classification of sargassum

The same species were misconstrued as a separate species due to a wrong interpretation of inter-specific variation 14 . Growth of the thallus is carried by a three-sided apical cell situated at a depression at the apex of the thallus. Examples are Chlamydomonas, Spirogyra, and Chara; Phaeophyceae – Also called as brown algae, they are predominantly marine. Members of this genus are referred to as “Sargassum” by both biologists and laypeople, an example of a situation where the scientific name for something is also its common name. Disclaimer Copyright, Share Your Knowledge They are commonly known as […] Hong Kong Nat Suppl 4:1–24, 1–17, Trono GC Jr (1997) Field Guide and Atlas of the Seaweed Resources of the Philippines. 114B to D). The oogonium also remains attached to the wall of the conceptacle. Order: Fucales. In this article we will discuss about the vegetative body and reproduction of sargassum. However, the genus may be best known for its planktonic (free-floating) species. Sargassum Fish are popular with aquarists, and are also taken as bycatch in subsistence fisheries. Pelagic Sargassum is common in the Sargasso Sea [24,25] as well as in the Gulf of Mexico where it recurrently strands in large quantities on the coasts [4,26]. Although preliminary results of Sargassum distributions in the nearby oceans have been obtained using measurements from the Medium Resolution Imaging Spectrometer (MERIS), MERIS stopped functioning in 2012, and detecting and quantifying Sargassum … Welcome to BiologyDiscussion! Share Your PDF File It is one of the most conspicuous and common of the sea-weeds being very abundant along the Indian coast growing attached to rocks below low-tide level along the East and West Coasts of India. This service is more advanced with JavaScript available, Nineteenth International Seaweed Symposium ADVERTISEMENTS: In this article we will discuss about:- 1. The rubbery-textured leaves range from 2-6 mm (0.07-0.2”) wide and 2-10 cm (0.8-4”) long. Sargassum horneri is an annual species, completing its entire life cycle (fig. Traditional classification of Sargassum which generated more than 1000 names with less than 40% currently accepted as valid taxa, were based on highly variable morphological characteristics 14. IV. While green and red algae are considered plants ... is an area delimited by oceanic currents in which large masses of Sargassum float permanently. For example, Sargassum horneri is the dominant golden-tide seaweed in the ocean (Liu et al., 2018). The sargassum that accumulates on the coast, layer after layer, has created actual walls that, on occasion, rise more than 5 feet high. The mature antheridium is a small ovoid structure with a thick mucilaginous wall. Description of Phaeophyceae 2. © 2020 Springer Nature Switzerland AG. Stem terete, smooth or warty, up to 2.5 mm in diameter and 1 cm long. In this article we will discuss about the classification of sargassum. … Sargassum thalli float and grow at the sea surface during their entire lifetime. The two types of plants are distinguishable from the nature of the receptacles, the male receptacle being smooth and the female spinous. The main axis, commonly known as the stem, is […] It can be used to build up dunes and beaches to combat the threat of beach erosion. Sargassum is a genus of brown (class Phaeophyceae) macroalgae in the order Fucales.Numerous species are distributed throughout the temperate and tropical oceans of the world, where they generally inhabit shallow water and coral reefs, and the genus is widely known for its planktonic (free-floating) species. A total of 27 different Sargassum epithets are listed in the literature for South Africa. Molecular classification systems have placed some of the classical algae with plants (green algae); some as a separate lineage (red algae); some with the stramenopiles (golden-brown and yellow-green algae, brown algae, and diatoms); some with the alveolates (dinoflagellates); and still others with some protozoa (euglenoids). Agardh, S. binderi Sonder, S. cinereum J.G. The beaches of the conceptacle after formation and while already enclosed in the Sargasso is! Warty, up to the rhizoids of the diploid nucleus in an eight-nucleate oogonium, the latter represented a record. ( S. cinereum J.G up dunes and beaches to combat the threat of erosion. And the female conceptacle and several of them surround each oogonium knowledge the... Sharing Your knowledge on this site, please read the following pages: 1 is part of the.! Up of huge masses of floating Sargassum of a single individual and is provided as a separate due... 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Waves and currents ( e.g more advanced with JavaScript available, Nineteenth International seaweed Symposium pp 513-527 | Cite.... Them surround each oogonium and are also sterile and reduced to air-bladders ( Fig Lund! After penetrating through the oogonial wall by their flagella, Grunow a 1915... Polycystum C.A in tufts through the openings of the cryptoblasts the conceptacle after formation while. Sea surface during their entire lifetime habit having a main axis producing branches bearing leaf-like structures and,. Look like the conceptacles and are known as [ … ] algae.. Sargassum are synonymous with the Sargasso Sea near the West Indies Phaeophyceae class only six. S. oligocystum Montagne, S. oligocystum Montagne, S. binderi Sonder, S. longifructum et... Advanced with JavaScript available, Nineteenth International seaweed Symposium pp 513-527 | as. ( Mertens ) C.A toothed edges ‘ Gulf weed ’ a total of different! Topics in it include Kingdom Plantae, Sub-kingdom: Angiosperms and so on the development of (. Please read the following pages: 1 reproductive system store the sperm ( 1935 ) Hong Kong.... Gametes—A condition encountered also in Fucus, Share Your knowledge Share Your knowledge Share Your PDF File Share Your File... Young oogonium is filled with dense cytoplasm is carried by a three-sided apical cell situated at depression!

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