SeaLifeBase
Introductions from elsewhere to 'Atlantic, Northeast' (with unknowns)

n=338 | Species introduction records list
 
# Species Year Period From - To Reason Established in the wild Ref. no.
1 Acartia tonsa   19th century Unknown. - Southampton Water.  accidental with ships  probably yes 001314
2 Acartia tonsa  1916 1900-1924 Western North Atlantic - Zuiderzee, Denmark  biofouling  Unknown 003224
3 Acartia tonsa  1916 1900-1924 Atlantic, Western Central - United Kingdom  unknown  yes 074657
4 Acartia tonsa  1931 1925-1949 Pacific and Western Atlantic. - North Sea  accidental with ships  Unknown 003700
5 Agardhiella subulata   1950-1974 United States of America - United Kingdom  unknown  yes 074657
6 Alloeocarpa loculosa   unknown Not specified - Azores Island  accidental with ships  Unknown 003512
7 Ameira divagans   1975-present Western Atlantic. - Baltic Sea.  accidental with ships  Unknown 003700
8 Ammothea hilgendorfi  1978 1975-present unknown - United Kingdom  unknown  yes 074657
9 Ammothea hilgendorfi  1978 19th century Asia outside Western Palaearctic. - Southampton Water.  accidental with ships  probably yes 001314
10 Amphibalanus amphitrite   unknown Afghanistan - Ireland  accidental  yes 074657
11 Amphibalanus amphitrite  1937 1925-1949 Pacific - United Kingdom  unknown  yes 074657
12 Amphibalanus amphitrite  1937 19th century Indo-Pacific - Shoreham Harbour.  accidental with ships  yes 001314
13 Amphibalanus amphitrite  1962 1950-1974 Not specified - Netherlands  accidental  probably no 074657
14 Amphibalanus amphitrite  1966 1950-1974 Tropical area (not specified) - Marine waters of Ireland  biofouling  no 074339
15 Amphibalanus eburneus  1997 1975-present East coast of North America - Not specified  biofouling  Unknown 003512
16 Amphibalanus improvisus   19th century Southern America - Brackish waters of Ireland  accidental with ships  yes 074339
17 Amphibalanus improvisus  1858 18th century Western Atlantic. - North Sea.  accidental with ships  Unknown 003700
18 Aphelochaeta marioni  1938 1925-1949 Unclear. - North Sea.  unknown  Unknown 003700
19 Astacus astacus  1981 1975-present Germany - United Kingdom  research  probably no 074657
20 Aulacomya atra  1994 1975-present Peru / Chile / Argentina - United Kingdom  unknown  yes 074657
21 Aulacomya atra  1994 1975-present unknown - United Kingdom  unknown  unknown 074657
22 Aulacomya atra  1994 1975-present Not specified - Moray Firth  accidental with ships  no 003216
23 Balanus trigonus  1887 18th century Not specified - Not specified  accidental with ships  Unknown 003512
24 Botrylloides violaceus  2006 1975-present Northwest Pacific - Marine waters of Ireland  accidental with ships  yes 074339
25 Botryllus schlosseri  1971 1950-1974 Not specified - Azores Island  biofouling  Unknown 003512
26 Bougainvillia macloviana  1895 18th century Antarctic Waters. - North Sea.  accidental with ships  Unknown 003700
27 Brachidontes exustus  1977 1975-present Western Atlantic - Marine waters of Ireland  other reasons  no 074339
28 Callinectes sapidus   unknown Unknown - Denmark  unknown  Unknown 000367
29 Callinectes sapidus   unknown Unknown - Netherlands  unknown  Unknown 000367
30 Callinectes sapidus  1964 1950-1974 Northwest Atlantic. - North Sea.  accidental with ships  Unknown 003700
31 Caprella mutica   19th century Asia outside Western Palaearctic. - Scotland and south coast.  accidental with ships  yes 001314
32 Caprella mutica  2003 1975-present Northwest Pacific - Marine waters of Ireland  biofouling  yes 074339
33 Caprella mutica  2004 1975-present Pacific. - North Sea.  accidental with ships  Unknown 003700
34 Carcinus maenas  1857 18th century Atlantic Europe - Not specified  unknown  Unknown 003512
35 Caulleriella killariensis  1972 1950-1974 Unclear. - North Sea.  aquaculture  Unknown 003700
36 Cercopagis pengoi   1975-present unknown - Gulf of Riga  ballast water   125904
37 Cercopagis pengoi  1992 1975-present Ponto-Caspian and the Aral Sea - Finland  ballast water  yes 074657
38 Cercopagis pengoi  1992 1975-present Ponto-Caspian waters - Gulf of Finland  ballast water  yes 007354
39 Cercopagis pengoi  1992 1975-present Ponto-Caspian waters - Gulf of Finland  ballast water  Unknown 007985
40 Cercopagis pengoi  1992 1975-present Ponto-Caspian and the Aral Sea - Sweden  ballast water  yes 074657
