Odonthalia dentata — Details

A Red Seaweed learn more about names for this taxon

Overview

Comprehensive Description

Description

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 Brownish-red to deep purple in colour, darkening with age, with a glossy surface. Frond 2-6 cm across, regularly alternately notched with sharply pointed apices, and thickened in centre forming a midrib in older parts of the plant. Fronds attached to the substratum by a solid discoid holdfast 5-13 mm in diameter, composed of fused radiating, root like, rhizomes.Fronds are perennial but plants on mobile substrata do not survive the winter.
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Description

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Thallus to 30 cms or more in length, compressed with midrib, alternately branched with short branchlets notched at the apices. The thallus is tough, cartilaginous and dark brownish to deep purple in colour.
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Source: Encyclopedia of Marine Life of Britain and Ireland

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Distribution

Distribution

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Scotian Shelf to the Strait of Belle Isle, and extending northward
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Source: World Register of Marine Species

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Distribution

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European waters (ERMS scope), Irish Exclusive economic Zone, North West Atlantic, United Kingdom Exclusive Economic Zone
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Source: World Register of Marine Species

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Distribution

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Clearly of northern distribution. In the British Isles recorded from Scotland, north-east England, north of Ireland and Isle of Man. Europe: Baltic Sea, Faroes, Spitzbergen and Iceland. Greenland. Atlantic coast of North America: Canada. Further afield: Arctic Sea including Hudson Strait and Baffin Bay.
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Source: Encyclopedia of Marine Life of Britain and Ireland

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Physical Description

Diagnostic Description

Morphology

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Red colour results from the dominance of the pigments phycoerythrin and phycocyanin; this masks the other pigments, chlorophyll a (no chlorophyll b), beta-caratene and a number of unique xanthophylls.
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Source: World Register of Marine Species

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Ecology

Habitat

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Depth range based on 181 specimens in 1 taxon.

Environmental ranges
  Depth range (m): 0 - 26

Graphical representation

Depth range (m): 0 - 26
 
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Source: Ocean Biogeographic Information System

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Habitat

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 Odonthalia dentata can be found growing on boulders, bedrock and mobile substrata in lower-shore pools and from near extreme low water to approximately 20 m depth. Found at moderately to extremely wave-exposed sites and at wave-sheltered sites with exposure to strong tidal currents.
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Habitat

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Common in the north. Epilithic and occasionally on stipes of Laminaria. Low littoral rock pools and sublittoral at 20 m.
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Source: Encyclopedia of Marine Life of Britain and Ireland

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Molecular Biology and Genetics

Molecular Biology

Statistics of barcoding coverage: Odonthalia dentata

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Barcode of Life Data Systems (BOLDS) Stats
Public Records: 0
Species: 11
Species With Barcodes: 1

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Source: Barcode of Life Data Systems (BOLD)

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