Never miss a story

Get subscribed to our newsletter


×
voa

Researchers say the bacteria appears to have changed part of the male insects' reproductive biology, so that female mosquitoes that mate with them lay eggs that do not hatch.

SYDNEY —Researchers in Australia have shown a bacteria can sterilize and eradicate a disease-carrying mosquito that is responsible for spreading dengue, yellow fever and Zika.

Three million male Aedes aegypti, or yellow fever mosquitoes, were released in the trial at three sites in Northern Queensland state. They were reared at James Cook University in Cairns and sterilized with a naturally-occurring bacteria called Wolbachia.


Researchers say the bacteria appears to have changed part of the male insects' reproductive biology, so that female mosquitoes that mate with them lay eggs that do not hatch.

The flying insects were released over a 20-week period in 2018. Mosquito numbers subsequently fell by more than 80%. When scientists returned the following year, they found one of the trial areas had almost no mosquitoes.

Follow NewsGram on Instagram to keep yourself updated.

Nigel Beebe is an associate professor at the University of Queensland and research scientist at the Commonwealth Scientific and Industrial Research Organization, or CSIRO. He hopes the sterilization method will eventually be used in developing countries.

"We wanted to show in a developed country that the technology was robust, we could mass rear mosquitoes. It is not very expensive to mass rear mosquitoes and it is really the separation of the males from the females," he said.

The Australian team plans to use a similar technique to suppress the virus-spreading Asian Tiger mosquito that has become established in the Torres Strait in northern Australia.

Aedes mosquitoes are dengue vectors Researchers elsewhere are looking at ways to use sterile male mosquitos to curb the spread of malaria, but associate professor Beebe has said it was a "complicated" challenge. Image source: wikimedia commons

"At the moment we have to use relatively sophisticated technology to do that. But we are now trying to build something that is much more robust and can be used in tropical countries and will be relatively cheap to actually be able separate the males from the females. The mass rearing of the mosquitoes is actually pretty cheap to do. So, I think, absolutely we will have application in developing countries," saId Beebe.

Also read: Decoded: Why Mosquitoes Bite You

Researchers elsewhere are looking at ways to use sterile male mosquitos to curb the spread of malaria, but associate professor Beebe has said it was a "complicated" challenge.

More than 40% of people worldwide suffer from mosquito-borne diseases. The Australian team hopes its "environmentally-friendly mosquito control" method will help tackle current and future outbreaks of dengue and other debilitating diseases. (VOA/RN)

(This article is originally written by Phil Mercer)

Keywords: Dengue, Australia, Research, Virus, Mosquitoes


Popular

IANS

"Our focus and USP at Forest Essentials has always been at delivering high quality Ayurvedic products in a sustainable way, with a global appeal.

One of Indi's leading luxurious Ayurveda skincare brands, Forest Essentials, announces its international foray with the London based Lookfantastic.com, Euroe's premium online beauty retailer. The partnership enables the brand to take significant strides towards its expansion globally starting with the launch in the United Kingdom. "Our focus and USP at Forest Essentials has always been at delivering high quality Ayurvedic products in a sustainable way, with a global appeal.

We firmly believe that the time is right for Forest Essentials to expand to the UK, as our first international footprint with Lookfantastic,' Europe's premium online beauty retailer. "The UK audience is well aware of Ayurveda and we are certain that the demand for our Made in India luxurious Ayurveda products, is going to continue to grow multifold, as consumers are today looking for moments of self-care, to feel better in this stressful period and we are well positioned to support this type of feel-good indulgence that consumers are seeking today," says Samrath Bedi, Executive Director, Forest Essentials. The brand's iconic product ranges, across skincare, body care and haircare will be available for purchase in the UK, including the Soundarya collection, crafted with 24k gold.

Keep Reading Show less
IANS

Khadi is no longer a dull, drab fabric meant only for politicians' wardrobes.

Khadi is no longer a dull, drab fabric meant only for politicians' wardrobes. A fashion show organised by the Khadi Gramodyog Board as part of the Azadi Ka Amrit Mahotsav to mark the 75th year of India's Independence showcased the use of Khadi in traditional, as well as, contemporary and festive wear. From lehengas in resplendent Khadi silk to western clothes and casual wear, the models on Thursday night displayed new facts of the fabric.

Several well-known Indian designers including Ritu Beri, Farah Ansari, Rina Dhaka, Asma Husain, Aditi Rastogi and Himmat Singh showcased their designs. Gaurav Gaur directed the fashion show with clothes like lehengas, kurtis, kurta pajamas and partywear.

Lucknow's chikankari and silk artisans also participated in the event. A wedding collection in Khadi was the highlight of the show. "The show was based on the concept 'Khadi for nation, Khadi for fashion' and the fabric for all costumes was provided by Khadi Gramodyog Board," said a spokesman. (IANS/ MBI)


Keep Reading Show less
Wikimedia Commons

Pat Gelsinger, CEO - Intel

Intel saw its stock tumbling by more than 8 percent after the chipmaker said the industry-wide component shortage affected its PC chip business during the third quarter (Q3). Intel CEO Pat Gelsinger told CNBC late on Thursday that he didn't expect the semiconductor shortage to end until 2023. "We're in the worst of it now, every quarter, next year we'll get incrementally better, but they're not going to have supply-demand balance until 2023," Gelsinger was quoted as saying.


The company delivered its Q3 results with revenue up 5 percent (year-over-year) driven by strong demand in its DCG and IoTG businesses, despite the highly constrained industry-wide supply environment. "Q3 revenue was $18.1 billion slightly below our guide due to shipping and supply constraints that impacted our businesses," George S. Davis, Chief Financial Officer, said in a statement. He also announced plans to retire from Intel in May 2022. In the third quarter, the company generated $9.9 billion in cash from operations and paid dividends of $1.4 billion.

Keep reading... Show less