Determine the amount of blue- green algae anatoxin-a in water ecosystems Guilan

Document Type : Research Paper

Author

Associate Professor, National Inland Water Aquaculture Institute, Bandar Anzali, Iran

Abstract

Summer blue- green algae (Cyanophyta) bloom playing a significant role in fish mortality in fish
farms.In order to determine the dominant blue-green algae toxicity eight species of cyanophyts in fish
farms were isolated and cultured.Then toxin levels anatoxin-a was measured by gas chromatography
with mass spectrometry (GC-MS) detection.The results showed that toxin levels in Aphanizomenon
flos- aquae with 19.91 μg/kg more than the other Species studied and the lowest in Oscillatoria sp.
with 1.53 μg/kg was estimated. Generally high blooms of cyanophyts, particularly two species of
Aphanizomenon flos- aquae and Anabaena flos-aquae can lead to mortality in fish farms.

Keywords

Main Subjects

References

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