It Takes a Mosquito to Fight a Mosquito

Jan 08, 2019 · 46 comments
Ian (Oregon)
What are bats going to eat?
MKathryn (Massachusetts )
Whenever I read an article like this, I feel uncomfortable. While it is laudable to want to reduce human suffering, I wonder if these disease carrying mosquitoes are filling some important ecological niche. Not long ago I read an excellent story in the New York Times Magazine about how insect populations are dying off. It was frightening. So this article by well meaning people raises more questions than it answers.
Bowden Quinn (Indianapolis)
The opening paragraph has a contradiction in terms. If humans are the most dangerous animal on the planet, then mosquitoes that carry a host of vectors for illnesses that affect humans could be the most beneficial animal on the planet.
Greg Shenaut (California)
@Bowden Quinn “dangerous to humans” is what was meant. So, the opposite would be “beneficial to humans”, which mosquitos ain't.
Maurie Beck (Northridge California)
“Any time we play God with nature, we need to worry about the consequences. But Wolbachia is natural” We’re not playing god, we’re playing human. In case you didn’t know it, humans are natural too, just like Wolbachia. Not everything that is natural is good. Poison hemlock is natural. Have a cup.
Brian (Oakland, CA)
This strategy will work for a while. Anyone who argues that we shouldn't be attacking mosquito diseases doesn't understand world or American history. The south was rife with malaria and other fevers, spread by mosquitoes, until the early 20th c. It's a primary reason S. Carolinian farmers had to "import" semi-resistant Africans - their own children died from malaria, unlike northern kids. DDT eliminated malaria in southern Europe and the U.S., but wasn't applied indiscriminately. It was sprayed on residential walls by hand. 'Silent Spring' was caused by agribiz using crop dusters to spray orders of magnitude more on crops. Malaria still kills 1/2 a million in Africa, and reduces productivity of 50 million more, yearly. It's caused by a complex organism that infects both mosquitoes and humans as part of its life cycle. A vaccine is theoretically possible - the real goal. Unfortunately, Americans and other developed world citizens are so removed from the scourge they don't appreciate the funding need.
Kate (nyc)
Is there a way to support this program, since it’s not going to be profitable?
Edward Blau (WI)
So the Luddites have already swarmed to the comments section to warn us of possible but not probable dire consequences of reducing or eliminating the death dealing mosquito population. I am sure this most recent attempt to do that using a bacteria to infect the mosquitoes that seems not nearly as effective and more cumbersome than prior experiments using gene altered mosquitoes was forced on scientists by the Luddites screaming Franken Bugs are being released when planned releases were publicized. I might be in a minority but I believe saving humans from malaria, Zika Virus, West Nile Virus, Dengue etc is far more important than doing nothing because of unfounded fears based on ignorance of medicine and science.
grace thorsen (<br/>)
@Edward Blau you don't get it..History tells us that you can take mosquitos out of the environment, but you can't take the environment out of our lives - we are all part of a delicate balance. Humans have the ability to absolutley devastate the earth, to such an extent we have never had before. And with our ability to devastate and eradicate, we also have a knowlege of how interconnected it all is - it is called ecology. If you think it is more important to eradicate mosquitos for human health, you are not understanding the whole equation.
Edward Blau (WI)
@grace thorsen Tell that to the parents of children dying of cerebral malaria or parents of children retarded from Zika Virus or families with a parent dying of West Nile encephalitis. That is the part of the equation I do understand.
grace thorsen (<br/>)
@Edward Blau two words - mosquito nets. Solution backed by Prez Carter for decades.
Clark (Chapel Hill, NC)
Let's consider for a moment that mosquitoes, of any species, are an element of the larger food chain, and thus necessary to supporting some other creature's biology, which in turn supports still other life, right on to us. Eliminating mosquito populations, with the kind of for-profit, wipe them out thinking indicated here . . . "Most Americans don’t worry about dengue and Zika — yet — but would love to see fewer mosquitoes. Dr. Stephen Dobson, a professor of entomology at the University of Kentucky, founded MosquitoMate, a for-profit company that works with mosquito-abatement programs in the United States. MosquitoMate’s largest projects are in Fresno, Calif., and Miami, with more than 150 acres treated in each city." is potentially catastrophic. Mosquitoes can be annoying, and yes, they can spread disease. But removing them entirely from the environment is a risky, dangerous, fool-hardy solution. Population replacement sounds to me like the most sustainable and environmentally balanced approach.
AKA (Nashville)
This is good news, though the article is a drawn out and written in a bad way for a Pulitzer Prize winner! All tropical countries are menaced by mosquitoes and insecticides are not the solution. Mosquitoes are equal-opportunity pests that menace rich and poor alike and need to be neutralized.
