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Species details
Internal ID3
Common nameGreen sea fingers
Scientific NameCodium fragile
Scientific NameCodium fragile
Scientific Name acceptedCodium fragile
Aphia ID145086
Aphia ID accepted145086
High GroupAlgae
Tax info classUlvophyceae
Tax info phylumChlorophyta
Tax info phylum sourcewww.marinespecies.org
Tax info familyCodiaceae
Tax info orderBryopsidales
Geographical range areaIceland 1974; Iceland < 1972; Norway (2014); Alaska (1984); Alaska (Prince William Sound) 1997
Geographical range area sourcenorton 2014; DAISIE (map); Caram & Jonsson 1972; http://www.gbif.org/occurrence/search?HAS_GEOSPATIAL_ISSUE=false&GEOMETRY=-0.87%2067.64%2C-0.87%2073.44%2C26.68%2073.44%2C26.68%2067.64%2C-0.87%2067.64&TAXON_KEY=5272096; Ruiz et al 2006http://www.gbif.org/occurrence/search?HAS_GEOSPATIAL_ISSUE=false&GEOMETRY=-165.86%2054.81%2C-165.86%2063.71%2C-138.31%2063.71%2C-138.31%2054.81%2C-165.86%2054.81&TAXON_KEY=5272096;
Year first recorded1974
Region First recordedSouthwest Iceland
Is Marine?Yes
Temperature rangeThough a warm temperate species with temperature optimum at 24?C, growth and reproduction are still possible at 12?C, adults can survive winter temperature of -2?C.
Temperature range sourceDAISIE
Match typeexact
Invasion details
Location first observationSW Iceland
Location first observation sourcenorton 2014
Year first observation1974
Year first observation sourcenorton 2014
Vector introductionThe vector to Europe is unknown; secondary dispersal was by movement of shellfish for mariculture, transport on ship hulls and net fouling.
Vector introduction sourceDAISIE
Impact indicatorsEconomical (It fouls shellfish beds, smothering mussels and scallops, clogging scallop dredges, and interfering with harvesting. It fouls fishing nets, wharf pilings and jetties. ?It causes a nuisance to humans when it is swept ashore and rots); Ecological (It alters benthic communities and habitats, its dense fronds hinder movement of large invertebrates and fish along the bottom, and increases sedimentation.)
Impact indicators sourceDAISIE
Reference 1J?nsson and Gunnarsson 1975