Influence of aqueous extract of macroalga Hypnea musciformis Lamour and Codium tomentosum (Huds) stackhouse at different growth phases of microalgae Chlorella marina (Chlorophyta)

Christabell, Jonsy and Lipton, A P (2010) Influence of aqueous extract of macroalga Hypnea musciformis Lamour and Codium tomentosum (Huds) stackhouse at different growth phases of microalgae Chlorella marina (Chlorophyta). In: Proceedings of the National seminar on Role of Environmental Changes in the lower group biodiversity with special reference to algal diversity, February 9-10, 2010, WCC Nagercoil.

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Abstract

The microalgae Chlorella marina is used as live feed for feeding larvae and postlarvae of fish and shell-fish in hatcheries or aquaculture. Considering the different bioactivities of the extracts of Hypnea musciformis and Codium tomentosum, experiments were conducted to evaluate their influence on growth promotion in C. marina. The growth response of microalgae Chlorella marina was evaluated using Walne's medium supplemented with different dilutions of the aqueous extract of H. musciformis and C. tomentosum. Results indicated that 0.1 % w/v of the extract of both macroalgae reduced the growth of C. marina to an extent of 25% to 45% initially at its lag phase. A marked increase in growth was observed with the increasing concentrations of the extract compared to the control sets. At its exponential phase, C. marina registered 57.5% increase and 5% decrease in growth in 1 % w/v of the extract of H. musciformis and C. tomentosum respectively.

Item Type:Conference or Workshop Item (Paper)
Uncontrolled Keywords:aqueous extract; macroalga; Hypnea musciformis Lamour; Codium tomentosum; microalgae; Chlorella marina; Chlorophyta
Subjects:Biochemistry > Biochemical composition
Algae
Divisions:CMFRI-Cochin > Biodiversity
ID Code:8477
Deposited By:Arun Surendran
Deposited On:18 May 2011 12:33
Last Modified:18 May 2011 12:33

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