Nederlands Soortenregister

Overzicht van de Nederlandse biodiversiteit

Scheepsworm Psiloteredo megotara

Indeling

Teredinidae [familie]
Psiloteredo [genus] (1/1)
megotara [soort]

Exotenpaspoort ?

Vestigingsstatus Gevestigd
Zeldzaamheid Algemeen
Invasiviteit Niet invasief
Invasiviteit (toelichting) The origin of P. megotara is unclear and it may or may not be native to the Atlantic Ocean and/or the North Sea. The species nowadays ranges from the arctic region and the northern part of the Atlantic, including parts of the Baltic and the entire North Sea, to the Mediterranean and the Black Sea and is also known from Canada and North America. It is not known with certainty if it is an invasive species and has actually invaded parts of its current range in the past or present (through transports in the hulls of wooden ships or recently with ballastwater) or part of the native distribution.
Type introductie Niet opzettelijk
Jaar van eerste introductie 1912
Jaar van eerste melding 1912
Natuurlijke verspreiding Onbekend
Verspreiding in Nederland
  • Friesland
  • Groningen
  • Zuid-Holland
  • Zeeland
  • Verspreiding in Nederland (toelichting) This species used to be very common in wooden ships several centuries ago. For this reason Redeke (1913) proposed the Dutch vernacular name 'Scheepsworm' (shipworm) for P. megotara, opposite to 'Paalworm' (pileworm) for Teredo navalis. In his paper on the latter species, Redeke (1912) mentions he found P. megotara in the hulls of wooden fishing vessels docked in harbours of Middelharnis, Vlaardingen, Maassluis, Scheveningn, Katwijk, Noordwijk, IJmuiden and Den Helder. Untill 1985 P. megotara was regularly found on the Dutch coast, usually in driftwood washed up the shore. The last decades there are only sporadic records from the Dutch coast. Whether this is due to a true decline, or the species simply is less looked for, is subject to speculation (De Bruyne et al. 2013).
    Habitats
  • Mariene habitats
  • Estuaria en brakwatergebieden
  • Wijze van introductie Aangroei op scheepsrompen
    Ecologische impact (toelichting) As is the case with the naval shipworm Teredo navalis, this species drills tunnels into wood submerged in water. The animal favoures a slightly more marine habitat than the common shipworm Teredo navalis, but may also be present in brackish waters. Both species can do great damage to wooden structures (a.o. shipwrecks and beach piles built to protect sandy coasts from erosion). Especially pinewood is eaten very rapidly. Eradication of the species is impossible. The only way to avoid economical damage caused by Teredo species, is to use non-wooden materials (stone, concrete, steel) in submerged parts. Piles in American harbours are often covered with a special plastic foil, to prevent larvae from entering the wood. There are no recent data from the Netherlands of ecological or economic impact of this particular species, damage is often just referred to as 'made by pileworms'.
    Economische impact (toelichting) There are no recent data from the Netherlands of ecological or economic impact of this particular species, damage is often just referred to as 'made by pileworms'.

    Publicaties

    • Benthem Jutting, W.S.S. van 1943. Mollusca (I) C. Lamellibranchiata. In: L.F. de Beaufort, P.N. van Kampen, E.D. van Oort, H.C. Redeke & W. Roepke (red.), Fauna van Nederland 12: 1-477. 1-477. A.W. Sijthoff, Leiden.
    • Bruyne, R.H. de & T. Neckheim 2001. Van Nonnetje tot Tonnetje. De recente en fossiele weekdieren (slakken en schelpen) van Amsterdam. Schuyt & Co., Haarlem.
    • Redeke, H.C. 1912. Rapport over onderzoekingen betreffende het voorkomen van den Scheepsworm (Teredo megotara Hanl.) in Nederlandsche zeevisschersvaartuigen. 1-47. Landsdrukkerij ’s Gravenhage.
    • Redeke, H.C. 1913. Bijzonderheden over een voor de Nederlandse fauna nieuwe soort van Teredo. Tijdschrift der Nederlandsche Dierkundige Vereeniging 2: verslagverg.PLXX..
    • VLIZ Alien Species Consortium 2011. Paalwormen - Teredo navalis en Psiloteredo megotara. Niet-inheemse soorten van het Belgisch deel van de Noordzee en aanpalende estuaria (VLIZ Information Sheets 41). 1-7. Vlaams Instituut voor de Zee (VLIZ), Oostende, Belgium.