Overview

Distribution

In België in 2004 gevonden op keien op de Thorntonbank. Plaatselijk heel algemeen op keien tussen de Hinderbanken (juni 2005). In Zeeland groeiend op stenen en oesters in Westkapelle, Zoutelande, Buitenhaven van Vlissingen en de westelijke dam van de Sloehavens (Faasse & De Blauwe, 2004). Aangetroffen op de Klaverbank in 2002 (pers. med. van Moorsel G.). Heel algemeen op aangespoeld plastic.
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Source: World Register of Marine Species

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Gulf of St. Lawrence (unspecified region), northern Gaspe waters, southern Gaspe waters (Baie des Chaleurs, Gaspe Bay to American, Orphan and Bradelle banks; eastern boundary: Eastern Bradelle Valley), lower St. Lawrence estuary; 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); St. Andrews
  • North-West Atlantic Ocean species (NWARMS)
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Escharella immersa is a cold water, boreal-arctic species that is known form numerous north Atlantic locations, but does not seem to range further south than Britain. Within the British Isles, it is widespread and abundant off all coasts, extending south to the Scilly Isles.

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Source: Bryozoa of the British Isles

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Physical Description

Morphology

Escharella immersa is an encrusting bryozoan. Colonies form extensive white to grey thin sheets, with a flat uniform surface. Autozooids are oval, hexagonal or with an irregular outline. They are short and broad, typically 0.2-0.3 by 0.3-0.4 mm, with six spines. 

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Source: Bryozoa of the British Isles

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Diagnostic Description

Description

Vormt een uitgebreide witte korst. Zoïden slechts 0,3 tot 0,4 mm lang, ovaal tot zeshoekig, convex. De zoïden zijn aanvankelijk glazig, door verdere verkalking komt op de zoïdenrand een witte kalklijn te liggen. Enkel marginale poriën die eerst onopvallend zijn en in oudere zoïden duidelijker worden. De brede lyrula is aambeeldvormig met vaak een concave distale rand. Stompe scharnierpunten in de opening. 6 distale orale stekels zijn kenmerkend voor zoïden zonder broedkamer, bij een broedkamer komen er slechts 4 stekels voor. De rand rond de opening is opgericht en vormt proximaal van de opening een puntige bult. Polypide met 11-12 tentakels. Broedkamers breder dan lang, korrelig, verborgen door latere verkalking. Heel het jaar kunnen rode of roze embryo’s voorkomen. Ancestrula ovaal met frontaal membraan omringd door 10 of 11 grote stekels. Het proximale deel onder het frontale membraan is verkalkt.
  • 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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Ecology

Habitat

infralittoral of the Gulf and estuary
  • North-West Atlantic Ocean species (NWARMS)
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Depth range based on 50 specimens in 1 taxon.
Water temperature and chemistry ranges based on 24 samples.

Environmental ranges
  Depth range (m): 0 - 96
  Temperature range (°C): -0.262 - 11.905
  Nitrate (umol/L): 2.191 - 7.379
  Salinity (PPS): 28.357 - 35.178
  Oxygen (ml/l): 6.017 - 7.573
  Phosphate (umol/l): 0.113 - 0.897
  Silicate (umol/l): 2.052 - 8.544

Graphical representation

Depth range (m): 0 - 96

Temperature range (°C): -0.262 - 11.905

Nitrate (umol/L): 2.191 - 7.379

Salinity (PPS): 28.357 - 35.178

Oxygen (ml/l): 6.017 - 7.573

Phosphate (umol/l): 0.113 - 0.897

Silicate (umol/l): 2.052 - 8.544
 
Note: this information has not been validated. Check this *note*. Your feedback is most welcome.

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The species is able to colonise hard substrates (stones and shells) and occasionally the holdfasts of Laminaria kelp. It ranges from the lower shore into subtidal waters, becoming rare beyond 100 m. Escharella immersa is frequently found on offshore shell banks in association with Escharella ventricosa and Escharella variolosa. It has been recorded from brackish environments in the Bay of Fundy and the Baltic Sea.

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Source: Bryozoa of the British Isles

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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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Molecular Biology and Genetics

Molecular Biology

Barcode data: Escharella immersa

The following is a representative barcode sequence, the centroid of all available sequences for this species.


There is 1 barcode sequence available from BOLD and GenBank.   Below is the sequence of the barcode region Cytochrome oxidase subunit 1 (COI or COX1) from a member of the species.  See the BOLD taxonomy browser for more complete information about this specimen.  Other sequences that do not yet meet barcode criteria may also be available.

ACTTTATATTTCATTTTTGGATTATGATCTGGAATAGTTGGTAGGGGTTTA---AGGGCTTTAATTCGGGTAGAGTTAAATCAGCCTGGGAGGTTGTTGGCAAAT---GATCAATTATATAATGTTATTGTTACAGCTCATGCTTTGATGATAATTTTTTTTATGGTGATACCAGTTATAATTGGGGGGTTTGGTAATTGACTGGTTCCATTAATA---CTGGGAGCTCCTGATATAGCTTTTCCACGATTAAATAACATAAGGTTTTGATTATTACCACCAGCGGTCTATTTAATTTTATTATCCACTTTAGTAGAAAGTGGCGCTGGTACTGGTTGAACTATCTATCCTCCATTATCTCAAAATTTGGCCCATAGAGGTTCATCTGTGGATTTG---GCTATTTTTTCATTACATTTAGCAGGTGTGTCATCTATTTTAGGTGCGGTTAATTTTATAACTACAGTTTTTAATATGCGCCCAAATTCGATAAATTTCATAACTTTGCCTTTATTAGTTTGAGCTACTTTTATTACTGCTATTTTGTTATTGTTATCCCTTCCTGTGTTAGCTGGA---GCTATTACAATACTTTTAACTGATCGAAATCTTAATACTTCTTTTTTTGATCCGGCTGGAGGAGGGGATCCAGTATTGTTTCAACATTTG
-- end --

Download FASTA File
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Source: Barcode of Life Data Systems (BOLD)

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Statistics of barcoding coverage: Escharella immersa

Barcode of Life Data Systems (BOLDS) Stats
Public Records: 1
Specimens with Barcodes: 1
Species With Barcodes: 1
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Source: Barcode of Life Data Systems (BOLD)

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