Scholarly record
DEVELOPMENT OF POTENTIAL TOXIC MICROALGAE FROM PSEUDO-NITZSCHIA IN FRONT OF BULGARIAN COAST
Abstract
The microalgae from a genus Pseudo-nitzschia are constantly presented in the plankton at the Bulgarian Black Sea coast. They are described as potential toxic and their monitoring is significant for the Black Sea’s ecosystem, fishing development and aquacultures. Aspects such as distribution density, biomass and bloom’s forming from this group of algae are explored in this article. Since 1996 to 2005, one great blooming of P.delicatissima is observed and the rest are below 5 000 x 103 cells/l. The frequencies and magnitudes of blooms of this group’s species decrease, which responds to the determined tendency during the last years for the decreasing of these events. The article aims to determine the place and role of Pseudo-nitzschia’s population in the phytoplankton society in the last years. The article describes the monitoring of one of the potentially toxic phytoplankton species Pseudo-nitzschia in the Black Sea. The aim is to outline the trend of development of this species during the last ten years up to the moment of starting the investigation of biotoxins in molluscan shelfish and other sea products in accordance with the requirements of EC and regulations in Chapter Fishery and Aquaculture.
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References6
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