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2002•Eprints@CMFRI Open Access Institutional Repository (Central Marine Fisheries Research Institute)Open access

Cost effective medium for the laboratory culture of live feed micro algae

P Kaladharan, R Gireesh, K S Smitha

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Abstract

Extracts of the green seaweed Ulva lactuca promoted the growth and the multiplication of \nthree species of micro algae, Tetraselmis gracilis, Isochrysis galbana and Chaetoceros calcitrarzs \n250-325% more than those cultures supplemented with vitamins (B, and B,,). When these \nmicroalgae were cultured in seawater supplemented with varying levels of extracts of garden \nsoil and Ulva lactuca, Isochrysis galbana and Tetraselmis gracilis registered 16% and 58% \nincrease in growth respectively and 19% decrease in growth by Chaetoceros. The results are \ndiscussed in the light of preparations of a low cost effective and ready to use recipe for the \nmass culture of these live feed organisms.

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Extracts of the green seaweed Ulva lactuca promoted the growth and the multiplication of \nthree species of micro algae, Tetraselmis gracilis, Isochrysis galbana and Chaetoceros calcitrarzs \n250-325% more than those cultures supplemented with vitamins (B, and B,,). When these \nmicroalgae were cultured in seawater supplemented with varying levels of extracts of garden \nsoil and Ulva lactuca, Isochrysis galbana and Tetraselmis gracilis registered 16% and 58% \nincrease in growth respectively and 19% decrease in growth by Chaetoceros. The results are \ndiscussed in the light of preparations of a low cost effective and ready to use recipe for the \nmass culture of these live feed organisms.

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Available abstract

Extracts of the green seaweed Ulva lactuca promoted the growth and the multiplication of \nthree species of micro algae, Tetraselmis gracilis, Isochrysis galbana and Chaetoceros calcitrarzs \n250-325% more than those cultures supplemented with vitamins (B, and B,,). When these \nmicroalgae were cultured in seawater supplemented with varying levels of extracts of garden \nsoil and Ulva lactuca, Isochrysis galbana and Tetraselmis gracilis registered 16% and 58% \nincrease in growth respectively and 19% decrease in growth by Chaetoceros. The results are \ndiscussed in the light of preparations of a low cost effective and ready to use recipe for the \nmass culture of these live feed organisms.

Key concepts: Isochrysis galbana, Ulva lactuca, Algae, Tetraselmis, Chaetoceros, Tetraselmis suecica, Biology, Botany

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