Canadians are known as friendly folks, but these crabby brutes migrating from Canadian waters are better suited for the hockey rink.
Green crabs from Nova Scotia are the same species as their cousins that already inhabit Maine waters, but are ornerier and angrier, threatening to accelerate harm to the coastal ecosystem by gobbling up soft-shell clams and destroying native eel grass, a researcher said.
The docile green crabs shrink from a threat, while the newcomers are more apt to wave their pincers and charge.
“What we’re seeing is this insane level of aggressiveness,” Markus Frederich, a professor at the University of New England, said.
They’re each genetically distinct.
The new crab variant that originated in northern Europe is hardier and adapted to colder water than the more docile crab, which originally came from southern Europe.