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Waarnemingen van de mosdiertjes Cryptosula pallasiana (Moll, 1803), Bugula stolonifera Ryland, 1960 en Bugula neritina (Linnaeus, 1758) nieuw voor de Belgische fauna
Kerckhof, F. (2000). Waarnemingen van de mosdiertjes Cryptosula pallasiana (Moll, 1803), Bugula stolonifera Ryland, 1960 en Bugula neritina (Linnaeus, 1758) nieuw voor de Belgische fauna. De Strandvlo 20(3): 114-126
In: De Strandvlo: Driemaandelijks Tijdschrift van De Strandwerkgroep België. De Strandwerkgroep België: Oostende. ISSN 0773-3542, more

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  • Kerckhof, F., more

Abstract
    During surveys in the harbour of Oostende three bryozoan species new for the Belgian fauna were found. Cryptosula pallasjana (Moll, 1803) is a common fouling species on ships hulls and other floating objects in the Mercator yachting harbour in Oostende. EIsewhere along the Belgian coast this conspicuous species has not yet been encountered. Bugula stolonifera Ryland, 1960 is abundant in the harbour docks of Oostende where it occurs on ships hulls, floating objects and on all sorts of harbour constructions that remain permanently submerged. The species, which was also present in the harbour of Zeebrugge has shown a remarkable phenomenon. During the summer, some colonies get released from their substrate forming rather spherical, free living colonies. Both species, although only recently discovered, must have beer introduced some years or some decades earlier. The southern species Bugula neritina (Linnaeus, 1758) proved to be very common on a ship's hull at the end of March 1999. The yacht had not sailed very much and certainly not visited southern harbours This was the first occurrence of B. neritina in the Southern North Sea and so far the only one. This species has, contrary to the two former species, not yet established itself along the Belgian coast.

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