日韩精品久久一区二区三区_亚洲色图p_亚洲综合在线最大成人_国产中出在线观看_日韩免费_亚洲综合在线一区

 
 
 

New findings about loss of bees

2012-04-06 14:34

 

Get Flash Player

Download

New findings about loss of bees

This is the VOA Special English Agriculture Report.

Bees add an estimated 18 billion dollars a year to the value of American crops. They pollinate flowers that become fruits, nuts and vegetables. But, in recent years, honeybee colonies in the United States and Europe have been shrinking. Scientists have proposed different theories to explain what is known as colony collapse disorder.

New research suggests that a commonly used group of insecticides could cause bees to have a hard time finding their way back to their hive.

The new research looks at the use of pesticides called neonicotinoids. They were first used in the 1990s. They are now put on the seeds of many major crops around the world. The seedlings absorb the chemical as they grow.

That means farmers do not need to spray a whole field. Instead there is a little bit of insecticide inside each plant -- including the pollen and nectar that the bees want.

There is not enough pesticide to kill them. But the new research in the journal Science says it may harm them anyway.

Researchers stuck microchips to the backs of the bees. These chips recorded the bees' movements as they came and went from their hive. The scientists fed some bees sugar water with a low dose of a neonicotinoid. The study found that these bees were about twice as likely not to return as other bees.

Mickael Henry from INRA, the French national agriculture research institute, says the bees basically get drunk.

MICKAEL HENRY: "Intoxicated honeybees with those small doses may just get lost and are not able to find their way back home."

For some crops around the world, wild pollinators like bumblebees are more important than honeybees. Dave Goulson at the University of Sterling in Britain worked on another study published in Science. He says the pesticides could help explain why bumblebee populations are also decreasing.

DAVE GOULSON: "There were 85 percent fewer queens produced when they'd been exposed to realistic field levels."

Bayer CropScience makes neonicotinoid pesticides. Company spokesman Jack Boyne disputed the findings.

JACK BOYNE: "Instead of dosing the animals at field-relevant concentrations as the authors intended, they instead dosed them at levels far greater than what would commonly be experienced in the field."

He also notes that researchers are studying other factors that could affect bee populations. These include parasites, diseases and stress caused by transporting beehives to farms.

Some European countries have banned the pesticides. And there are growing calls to ban them in the United States as well.

And that's the VOA Special English Agriculture Report. I'm Jim Tedder.

neonicotinoid: 新煙堿類殺蟲劑

nectar: 花蜜

Related stories:

The Teacher: Bee idioms 成語(yǔ)老師∶蜜蜂成語(yǔ)

New findings about disorder in bees

蜜蜂的“舞蹈”如何提高網(wǎng)絡(luò)服務(wù)器效率的?

Spelling bee的來(lái)源

(來(lái)源:VOA 編輯:旭燕)

 
中國(guó)日?qǐng)?bào)網(wǎng)英語(yǔ)點(diǎn)津版權(quán)說(shuō)明:凡注明來(lái)源為“中國(guó)日?qǐng)?bào)網(wǎng)英語(yǔ)點(diǎn)津:XXX(署名)”的原創(chuàng)作品,除與中國(guó)日?qǐng)?bào)網(wǎng)簽署英語(yǔ)點(diǎn)津內(nèi)容授權(quán)協(xié)議的網(wǎng)站外,其他任何網(wǎng)站或單位未經(jīng)允許不得非法盜鏈、轉(zhuǎn)載和使用,違者必究。如需使用,請(qǐng)與010-84883561聯(lián)系;凡本網(wǎng)注明“來(lái)源:XXX(非英語(yǔ)點(diǎn)津)”的作品,均轉(zhuǎn)載自其它媒體,目的在于傳播更多信息,其他媒體如需轉(zhuǎn)載,請(qǐng)與稿件來(lái)源方聯(lián)系,如產(chǎn)生任何問題與本網(wǎng)無(wú)關(guān);本網(wǎng)所發(fā)布的歌曲、電影片段,版權(quán)歸原作者所有,僅供學(xué)習(xí)與研究,如果侵權(quán),請(qǐng)?zhí)峁┌鏅?quán)證明,以便盡快刪除。

中國(guó)日?qǐng)?bào)網(wǎng)雙語(yǔ)新聞

掃描左側(cè)二維碼

添加Chinadaily_Mobile
你想看的我們這兒都有!

中國(guó)日?qǐng)?bào)雙語(yǔ)手機(jī)報(bào)

點(diǎn)擊左側(cè)圖標(biāo)查看訂閱方式

中國(guó)首份雙語(yǔ)手機(jī)報(bào)
學(xué)英語(yǔ)看資訊一個(gè)都不能少!

關(guān)注和訂閱

本文相關(guān)閱讀
人氣排行
搜熱詞
 
 
精華欄目
 

閱讀

詞匯

視聽

翻譯

口語(yǔ)

合作

 

關(guān)于我們 | 聯(lián)系方式 | 招聘信息

Copyright by chinadaily.com.cn. All rights reserved. None of this material may be used for any commercial or public use. Reproduction in whole or in part without permission is prohibited. 版權(quán)聲明:本網(wǎng)站所刊登的中國(guó)日?qǐng)?bào)網(wǎng)英語(yǔ)點(diǎn)津內(nèi)容,版權(quán)屬中國(guó)日?qǐng)?bào)網(wǎng)所有,未經(jīng)協(xié)議授權(quán),禁止下載使用。 歡迎愿意與本網(wǎng)站合作的單位或個(gè)人與我們聯(lián)系。

電話:8610-84883645

傳真:8610-84883500

Email: [email protected]

主站蜘蛛池模板: 91网站在线观看视频 | 大陆黄色网| 九色福利| 超碰人人在线 | 99久久精品免费观看国产 | 又黄又爽的网站 | 欧美日韩一区二区三区在线观看 | 91情侣在线偷精品国产 | 黄色尤物 | 国产91一区二这在线播放 | 偷拍自拍网址 | 清草在线视频精品 | 免费一看一级毛片 | 色噜噜狠狠狠狠色综合久不 | 欧美一区二区 | 最新亚洲视频 | 久草福利网 | 碰碰碰精品视频在线观看 | 五月天黄色网址 | 午夜小视频免费 | 午夜寂寞影视在线观看 | 欧美777精品久久久久网 | 久久久999| 亚洲欧洲高清有无 | 欧美日韩亚洲视频 | 大片在线免费观看 | 国产网址在线 | 国产欧美日本 | 国产精品自线在线播放 | 亚洲精品一区二区网址 | 成人在线免费视频观看 | 色婷婷色综合缴情在线 | 一区二区三区在线免费看 | 日本黄色视 | 中文在线一区二区 | 涩涩色综合亚洲悠悠色 | 国产精品1024永久观看 | 欧美日韩综合精品 | 六月激情 | 欧美激情高清 | 欧美激情视频二区三区 |