41 Cercopagis pengoi  1992 1975-present Ponto-Caspian and the Aral Sea - Estonia  ballast water  yes 074657
42 Cercopagis pengoi  1992 1975-present Ponto-Caspian waters - Gulf of Finland  ballast water  Unknown 007985
43 Cercopagis pengoi  1999 1975-present Ponto-Caspian. - Gulf of Gdańsk, Baltic Sea  diffused from other countries  Unknown 007354
44 Cercopagis pengoi  1999 1975-present unknown - Lithuania  ballast water   069779
45 Cercopagis pengoi  2004 1975-present Ponto-Caspian Region. - Baltic Sea.  diffused from other countries  Unknown 003700
46 Chelicorophium curvispinum  2005 1975-present Curonian Lagoon - Narva Bay  accidental with ships  probably yes 125635
47 Cherax tenuimanus   unknown Australia - United Kingdom  ornamental  probably no 074657
48 Cherax tenuimanus   unknown Australia - Belgium  unknown   074657
49 Cherax tenuimanus   unknown Australia - Germany  unknown   074657
50 Cherax tenuimanus   unknown Australia - Sweden  unknown   074657
51 Chionoecetes opilio   1975-present unknown - Finnmark and Svalbard  unknown   112806
52 Chionoecetes opilio  1996 1975-present unknown - Barents Sea  ballast water  probably yes 125523
53 Choromytilus chorus  1965 1950-1974 Chile - Wales  other reasons  Unknown 007794
54 Cinachyrella alloclada  1989 1975-present Caribbean Sea. - Faial island  accidental with ships  Unknown 003512
55 Clavelina lepadiformis  1971 1950-1974 Not specified - Sào Miguel  accidental with ships  yes 003512
56 Clavelina oblonga   unknown North America - Azores Is.  unknown  Unknown 002673
57 Clavelina oblonga  1971 1950-1974 Bermuda - Azores Island  accidental with ships  Unknown 003512
58 Clymenella torquata  1936 19th century North America including Mexico - Whitstable, Kent  accidental  yes 001314
59 Clymenella torquata  2006 1975-present Northwest Atlantic - Marine waters of Ireland  aquaculture  yes 074339
60 Corbicula fluminea  1988 1975-present Not specified - Netherlands  accidental  yes 074657
61 Cordylophora caspia  1858 18th century Ponto-Caspian waters. - North Sea.  diffused from other countries  Unknown 003700
62 Corella eumyota  2005 1975-present Circum sub-Antarctic - Marine waters of Ireland  accidental with ships  yes 074339
63 Coscinodiscus wailesii  1977 1975-present Pacific - United Kingdom  unknown  yes 074657
64 Crassostrea rhizophorae  1980 1975-present Brazil - Wales  other reasons  Unknown 007794
65 Crassostrea rhizophorae  1980 1975-present Brazil - United Kingdom  research  no 074657
66 Crassostrea virginica   19th century USA, Canada - United Kingdom  fisheries  probably no 074657
67 Crassostrea virginica  1875 18th century Northwest Atlantic - Brackish and marine waters of Ireland  aquaculture  no 074339
68 Crassostrea virginica  1887 18th century Unclear. - Baltic Sea  aquaculture  Unknown 003700
69 Crepidula fornicata   1925-1949 United Kingdom - Germany  accidental  yes 074657
70 Crepidula fornicata   19th century Northwest Atlantic - United Kingdom  accidental  yes 074657
71 Crepidula fornicata  1872 19th century North America - United Kingdom  unknown  yes 074657
72 Crepidula fornicata  1890 18th century North America including Mexico. - Essex.  accidental  yes 001314
73 Crepidula fornicata  1902 1900-1924 Northwest Atlantic - Brackish and marine water areas of Ireland  aquaculture  no 074339
74 Crepidula fornicata  1902 1900-1924 United Kingdom - Ireland  accidental  yes 074657
75 Crepidula fornicata  1911 1900-1924 United Kingdom - Belgium  accidental  yes 074657
76 Crepidula fornicata  1926 1925-1949 United Kingdom - Netherlands  accidental  yes 074657
77 Crepidula fornicata  1932 1925-1949 United Kingdom - Denmark  accidental  yes 074657
78 Crepidula fornicata  1934 1925-1949 Western Atlantic. - North Sea.  aquaculture  Unknown 003700
79 Crepidula fornicata  1950 1950-1974 United Kingdom - Sweden  accidental  yes 074657
80 Crepidula fornicata  1958 1950-1974 United States of America - Norway  unknown  yes 074657
81 Crepidula fornicata  1963 1950-1974 United Kingdom - Norway  accidental  yes 074657
82 Cystodytes dellechiajei  1969 unknown Not specified - Azores Island  unknown  Unknown 003512
83 Diadumene cincta  1928 1925-1949 Pacific. - North Sea.  aquaculture  Unknown 003700
84 Diadumene lineata  1974 1950-1974 Northwest Pacific - Marine and brackish waters of Ireland  aquaculture  probably yes 074339
