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URL: http://www.avianflutalk.com/forum_posts.asp?TID=37206 Printed Date: April 26 2024 at 12:37pm
Topic: Mosquito Control Trials Yield "Promising" ResultsPosted By: Technophobe
Subject: Mosquito Control Trials Yield "Promising" Results
Date Posted: April 16 2018 at 5:03am
Mosquitoes sterilised in bid to help stop the spread of dengue fever, zika virus
http://www.abc.net.au/farnorth/" rel="nofollow - ABC Far North
By Kristy Sexton-McGrath
Posted
http://www.abc.net.au/news/2018-03-08/mosquitos-smart-phones/9526870" rel="nofollow - Related Story:
Can a smart-phone app repel mosquitoes?
Australian scientists say the initial results of a project to desex deadly mosquitoes are promising.
Researchers
have released more than 1 million sterile Aedes aegypti mosquitoes in
several communities near Innisfail, south of Cairns, in far north
Queensland.
The mosquitoes, which are native to Africa, are responsible for spreading diseases like dengue fever and the zika virus.
Project
leader Nigel Beebe from the CSIRO said they were aiming to become the
first in the world to completely eradicate the mosquitoes from an urban
landscape.
"We are very, very happy with the technology, very
happy with the mass production and the results are looking very
encouraging," Dr Beebe said.
"There's
no doubt we are seeing a significant reduction in the number of Aedes
aegypti mosquitoes in those trial and control sites."
Scientists have been breeding millions of mosquitoes in laboratory conditions at James Cook University in Cairns through the https://verily.com/projects/interventions/debug/" rel="nofollow - Debug project, which is being funded by Google's sister company Verily.
The
mosquitoes are infected with the Wolbachia bacteria, which renders the
male mosquitoes sterile. The insects are then released into the wild at
the trial sites.
Dr Beebe said male mosquitoes did not bite or
spread disease, but when infected with the bacteria they played havoc
with female mosquitoes' reproductive systems.
"When the male that
has the bacteria mates with a female that does not have the bacteria, it
becomes incompatible and the embryo dies," Dr Beebe said.
"Essentially
these mosquitoes become sterile and if you can release lots of these
boy mosquitoes that carry the bacteria, you can shut down the
population."
It is not the first time researchers
have infected mosquitoes with the Wolbachia bacteria in order to stop
the spread of disease.
Scientists have been releasing infected mosquitoes in the Cairns region since 2011.
Dr
Beebe said the earlier project replaced mosquito populations with
insects that could not transmit viruses, but his research used male
mosquitoes to remove the population entirely.
Aiming to help the world control mosquitoes
Dr Beebe said his project could have far-reaching implications.
"We'd look into regions of the world that needed assistance in controlling their mosquitoes," Dr Beebe said.
"In the Torres Strait Islands, we have Asian tiger mosquitoes which also can transmit dengue and zika.
"It is an incredibly aggressive mosquito and models suggest that it will make its way down to Melbourne.
"So we'd love to try to focus the technology on that mosquito so we can remove it from the Torres Strait Islands."