Biology:Ulva intestinalis

From HandWiki
Short description: Species of marine chlorophyte green alga

Ulva intestinalis
Tufts of gutweed in Gullmarsfjorden at Sämstad 1.jpg
Scientific classification edit
(unranked): Viridiplantae
Division: Chlorophyta
Class: Ulvophyceae
Order: Ulvales
Family: Ulvaceae
Genus: Ulva
Species:
U. intestinalis
Binomial name
Ulva intestinalis
Synonyms
  • Enteromorpha intestinalis
Large green lumps of Ulva intestinalis floating among other brown algae in Brofjorden

Ulva intestinalis is a green alga in the family Ulvaceae, known by the common names sea lettuce, green bait weed, gutweed,[1] and grass kelp.[2] Until they were reclassified by genetic work completed in the early 2000s, the tubular members of the sea lettuce genus Ulva were placed in the genus Enteromorpha.[3]

Distribution

Generally world-wide.[4] It can be found in Bering Sea near Alaska, Aleutian islands, Puget Sound, Japan , Korea, Mexico, Philippines , and Russia .[5] Besides this, places it can be found in Israel, and in such European countries as Azores, Belgium, Denmark , Ireland, Norway , Poland , and in such seas as the Baltic, and Mediterranean Sea. It is also found in the shores of the Pacific Ocean including in New Zealand.[6][7]

Description

The fronds have branches and are completely tubular expanding in width to mid-thallus, reaching 15 cm long or more. The cells are irregularly arranged and the chloroplast is hood-shaped and placed to one side, generally with only one pyrenoid.[3][4] The species may be 10–30 centimetres (3.9–11.8 in) long and 6–18 millimetres (0.24–0.71 in) wide. They have rounded tips as well.[8] The alga may be reproductive at all times of the year, and has a life-cycle with alternation of generations, in which the gametophyte and sporophyte are isomorphic, having identical morphology.[4] In some references the species (Ulva intestinalis) is treated as two subspecies: ssp. intestinalis (L.) Link and ssp. compressa (L.) Link.[4][9]

In other languages

References

  1. ↑ "Gutweed". http://www.kscience.co.uk/as/module5/seashore_web_site/organisms/enteromorpha.htm. 
  2. ↑ Grass-kelp, Gutweed
  3. ↑ 3.0 3.1 Guiry, M.D., John, D.M., Rindi, F. and McCarthy, T.K. (Eds) 2007. New Survey of Clare Island. Volume 6: The Freshwater and Terrestrial Algae. p. 23. Royal Irish Academy. ISBN:978-1904890-31-7
  4. ↑ 4.0 4.1 4.2 4.3 Burrows, E.M. 1991. Seaweeds of the British Isles. Volume 2 Chlorophyta. British Museum (Natural History). ISBN:0-565-00981-8
  5. ↑ "Ulva intestinalis". Seaweed of Alaska. http://www.seaweedsofalaska.com/species.asp?SeaweedID=12. 
  6. ↑ 6.0 6.1 Guiry, M.D. (2012). "Ulva intestinalis Linnaeus, 1753". WoRMS. World Register of Marine Species. http://www.marinespecies.org/aphia.php?p=taxdetails&id=234471. 
  7. ↑ W. A., Nelson (2013). New Zealand seaweeds : an illustrated guide. Wellington, New Zealand: Te Papa Press. pp. 42. ISBN 9780987668813. OCLC 841897290. 
  8. ↑ "Gut weed - Ulva intestinalis". http://www.marlin.ac.uk/speciesfullreview.php?speciesID=4540. 
  9. ↑ Morton, O. 1994. Marine Algae of Northern Ireland. Ulster Museum ISBN:0 900761 28 8

Wikidata ☰ Q2708229 entry



Retrieved from "https://handwiki.org/wiki/index.php?title=Biology:Ulva_intestinalis&oldid=3588381"