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Overview

Brief Summary

Biology

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  • UNESCO-IOC Register of Marine Organisms
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© WoRMS for SMEBD

Source: World Register of Marine Species

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Comprehensive Description

Description

 A large hydroid 10-15 cm in height with a solitary polyp. The polyp and tentacles have a diameter of about 1.5 cm. Stems are erect, clustered together and fuse with each other towards the base of the colony, which has a tough yellowish coloured natural outer layer. The polyps are conical or flask shaped and richly coloured with various shades of pink to red. The polyp looks flower-like and consists of a central circlet of about 40 oral tentacles surrounded by about 20-30 paler but larger aboral tentacles. Polyps are often present only in the spring and are eaten by nudibranchs leaving the stems.
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©  The Marine Biological Association of the United Kingdom

Source: Marine Life Information Network

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Description

The stem of this hydroid has a tough, yellowish coloured tegument. Usually the stems are clustered together and fuse with each other towards the base of the colony. The polyp colour is pale pink through to red, and consists of a central circlet of oral tentacles surrounded by paler but larger aboral tentacles. Gonothecae arise within this inner set of tentacles. Overall height 100-150mm, diameter of the polyp and tentacles about 15mm. Could be confused with Tubularia larynx.
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© National Museums Northern Ireland and its licensors

Source: Encyclopedia of Marine Life of Britain and Ireland

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Distribution

This species is common on all coasts of the British Isles.
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© National Museums Northern Ireland and its licensors

Source: Encyclopedia of Marine Life of Britain and Ireland

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Ecology

Habitat

Depth range based on 301 specimens in 1 taxon.
Water temperature and chemistry ranges based on 42 samples.

Environmental ranges
  Depth range (m): 0 - 369
  Temperature range (°C): 0.602 - 12.941
  Nitrate (umol/L): 4.573 - 29.761
  Salinity (PPS): 32.789 - 35.540
  Oxygen (ml/l): 3.475 - 7.109
  Phosphate (umol/l): 0.333 - 2.322
  Silicate (umol/l): 2.440 - 55.813

Graphical representation

Depth range (m): 0 - 369

Temperature range (°C): 0.602 - 12.941

Nitrate (umol/L): 4.573 - 29.761

Salinity (PPS): 32.789 - 35.540

Oxygen (ml/l): 3.475 - 7.109

Phosphate (umol/l): 0.333 - 2.322

Silicate (umol/l): 2.440 - 55.813
 
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 Tubularia indivisa grows on various hard substrata in a wide range of water depths from rocks in the intertidal, or in shallow water near shore, and at great depths. It is particularly abundant on exposed to strong tidal currents.
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©  The Marine Biological Association of the United Kingdom

Source: Marine Life Information Network

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A characteristic species of current swept bedrock and boulders, which may attach to other substrata such as kelp stipes.
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© National Museums Northern Ireland and its licensors

Source: Encyclopedia of Marine Life of Britain and Ireland

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Wikipedia

Tubularia indivisa

Tubularia indivisa, commonly known as the oaten pipes hydroid, is a species of large hydroid native to the northeastern Atlantic Ocean, the North Sea, Norwegian Sea, and the English Channel. The conical solitary polyps are found on dull yellow unbranched stems that reach 10 to 15 cm (3.9 to 5.9 in) in height with a diameter of 1.5 cm (0.59 in). They may be fused to a small number of other individual stems at their bases. The pinkish to red polyps resemble flowers, having two concentric rings of tentacles, with the outer rings being paler and longer than the inner ring. At the center is a pale pink gonotheca. They are preyed upon by nudibranchs.[2][3]

References[edit]

  1. ^ WoRMS (2011). "Tubularia indivisa Linnaeus, 1758". In P. Schuchert. World Hydrozoa database. World Register of Marine Species. Retrieved February 6, 2012. 
  2. ^ Rose Edwards (2008). "Oaten pipes hydroid - Tubularia indivisa". Marine Life Information Network: Biology and Sensitivity Key Information Sub-programme, Plymouth: Marine Biological Association of the United Kingdom. Retrieved February 6, 2012. 
  3. ^ W. Bay-Nouailhat (2006). "Description of Tubularia indivisa". European Marine Life. Retrieved February 6, 2012. 
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