Marc Grobman (Fanwood NJ)
“Any time we play God with nature, we need to worry about the consequences. But Wolbachia is natural — most insect species already carry it. “ That statement is a red herring. Just because Wolbachia is “natural” does not mean we aren’t playing with nature, nor does it mean we don’t have to be concerned about possible consequences. A possible consequence: Suppose mosquito populations in an area are greatly reduced or eliminated. That might create a population collapse of animals that often consume mosquitoes, such as frogs, toads, lizards, and bats. And if frogs, toads, and lizards become less numerous, that could reduce the food supply for snakes (and many mammals). Lose the snakes, and you’ve removed or reduced major predators of mice and rats. I believe possibly trading a reduction of mosquitoes for an increase of mice and rats means we DO “need to worry,” or at least consider, the consequences. Please note: I’m not against the methods being employed. I’m only disagreeing with the claim that because Wolbachia is “natural” that it means we don’t have to be concerned about possible consequences.
Matt L (Chicago)
I hate mosquitos as I'm guessing most humans do, but I believe they serve a higher purpose of sorts. First, as others have mentioned, they serve as a building block of the food chain. Second, they keep our forests safe...from us! If mosquitos were to dwindle in number or their health impact become less severe, I imagine that major swaths of tropical forests could be threatened.
grace thorsen (<br/>)
This is a terrible idea and I can't believe we have not learned from such ecological disasters as the introduction of kudzu to control dust, and the cane toad. Please stop this program now - mosquitos are the krill of the earth, and many many species relie on them for food. https://www.orkin.com/other/mosquitoes/mosquito-predators/
CK (Christchurch NZ)
I use tea tree oil for everything. I put tee tree oil on mosquito bites and it takes away the sting and doesn't get infected. I use Thursday Plantation tee tree oil for everything as it's 100% pure tea tree oil. I used to be allergic to bee stings until I discovered tea tree oil and put tea tree oil on them daily and after three days the bee sting has stopped being itchy and cleared up. Just had a number of stings on the sole of my foot and all gone after three days. In winter I put some on a tissue and keep near bed so as to not get flu or cold. I've also read it's the only thing that is resistant to superbugs.
Svirchev (Route 66)
Can anyone explain what mosquitoes are good for? Flies and such at least clean up huge amounts of deceased animal life, but mosquitoes seem to have no purpose other than annoyance to animals & humans plus the spread of disease.
Marc Grobman (Fanwood NJ)
Mosquitoes serve as a major food source for frogs, toads, lizards, and bats. The first three are major food sources for snakes, mammals, and raptors (falcons, hawks, owls, etc). If snakes and raptors have less to eat, then we lose major predators of mice and rats. It’s possible reducing the mosquito population could mean an increase in mice and rat populations.
Svirchev (Route 66)
@Marc Grobman Thanks for this, there is a balance and 'feedback' mechanism in nature for good reasons in spite of mosquitoes being a disease-inducer and major annoyance for humans.
JackRussell (Wimberley TX)
@Svirchev Purple Martins eat approximately 1,000 mosquitos daily.
Richard Mclaughlin (Altoona PA)
If humans are the most dangerous animal, what about the hundreds of thousands of who won't die annually due to mosquito borne diseases? Which is the greater danger?
Say what (Houston, Texas)
@Richard Mclaughlin You have a point, but I believe the most dangerous humans are living in the developing countries, these are the ones creating havoc in nature, global warming is not being caused by people in Africa. Unfortunately the poorest are the most succeptible victims of mosquito borne diseases.
c harris (Candler, NC)
Mosquitoes can't decide which virus they carry. The mosquitoes are like any other animal they want to transmit their genes. They need blood they don't have a conscious disease spreading strategy. Global warming has moved the mosquito population to the north into what used to be more temperate regions. Certainly pesticides are a blunt instrument to attack the problem. New genetic efforts seem the only the way to attack the problem but then there is always the threat of unintended consequences.
Dr If (Bk)
Really interesting article, but honestly it’s not true about Townsville: its a horrible, ugly city, and anybody who makes the trip all the way there has made a terrible mistake and needs to get out as quickly as possible (preferably to the Great Barrier Reef while it’s still mostly alive).
Bruce Sterman (New York, NY)
Would really love to see a follow up on what would happen up the food chain if mosquitoes were eliminated.
Jess (DC)
@Bruce Sterman While it's hard to know exactly what would happen, here are a few articles about it. Many researchers think other insects would fill the niche. https://www.nature.com/news/2010/100721/full/466432a.html https://www.bbc.com/news/magazine-35408835
Marc Grobman (Fanwood NJ)
Yes! That was a major defect of the article, especially coupled with the claim that we don’t have to worry about the consequences because the process is “natural.”
