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Table 2 Overview of the macro-Crustacea encountered in the samples of the Belgian coastal harbours, with indication of the number of sites (out of a total of 43) where the species was recorded, their origin and the year of first detection of the alien species in Belgium. The vector of dispersal and the salinity range in their area of origin was given for all alien species. Alien species are presented in bold

From: Assessing the importance of alien macro-Crustacea (Malacostraca) within macroinvertebrate assemblages in Belgian coastal harbours

Order/family Species Origin First occurrence in Belgium Reference # sites in coastal harbours Vector Salinity range (‰) native area
AMPHIPODA
Aoridae Microdeutopus gryllotalpa Costa 1853     21   
Caprellidae Caprella linearis (Linnaeus 1767)     4   
Caprella mutica Schurin 1935 Northeast-Asia 1998 Cook et al. (2007) 7 Ships 11–30
Corophiidae Corophium acherusicum Costa 1851     13   
Corophium crassicorne Bruzelius 1859     2   
Corophium insidiosum Crawford 1937     2   
Corophium lacustre Vanhöffen 1911     2   
Corophium volutator (Pallas 1766)     1   
Monocorophium sextonae (Crawford 1937) New-Zeeland <2000 Massin et al. (2002) 1 Unknown 10–30
Gammaridae Dikerogammarus villosus (Sowinsky 1894) Ponto-Caspian 1997 Messiaen et al. (2010) 5 Ships 0–20
Gammarus crinicornis Stock 1966     6   
Gammarus duebeni Liljeborg 1852     4   
Gammarus locusta Fabricius 1775     15   
Gammarus tigrinus Sexton 1939 North-America 1991 Messiaen et al. (2010) 11 Ships, aquaculture 0–25
Hyperiidae Hyperia galba (Montagu 1815)     1   
Ischyroceridae Jassa marmorata Holmes 1905     4   
Melitidae Melita nitida Smith 1873 North-America 2003 Faasse and Van Moorsel (2003) 1 Ships 3–20
Melita palmata (Montagu 1804)     21   
Talitridae Orchestia cavimana Heller 1865 Ponto-Caspian 1927 Wouters (2002) 1 Unknown 0–7
Orchestia gamarellus (Pallas 1766)     1   
DECAPODA
Crangonidae Crangon crangon (Linnaeus 1758)     4   
Inachidae Macropodia parva Van Noort and Adema 1985     1   
Palaemonidae Palaemon elegans Rathke 1837     1   
Palaemon longirostris H Milne Edwards 1837     3   
Palaemon macrodactylus Rathbun 1902 East-Asia 1998 Boets et al. (2011b) 1 Ships 2–20
Palaemon serratus (Pennant 1777)     10   
Palaemonetes varians (Leach 1814)     3   
Panopeidae Rhithropanopeus harrisii (Gould 1841) North-America 1985 Wouters (2002) 3 Ships 0.5–30
Porcellanidae Pisidia longicornis (Linnaeus 1767)     3   
Portunidae Carcinus maenas (Linnaeus 1758)     20   
Varunidae Eriocheir sinensis H Milne Edwards 1853 East-Asia 1933 Wouters (2002) 2 Ships 0–30
Hemigrapsus takanoi Asakura & Watanabe 2005 North-America 2003 Dumoulin (2004) 21 Ships 5–40
Hemigrapsus sanguineus (De Haan 1835) North-America 2006 Nuyttens et al. (2006); d’Udekem d’Acoz (2006) 1 Ships 10-34
ISOPODA
Asellidae Asellus aquaticus (Linnaeus 1758)     6   
Idoteidae Idotea chelipes (Pallas 1766)     1   
Idotea linearis (Linnaeus 1766)     1   
Janiridae Jaera albifrons Leach 1814     1   
Sphaeromatidae Lekanesphaera hookeri (Leach 1814)     7   
MYSIDA
Mysidae Mesopodopsis slabberi (van Beneden 1861)     6   
Neomysis integer (Leach 1814)     3   
Praunus flexuosus (Müller 1776)     2   
Schistomysis kervillei (GO Sars 1885)     1   
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Helgoland Marine Research

ISSN: 1438-3888

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