Cultured Aquatic Species Information Programme Gracilaria spp

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Abstract: 

Thallus erect or prostrate (decumbent), branched subdichotomously, laterally, secondly, radially or irregularly; axes and branches terete to flattened. Attached to solid substratum by a small discoid holdfast or living on sandy bottoms with part of the thallus immersed in the sand. Sometimes loose lying or floating in calm waters. Uniaxial construction but appearing multiaxial, pseudoparenchymatous with a small celled medulla.
Life history triphasic with isomorphic gametophytes and tetrasporapytes. In the genus Gracilaria, cystocarps exhibit traversing nutritive cells between the carposporophyte and the pericarp and spermataagia are in pits or conceptacles. In the genus Gracilariopsis, cystocarps lack the traversing nutritive cells and spermatangia are superficial.

Keywords: 
Gracilaria seaweeds, Algues gracilaires, Gracilarias
Attachment: 
PDF icon FAO Aquaculture fact sheet - Gracilaria spp (, ).pdf
Article Source: 
Food and Agriculture Organization of the United Nations
Category: 
Basic Biology
Ecological Services
Microalgae
Processing methods
Seaweed composition
Uses of Seaweeds: Chemicals
Uses of Seaweeds: Feed
Uses of Seaweeds: Food
Uses of Seaweeds: Fuel or Energy
Uses of Seaweeds: Miscellaneous