 First direct evidence (of all animals), that proteinase inhibitor from eggs of "Pomacea canaliculata" interacts as trypsin inhibitor with protease of potential predators, has been reported in 2010.The snail kite, "Rostrhamus sociabilis", is a predator of this species in South America.The fire ant, "Solenopsis geminata", has also been observed to prey upon this species.