The writer puts forward three methods to stopping the spread of snakeheads in North America. Nevertheless, the professor demonstrates that none of the methods are likely to protect North America ecosystem.
First, in terms of making it illegal to transport and release snakeheads, the professor states that the snakeheads can spread to new waterways by themselves even without human’s transporting them. The reason is that snakeheads are able to live and move on land as long as they remain moist. So they can stay wet to reach a new lake or river.
Second, different from the belief in the reading that educating the fishers about snakeheads would reduce snakeheads’ population, the professor points out that it could end up with spreading snakeheads not reducing their number. When the fishers see the benefit to catch snakeheads, they would intentionally to introduce them to other lakes or rivers, even it is illegal. By dong this, they could catch more snakeheads and earn more money.
Finally, the professor contradicts the reading by saying that poisoning and restocking lakes or ponds is not a good idea. That’s because poisoning not only just kill snakeheads and other fishes, but also kill many small organisms, such as insects and amphibians which are the food source of native fishes. What’s more, these small organisms can not recover after being poisoned. As a result, it is not easy to restore the ecosystem by using poisoning.