85 Didemnum lahillei  1991 1975-present Europe - Netherlands  unknown  yes 074657
86 Distaplia corolla  1971 1950-1974 Caribbean - Horta's harbour.  biofouling  Unknown 003512
87 Dreissena polymorpha   19th century Ponto-Caspian and the Aral Sea - United Kingdom  unknown  yes 074657
88 Dreissena polymorpha   1925-1949 Ponto-Caspian and the Aral Sea - Poland  unknown  yes 074657
89 Dreissena polymorpha  1827 19th century Ponto-Caspian and the Aral Sea - Netherlands  unknown  yes 074657
90 Dreissena polymorpha  1830 19th century Ponto-Caspian and the Aral Sea - Germany  unknown  yes 074657
91 Dreissena polymorpha  1840 19th century Ponto-Caspian and the Aral Sea - Denmark  unknown  yes 074657
92 Dreissena polymorpha  1996 1975-present Ponto-Caspian and the Aral Sea - Ireland  unknown  yes 074657
93 Ectopleura crocea  1989 1975-present Atlantic - Faial island  accidental with ships  Unknown 003512
94 Elminius modestus   19th century Australia - Chichester Harbour.  biofouling  yes 001314
95 Elminius modestus   19th century New Zealand - Chichester Harbour.  biofouling  yes 001314
96 Elminius modestus   unknown Not specified - Ireland  accidental  yes 074657
97 Elminius modestus  1940 1925-1949 Australia, New Zealand - United Kingdom  unknown  yes 074657
98 Elminius modestus  1953 1950-1974 Southern Pacific. - North Sea.  accidental with ships  Unknown 003700
99 Elminius modestus  1957 1950-1974 Southern Pacific - Brackish and marine waters of Ireland  biofouling  yes 074339
100 Emys orbicularis  1851 19th century Italy - Netherlands  accidental  yes 074657
101 Engina turbinella  1998 1975-present Western Atlantic - Not specified  ballast water  Unknown 003512
102 Ensis directus  1978 1975-present Western Atlantic Ocean - North Sea  accidental with ships  yes 080347
103 Ensis directus  1979 1975-present North America - Limfjorden and Danish Wadden Sea  ballast water   114890
104 Ensis directus  1979 1975-present North America - Dutch North Sea coastal zone  ballast water   114898
105 Ensis directus  1982 1975-present German Bight - Sweden  diffused from other countries   125895
106 Ensis directus  1986 1975-present German Bight - Belgian coast  diffused from other countries   125895
107 Ensis directus  1989 1975-present German Bight - Norway  diffused from other countries   125895
108 Ensis directus  1989 1975-present Atlantic coasts of North America. - Home Beach, Norfolk.  ballast water  yes 001314
109 Ensis directus  1991 1975-present Not specified - Bay of Seine, English Channel  ballast water  yes 080349
110 Ensis directus  2011 1975-present Elbe Estuary - Northern Spain  ballast water   114899
111 Ensis leei  1979 1975-present Atlantic, Northwest - Germany  diffused from other countries  yes 074657
112 Ensis leei  1981 1975-present Atlantic, Northwest - Denmark  diffused from other countries  yes 074657
113 Ensis leei  1982 1975-present Atlantic, Northwest - Sweden  diffused from other countries  yes 074657
114 Ensis leei  1982 1975-present Atlantic, Northwest - Netherlands  diffused from other countries  yes 074657
115 Ensis leei  1989 1975-present Atlantic, Northwest - United Kingdom  diffused from other countries  yes 074657
116 Ensis leei  1989 1975-present United States of America - Norway  diffused from other countries  yes 074657
117 Eriocheir sinensis   unknown China - Sweden  unknown  yes 074657
118 Eriocheir sinensis   unknown China - Estonia  unknown  yes 074657
119 Eriocheir sinensis   unknown China - Finland  unknown  yes 074657
120 Eriocheir sinensis   1900-1924 China - Portugal  unknown  yes 074657
121 Eriocheir sinensis   unknown China - Latvia  unknown  yes 074657
122 Eriocheir sinensis   unknown China - Lithuania  unknown  yes 074657
123 Eriocheir sinensis  1912 1900-1924 Northwest Pacific. - Inland waters.  accidental with ships  Unknown 003700
124 Eriocheir sinensis  1927 1925-1949 China - Germany  unknown  no 074657
125 Eriocheir sinensis  1927 1925-1949 Germany - Netherlands  diffused from other countries  yes 074657
126 Eriocheir sinensis  1927 1925-1949 Germany - Poland  diffused from other countries  yes 074657
127 Eriocheir sinensis  1932 1925-1949 Netherlands - Belgium  unknown  yes 074657
128 Eriocheir sinensis  1934 1925-1949 Germany - Denmark  diffused from other countries  yes 074657
