It is the yellow fever mosquito that has developed a resistance to the mosquito repellent DEET, a substance used in mosquito repellents all over the world. In Sweden it is found in the products MyggA and Djungelolja (Jungle Oil). The capacity of mosquitoes to develop resistance has been shown to be hereditary.
“Through testing, we have found that yellow fever mosquitoes no long sense the smell of DEET and are thereby not repelled by it. This is because a certain type of sensory cell on the mosquito’s antenna is no longer active” says Rickard Ignell, a researcher at the Division for Chemical Ecology at SLU in Alnarp.
Rickard Ignell performed the research in collaboration with Rothamstead Research in the UK. The findings were recently published in the scientific journal Proceedings of National Academy of Sciences (PNAS).
The scientists have thus seen that the sensory cell on the mosquito’s antenna has stopped reacting to DEET. This have many explanations, such as the protein that binds in to DEET having mutated.
“More research is needed to find out what the mechanism is,” says Rickard Ignell.
The researchers are now urging restrictiveness in the use of DEET and other mosquito repellents on a large scale in a limited area, in order not to make other mosquito species resistant.
More Information: Rickard Ignell,Chemical Ecology Group, SLU in Alnarp, Rickard.Ignell@ltj.slu.se; +46-735 984 871
Pressofficer Carin Wrange; Carin.Wrange@adm.slu.se; +46-70 247 84 22Weitere Informationen:
http://www.chemicalecology.se Chemical Ecology Group
Carin Wrange | idw
First-of-its-kind chemical oscillator offers new level of molecular control
15.12.2017 | University of Texas at Austin
New technique could make captured carbon more valuable
15.12.2017 | DOE/Idaho National Laboratory
DNA molecules that follow specific instructions could offer more precise molecular control of synthetic chemical systems, a discovery that opens the door for engineers to create molecular machines with new and complex behaviors.
Researchers have created chemical amplifiers and a chemical oscillator using a systematic method that has the potential to embed sophisticated circuit...
MPQ scientists achieve long storage times for photonic quantum bits which break the lower bound for direct teleportation in a global quantum network.
Concerning the development of quantum memories for the realization of global quantum networks, scientists of the Quantum Dynamics Division led by Professor...
Researchers have developed a water cloaking concept based on electromagnetic forces that could eliminate an object's wake, greatly reducing its drag while...
Tiny pores at a cell's entryway act as miniature bouncers, letting in some electrically charged atoms--ions--but blocking others. Operating as exquisitely sensitive filters, these "ion channels" play a critical role in biological functions such as muscle contraction and the firing of brain cells.
To rapidly transport the right ions through the cell membrane, the tiny channels rely on a complex interplay between the ions and surrounding molecules,...
The miniaturization of the current technology of storage media is hindered by fundamental limits of quantum mechanics. A new approach consists in using so-called spin-crossover molecules as the smallest possible storage unit. Similar to normal hard drives, these special molecules can save information via their magnetic state. A research team from Kiel University has now managed to successfully place a new class of spin-crossover molecules onto a surface and to improve the molecule’s storage capacity. The storage density of conventional hard drives could therefore theoretically be increased by more than one hundred fold. The study has been published in the scientific journal Nano Letters.
Over the past few years, the building blocks of storage media have gotten ever smaller. But further miniaturization of the current technology is hindered by...
11.12.2017 | Event News
08.12.2017 | Event News
07.12.2017 | Event News
15.12.2017 | Life Sciences
15.12.2017 | Life Sciences
15.12.2017 | Physics and Astronomy