Home/食品安全/News

12/02/20

东非蝗虫入侵接近成熟危机

刺槐
版权：图像Harald Matern从Pixabay

Speed read

  • 蝗虫群正在东非肆虐农作物，肯尼亚遭受重创
  • 如果趋势持续下去，该地区可能需要尽快需要粮食援助
  • 用农药喷洒可能有助于控制，但可能会破坏重要的昆虫

经过：纳尔逊·曼德拉·奥格马（Nelson Mandela Ogema）

Republish

We encourage you to republish this article online and in print, it’s free under our creative commons attribution license, but please follow some simple guidelines:
  1. 您必须归功于我们的作者。
  2. You have to credit SciDev.Net — where possible include our logo with a link back to the original article.
  3. 您可以简单地运行文章的前几行，然后添加：“在SCIDEV.NET上阅读完整文章”，其中包含回到原始文章的链接。
  4. 如果您还想拍摄此故事中发布的图像，则需要使用原始来源确认使用它们。
  5. The easiest way to get the article on your site is to embed the code below.
有关更多信息，请查看我们的media page and republishing guidelines。

全文可在此处以HTML提供。

Press Ctrl-C to copy

发送to a friend

您在此页面上提供的详细信息将不会用于发送未经请求的电子邮件，也不会出售给第三方。请参阅隐私政策。

联合国粮食和农业组织警告[内罗毕]在东非和邻国的未来几周内，破坏性沙漠蝗虫的广泛孵化和运动将变成一场成熟的危机。beplay下载官网西西软件

“Breeding continues in the Horn of Africa, which will cause locusts to increase further in Ethiopia, Somalia and Kenya with new swarms forming in March and April,” explains the FAO in a forecast.

沙漠蝗虫已经摧毁了70,000公顷农田in Ethiopia and Somalia, threatening食品安全and livelihoods in both countries. According to the FAO, locust swarms of one square kilometer can eat the same amount of food in one day as about 35,000 people.

“Urgent efforts must be made to stop [the desert locusts] from increasing to protect the livelihoods of farmers and livestock holders.”

Keith Cressman, FAO

FAO说，这是肯尼亚70年来最糟糕的蝗虫入侵，而埃塞俄比亚和索马里则经历了25年前的这种幅度。

该地区在10月至12月之间经历了异常大雨，通常是半干旱地区的地区洪水，创造有利于蝗虫繁殖的条件。

沙漠蝗虫从肯尼亚传播到乌干达和坦桑尼亚
A map dated February 10, 2020 showing Desert Locust spread from Kenya to Uganda and Tanzania.
来源：粮农组织蝗虫手表

粮农组织高级蝗虫预测官基思·克雷斯曼（Keith Cressman）说：“蝗虫群已经开始产卵，另一代繁殖将增加蝗虫数字。”“必须采取紧急努力以阻止他们增加以保护农民的生计和家畜持有人。”

东非沙漠蝗虫控制组织总干事斯蒂芬·恩约卡（Stephen Njoka）告诉scidev.net：“气候变化可能是这种入侵的背后，例如，肯尼亚的当前降雨非常不寻常，使植被可用于害虫，并在土壤中创建合适的卵子地点。”

非洲之角，由吉布提（Jibouti），厄立特里亚（Eritrea），埃塞俄比亚和索马里（Somalia）组成，拥有约1.15亿人。Njoka认为，由于该地区的某些社区和文化已经发现蝗虫是营养的，因此鉴于昆虫数量的压倒性数量，食用它们可能是对控制的温和度量。

Njoka says that aerial and ground spraying with safe pesticides are the best ways to control locust invasion. The FAO says US$70 million is needed to support rapid control operations, such as spraying with insecticides.

肯尼亚的沙漠蝗虫群
沙漠蝗虫在肯尼亚。版权：FAO/Sven Torfinn（此图像已裁剪）。

But Daniel Otaye argues that the use of pesticides in the control of locusts is a source of concern, as pesticides might have devastating effects on other beneficial insects such as bees, green lacewings, and dragonflies, which contribute to ecosystemhealth。

你可能还喜欢

Otaye,副教授和主席Department of Biological Sciences, Egerton University in Kenya, says: “The invasion poses disastrous effects on the East African region that is still smarting from insecurity, droughts and aggressive floods.”

According to Otaye, the insects can devour fields of crops, such as maize and sorghum, and ravage pastures meant for livestock. He tellsscidev.netthat if the situation is left unchecked, the region might need additional food aid because of the anticipated crop and forage losses.

这件作品由Scidev.net的撒哈拉以南非洲英语桌子制作。