129 Eriocheir sinensis  1935 19th century Unspecified, Korea - Thames Estuary  accidental with ships  yes 001314
130 Eriocheir sinensis  1935 19th century Unspecified, China - Thames Estuary  accidental with ships  yes 001314
131 Eriocheir sinensis  1935 19th century Unspecified, Japan - Thames Estuary  accidental with ships  yes 001314
132 Eriocheir sinensis  1935 1925-1949 China / Korea - United Kingdom  unknown  yes 074657
133 Eriocheir sinensis  1976 1975-present China - Norway  unknown  yes 074657
134 Eriocheir sinensis  2006 1975-present East Asia - Brackish and marine waters of Ireland  accidental with ships  probably yes 074339
135 Eusarsiella zostericola   18th century East coast of USA - Estuaries in England  accidental  probably yes 001314
136 Eusarsiella zostericola   19th century USA Atlantic coast - United Kingdom  unknown  yes 074657
137 Faxonius limosus   unknown unknown - Poland  unknown  yes 074657
138 Faxonius limosus   1950-1974 Not specified - Belgium  unknown  probably no 074657
139 Faxonius limosus  1890 19th century United States of America - Germany  fisheries  yes 074657
140 Faxonius limosus  1968 1950-1974 Belgium - Netherlands  unknown  probably yes 074657
141 Ficopomatus enigmaticus  1922 1900-1924 Unknown - London Docks  accidental with ships  yes 001314
142 Ficopomatus enigmaticus  1971 1950-1974 Indo-Pacific - Brackish and marine waters of Ireland  accidental with ships  yes 074339
143 Ficopomatus enigmaticus  1975 1975-present Southern Pacific. - North Sea.  accidental with ships  Unknown 003700
144 Gammarus duebeni  2005 1975-present unknown - Kõiguste Bay  unknown   125635
145 Gammarus lacustris  2005 1975-present unknown - Undu Bay  unknown   125635
146 Gammarus tigrinus  2003 1975-present Curonian Lagoon - Kõiguste Bay  unknown  yes 125635
147 Gonionemus vertens  1913 Pre 18th century Asia outside Western Palaearctic. - Central North Sea, 53°30' to 57°30' N.  accidental  yes 001314
148 Gonionemus vertens  1913 1900-1924 China, Korea, Japan - United Kingdom  unknown  yes 074657
149 Gonionemus vertens  1947 1925-1949 North America. - North Sea.  accidental with ships  Unknown 003700
150 Grateloupia doryphora  1969 1950-1974 Pacific / Atlantic - United Kingdom  unknown  yes 074657
151 Grateloupia filicina   1925-1949 Pacific - United Kingdom  unknown  yes 074657
152 Haliotis discus   unknown unknown - Ireland  fisheries  unknown 074657
153 Haliotis discus  1992 1975-present Japan - Iceland  aquaculture  no 074657
154 Haliotis rufescens  1982 1975-present USA - UK  research  Unknown 007794
155 Haliotis rufescens  1988 1975-present United States of America - Iceland  aquaculture  no 074657
156 Haliotis tuberculata   unknown unknown - Ireland  fisheries  unknown 074657
157 Haliplanella lineata   19th century Pacific - United Kingdom  unknown  yes 074657
158 Haliplanella lineata  1860 18th century Asia outside Western Palaearctic. - Not Specified.  accidental with ships  yes 001314
159 Haliplanella lineata  1920 1900-1924 Pacific. - North Sea.  accidental with ships  Unknown 003700
160 Hemigrapsus penicillatus  2000 1975-present Japan - Netherlands  diffused from other countries  yes 074657
161 Hemigrapsus sanguineus   unknown Pacific, Northwest - Netherlands  unknown  probably yes 074657
162 Hiatella arctica  1969 1950-1974 Not specified - Not specified  unknown  Unknown 003512
163 Homarus americanus  1961 1950-1974 Northwest Atlantic - Marine waters of Ireland  other reasons  no 074339
164 Homarus americanus  1999 1975-present United States of America - Norway  accidental  probably no 074657
165 Hydroides elegans   1975-present Indo-Pacific - Not specified  accidental with ships  yes 003512
166 Isognomon radiatus  1996 1975-present Western Atlantic - Marine waters of Ireland.  other reasons  no 074339
167 Janua brasiliensis  1974 1950-1974 South and Central America, Africa south of Sahara and Asia outside Western Palaearctic. - Portsmouth Harbour, Eastern English Channel.  accidental with ships  yes 001314
168 Janua marioni  1979 1975-present Eastern Pacific - São Miguel and Faial island  accidental with ships  Unknown 003512
169 Kirchenpaueria halecioides  1989 1975-present Unknown - Faial isaland  accidental with ships  probably no 003512
170 Lepas anatifera   unknown Not specified - Netherlands  unknown  probably yes 074657
