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   Dreissena polymorpha (mollusc)
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    Details of this species in Finland
    Status: Alien
    Invasiveness: Invasive
    Occurrence: Established
    Source: DAISIE 2006
    Arrival Date: 1995
    Introduction: Unintentional (accidentally)
    Species Notes for this Location:
    In 1990 the zebra mussel was reported from brackish water in the eastern part of the Gulf of Finland after being present for 150 years in the nearby freshwater Lake Ladoga (Gollasch & Leppäkoski 1999, Minchin et al. 2002, in Birnbaum 2006). The zebra mussel was first recorded in Finland in 1995 (DAISIE 2006). It is accidentally dispersed via floating structures, ballast water or sediments in tanks (DAISIE 2006). According to the North European and Baltic Network on Invasive Alien Species (NOBANIS) database (2009) the zebra mussel is locally common in estuaries and brackish areas and is described as invasive in Finland.
    Management Notes for this Location:
    Location Notes:
    Last Modified: 14/12/2009 2:56:00 p.m.
ISSG Landcare Research NBII IUCN University of Auckland The Global Invasive Species Database is managed by the Invasive Species Specialist Group (ISSG) of the IUCN Species Survival Commission. It was developed as part of the global initiative on invasive species led by the Global Invasive Species Programme (GISP) and is supported through partnerships with the National Biological Information Infrastructure, Manaaki Whenua-Landcare Research and the University of Auckland. Conditions of use.