And Nicole said, “They’re like tribbles.”
I was stunned. Marmorkrebs are totally like tribbles! How could I not have realized this before?
Dr. McCoy: [on reasons for the tribbles' high reproduction rate] Well, the nearest thing I can figure out is that they're born pregnant. Which seems to be quite a time saver.
Indeed, the original episode, “The Trouble With Tribbles,” contains this bit of dialogue that could be applied to any number of invasive species:
Spock: Surely you must have realized what would happen if you removed the tribbles from their predator-filled environment into an environment where their natural multiplicative proclivities would have no restraining factors.
Cyrano Jones: [all in one breath] Well, of cour... What did you say?
Spock: [irritated but patient] By removing the tribbles from their natural habitat, you have, so to speak, removed the cork from the bottle and allowed the genie to escape.
I am so going to use this comparison in a talk