171 Lepas anatifera   19th century Not specified - Norway  diffused from other countries  yes 074657
172 Ligia italica  1887 18th century Mediterranean - Azores  ballast water  Unknown 003512
173 Ligia oceanica   1975-present Western Atlantic - Azores Island  accidental with ships  Unknown 003512
174 Limulus polyphemus  1866 18th century Northwest Atlantic - North Sea  ornamental  Unknown 003700
175 Magallana gigas   unknown France, United Kingdom - Ireland  aquaculture  unknown 074657
176 Magallana gigas   1975-present unknown - Belgium  accidental  yes 074657
177 Magallana gigas   1975-present United States of America - Netherlands  aquaculture  unknown 074657
178 Magallana gigas   1975-present United States of America - Denmark  aquaculture  unknown 074657
179 Magallana gigas   1975-present United States of America - Norway  aquaculture  unknown 074657
180 Magallana gigas   1975-present unknown - Germany  unknown  probably yes 074657
181 Magallana gigas   1975-present United States of America - United Kingdom  aquaculture  unknown 074657
182 Magallana gigas  1926 1925-1949 Portugal - United Kingdom  unknown  yes 074657
183 Magallana gigas  1926 1925-1949 unknown - United Kingdom  fisheries  probably yes 074657
184 Magallana gigas  1965 1950-1974 Canada - Wales.  other reasons  Unknown 007794
185 Magallana gigas  1969 1950-1974 Northern Pacific - Brackish and marine waters of Ireland  aquaculture  yes 074339
186 Magallana gigas  1977 1975-present France - Portugal  aquaculture  probably yes 074657
187 Magallana gigas  1989 1950-1974 Asia outside Western Palaearctic. - Rivers Exe, Teign and Dart, Western English Channel.  aquaculture  Unknown 001314
188 Magallana gigas  1991 1975-present Northwest Pacific. - North Sea.  aquaculture  Unknown 003700
189 Magallana gigas  1993 1975-present France - Ireland  aquaculture  unknown 074657
190 Marenzelleria viridis  1983 1975-present Northwest Atlantic. - North Sea.  ballast water  Unknown 003700
191 Marenzelleria viridis  1984 1975-present North America including Mexico. - Humber, Central North sea.  accidental with ships  yes 001314
192 Megabalanus tintinnabulum   18th century Sub-tropical region (not specified) - Marine waters of Ireland  biofouling  no 074339
193 Mercenaria mercenaria   19th century United States of America - United Kingdom  fisheries  yes 074657
194 Mercenaria mercenaria  1864 19th century American Atlantic - United Kingdom  unknown  yes 074657
195 Mercenaria mercenaria  1870 19th century United States of America - Netherlands  diffused from other countries  yes 074657
196 Mercenaria mercenaria  1965 1950-1974 USA - Netherlands  other reasons  Unknown 007794
197 Mercenaria mercenaria  1969 1950-1974 Northwest Atlantic - Marine waters of Ireland  aquaculture  unknown 074339
198 Microphthalmus similis  1962 1950-1974 Unclear. - North Sea.  unknown  Unknown 003700
199 Mizuhopecten yessoensis  1985 1975-present Japan - Denmark.  aquaculture  unknown 007794
200 Mizuhopecten yessoensis  1987 1975-present Japan - France  aquaculture  unknown 007794
201 Mizuhopecten yessoensis  1988 1975-present Northwest Pacific - Marine waters of Ireland  aquaculture  no 074339
202 Mizuhopecten yessoensis  1990 1975-present unknown - Ireland  aquaculture  unknown 074657
203 Mnemiopsis leidyi   1975-present unknown - Inner Danish waters  diffused from other countries  yes 120370
204 Mnemiopsis leidyi  2006 1975-present Estuaries and coastal regions along the eastern coast of North and South America. - Kiel Bight, western Baltic Sea.  accidental with ships  Unknown 002959
205 Mnemiopsis leidyi  2006 1975-present Estuaries and coastal regions along the eastern coast of North and South America. - Coastal waters of Netherlands.  accidental with ships  Unknown 002962
206 Molgula manhattensis  1998 1975-present Northwest Atlantic - Marine waters of Ireland  unknown  probably yes 074339
207 Monocorophium sextonae   1925-1949 New Zealand - United Kingdom  unknown  yes 074657
208 Monocorophium sextonae   19th century New Zealand. - Plymouth  unknown  probably yes 001314
209 Monocorophium sextonae   unknown Not specified - Ireland  accidental  yes 074657
210 Monocorophium sextonae  1985 1975-present New Zealand - Norway  diffused from other countries  yes 074657
