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
- Toyota (TM) to Build 1st US Battery Plant in North Carolinaon December 7, 2021 at 6:39 am
Also, the investment is expected to usher in an era of more affordable EVs for U.S. consumers. Toyota has been the king of hybrid vehicles since the introduction of its popular Prius compact vehicle.
- Maserati Hybrid range introduced in India; prices start at Rs 1.20 croreon December 2, 2021 at 10:40 pm
Maserati, the Italian luxury automaker has revealed the price range for its latest range of hybrid options in the country. The Ghibli Hybrid GT will be offered in the price range of Rs 1.20 crore ...
- MotorTrend Holiday Gift Guide Sponsored by RealTruckon November 29, 2021 at 2:45 pm
Besides the obvious benefit of being off the ground away from bugs, wildlife, rocks, and roots, this truck-mounted tent also features a pair of built-in sky panels, mosquito netting at the windows ...
- Clockwork Aquario reviewon November 29, 2021 at 12:54 pm
Just like scientists extracted DNA from amber encased mosquitoes and used it to create ... and the shooter/platform hybrid lunacy of Monster Lair. It is the latter that Clockwork Aquario is ...
- Stolen property worth ₹5.06 crore recovered in one yearon November 29, 2021 at 11:07 am
The City police has managed to recover stolen property worth ₹5.06 crore during the last one year. According to City Police Commissioner Chandragupta, property and cash worth ₹7.34 crore had ...
- The 7 Best Wagon Strollerson November 28, 2021 at 4:00 pm
Whether you’re a soon-to-be first-time parent or a veteran mom or dad of a couple cute kiddos, chances are you know to put a stroller on your baby wish-list. But when you delve deep into researching ...
- Should we bring back woolly mammoths? My long-read Q&A with Beth Shapiroon November 21, 2021 at 4:00 pm
And they could get back to this by back-breeding that hybrid individual with dairy cows ... crisis that’s going on right now. So I am super excited about the establishment of this company ...
- World COPD Day: Healthy lungs – never more importanton November 17, 2021 at 5:42 am
Also, commonly-used things like mosquito repellent coils used at home can cause COPD as exposure to the same at night was found to be equivalent to smoking 100 cigarettes together. Symptoms of ...
- Volvo XC90 petrol mild-hybrid goes on sale in Indiaon November 11, 2021 at 7:17 am
Volvo Car India has introduced its flagship offering – Volvo XC90, in the Indian market with a new petrol mild-hybrid engine. Recently, the brand launched the S90 and XC60 with the mild-hybrid ...
- What parents should know about Japanese Encephalitis especially during the rainy seasonon November 5, 2021 at 12:20 am
The JE virus is transmitted to humans from a bite of infected Culex species mosquitoes. The cycle between mosquitoes and pigs and wading birds maintains the virus, making humans the dead-end hosts.
via Bing News