Overview

Comprehensive Description

General Description

Eucratea loricata is an erect bryozoan forming tall dense clumps about 10 cm in height. Colonies are whitish-brown in colour, highly branched and are said to resemble miniature poplar trees. The species is able to colonise a variety of substrates, from the lower shore down to 75 m and occasionally deeper. Colonies may also be found washed up along the strand line.
 
The species occurs throughout world and may be locally common on British coasts.

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Source: Bryozoa of the British Isles

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Description

 Eucratea loricata zooids form a tree-like colony up to 25 cm in height. The colony is whitish-brown and is attached to the substratum by a cluster of rhizoids. Branching is generally dichotomous, with branches arising at acute angles and all pairs in a branch in one plane. Individual zooids are elongated and narrower at their proximal or lower ends. They have no spines or avicularia.
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Source: Marine Life Information Network

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Distribution

Deze soort werd in 1905 en 1908 regelmatig verzameld op de Vlaamse Banken in het gebied omlijnd door 51°22’Noord, 51°27’Noord, 2°25’Oost en 2°31’ Oost (collectie Gilson in het KBIN) (De Blauwe et al., 2006). Loppens (1906) vond deze soort algemeen sublitoraal. Maitland (1851) meldt deze soort van het strand van Domburg, Lacourt (1949) voegt er Scheveningen, Den Helder en op een trawler in IJmuiden aan toe. Een aangespoelde kolonie werd aangetroffen in Wissant (Noord-Frankrijk) op 5 augustus 1987 (De Grave & d’Udekem d’Acoz, 1988). Geen recente waarnemingen.
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Source: World Register of Marine Species

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Gulf of St. Lawrence (unspecified region), Laurentian Channel (bathyal zone)(=Honguedo Strait), downstream part of middle St. Lawrence estuary, lower St. Lawrence estuary, southern Gaspe waters (Baie des Chaleurs, Gaspe Bay to American, Orphan and Bradelle banks; eastern boundary: eastern Bradelle Valley), northern Gaspe waters, middle North Shore (from Sept- Iles to Cape Whittle, including the Mingan Islands); Prince Edward Island (from the northern tip of Miscou Island, N.B. to Cape Breton Island south of Cheticamp, including the Northumberland Strait and Georges Bay to the Canso Strait causeway); boreal North Atlantic and in Arctic waters; Cobscook Bay
  • North-West Atlantic Ocean species (NWARMS)
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Source: World Register of Marine Species

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Physical Description

Diagnostic Description

Description

De kolonie vormt opgerichte bosjes, gehecht aan het substraat met rhizoïden. De kolonie lijkt op een miniatuurpopulier, ongeveer 10 tot 25 cm hoog, witachtig bruin. Takken samengesteld uit zoïdenparen die rug-tegen-rug staan, alle paren in dezelfde richting georiënteerd. Zoïden langwerpig, distaal breder wordend. Polypide met 10–14 tentakels. Stekels en avicularia afwezig. Embryo’s ontwikkelen zich in niet-blijvende broedzakken, niet in broedkamers. Broedzakken membraneus, transparant en ontspringen aan het distale einde van het operculum.
  • 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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Source: World Register of Marine Species

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Ecology

Habitat

bathyal, infralittoral and circalittoral of the Gulf and estuary
  • North-West Atlantic Ocean species (NWARMS)
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Source: World Register of Marine Species

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Depth range based on 288 specimens in 2 taxa.
Water temperature and chemistry ranges based on 155 samples.

Environmental ranges
  Depth range (m): 0 - 2937
  Temperature range (°C): -1.535 - 15.578
  Nitrate (umol/L): 0.681 - 14.805
  Salinity (PPS): 10.036 - 39.023
  Oxygen (ml/l): 4.518 - 8.575
  Phosphate (umol/l): 0.091 - 1.044
  Silicate (umol/l): 1.537 - 19.161

Graphical representation

Depth range (m): 0 - 2937

Temperature range (°C): -1.535 - 15.578

Nitrate (umol/L): 0.681 - 14.805

Salinity (PPS): 10.036 - 39.023

Oxygen (ml/l): 4.518 - 8.575

Phosphate (umol/l): 0.091 - 1.044

Silicate (umol/l): 1.537 - 19.161
 
Note: this information has not been validated. Check this *note*. Your feedback is most welcome.

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 Eucratea loricata is found attached to a wide variety of substrata, from lower shore to about 75 m and occasionally deeper. It is often washed up on the strand line.
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Source: Marine Life Information Network

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Life History and Behavior

Behavior

Diet

Small microorganisms, including diatoms and other unicellular algae.
  • North-West Atlantic Ocean species (NWARMS)
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Source: World Register of Marine Species

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