211 Monocorophium sextonae  1997 1975-present Southern Pacific. - North Sea.  accidental with ships  Unknown 003700
212 Mya arenaria   Pre 18th century United States of America - United Kingdom  unknown  yes 074657
213 Mya arenaria  1000 Pre 18th century United States of America - Norway  accidental  yes 074657
214 Mya arenaria  1200 Pre 18th century Northwest Atlantic. - Baltic Sea.  accidental with ships  Unknown 003700
215 Mya arenaria  1200 Pre 18th century Canada - Netherlands  unknown  yes 074657
216 Mya arenaria  1500 Pre 18th century USA - Scandinavia.  aquaculture  Unknown 007794
217 Mya arenaria  1600 Pre 18th century North America including Mexico. - England.  bait  yes 001314
218 Mytilicola intestinalis  1995 19th century Europe in the Mediterranean Sea. - Not known.  diffused from other countries  yes 001314
219 Mytilicola orientalis  1993 1975-present Northwest Pacific - Brackish and marine waters of Ireland  accidental  yes 074339
220 Mytilicola orientalis  1995 19th century Asia outside Western Palaearctic. - Not known.  accidental  yes 001314
221 Mytilopsis leucophaeata   unknown United States of America - Germany  unknown  yes 074657
222 Mytilopsis leucophaeata  1835 19th century United States of America - Belgium  unknown  yes 074657
223 Mytilopsis leucophaeata  1895 19th century United States of America - Netherlands  unknown  yes 074657
224 Mytilopsis leucophaeata  1996 1975-present United States of America - United Kingdom  unknown  yes 074657
225 Mytilopsis leucophaeata  1996 18th century North America including Mexico. - Cardiff Docks, Bristol Channel.  unknown  yes 000000
226 Mytilus galloprovincialis  2002 1975-present France - Netherlands  diffused from other countries  probably yes 074657
227 Nemopsis bachei  1942 1925-1949 Western Atlantic. - North Sea.  accidental with ships  Unknown 003700
228 Orconectes virilis  1960 1950-1974 unknown - Sweden  unknown  no 074657
229 Ostrea chilensis  1962 1950-1974 Chile - Wales  other reasons  Unknown 007794
230 Ostrea chilensis  1982 1975-present Chile - France  other reasons  Unknown 007794
231 Ostrea equestris  1995 1975-present Western Atlantic - Marine waters of Ireland.  other reasons  no 074339
232 Ostrea lutaria  1963 1950-1974 New Zealand - Wales  fill ecological niche  Unknown 007794
233 Ostrea lutaria  1963 1950-1974 New Zealand - United Kingdom  unknown  yes 074657
234 Ostrea lutaria  1963 1950-1974 unknown - United Kingdom  aquaculture  yes 074657
235 Pachycordyle michaeli  1935 1925-1949 unknown - Isefjorden  ballast water   125835
236 Pachycordyle michaeli  1964 1950-1974 unknown - Gat van Ouwerkerk  diffused from other countries   125835
237 Pachycordyle michaeli  1973 1950-1974 Unknown - Widewater Lagoon, West Sussex, Eastern English Channel (from 2°W to the Dover Strait, 51°N).  accidental with ships  yes 001314
238 Pachycordyle michaeli  2015 1975-present unknown - Port of Kiel  accidental with ships   125835
239 Pacifastacus leniusculus   unknown United States of America and Sweden - Germany  unknown  yes 074657
240 Pacifastacus leniusculus   unknown unknown - Lithuania  fisheries  probably yes 074657
241 Pacifastacus leniusculus   1950-1974 Not specified - Belgium  unknown   074657
242 Pacifastacus leniusculus   unknown Sweden - Denmark  unknown  yes 074657
243 Pacifastacus leniusculus   1950-1974 USA and Sweden - Finland  aquaculture  yes 074657
244 Pacifastacus leniusculus  1960 1950-1974 United States of America - Sweden  fisheries  yes 074657
245 Pacifastacus leniusculus  1972 1950-1974 Sweden - Poland  fisheries  probably yes 074657
246 Pacifastacus leniusculus  1976 1975-present Sweden and USA - United Kingdom  accidental  yes 074657
247 Palaemon macrodactylus  2000 1975-present Unspecified, China. - Orwell Estuary, southern North Sea.  accidental  probably yes 001314
248 Palaemon macrodactylus  2000 1975-present Unspecified, Japan. - Orwell Estuary, southern North Sea  accidental  probably yes 001314
249 Palaemon macrodactylus  2000 1975-present Unspecified, Korea. - Orwell Estuary, southern North Sea.  accidental  probably yes 001314
250 Palaemon macrodactylus  2004 1975-present Southeast Asia. - North Sea.  accidental with ships  Unknown 003700
251 Palaemon macrodactylus  2006 1975-present unknown - Gironde and Adour Estuary  ballast water  probably yes 125877
