Essentials of Ecology

CONCEPT 9-3 199

Purple loosestrife Nutria Salt cedar
(Tamarisk)

African honeybee

(“Killer bee”)

European starling

Marine toad
(Giant toad)

Hydrilla European wild boar

(Feral pig)

Japanese beetle

Accidentally Introduced Species

Deliberately Introduced Species

Water hyacinth

Sea lamprey

(attached to lake trout)

Eurasian ruffe Common pigeon

(Rock dove)

Argentina fire ant Brown tree snake

Formosan termite Zebra mussel Asian long-horned beetle Asian tiger mosquito Gypsy moth larvae

Figure 9-14 Some of the more than 7,100 harmful invasive (nonnative) species that have been deliberately or

accidentally introduced into the United States.