Articles on this page are available in 1 other language: Dutch (1) (learn more)

Overview

Brief Summary

Gracilaria is a bright red or dark brown-black seaweed with typical hard 'knobs' where the reproduction cells are located. It is a typical 'summer seaweed'. The large dark form has been very common on the sandbanks in the Wadden Sea since 1995. It also grows in the delta region. You find it in the zone between high and low tide attached to rocks or gravel. Gracilaria is used for making agar, which is important in the scientific world, particularly for cultivating bacteria or fungi.
Creative Commons Attribution Non Commercial 3.0 (CC BY-NC 3.0)

© Copyright Ecomare

Source: Ecomare

Trusted

Article rating from 0 people

Default rating: 2.5 of 5

Comprehensive Description

Description

Thallus terete, rising from a small discoid holdfast terete to 60 cms long. Unbranched or variably branched, irregular. Cystocarps large, to 1 mm in diameter, produding as nodules. Cystoclonium purpureum can be distinguished by its branched holdfast and by the small cells in the centre of the thallus. Rhodomela confervoides shows a large cell in the centre surrounded by about 5 larger cells and others decreasing in size outwards.
Creative Commons Attribution Non Commercial Share Alike 3.0 (CC BY-NC-SA 3.0)

© National Museums Northern Ireland and its licensors

Source: Encyclopedia of Marine Life of Britain and Ireland

Trusted

Article rating from 0 people

Default rating: 2.5 of 5

Distribution

Widely distributed around the British Isles from the Shetlands to the Channel Islands. Europe: Mediterranean, Portugal, Atlantic coast of Spain, Netherlands, Helgoland, Baltic Sea and Norway. Atlantic coasts of America: from Canada to Brazil. Further afield: Bermuda, Canary Islands, Namibia, South Africa, India and in the Pacific Ocean from British Columbia to Baja California, Philippines and Fiji.
Creative Commons Attribution Non Commercial Share Alike 3.0 (CC BY-NC-SA 3.0)

© National Museums Northern Ireland and its licensors

Source: Encyclopedia of Marine Life of Britain and Ireland

Trusted

Article rating from 0 people

Default rating: 2.5 of 5

Ecology

Habitat

Depth range based on 69 specimens in 1 taxon.
Water temperature and chemistry ranges based on 1 sample.

Environmental ranges
  Depth range (m): 0 - 23
  Temperature range (°C): 11.721 - 11.721
  Nitrate (umol/L): 6.816 - 6.816
  Salinity (PPS): 35.333 - 35.333
  Oxygen (ml/l): 6.095 - 6.095
  Phosphate (umol/l): 0.399 - 0.399
  Silicate (umol/l): 2.742 - 2.742

Graphical representation

Depth range (m): 0 - 23
 
Note: this information has not been validated. Check this *note*. Your feedback is most welcome.

Trusted

Article rating from 0 people

Default rating: 2.5 of 5

Common. Epilithic in the lower littoral and sublittoral to 15 m.
Creative Commons Attribution Non Commercial Share Alike 3.0 (CC BY-NC-SA 3.0)

© National Museums Northern Ireland and its licensors

Source: Encyclopedia of Marine Life of Britain and Ireland

Trusted

Article rating from 0 people

Default rating: 2.5 of 5

Molecular Biology and Genetics

Molecular Biology

Barcode data: Gracilaria gracilis

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


Creative Commons Attribution 3.0 (CC BY 3.0)

© Barcode of Life Data Systems

Source: Barcode of Life Data Systems (BOLD)

Trusted

Article rating from 0 people

Default rating: 2.5 of 5

Statistics of barcoding coverage: Gracilaria gracilis

Barcode of Life Data Systems (BOLDS) Stats
Public Records: 1
Specimens with Barcodes: 8
Species With Barcodes: 1
Creative Commons Attribution 3.0 (CC BY 3.0)

© Barcode of Life Data Systems

Source: Barcode of Life Data Systems (BOLD)

Trusted

Article rating from 0 people

Default rating: 2.5 of 5

Disclaimer

EOL content is automatically assembled from many different content providers. As a result, from time to time you may find pages on EOL that are confusing.

To request an improvement, please leave a comment on the page. Thank you!