252 Paralithodes camtschaticus   1950-1974 Pacific - Norway  fisheries  yes 074657
253 Paralithodes camtschaticus   1950-1974 Sea of Japan - Barents Sea  fisheries  yes 125523
254 Paralithodes camtschaticus  1960 1950-1974 Murmansk, Russia, Barents Sea - Finnmark, northern Norway  unknown  yes 121578
255 Paralithodes camtschaticus  1990 1975-present USSR, Former Area of - Norway  unknown  yes 074657
256 Penaeus japonicus   18th century Indo-Pacific - Marine waters of Ireland  biofouling  probably no 074339
257 Penaeus japonicus   1975-present unknown - Portugal  aquaculture  unknown 074657
258 Penaeus japonicus   1975-present France - Celtic Sea and English Channel  accidental   110651
259 Penaeus japonicus  1985 1975-present Spain - Portugal  aquaculture  no 074657
260 Penaeus vannamei  2006 1975-present unknown - Netherlands  aquaculture  no 074657
261 Penilia avirostris  1947 1925-1949 Tropical to warm temperate regions - North Sea off Netherlands  ballast water  Unknown 003224
262 Perophora japonica  1999 1975-present Unknown - Plymouth  unknown  probably yes 001314
263 Petricola pholadiformis   19th century Atlantic, Northeast - United Kingdom  unknown  yes 074657
264 Petricola pholadiformis   unknown Atlantic, Northeast - Belgium  unknown  yes 074657
265 Petricola pholadiformis   unknown Atlantic, Northeast - Netherlands  unknown  yes 074657
266 Petricola pholadiformis  1890 18th century North America. - River Crouch, Essex.  accidental  yes 001314
267 Petricola pholadiformis  1896 1925-1949 Northwest Atlantic. - North Sea.  aquaculture  Unknown 003700
268 Petricola pholadiformis  1910 1900-1924 United States of America - Netherlands  diffused from other countries  yes 074657
269 Petricola pholadiformis  1955 1950-1974 United States of America - Norway  accidental  yes 074657
270 Petricolaria pholadiformis   1925-1949 New York - Essex County  accidental   125669
271 Phoronis hippocrepia  1991 1975-present Unknown - Azores island  accidental with ships  yes 003512
272 Pikea californica  1967 1950-1974 United States of America - United Kingdom  unknown  yes 074657
273 Pileolaria berkeleyana  1974 1950-1974 Japan - Portsmouth Harbour  accidental with ships  yes 001314
274 Pileolaria berkeleyana  1974 1950-1974 Kamchatka Peninsula - Portsmouth Harbour  accidental with ships  yes 000000
275 Pilumnus spinifer   1975-present Not Specified - Azores island  accidental with ships  Unknown 003512
276 Pinctada radiata  1998 1975-present Indo-Pacific - Faial island  Lessepsian migration  Unknown 003512
277 Plagusia squamosa   1900-1924 Atlantic - Azores island  accidental with ships  Unknown 003512
278 Platorchestia platensis   unknown unknown - Thames  unknown   125705
279 Platorchestia platensis   1975-present unknown - Sweden  diffused from other countries   125705
280 Platorchestia platensis   unknown unknown - Netherlands  unknown   125705
281 Platorchestia platensis  1860 19th century unknown - Denmark  unknown   125705
282 Platorchestia platensis  1980 1975-present unknown - Norway  diffused from other countries   125705
283 Platorchestia platensis  1990 1975-present unknown - Germany  diffused from other countries   125705
284 Platorchestia platensis  2005 1975-present unknown - Hel Peninsula  unknown   125705
285 Pleurosigma simonsenii  1966 1950-1974 Red Sea - United Kingdom  unknown  yes 074657
286 Polyclinum aurantium  1971 1950-1974 Europe - Harbor of Ponta Delgada  accidental  Unknown 003512
287 Pontastacus leptodactylus   1950-1974 unknown - Belgium  unknown  yes 074657
288 Pontastacus leptodactylus   1950-1974 unknown - United Kingdom  other reasons  yes 074657
289 Pontastacus leptodactylus   unknown Eastern Europe - Germany  fisheries  yes 074657
290 Pontastacus leptodactylus  1977 1975-present Germany - Netherlands  accidental  yes 074657
291 Potamopyrgus antipodarum   1900-1924 unknown - Denmark  accidental  yes 074657
292 Potamopyrgus antipodarum  1859 19th century New Zealand - United Kingdom  unknown  yes 074657
293 Potamopyrgus antipodarum  1859 19th century unknown - United Kingdom  accidental  yes 074657
294 Potamopyrgus antipodarum  1952 1950-1974 New Zealand - Norway  unknown  yes 074657
295 Procambarus clarkii   1975-present unknown - Portugal (Sao Miguel, Azores)  unknown  unknown 074657
296 Procambarus clarkii   unknown unknown - Germany  ornamental  probably yes 074657