Tryp (SC)
@Bruce Sterman Although this is an interesting question, it is not really relevant to this form of transmission control. The mosquitoes are still there -- they simply become less efficient at supporting the dengue fever pathogen. Also, for most methods of genetic (or sexually transmissible) control, only one species will be targeted. If, for example, Aedes aegypti were eliminated, the other native species would still be present to feed insect-eating birds and bats (according to the South Carolina Department of Health and Environmental Control there are 61 species of mosquito in my state).
DD (LA, CA)
Makes you wonder about those folks in the Keys in Florida who constantly fight against programs like these to eradicate mosquitos.
JackRussell (Wimberley TX)
@DD It is profitable and honorable to be elected to a MOSQUITO BOARD in the Florida Panhandle. Think an elected local official in your area. Prestigious. With a salary.
William Case (United States)
Mosquitos are far more dangerous to humans than other humans. Each year about 2.7 million people are killed by Mosquito-born diseases.
DD (LA, CA)
@William Case But hunger kills more. And keep in mind, starvation arises from political causes (ie, man-made) and not from a lack of resources. The United Nations estimated last year 25,000 people still die of hunger daily. That means more than 9.1 million people die of hunger every year.
David Lloyd-Jones (Toronto, Canada)
"That’s the mosquito that carries Zika and dengue, which infects 400 million people per year." it sez here. This is confusing, even if we ignore the plural subject and singular verb. The population of Africa is about a billion-two. Does everybody get these diseases every three years, or one this three and then the other the next? Or do we toss in Asia for another 4.7 billion people? OK, everybody gets these diseases four times in a sixty-year lifetime, is that it? The disease that's endemic here is the inability of many journalists to get the idea of rates, a this per that, straight in their heads, in their notes, and then in their articles. There is obviously a muddle of some sort here, and I wish the editors of the Times would innoculate their staff.
DD (LA, CA)
@David Lloyd-Jones You could reasonably argue that the subject of the sentence you cite is "mosquito," not "Zika and dengue." Thus it is the mosquito that infects 400m people each year, with either one of those diseases. Not to say, however, that Times stories couldn't be better edited.
David Lloyd-Jones (Toronto, Canada)
@DD Perfectly plausible, DD, but what about these 400s of millions over lots and lots of years? That's the problem that should have infected us all several times by now.
manfred marcus (Bolivia)
Thank you for a most interesting angle of what science, and technology, can achieve to stop mosquito-infected diseases. Given that the Wolbachia effect may simulate antiviotic resistance as time goes by, may we assume there is still research towards vaccination?
Bob (Asheville)
Are there consequences up the food chain? Who eats mosquitos, or needs mosquitos for some other purpose?
Peggy (KY)
@Bob My comment too. All up the chain mosquitos are in the food chain for nymphs, larvae, fish,amphibians, reptiles birds, some bats. If mosquitos are irradicated in a given area, goodbye many other species.
mlbex (California)
@Peggy: I'm fairly certain that irradiating a mosquito does not make it radioactive.
Gil (LI, NY)
@Bob This is my concern too. Not with the non carrying population but with the elimination strategy.
Paul Adams (Stony Brook)
Unfortunately this article gives no hint of why Wolbachia-infected mosquitoes have reduced ability to transmit viral diseases. Here is a nice explanation from the World Mosquito Program: "Wolbachia works in two ways within a mosquito. The first way is to boost the natural immune system of the mosquito to make it harder for the mosquito to support the Zika, dengue or chikungunya infection. If the mosquito can’t get infected, then it can’t transmit these viruses to people. The second way Wolbachia works is by competing against viruses for key molecules like cholesterol. Both the viruses and Wolbachia need cholesterol to survive inside the mosquito. When Wolbachia is present, it consumes these molecules and makes it harder for the viruses to grow. If it’s harder for the viruses to grow, then it’s harder for them to be transmitted."
Scooter (Philly)
@Paul Adams - Thanks for clarifying. I also noticed the absence of any explanation for why the Wolbachia-infected mosquitoes are the "good" ones. I'm perplexed as to why the information you provided wasn't included in the article. Seems like a pretty crucial point.
mlbex (California)
@Paul Adams: Cholesterol? Really? Just give then enough statins so that the viruses will starve and the mosquitoes will be healthy. (Turn up your humor detectors please).
MLK (Boston)
@Paul Adams Thank you for this. I was just going to Google Wolbachia because this article explains nothing.
Ann O. Dyne (Unglaciated Indiana)
"the job will have to be done by governments, because there’s little profit in it" What say ye, Repubs? If you are true-to-form, this solution will be abandoned, because 'the market' is bypassed.