Taxonomic Group	Name	Year	Invasion Status	Population Status	Vectors
Fishes	Ameiurus catus	1949	Definite	Established	Fisheries Intentional
Nematodes	Anguillicola crassus*	2005	Definite	Established	Fisheries Accidental (not Oyster), Natural Dispersal
Arthropoda-Insects	Anisolabis maritima	1911	Definite	Established	Cargo, Dry Ballast
Tunicates	Ascidiella aspersa	2000	Definite	Established	Hull Fouling
Algae	Bonnemaisonia hamifera	2003	Definite	Established	Ballast Water, Hull Fouling
Tunicates	Botrylloides violaceus	2000	Definite	Established	Hull Fouling
Bryozoans	Bugula neritina	2000	Definite	Established	Hull Fouling
Bryozoans	Bugulina simplex	2003	Definite	Established	Hull Fouling
Crustaceans-Amphipods	Caprella mutica	2000	Definite	Established	Ballast Water, Hull Fouling
Fishes	Carassius auratus	1839	Definite	Established	Pet Release
Crustaceans-Crabs	Carcinus maenas	1893	Definite	Established	Ballast Water, Dry Ballast, Hull Fouling, Natural Dispersal
Crustaceans-Amphipods	Chelura terebrans	1953	Definite	Established	Hull Fouling
Algae	Codium fragile ssp. Fragile	2000	Definite	Established	Discarded Bait, Fisheries Accidental (not Oyster), Hull Fouling, Natural Dispersal, Oyster Accidental
Algae	Colpomenia peregrina*	2011	Definite	Established	Ballast Water, Hull Fouling, Natural Dispersal
Platyhelminthes	Convoluta convoluta*	1995	Definite	Established	Ballast Water, Hull Fouling, Natural Dispersal
Mollusks-Bivalves	Corbicula fluminea	2001	Definite	Established	Discarded Bait, Fisheries Accidental (not Oyster), Natural Dispersal, Pet Release
Cnidarians-Hydrozoans	Cordylophora caspia	1932	Definite	Established	Aquatic Plant Shipments, Fisheries Accidental (not Oyster), Hull Fouling
Crustaceans-Amphipods	Corophium volutator	2001	Definite	Established	None
Platyhelminthes	Cryptocotyle lingua*	2008	Definite	Established	Dry Ballast, Fisheries Accidental (not Oyster), Fisheries Intentional, Hull Fouling, Natural Dispersal
Fishes	Cyprinus carpio	1880	Definite	Established	Fisheries Accidental (not Oyster), Fisheries Intentional
Algae	Dasysiphonia japonica	2011	Definite	Established	Ballast Water, Hull Fouling, Natural Dispersal
Cnidarians-Anthozoans	Diadumene lineata	1899	Definite	Established	Hull Fouling
Tunicates	Didemnum vexillum	2006	Definite	Established	Hull Fouling
Tunicates	Diplosoma listerianum	2000	Definite	Established	Hull Fouling
Mollusks-Nudibranchs	Doris pseudoargus	2017	Definite	Established	None
Algae	Dumontia contorta*	2002	Definite	Established	Ballast Water, Hull Fouling
Algae	Grateloupia turuturu	2007	Definite	Established	Ballast Water, Hull Fouling
Annelids-Polychaetes	Hediste diversicolor	1963	Definite	Established	Ballast Water, Dry Ballast
Crustaceans-Crabs	Hemigrapsus sanguineus	1999	Definite	Established	Ballast Water, Hull Fouling, Natural Dispersal
Crustaceans-Isopods	Ianiropsis serricaudis	2007	Definite	Established	Ballast Water, Hull Fouling
Annelids-Polychaetes	Janua heterostropha	2000	Definite	Established	Hull Fouling
Crustaceans-Isopods	Ligia oceanica	1933	Definite	Established	Cargo, Dry Ballast
Mollusks-Gastropods	Littorina littorea	1872	Definite	Established	Dry Ballast, Hull Fouling, Natural Dispersal
Algae	Lomentaria clavellosa*	1963	Definite	Established	Ballast Water, Hull Fouling
Algae	Lomentaria orcadensis*	1873	Definite	Established	Hull Fouling
Algae	Melanosiphon intestinalis*	2007	Definite	Established	Ballast Water, Hull Fouling
Bryozoans	Membranipora membranacea	2000	Definite	Established	Ballast Water, Hull Fouling, Natural Dispersal
Crustaceans-Amphipods	Microdeutopus gryllotalpa	2000	Definite	Established	Ballast Water, Hull Fouling
Crustaceans-Amphipods	Microdeutopus gryllotalpa	2001	Definite	Established	Ballast Water, Hull Fouling
Fishes	Micropterus salmoides	1862	Definite	Established	Fisheries Intentional
Mollusks-Gastropods	Myosotella myosotis	1841	Definite	Established	Cargo, Dry Ballast
Mollusks-Bivalves	Mytilopsis leucophaeata	1995	Definite	Established	Ballast Water, Hull Fouling
Algae	Neopyropia koreana*	2005	Definite	Established	Ballast Water, Hull Fouling
Algae	Neopyropia yezoensis*	2004	Definite	Established	Ballast Water, Hull Fouling
Mollusks-Bivalves	Ostrea edulis	2000	Definite	Established	Ballast Water, Hull Fouling, Natural Dispersal, Oyster Intentional
Crustaceans-Shrimp	Palaemon elegans	2010	Definite	Established	Ballast Water
Crustaceans-Shrimp	Palaemon macrodactylus	2012	Definite	Established	Ballast Water
Arthropoda-Insects	Petrobius brevistylis*	1967	Definite	Established	Cargo, Dry Ballast
Crustaceans-Mysids	Praunus flexuosus	1972	Definite	Established	Ballast Water
Arthropoda-Insects	Pselactus spadix*	1936	Definite	Established	Cargo, Hull Fouling
Fishes	Scardinius erythrophthalmus*	1991	Definite	Established	Discarded Bait
Arthropoda-Insects	Sclerocona acutella*	2002	Definite	Established	Aquatic Plant Shipments, Cargo, Dry Ballast
Tunicates	Styela canopus	1852	Definite	Established	Hull Fouling
Tunicates	Styela clava	1970	Definite	Established	Hull Fouling
Mollusks-Bivalves	Teredo navalis	1893	Definite	Established	Ballast Water, Hull Fouling
Bryozoans	Tricellaria inopinata	2013	Definite	Established	Hull Fouling

* = Species summary still under review.

n170 (Massachusetts Bay) Summary