297 Procambarus clarkii   unknown Not specified - Norway  unknown   074657
298 Procambarus clarkii   unknown Not specified - Sweden  unknown   074657
299 Procambarus clarkii   unknown Not specified - United Kingdom  unknown   074657
300 Procambarus clarkii  1979 1975-present Spain - Portugal  accidental  yes 074657
301 Procambarus clarkii  1985 1975-present United States of America - Netherlands  accidental  probably yes 074657
302 Pyura tessellata  1969 1950-1974 Not specified - Terciera island  accidental with ships  Unknown 003512
303 Rapana venosa  1997 1975-present Adriatic Sea - Coast of Brittany  accidental   088058
304 Rapana venosa  2005 1975-present unspecified - Netherlands, Dutch North Sea  accidental with ships  unknown 087542
305 Rapana venosa  2007 1975-present Not specified - Ría de Arousa  unknown   105998
306 Rhinella marina   unknown South America - Virgin Islands, British  unknown  yes 074657
307 Rhithropanopeus harrisii  1874 18th century Western North Atlantic - Netherlands  ballast water  Unknown 003224
308 Rhithropanopeus harrisii  1936 1925-1949 Northwest Atlantic. - Baltic Sea.  accidental with ships  Unknown 003700
309 Rhithropanopeus harrisii  1996 1975-present Atlantic, Northwest - United Kingdom  unknown  yes 074657
310 Rhithropanopeus harrisii  1996 19th century North America - Cardiff Docks.  accidental with ships  probably yes 001314
311 Rhithropanopeus harrisii  1996 19th century West Atlantic - Cardiff Docks.  accidental with ships  probably yes 001314
312 Ruditapes decussatus   1900-1924 Not Specified - São Jorge island    Unknown 003512
313 Ruditapes philippinarum   unknown United Kingdom - Ireland  aquaculture  probably yes 074657
314 Ruditapes philippinarum   unknown unknown - United Kingdom  aquaculture  yes 074657
315 Ruditapes philippinarum  1973 1975-present Pacific - Marine waters of Ireland  aquaculture  no 074339
316 Ruditapes philippinarum  1987 1975-present Philippines - Norway  accidental  yes 074657
317 Ruditapes philippinarum  1988 19th century Asia outside Western Palaearctic: Japan. - Poole Harbour.  aquaculture  yes 001314
318 Sabella spallanzanii  1954 1950-1974 Mediterranean - Faial island  biofouling  Unknown 003512
319 Sargassum muticum  1987 1975-present Japan and Southeast Asia - Sweden  accidental   069779
320 Solieria chordalis  1976 1975-present France - United Kingdom  unknown  yes 074657
321 Sphaeroma serratum  1991 1975-present Mediterranean - Azores Island  accidental with ships  Unknown 003512
322 Styela clava   1950-1974 Korea to Russia - Plymouth  accidental with ships  Unknown 001314
323 Styela clava  1971 1950-1974 Northwest Pacific - Brackish and marine water areas of Ireland  accidental with ships  yes 074339
324 Styela clavata  1997 1975-present Northern Atlantic. - North Sea.  accidental with ships  Unknown 003700
325 Tanais dulongii   1975-present Not specified - Azores Island  accidental  Unknown 003512
326 Terebella lapidaria  1993 1975-present Continental Europe - Marine waters of Ireland  aquaculture  probably no 074339
327 Teredo navalis   18th century unknown - Zealand and Westfrisland  unknown   098650
328 Teredo navalis  1600 Pre 18th century unknown - Belgium  accidental with ships   098651
329 Teredo navalis  1808 18th century Indo-Pacific. - North Sea.  accidental with ships  Unknown 003700
330 Tesseropora atlantica  1965 1950-1974 Bermuda - Azores Island  accidental with ships  Unknown 003512
331 Trachemys scripta   unknown United States of America - Poland  unknown  probably no 074657
332 Trachemys scripta   unknown United States of America - United Kingdom  unknown  yes 074657
333 Trachemys scripta  1951 1950-1974 Not specified - Netherlands  unknown  yes 074657
334 Truncatella subcylindrica  1980 1975-present Not specified - Terceira and Graciosa islands  unknown  Unknown 003512
335 Urosalpinx cinerea   1900-1924 United States of America - United Kingdom  unknown  yes 074657
336 Urosalpinx cinerea  1927 19th century North America including Mexico. - Essex.  accidental  yes 001314
337 Victorella pavida  1911 1900-1924 Indo-Pacific. - Baltic Sea.  accidental with ships  Unknown 003700
338 Xenostrobus securis  2005 1975-present New Zealand and/or Australia - Ria De Vigo, Galicia  accidental   084402
Back to Search
Back to Top