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| Fucus spiralis L. |
Fucus spiralis is a species of seaweed, a brown alga (Heterokontophyta, Phaeophyceae), living on the littoral shore of the Atlantic coasts of Europe and North America. Carl Linnaeus (Latinized as Carolus Linnaeus, also known after his ennoblement as, May 23 new style (13 May old style 1707 who laid the foundations for The Phaeophyceae or brown algae, (singular alga is a large group of mostly marine multicellular Algae including many Seaweeds of colder The Phaeophyceae or brown algae, (singular alga is a large group of mostly marine multicellular Algae including many Seaweeds of colder It has the common names of spiral wrack and flat wrack.
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Description
Fucus spiralis is olive brown in colour and similar to Fucus vesiculosus and Fucus serratus. Fucus vesiculosus, known by the common name Bladder wrack, is a Seaweed found on the coasts of the North Sea, the western Baltic Sea Fucus serratus is a Seaweed of the north Atlantic Ocean, known as toothed wrack or serrated wrack. It grows to about 30 cms long and branches somewhat irregularily dichotomous. It attached by a discoid holdfast. The flattened blade has a distinct mid-reb and is usually spirally twisted without a serrated edge, as are to be seen in Fucus serratus, and it does not show air-vesicles, as is Fucus vesiculosus. [1][2]
Life history
The reproductive bodies form rounded swollen tips on the branches, usually in pairs. In the conceptacles oögonia and antheridia are produced after meiosis and then released. An oogonium (plural oogonia) is an Immature ovum. It is a female Gametogonium. An antheridium (plural antheridia) is a Haploid structure or organ producing and containing male Gametes (called antherozoids or Sperm In Biology or life science meiosis (pronounced my-oh-sis is a process of reductional division in which the number of chromosomes per cell is cut in half Fertilisation follows and the zygote develops directly into the diploid sporophyte plant. For other meanings see Zygote (disambiguation. A zygote (from Greek ζυγωτός zugōtos "joined" or "yoked" "Haplo" redirects here For the fictional character see The Death Gate Cycle. All land plants and some Algae, have life cycles in which a haploid Gametophyte generation alternates with a Diploid sporophyte, the generation of a
Ecology
The other common species of Fucus on the coasts of British Isles: Fucus spiralis, Fucus vesiculosus and Fucus serratus along with Ascophyllum nodosum form the main and dominant seaweeds on rocky shores. Fucus is a Genus of Brown alga ( Seaweed) in the Class Phaeophyceae to be found in the intertidal zones of rocky shores The British Isles (Irish variously Na hOileáin Bhriotanacha, Oileáin Iarthair Eorpa, Éire agus an Bhreatain Mhór; Ellanyn Goaldagh Eileanan Ascophyllum nodosum is a large common Brown alga, in the Class Phaeophyceae. These three species, along with two others Pelvetia canaliculata and Ascophyllum nodosum form a series of zones along the shore. Pelvetia canaliculata (L Dcne et Thur (channelled wrack is a very common brown Seaweed ( Phaeophyta) found on the rocks of the upper shores of Ascophyllum nodosum is a large common Brown alga, in the Class Phaeophyceae. [3]
Distribution
F. spiralis is common on the coasts all around the British Isles. The British Isles (Irish variously Na hOileáin Bhriotanacha, Oileáin Iarthair Eorpa, Éire agus an Bhreatain Mhór; Ellanyn Goaldagh Eileanan [4] western coasts of Europe, Canary Islands and North-eastern America.
References
- ^ Newton, L. 1931. A Handbook of the British Seaweeds. British Museum, Natural History, London
- ^ Taylor,W. R. 1972. Marine Algae of the Northeastern Coast of North America. Ann Arbor, University of Michigan Press
- ^ Lewis, J. R. 1964. The Ecology of Rocky Shores. The English Universities Press.
- ^ Hardy, G. and Guiry, M. D. 2006. A Check-list and Atlas of the Seaweeds of Britain and Ireland. British Phycological Society
See also
This Algae-related article is a stub. Fucus vesiculosus, known by the common name Bladder wrack, is a Seaweed found on the coasts of the North Sea, the western Baltic Sea Fucus serratus is a Seaweed of the north Atlantic Ocean, known as toothed wrack or serrated wrack. Algae ( sing. alga are a large and diverse group of simple typically Autotrophic organisms ranging from Unicellular to Multicellular forms You can help Wikipedia by expanding it.