Seasonal studies on the carbohydrate content of some marine macroalgae in Gulf of Mannar coastal region, India
Abstract: Carbohydrates were analysed in 40 species of marine macroalgae belonging to three classes collected at seasonal intervals between April 2018 to March 2019 from the intertidal habitats in Gulf of manner coastal regions.Among the 40 dominant seaweeds 11 species belonged to Chlorophyceae, 13 species to Phaeophyceae and the remaining 16 species to Rhodophyceae. The carbohydrate content of seaweeds varied from 4.50±0.12 to 72.25±3.15 % of DW during the summer season. The percentage of carbohydrate content was maximum in Gracilaria verrucosa (72.25±3.15 % of DW) during the summer season and minimum in Turbinaria ornata (4.50±0.12 DW) during the summer season. The carbohydrate content of seaweeds varied from 5.50±0.17 to 48.38±3.04 % of DW during the pre-monsoon season. The maximum values were observed in Gracilaria corticata var. corticata the minimum content was observed in Padina pavonica. The carbohydrate content of seaweeds varied from 4.83±0.12 to 58.18±4.56 % of DW during the monsoon season. The maximum value was observed in Gracilaria corticata var corticata and the minimum was in Padina pavonica. The carbohydrate content of seaweeds varied from 7.36±0.16 to 67.25±2.41 % of DW during the post-monsoon season. The maximum value was observed in Acanthophora spicifera and the minimum content was observed in Sargassum ilicifolium.
Keywords: carbohydrate content / summer season / monsoon season / maximum value / corticata var / macroalgae / pavonica
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