Homehttps://server7.kproxy.com/servlet/redirect.srv/sruj/smyrwpoii/p2/Healthhttps://server7.kproxy.com/servlet/redirect.srv/sruj/smyrwpoii/p2/Mosquitoes have been almost completely wiped out on two Chinese islands
Mosquitoes have been almost completely wiped out on two Chinese islands
The Asian Tiger Mosquito population – the major source of bites and disease transmission – by up to 94%, reduced the number of reported human bites by 97%.
It is not the first attempt by researchers to reduce mosquito populations across the world. In 2018, scientists from the Imperial College of London used gene-editing tools to render female mosquitoes sterile, while males developed normal and continued spreading the genetic mutation.
Xi Zhiyong, a professor at Michigan State University, has been a longtime pioneer in this field of study. Running and mosquito factory in southern China, he previously attempted to use sterilized male mosquitoes to mate with unaltered females.
"We are building good mosquitoes that can help us fight the bad ones," Xi told CNN in 201
6.  An Asian Tiger mosquito feeds from someone's hand ” data-src-mini=”//cdn.cnn.com/cnnnext/dam/assets/140428161811-pagani-asian-tiger-mosquito-hp-video.jpg” data-src-xsmall=”//cdn.cnn.com/cnnnext/dam/assets/140428161811-pagani-asian-tiger-mosquito-story-body.jpg” data-src-small=”http://cdn.cnn.com/cnnnext/dam/assets/140428161811-pagani-asian-tiger-mosquito-story-top.jpg” data-src-medium=”//cdn.cnn.com/cnnnext/dam/assets/140428161811-pagani-asian-tiger-mosquito-horizontal-large-gallery.jpg” data-src-large=”//cdn.cnn.com/cnnnext/dam/assets/140428161811-pagani-asian-tiger-mosquito-horizontal-large-gallery.jpg” data-src-full16x9=”//cdn.cnn.com/cnnnext/dam/assets/140428161811-pagani-asian-tiger-mosquito-horizontal-large-gallery.jpg” data-src-mini1x1=”//cdn.cnn.com/cnnnext/dam/assets/140428161811-pagani-asian-tiger-mosquito-topics.jpg” data-demand-load=”not-loaded” data-eq-pts=”mini: 0, xsmall: 221, small: 308, medium: 461, large: 781″ src=”data:image/gif;base64,R0lGODlhEAAJAJEAAAAAAP///////wAAACH5BAEAAAIALAAAAAAQAAkAAAIKlI+py+0Po5yUFQA7″/>
In a new study published by the International Journal of Science, Xi and his colleagues
Female mosquitoes were sterilized with low level radiation while the males were infected with the bacteria Wolbachia, then both were released during peak breeding seasons in 2016 and in 2017 on two islands near Guangzhou city
In a statement, mosquito ecologist Peter Armbruster said the trio l was one of the most successful mosquito reduction trials to date given mosquitoes' stubborn survivability.
Experts said the Asian tiger mosquitoes are particularly hard to eradicate using conventional population control methods, such as pesticides and removing stagnant water where the insects lay their eggs ” data-src-mini=”//cdn.cnn.com/cnnnext/dam/assets/190522114416-mosquito-stock-small-169.jpg” data-src-xsmall=”//cdn.cnn.com/cnnnext/dam/assets/190522114416-mosquito-stock-medium-plus-169.jpg” data-src-small=”http://cdn.cnn.com/cnnnext/dam/assets/190522114416-mosquito-stock-large-169.jpg” data-src-medium=”//cdn.cnn.com/cnnnext/dam/assets/190522114416-mosquito-stock-exlarge-169.jpg” data-src-large=”//cdn.cnn.com/cnnnext/dam/assets/190522114416-mosquito-stock-super-169.jpg” data-src-full16x9=”//cdn.cnn.com/cnnnext/dam/assets/190522114416-mosquito-stock-full-169.jpg” data-src-mini1x1=”//cdn.cnn.com/cnnnext/dam/assets/190522114416-mosquito-stock-small-11.jpg” data-demand-load=”not-loaded” data-eq-pts=”mini: 0, xsmall: 221, small: 308, medium: 461, large: 781″ src=”data:image/gif;base64,R0lGODlhEAAJAJEAAAAAAP///////wAAACH5BAEAAAIALAAAAAAQAAkAAAIKlI+py+0Po5yUFQA7″/>
Guangzhou, a densely populated urban metropolis with and tropical climate, saw around 37,350 people infected with dengue fever during an outbreak in 2014.
This month, the Philippine health authorities declared a "national dengue alert" after more than 450 people were killed by the virus in just the first half of 2019.
There is currently no effective vaccine or treatment for most mosquito-transmitted diseases, leaving controlling the insect populations one of the most effective control methods, according to the International Journal of Science.
"A new tool like what is being described in this paper is very much needed," said Dobson.