Substrate preference and effects of medium with soil extract on growth of genus Coolia (Dinophyceae)

Fikri Akmal Khodzori, . and Aimimuliani Adam, . and Siti Raehanah Muhd Shaleh, . and Normawaty Mohammad Noor, . and Shahbudin Saad, . Substrate preference and effects of medium with soil extract on growth of genus Coolia (Dinophyceae). pp. 71-81. ISSN 1823-8556

Coolia is a benthic dinoflagellate that lives epiphytically with a substrate. It has been reported that several of the species produce biotoxins. Therefore this study was done to identify the substrate preferred by Coolia and the effect of media with soil extraction on the growth of the species of C. tropicalis and C. malayensis. Several substrates; the seagrass (Enhalus) seaweed (Sargassum Padina (Phaeophyta) Halimeda (Chlorophyta) and coral rubbles were collected and Coolias cell density was determined. C. tropicalis and C. malayensis were grown in ES-DK medium with and without soil extract at similar conditions. The specific growth rate division per day and generation time were determined for both species. Results showed that Coolia flourished in the substrate with a greater amount of thalus from brown macroalgae (Phaeophyta). While the cell density of C. Tropicalis was significantly higher in medium with soil extract C. malayensis was significantly higher in the medium without soil extract. This indicates that both species have similar basic requirements but differ in their specific needs. This information on the substrate and medium preferences increased our knowledge of the ecology of Coolia.

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Abstract

Coolia is a benthic dinoflagellate that lives epiphytically with a substrate. It has been reported that several of the species produce biotoxins. Therefore this study was done to identify the substrate preferred by Coolia and the effect of media with soil extraction on the growth of the species of C. tropicalis and C. malayensis. Several substrates; the seagrass (Enhalus) seaweed (Sargassum Padina (Phaeophyta) Halimeda (Chlorophyta) and coral rubbles were collected and Coolias cell density was determined. C. tropicalis and C. malayensis were grown in ES-DK medium with and without soil extract at similar conditions. The specific growth rate division per day and generation time were determined for both species. Results showed that Coolia flourished in the substrate with a greater amount of thalus from brown macroalgae (Phaeophyta). While the cell density of C. Tropicalis was significantly higher in medium with soil extract C. malayensis was significantly higher in the medium without soil extract. This indicates that both species have similar basic requirements but differ in their specific needs. This information on the substrate and medium preferences increased our knowledge of the ecology of Coolia.

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Item Type:	Article
AGROVOC Term:	Dinophyceae
AGROVOC Term:	Dinoflagellates
AGROVOC Term:	Phytoplankton
AGROVOC Term:	Cell culture
AGROVOC Term:	Culture substrates
AGROVOC Term:	Seaweeds
AGROVOC Term:	Sargassum
AGROVOC Term:	Padina
AGROVOC Term:	Phaeophyta
AGROVOC Term:	Chlorophyta
Depositing User:	Mr. AFANDI ABDUL MALEK
Last Modified:	24 Apr 2025 00:53
URI:	http://webagris.upm.edu.my/id/eprint/7802

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