Scientists in Poland Work to Save Honeybees
Honeybees are in danger worldwide.
Their homes -- known as "colonies" -- are suffering from what scientists call Colony Collapse Disorder.
Scientists have linked the disorder to infections from harmful microorganisms and pesticides -- products meant to kill other insects.
Researchers also have blamed a sharp drop in the honeybee population to loss of the bees' natural habitat.
Polish researchers are working on ways to save honeybees. One of the diseases that affect honeybee colonies in Poland is nosemosis, also called nosema. It is a common fungi-based disease that affects adult bees.
Aneta Ptaszynska is a researcher with Maria Curie-Sklodowska University.
"Infected worker bees live for a very short time in the summer, about eight to 12 days, while they normally live 36 days. So the productivity of the whole bee family decreases and bees also have problems with passing (the) winter..."
Scientists believe some pesticides weaken the bees' natural resistance against disease. This makes it difficult for them to fight parasitic organisms. After eating food or drinking water containing pesticides, the bees begin to act strangely and soon die.
Scientists believe nosema is one of the main reasons the number of bees has dropped by 50 percent in Poland over the past 15 years.
Polish scientists say they have found a natural substance in flowers that is more than 90 percent effective in saving bees. They have created a drug from it. The drug is now being tested.
Scientists are warning that insecticides designed to kill mosquitoes carrying the Zika virus can also harm bees. They say such products should be used in affected areas only when it is dark -- after bees are asleep. And they say only chemicals that kill the mosquito larvae should be used.
Michael Steinkampf is a beekeeper.
"This particular strain is very toxic to mosquito larva but when it's put in the water it doesn't hurt the bees at all."
I'm Christopher Jones-Cruise.
1.in danger 处于危险中
When the dyke was in danger, the whole village rushed out to repair it.
2.known as 以...著称
He is known as a gifted orator.
3.natural habitat 自然栖息地
In their natural habitat in southern Africa, meerkats do not normally see snow.
4.natural substance 天然物质
In short, interferon is a natural substance on an unnatural mission.
1.Their homes -- known as "colonies" -- are suffering from what scientists call Colony Collapse Disorder.
suffering from 经历；承受
The crops are suffering from deficient rain.
My roses were suffering from fungus.
2.Scientists believe nosema is one of the main reasons the number of bees has dropped by 50 percent in Poland over the past 15 years.
dropped by 下跌了；顺便拜访
At the end of the afternoon I dropped by the West Wing to say good-bye.
Sales at GM dropped by a million and a half vehicles.
波兰研究人员正努力拯救蜜蜂 。孢子虫病是影响波兰蜂群的一大疾病 。这是一种常见的危害成年蜂的真菌类疾病 。
“夏季，被感染的工蜂存活的时间较短，大约为8到12天，而正常情况下可以存活36天 。因此，整个蜂群的产量会骤降，而蜜蜂也很难熬过冬天 。”
科学家们认为，有些杀虫剂削弱了蜜蜂的疾病抵抗力 。因此，蜜蜂很难抵抗寄生物感染 。蜜蜂接触含有杀虫剂的食物或水源后，行为开始出现反常，随后死亡 。
波兰科学家表示，他们在花朵中发现一种自然物质，该物质挽救蜜蜂的有效率高达90% 。他们还借此研制出一种新的杀虫剂 。目前该类药品正在检测中 。
科学家们警告称，某些杀虫剂虽可杀死携带寨卡病毒的蚊虫，但同样也会伤害蜜蜂 。他们表示，此类产品只能等天黑蜜蜂们睡着后在疫区使用 。他们表示，应该只使用能够杀害蚊虫幼体的杀虫剂 。