This story told by my fellow blogger eivindburkow at The Coastal House is well worth a look. It’s about pesticide resistance on Scottish salmon farms.
Organisms do evolve when we attack them with chemical coshes. In the sheep industry, worms fight back with resistance to anthelmintics. Human pathogens fight back with microbial resistance. These are just a few of the important examples.
Now it’s no surprise that sea lice fight back too. But when they fight back in a marine farm, the chemical cosh can affect wildlife and game. The Marine Stewardship Council (MSC) says this about environmental impacts of fish farming. But I see no mention there of pesticide resistance.