Health
Mosquitoes can be controlled with bee-safe pesticides: research
New research suggests that genetic discoveries of mosquitoes may help scientists prevent nasty and sometimes dangerous insects from reaching reproductive maturity.
When studying Mibae at the University of California, Riverside in 2018, Riverside entomologist Naoki Yamanaka said he discovered a transporter protein that carries an important hormone called ecdysone through the body of a small insect. Known as the “molting hormone,” Ecdysone is present in all insect species and is involved in the growth of eggs into reproductive adults. For example, fruit flies have four different transporter proteins that carry this hormone.
Yamanaka began testing other insects for these transporter proteins, and all the species he tested had these transporters. However, in this new study, Yamanaka found that mosquitoes, and more specifically mosquitoes known to carry viruses such as Zika and yellow fever, lack one of these important transporters. He said he found that he was.
“This major thing, for some reason, is strangely lacking in mosquitoes,” Yamanaka said. In a press release on tuesday.
According to Yamanaka, this finding could turn this species of mosquito into a “Peter Pan” that is unable to reach reproductive maturity, thus limiting its fertility.Yamanaka Published his findings In the minutes of the National Academy of Sciences on Monday.
“We can develop chemicals that block the function of these ecdysone transporters, but they do not affect the original transporters, which are very important to other insects,” says Yamanaka.
This can create pesticides that specifically target this type of mosquito, but adversely affect other important insect populations (such as bees and other pollen maters) that have extra transporters that are unaffected. It means that it does not reach. matured.
“The possibility of off-target effects is low,” Yamanaka said.
Yamanaka, funded by the National Institutes of Health, is researching chemicals that may block these transporters of mosquitoes, and continues to study other species of ecdysone hormones.
Mosquito population management methods have long been sought after by the scientific community. One of the methods already used is to release sterile male mosquitoes to the wild. This eliminates the need for pesticides that can endanger other insect species. However, Yamanaka said it is important to find other population control methods that may function in a variety of environments, especially as hot and humid climates have a positive impact on mosquito populations. rice field.
“It is impossible to exterminate mosquitoes,” Yamanaka said. “(But) relying on one tool to control them is dangerous. When the climate gets hot, it creates more favorable conditions for them to grow and they are likely to be a bigger problem. only.”
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