Assertion: sea lamprey | /r/HasProperty | invasive
Facets:
value: in the great lakes
type: LOCATION
Source sentences:
text: If sea lamprey are invasive, they are thought to have entered Lake Champlain during the 1800s from the Hudson River Estuary through the Hudson/Champlain Canal or possibly from the St. Lawrence River through the Richelieu River - both the Hudson and the St. Lawrence Rivers empty into the Atlantic Ocean.
text: They are considered an invasive species, have no natural enemies in the lakes, and prey on many species of commercial value, such as lake trout.
text: The sea lamprey, which does not occur in Missouri, is invasive in the Great Lakes and has caused serious declines in fish populations there.