Ulva


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Related to Ulva: sargassum, chlorella
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Ulva

 

(sea lettuce), a genus of algae of the family Ulvaceae of the order Uvales. The thallus is lamellate, entire, dissected, or branched; it is 30-150 cm long and consists of two tightly enclosed layers of cells. The approximately 20 species are most widely distributed in subtropical and temperate seas. Three species occur in the seas of the USSR. In Japan and some other countries sea lettuce is used as food.

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.
References in periodicals archive ?
Cell-wall polysaccharides from the marine green algae Ulva rigida (Ulvales, Chlorophyta)--3 NMR analyses of ulvan oligosaccharides.
Uptake of sewage derived nitrogen by Ulva rigida (Chlorophyeeae) in Bahfa Nueva (Golfo Nuevo.
Estos autores encontraron a Chaetomorpha antennina y a Ulva fasciata desarrollandose en escolleras, a U.
Keywords: Dissolved nutrients; Fertilizer; Heavy metals; Integrated multitrophic aquaculture (IMTA); Macroalgae; Ulva armoricana
The results demonstrated by Farvin and Jacobsen (2013) for the green algae Enteromorpha intestinalis (265.8) and Ulva lactuca (236.5) were higher than those for the red ones Palmaria palmata (76.9), Gracilaria vermiculophylla (95.2), Mastocarpus stellatus (102.5) and Chondrus crispus (113.6).
While the materials used are catalyst ([K.sub.2]S[O.sub.4] and CuS[O.sub.4]), concentrated [H.sub.2]S[O.sub.4], [H.sub.2][O.sub.2], [H.sub.3]B[O.sub.3], [Na.sub.2] (S[O.sub.4][).sub.3] (alkali), HCl, filter paper (lipid free), chloroform, aquadest, Gracilaria lichenoides, Ulva fasciata, and Abalone Haliotis squamata.
The marine macroalga Ulva fasciata has been utilized in the present work for the production of biodiesel.
Around 16 different fatty acids were identified in Ulva lactuca, in Sargassum wightii and in Kappaphycus alvarezii (29).
Uno de los problemas que presenta el engorde de esta especie en esta bahia, es la permanente colonizacion de macroalgas en especial las del genero Ulva spp., las cuales pueden vivir fijas o flotando libremente (Hayden & Waaland, 2004), a las que los maricultores de la zona atribuyen la causa de bajas tasas de crecimiento y supervivencia.
Recently, the marine algae Ulva lactuca (Chlorophyta) and Gracilaria salicornia (Rhodophyta) were also described as a potential food source by Tabarsa et al.