When maintaining the delightful snails, Potamopyrgus antipodarum, in captivity (say in the lab, prior to infecting them with all sorts of trematodes), we feed them a micro algae called spirulina.
You might have heard of it. It has become popular in super food drinks and smoothies. If you see a green smoothy, it likely has this little micro algae. Additionally, many people have touted to me the great health benefits, and the anti-oxidants.
But I resisted. Because spirulina is not people food. It’s snail food.
But now, algae might infiltrate our food supply on a more permanent basis. Read about it here!
The way to kill invasive species, and thereby protect endangered species are brutal—traps, long-range rifles, and poisons—deployable only on a small scale and wildly indiscriminate. To excise the rat, say, from an ecosystem requires a sledgehammer that falls on many species.
All this is why some conservation biologists such as Karl Campbell has begun pushing for research into a much more precise and effective tool—one you might not associate with nature-loving conservationists. Self-perpetuating synthetic genetic machines called gene drives could someday alter not just one gene or one rat or even a population of rats but an entire species—of rats, mosquitoes, ticks, or any creature. And this biological technology promises to eliminate these destructive animals without shedding a drop of blood.
But the methods also contain the threat of unleashing another problem: They could change species, populations, and ecosystems in unintended and unstoppable ways.
Want to know more? Read about it here.