Interbreeding of two malaria mosquito species in the West African country of Mali has resulted in a “super mosquito” hybrid that’s resistant to insecticide-treated bed nets.
The research, published Jan. 6 in the Proceedings of the National Academy of Sciences, “provides convincing evidence indicating that a man-made change in the environment — the introduction of insecticides — has altered the evolutionary relationship between two species, in this case a breakdown in the reproductive isolation that separates them,” said Lanzaro, who is director of the Vector Genetics Laboratory and professor in the Department of Pathology, Microbiology and Immunology in the School of Veterinary Medicine.
“What we provide in this new paper is an example of one unusual mechanism that has promoted the rapid evolution of insecticide resistance in one of the major malaria mosquito species.”
Anopheles gambiae, a major malaria vector, is interbreeding with isolated pockets of another malaria mosquito, A. coluzzii. Entomologists initially considered them as the “M and S forms” of Anopheles gambiae. They are now recognized as separate species.
The insecticide resistance came as no surprise. “Growing resistance has been observed for some time,” Lanzaro said. “Recently it has reached a level at some localities in Africa where it is resulting in the failure of the nets to provide meaningful control, and it is my opinion that this will increase.”
Lanzaro credits insecticide-treated nets with saving many thousands, probably tens of thousands of lives in Mali alone. The World Health Organization’s World Malaria Report indicates that deaths from malaria worldwide have decreased by 47 percent since 2000. Much of that is attributed to the insecticide-treated bed nets.
However, it was just a matter of time for insecticide resistance to emerge, medical entomologists and epidemiologist agree. Now there’s “an urgent need to develop new and effective malaria vector control strategies,” Lanzaro said. A number of new strategies are in development, including new insecticides, biological agents — including mosquito-killing bacteria and fungi — and genetic manipulation of mosquitoes aimed at either killing them or altering their ability to transmit the malaria parasite.
The Latest on: Hybrid super mosquito
via Google News
The Latest on: Hybrid super mosquito
- 'Ground-breaking' unmanned combat aircraft project in Northern Irelandon January 24, 2021 at 8:21 pm
Work on the aircraft, nicknamed the "loyal wingman", is set to begin after £30m of government investment and Spirit AeroSystems in Belfast has been selected to lead Team Mosquito in the next ...
- Study: Colleges can prevent 96 pc of COVID-19 infections with common measureson January 23, 2021 at 8:11 am
"Therefore, commitment to mask-wearing and extensive social distancing, including canceling large gatherings and reducing class sizes with a hybrid education system, remains the primary strategy ...
- Highly efficient grid-scale electricity storage at fifth of coston January 22, 2021 at 7:42 am
The energy density of a hybrid flow battery, especially the polysulphide/air system (S-Air), is 500 times higher than pumped hydroelectric storage. It is also so much more compact and can be ...
- Inspect smart city works: PIL pleaon January 21, 2021 at 12:44 am
This could become a breeding ground for mosquitoes and cause diseases like dengue. With so many irregularities in the implementation, there must be an inspections of the works carried out so far ...
- 45,500-Year-Old Sulawesi Warty Pig Painting Found in Indonesian Caveon January 14, 2021 at 8:13 am
A team of archaeologists from Australia and Indonesia has discovered two figurative paintings of the Sulawesi warty pig (Sus celebensis) — a species of small (40 to 85 kg), short-legged pig with ...
- OPINION: Raw vegan awakeningon January 2, 2021 at 1:19 am
They are not hybrid, they are not genetically modified ... for instance – insects. Mosquitoes are attracted to mucus and acid, they can smell it in the blood, just think about that for ...
- From Mini to McLaren: our favourite new cars of 2020on December 28, 2020 at 12:23 am
Although hamstrung by its lack of a hybrid option, we reckon the £158,000 ... ‘The DBX is a thoroughbred, as purely focused on being a super-SUV as a Range Rover is on being a luxury SUV.
- Insecticide-Drenched Nets Could Have Encouraged The Emergence Of Resistant Hybrid "Super" Mosquitoeson January 14, 2015 at 7:43 am
What’s more, scientists believe that the introduction of these nets could have promoted the emergence of these hybrid “super mosquitoes.” Millions of these mosquito nets are delivered yearly ...
- 12 of the best travel systems for newborn babieson October 30, 2014 at 3:29 am
With its super soft bamboo lining and quilted padding ... According to MFM Reviews Editor, Christy, who reviewed the Cruz with her newborn, it is an ideal all-round hybrid pushchair that performs well ...
via Bing News