Overview

Comprehensive Description

Description

 A tall shell, up to 15 cm high and 5 cm broad, with up to 9 moderately tumid whorls that form a spire with a concave profile. Protoconch bulbous, often of greater diameter than the next whorl and set more obliquely on the spire. Numerous pronounced spiral ridges present. Outer lip arises between spiral ridges 10-12 on last whorl. Shell white with a pale-yellow horny layer overlying the calcareous matter of the shell (periostracum).Similar to Colus gracilis but the spiral ridges are more pronounced, especially towards the apex, and the siphonal canal does not incline markedly to the left as it does in Colus gracilis. Occurrence in Britain may be adversely affected by seawater warming.
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Source: Marine Life Information Network

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Distribution

Colus gracilis as well as C. islandicus were imported from northern parts by fishers.
  • Backeljau, T. (1986). Lijst van de recente mariene mollusken van België [List of the recent marine molluscs of Belgium]. Koninklijk Belgisch Instituut voor Natuurwetenschappen: Brussels, Belgium. 106 pp.
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Source: World Register of Marine Species

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Range: 77°N to 36.8°N; 92°W to 0°W. Distribution: Greenland; Greenland: West Greenland, East Greenland; Canada; Canada: Baffin Island, Gulf of St. Lawrence, Quebec; USA: Massachusetts, New York, Virginia
  • North-West Atlantic Ocean species (NWARMS)
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Source: World Register of Marine Species

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Ecology

Habitat

bathyal 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 3 specimens in 1 taxon.
Water temperature and chemistry ranges based on 1 sample.

Environmental ranges
  Depth range (m): 11.425 - 14.17
  Temperature range (°C): 8.723 - 8.723
  Nitrate (umol/L): 3.459 - 3.459
  Salinity (PPS): 32.316 - 32.316
  Oxygen (ml/l): 6.816 - 6.816
  Phosphate (umol/l): 0.555 - 0.555
  Silicate (umol/l): 2.801 - 2.801

Graphical representation

Depth range (m): 11.425 - 14.17
 
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 Occurs on soft substrata from 10-3000 m.
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Wikipedia

Colus islandicus

Colus islandicus is a species of sea snail, a marine gastropod mollusk in the family Buccinidae, the true whelks.[1]

Contents

Description

Distribution

References

  1. ^ Colus islandicus (Mohr, 1786).  Retrieved through: World Register of Marine Species on 17 April 2010.
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