Green tide and fish mortality along Calicut coast

Kaladharan, P and Asokan, P K (2012) Green tide and fish mortality along Calicut coast. Marine Fisheries Information Service; Technical and Extension Series (211). pp. 11-12.

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Abstract

Intense greenish brown coloured bloom was noticed in the Arabian Sea along the Calicut coast, on 27.09.2011, which lasted up to 17.10.2011 (Fig. 1). The blooming organism was identified as the “green tide” forming alga, Chattonella marina (Subrahmanyan) Hara & Chihara,1982. Fresh samples when observed under microscope which exhibited active movement aided by flagella and had many bright green disc shaped chromatophores distributed throughout the cell (Fig. 2). The samples when preserved in formalin, formed a jelly like mass.

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