First 'Malaria-Proof' Mosquito Created

Gisg writes "The University of Arizona team reported that their genetically modified mosquitoes are immune to the malaria-causing parasite, a single-cell organism called Plasmodium. Riehle and his colleagues tested their genetically-altered mosquitoes by feeding them malaria-infested blood. Not even one mosquito became infected with the malaria parasite."

Comments

side effect

[blackraven14250]

Just wait for the population explosion in (random mammal) once these mosquitoes start taking over.

Re:side effect

[causality]

It's not so much that I'm afraid of GMOs in themselves, I'm much more afraid of Monsanto owning the rights to my food.

I'm personally more concerned about things like unforseen health effects of consuming GMO, GMOs becoming invasive species, gene transfer from crops to pests creating super invasive species, and becoming dependent on monocultured food stocks leading to blights and starvation.

Monsanto being monsanto does make some of those things more of an issue. They're a lot more cavalier with risks than many organizations would be, and they certainly are doing all they can to press the monoculture, but there are plenty of big risks that don't have anything to do with patents.

If it were anything less critical and vital than our food supply, then I'd say take the risk and see what happens. But things like "widespread famine" or "potential dependency on one vendor for food" are not my concept of the ideal failure mode.

When Microsoft implements vendorlock, it's annoying and inconvenient and maybe expensive. When Monsanto implements vendorlock, it's a whole new level of control. I've never seen a single action or statement from them, an unelected private company, that made them worthy of having the sort of power and control that they are reaching for. If you do some research and know anything about them, you likely would never do business with them or any subsidiaries for any reason. I would be hesitant to trust benevolent, self-denying, noble people with this level of control over the food supply. They want me to trust amoral, self-serving, corporate types with that power? Really? It'd be a funny joke if it were not so absurd and misguided.

Just consider one question: if genetically modified foods are so great, if only ignorant jackasses would ever have a reason to doubt their virtues, if the facts are on the side of those who want to sell them, then why does Monsanto fight so hard and spend so much money and lobby so much to prevent non-GMO food producers from labeling their products as such? Why is it so incredibly important to them that the FDA not allow such a statement of fact on a food label? Whatever happened to the concept of informed consent? Why would someone with all the facts on their side fear informed consent and fight so hard to prevent it? You see, something here just doesn't add up. Anyone who would deprive you of making an informed choice rightly deserves suspicion.

Re:side effect

[ChromeAeonium]

IF you are concerned about safety, FDA or no, there has been extensive research on it. Very many studies demonstrate no difference between GMOs and non-GM crops, and as a result, the general scientific consensus is that they're safe. Even if we assume Monsanto is influencing the FDA, I doubt they exert the same influence over countless relevant experts. Heck, even countries like Iran and China have developed their own homegrown strains of GMO. Iran made the worlds first Bt rice. Is Monsanto bribing off what one of most anti-US countries in the world?

Those who claim that GMOs are dangerous haven't done a very good job of proving their claims, either. For something to be dangerous, I think we can all agree it must have a reason, yes? Just being GMO is not a valid reason, it must have some sort of chemical compount, not present in the unmodified counterpart, that is dangerous. To date, no such compound from a commercially approved GMO has been identified. No genetic reasoning, no chemical pathways given for the production, and no proven cases of people actually hurt by them. No reason in theory, no evidence in practice. Starfruit and kiwi have presented more problems than GMOs, yet no one protests them. And of course, GMOs must be reviewed on a case by case basis, maybe someday the FDA royally screws up and one that kills people is released , but if it is, there'll be a reason for it. And since there is neither a known reason as to why any of the commercial GMOs would hurt anyone nor evidence that it happens, I guess the FDA just puts them in a catagory similar to Generally Recognized As Safe after the testing has been done.

As for the weeds, that is a very real problem. The thing there is, everyone saw that coming. Even Monsanto said it would happen. The problem was that there are only two traits for herbicide resistance, Starlink and Round-Up Ready, and only Round-Up Ready was extensively used. The problem wasn't overuse, but over-reliance. If there were more approved traits, and people used multiple herbicides, it would much more difficult for a weed to develop resistance. Even if it were to acquire the resistance through horizontal gene transfer, if there were multiple genes confirming resistance to multiple compounds, it is still very unlikely. These weeds aren't really 'superweeds' by the way, just regular weeds that are resistant to the most popular herbicide, so they can still be taken out by other chemicals and methods, but still, this never should have been allowed to happen in the first place. I don't know why it wasn't done, why those traits weren't pushed out there, maybe the FDA was lax in approving them, maybe activists protested, maybe the companies just didn't care, whatever, but yes, someone screwed the pooch on that one.

Re:side effect

[dr2chase]

No, AC is correct. If you carry 0 genes for SS, you are vulnerable to Malaria. If you carry 1 gene for SS, you are protected from malaria, but do not suffer the effects of SS. 2 genes for SS, you get SS.

Without DDT or drugs in a malarial region, if one or both parents are 1-SS, then half their children (statistically) will live. 1-SS/0-SS, half the children are 1-SS, and protected from malaria, half are 0-SS, and likely to succumb. 1-SS/1-SS, half are 1-SS and protected, .25 are 0-SS, and .25 are 2-SS and get SS disease.

Suppose the actual chance of dying from malaria before reproducing is P. IF P > .25P + .25, then the SS gene is favored. 3P/4 > 1/4, implies that P > 1/3. (Assuming no other causes of death, which complicates the math quite a bit.)

That's nice.

[Securityemo]

The malaria parasite is not a bacteria or virus, but could it evolve past this defense? And how would you make this variant of mosquito out-compete the normal, already established ones?

Re:That's nice.

[Daniel_Staal]

It's always possible it could evolve past this defense, but as a parasite it doesn't evolve as fast as a bacteria or virus. So if they can spread fast enough, it's possible the parasite wouldn't have the time.

As for how this variant would out-compete the normal... If it otherwise matches the normal, it's quite possible this would be enough in and of itself: It wouldn't be spending energy on feeding a common parasite, and therefore would be able to grow stronger & faster on the same amount of food as another mosquito that is infected.

Worst case really is if the trait waters down when they breed with regular mosquitos: Then it might be weak enough that some of the parasite survives, which would then be a way for it to get a chance at resistance...

Re:Mosquito infected with malaria???

[blueg3]

The mosquitoes are actually infected, it just doesn't significantly negatively affect them. That's a common way of being a carrier.

It already outcompetes.

[Tatarize]

Malaria harms mosquitoes too. An earlier attempt of this concept tried to outcompete factor and found that due to the added immunity the mosquito quickly rose to around 90% after a few generations. In theory, all they need to do is release this mosquito and it should have the immunity gene take over the vast majority of the mosquito population in short order and protect a lot of humans as a consequence.

Also, you can't really evolve past a defense if the wall is instantly 50 feet high. You need some leeway like not taking the full doses of antibiotics or a rather large quasi-species of HIV to have something in the works that kind-of works and then play off that. This makes the mosquitoes rather instantly immune and likely couldn't be evolved around, anymore than a deer could evolve a defense for a high powered sniper rifle that appeared on the scene rather suddenly in evolutionary terms.