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Screw Worm Outbreak in Yemen
« on: May 09, 2008, 01:31:18 PM »

International Atomic Energy Agency

gehört zu den Vereinten Nationen. Der folgende Artikel beschreibt eines der Projekte, bei dem Insekten mit Strahlung sterilisiert werden. Die sterilisierten Insekten werden in die Natur entlassen und stören dort die Fortpflanzung. Auf diese Weise kann ohne jede Chemie oder sonstige Gefahr ein schädliches Insekt bekämpft werden, dies auch in großen und vor allem unzugänglichen Gebieten.

Ich darf das kopieren. :-)

Screw Worm Outbreak in Yemen

Delegation Seeks Emergency Assistance
Staff Report
30 April 2008

The screw worm fly lays its eggs in a cut or open wound of a warm-blooded animal.
(Photo: P. Pavlicek/IAEA)

Story Resources
IAEA Talk: Screw Worm Fly in Yemen, Podcast [.mp3]

FAO/IAEA Joint Division

Arab Organization for Agricultural Development (AOAD)

Yemen Screw Worm Outbreak

An outbreak of the insidious ´screw worm´ fly in Yemen, is threatening
livelihoods, in a country where rearing livestock is a traditional way of

In recent weeks, a Ministerial delegation was at the IAEA in Vienna,
Austria, to turn to the international community for emergency assistance
to fight the deadly pest.

The menacing fly lays its eggs in a cut or open wound of a warm-blooded
animal. The maggots then feast off the living flesh, and can kill the
animal if it´s not treated in time.

The outbreak hit the country´s coast late last year. Veterinarian, Mansoor
AlQadasi, General Director of the Central Veterinarian Laboratory, says
it´s the first official outbreak of ´old world´ screw worm in Yemen.

"There are about 20,00O cases of livestock affected. Most of these are
sheep and goats. We have also found some human cases -- mainly in children
and older people," Mr. AlQadasi said.

Mr. AlQadasi fears the fly, which travels up to 200 km, will spread

"This can lead to a severe impact on the lives of people. We have a huge
population who rely on animals. They do not own land, but they own
animals. It can lead to severe social and economical problems for those
families who totally rely on the marketing of animals and get income from
this. This is a source of his life," Mr. AlQadasi said.

Emergency assistance to fight the pest is needed. The United Nation´s
International Atomic Energy Agency, the Food and Agriculture Organisation
and the Arab Organization for Agricultural Development, are among those to

Entomologist, Udo Feldman, from the Joint FAO/IAEA division in Vienna
"Well initially it is quite obvious that more specialists, veterinarians,
need special training on identification of the larvae; on advising
farmers what to do; on treating the animals; on establishing reporting
structures. Also entomological monitoring, the techniques need to be
conveyed and that is what the IAEA can do right away," Mr. Feldman said.

The disease is curable if treated early. The animal´s wound is scraped
clean of maggots then insecticides are applied to kill any remaining eggs.

It´s thought the pest was introduced into Yemen after infected cattle were
imported from neighbouring countries.

"This insect pest is not restricting itself to one country, flies have no
passports, they just cross over -- we have to develop a regional approach.
That is the second part of what the FAO/IAEA can provide, to develop a
concept, assist the developing counties with strategies and policies to
address this problem in the longer term. But this needs to be a regional
approach where other countries, Saudi Arabia, Iraq and possibly Iran, Oman
and so forth need to be included," Mr. Feldman said.

Part of a possible long term approach, involves scientists and farmers
teaming together to fight the flies using the screw worm against itself.
It´s called the sterile insect technique. Essentially, it´s birth control
for flies. Millions of male screw worm flies are bred and sterilised with
radiation, then released into the wild. The technique has worked to
eradicate screw worm in North and Central America and in Libya.

"Libya in 1988 had an outbreak of new-world screw worm flies through a
shipment of live animals to North Africa, to Libya, the pest was also
exported. So a non-endemic, very dangerous pest was introduced. And at
that time, the international community also initiated an emergency
response because it was very dangerous to see the fly spreading. If it
would have arrived at the Nile Delta, it would have been the highway to
Africa with all wildlife endangered and so forth. The international
community responded very quickly and within four years, in 1992, the pest
was eradicated," Mr. Feldmann said.

According to Mr. Feldmann, the feasibility of approaches like the Sterile
Insect Technique needs to be assessed to fight pest diseases. As
increasingly vectors spread to new locations, brought about by global
trade and climate change.

"This is becoming more and more important in the context of increasing
international trade, climate change. Pest scenarios have developed quite a
dangerous and frightening development change. Agricultural pests, vectors
of insect diseases, are invading into areas where they were not reported
before, and at the IAEA/FAO Joint Division we have to develop techniques
and concepts to have at hand when the countries need it and this is
exactly the situation in Yemen now," Mr. Feldman said.

It is hoped the emergency assistance can stem the spread of screw worm
further in Yemen.

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