Bee's Knees?

Huh! That's an odd bit of trivia. And it raises such an intriguing question, too.

One of the Japanese shows had an apiarist (is that the right word? A guy who studies bees?). He was talking about an invasion of big foreign bees that has been going on here in Japan for about the last five years. The thing is...
( David and Goliath, Bee Style? )

Do you want to explain how they adjusted so quickly to a new predator?