Occurrences of microcystis spp. and microcystins in some cyanobacterial blooms in freshwaters in Vietnam
Summary: This paper reports the analyses of cyanobacteria Microcystis spp. and toxin occurrence in bloom samples from some freshwater bodies in Vietnam. Six species of Microcystis (M. aeruginosa, M. botrys, M. panniformis, M. wessenbergii, M. flos-aquae and M. protocystis) were identified in 8 bloom samples collected from Lake Tri An (Đ Nai province), Lake Bien Ho and Lake Duc An (Gia Lai Province), Cua Ngan, Dap Da, Nhu Y, Ho Mung sites (Thua Thien Hue Province), Lake Hoan Kiem (Ha Noi). The results of the quantitative analyses of Microcystis spp. and screening of microcystin by ELISA in the water are presented. The cell density of Microcystis spp. ranged from 11x10 3 to 624,5x10 3 cells/ mL 1 and M. aeruginosa as the dominating species. In the water samples, microcystins detected by ELISA varied between 5.854 and 17.966 ng mL -1 . The results from toxin analyses showed that there was no correlation between the total biomass of Microcystis and microcystins concentration in the same sample.
Type: Domestic
Author: Nguyễn Thị Thu Liên, Nguyen Thi Thu Trang & Tran Thi My Hoa
Unit: Director board of Institute
Journal:VNU Joumal of Science, Natural Sciences and Technology (0866-8612)
Issue, Number, Pages26, 172-177
ISSN/ISBN:0866-8612
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Year of publication: 2010
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