyes. We can see that they are uncomfortable, and they don’t fly back immediately,” Yang said.
Moreover, the team observed that even exposure to low levels — or just 10ppb — of imidacloprid can cause harm to bee larvae, depriving them of their ability to form and retain memories as they grow, thus contributing to the decline of the bee population.
The use of imidacloprid on certain crops was banned by the EU last year, but it is still widely used in Taiwan, Yang said.
While Taiwan earns about NT$2.3 billion (US$76 million) from honey each year, the government should evaluate whether it should limit the use of imidacloprid and other neonicotinoids, he said.
The first global hotel Keys Selection by the Michelin Guide includes four hotels in Taiwan, Michelin announced yesterday. All four received the “Michelin One Key,” indicating guests are to experience a “very special stay” at any of the locations as the establishments are “a true gem with personality. Service always goes the extra mile, and the hotel provides much more than others in its price range.” Of the four hotels, three are located in Taipei and one in Taichung. In Taipei, the One Key accolades were awarded to the Capella Taipei, Kimpton Da An Taipei and Mandarin Oriental Taipei. Capella Taipei was described by
EVA Airways today confirmed the death of a flight attendant on Saturday upon their return to Taiwan and said an internal investigation has been launched, as criticism mounted over a social media post accusing the airline of failing to offer sufficient employee protections. According to the post, the flight attendant complained of feeling sick on board a flight, but was unable to take sick leave or access medical care. The crew member allegedly did not receive assistance from the chief purser, who failed to heed their requests for medical attention or call an ambulance once the flight landed, the post said. As sick
The Taichung District Court yesterday confirmed its final ruling that the marriage between teenage heir Lai (賴) and a man surnamed Hsia (夏) was legally invalid, preventing Hsia from inheriting Lai’s NT$500 million (US$16.37 million) estate. The court confirmed that Hsia chose not to appeal the civil judgement after the court handed down its ruling in June, making the decision final. In the June ruling, the court said that Lai, 18, and Hsia, 26, showed “no mutual admiration before the marriage” and that their interactions were “distant and unfamiliar.” The judge concluded that the couple lacked the “true intention of
Minister of Economic Affairs Kung Ming-hsin (龔明鑫) yesterday said that private-sector refiners are willing to stop buying Russian naphtha should the EU ask them to, after a group of non-governmental organizations, including the Centre for Research on Energy and Clean Air (CREA), criticized the nation’s continued business with the country. While Taiwan joined the US and its Western allies in putting broad sanctions on Russia after it invaded Ukraine in 2022, it did not explicitly ban imports of naphtha, a major hard-currency earner for Russia. While state-owned firms stopped importing Russian oil in 2023, there is no restriction on private companies to
RSS