Nederlands Soortenregister

Overzicht van de Nederlandse biodiversiteit

Gesterde geleikorst Botryllus schlosseri

Foto: Stefan Verheyen


Botryllidae [familie]
Botryllus [genus] (1/1)
schlosseri [soort]

Exotenpaspoort ?

Vestigingsstatus Gevestigd
Zeldzaamheid Algemeen
Invasiviteit Potentieel invasief
Invasiviteit (toelichting) There is much debate whether this is an invasive species in Europe. The exact origin of B. schlosseri seems to be currently unknown. It might be the North East Atlantic Ocean (Wolff 2005). In that case this is not an European invasive species, as it then ranges from Norway to the Mediterranean (Hayward & Ryland 1991). B. schlosseri is nowadays also present at several Asian coasts, a.o.: Russia, Hong Kong, southern China (Nishikawa 1991) and in the America’s. Globally it is widespread on temperate coasts on both sides of the North and South Atlantic and Pacific. As a common species among fouling communities, it probably is distributed on hulls of ships and/or aquaculture transfers. It is a fast growing, adaptable species, it is hermafroditic and capable of self-fertilization, and is tolerant to lower and higher temperatures and salinities (Fofonoff et al. 2003).
Type introductie Niet opzettelijk
Jaar van eerste introductie 1859
Jaar van eerste melding 1859
Natuurlijke verspreiding Noordelijke Atlantische Oceaan
Verspreiding in Nederland
  • Friesland
  • Groningen
  • Noord-Holland
  • Zuid-Holland
  • Zeeland
  • Verspreiding in Nederland (toelichting) The species probably is not an alien in the North-Sea area. It was mentioned in 1856 by Herklots as specificly 'Inlandsch' (indigenous) and is also mentioned in even earlier publications. At present the species lives mainly in the provice of Zeeland (Eastern and Western Scheldt, Lake Grevelingen, but is also recorded from the Wadden Sea and several Wadden Islands (Gittenberger et al. 2009). Recently species was found to be diminishing from the Eastern Scheldt and Lake Grevelingen (Leewis et al. 2005).
  • Mariene habitats
  • Estuaria en brakwatergebieden
  • Wijze van introductie
  • Aquacultuur
  • Aangroei op scheepsrompen
  • Onderling verbonden waterwegen/bassins/zeeën
  • Impact Concurrentie
    Ecologische impact (toelichting) This species grows on solid substrate and structures in marinas and elesewhere. It has the ability to overgrow other species and/or diminish populations through competition. In this respect this species will have a certain impact on the ecosystem, atlhough there are no specifics from the Netherlands.
    Economische impact (toelichting) B. schlosseri is a fouling organism in harbors and on ships. It has been called 'a fast-growing pernicious pest' on oyster trays (Fofonoff et al. 2003). In the Netherlands there are no specific indications of economic impact.