Overview

Distribution

Op aangespoeld plastic in Zeebrugge in 1999. Op 23 maart 2007 verzamelde F. Kerckhof een levend kolonietje op een schelpkokerworm op de Birkenfels boei.
  • De Blauwe, H. (2009). Mosdiertjes van de Zuidelijke Bocht van de Noordzee. Determinatiewerk voor België en Nederland. Uitgave Vlaams Instituut voor de Zee, Oostende: 464pp.
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© WoRMS for SMEBD

Source: World Register of Marine Species

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Physical Description

Morphology

Colonies grow as encrusting sheets on hard substrates or as a small ‘cornflake’ on erect hydroids or Bryozoa (Cellaria species). The colonies are reddish-orange in colour. Autozooids are oval to hexagonal in shape, and are flat or slightly convex with distinct sutures separating them. The frontal shield of the autozooids is smooth and fine-grained. It is evenly punctured with fine pores. The primary orifice is orbicular; there is a pair of small condyles and a slender quadrate lyrula. There is an erect peristome around the orifice; this extends onto the surface of the ovicell in fertile colonies. There is a small suboral avicularium, this is directed transversely and is positioned within the gap in the peristome. The avicularia have an acute triangular shaped mandible. There are no oral spines in this species.

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© Natural History Museum, London

Source: Bryozoa of the British Isles

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Diagnostic Description

Description

Vormt een roodoranje korst. Zoïden 0,5 tot 0,6 mm lang, ovaal tot zeshoekig, vlak of wat convex. Frontaal oppervlak gelijkmatig geperforeerd. De opening is rond en heeft kleine scharnierpunten en een tengere hoekige lyrula. De opgerichte rand rond de opening heeft een brede proximale opening. Geen orale stekels. Avicularia klein, in de proximale opening in de opgerichte rand rond de opening en dwars gericht. Mandibel driehoekig en hellend op het zoïdenoppervlak. Broedkamers breder dan lang, frontaal afgeplat en met vele kleine ronde of onregelmatige poriën.
  • De Blauwe, H. (2009). Mosdiertjes van de Zuidelijke Bocht van de Noordzee. Determinatiewerk voor België en Nederland. Uitgave Vlaams Instituut voor de Zee, Oostende: 464pp.
Creative Commons Attribution 3.0 (CC BY 3.0)

© WoRMS for SMEBD

Source: World Register of Marine Species

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Ecology

Habitat

This species has been found intertidally and down to 50m depth, encrusting both hard substrates and erect hydroids and Bryozoa.

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© Natural History Museum, London

Source: Bryozoa of the British Isles

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Depth range based on 2 specimens in 1 taxon.
Water temperature and chemistry ranges based on 2 samples.

Environmental ranges
  Depth range (m): 30 - 50.2
  Temperature range (°C): 10.558 - 11.905
  Nitrate (umol/L): 3.145 - 3.925
  Salinity (PPS): 34.671 - 35.178
  Oxygen (ml/l): 6.037 - 6.215
  Phosphate (umol/l): 0.239 - 0.382
  Silicate (umol/l): 2.295 - 2.314

Graphical representation

Depth range (m): 30 - 50.2

Temperature range (°C): 10.558 - 11.905

Nitrate (umol/L): 3.145 - 3.925

Salinity (PPS): 34.671 - 35.178

Oxygen (ml/l): 6.037 - 6.215

Phosphate (umol/l): 0.239 - 0.382

Silicate (umol/l): 2.295 - 2.314
 
Note: this information has not been validated. Check this *note*. Your feedback is most welcome.

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Dispersal

This species appears to be rare. Hincks (1862,1880) found a single specimen encrusting a shell from Start Bay, South Devon. Later Castric-Fey (1971) recorded it in Brittany. Occasional colonies have been found in Northumberland (Moore,1973) and east of Lundy (Hayward, 1977). It has been recorded as far south as the Straits of Gibraltar (Lopez de la Cuadra & Garcia-Gomez, 1993).

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© Natural History Museum, London

Source: Bryozoa of the British Isles

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Life History and Behavior

Reproduction

Ovicells are prominent, broader than long with the frontal surface perforated by numerous small round pores.

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© Natural History Museum, London

Source: Bryozoa of the British Isles

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