TAILIEUCHUNG - Báo cáo " Occurrences of microcystis spp. and microcystins in some cyanobacterial blooms in freshwater bodies in Vietnam "

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 ng 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. | VNU Journal of Science Natural Sciences and Technology 26 2010 172-177 Occurrences of microcystis spp. and microcystins in some cyanobacterial blooms in freshwater bodies in Vietnam Nguyen Thi Thu Lien Pham Nguyen Thu Trang Tran Thi My Hoa Department of Biology College of Sciences Hue University 77 Nguyen Hue Hue Vietnam Nhận ngày 16 tháng 3 năm 2010 Abstract. 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 Đồng 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 11x103 to 624 5x103 cells mL1 and M. aeruginosa as the dominating species. In the water samples microcystins detected by ELISA varied between and 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. Keywords cyanobacteria microcystins ELISA freshwaters Vietnam. 1. Introduction Microcystis spp. are planktonic cyanobacteria that distribute all over the world in freshwater bodies such as ponds lakes rivers and even in brackish or saline waters. They occur in dense colonies in eutrophic waters formed blooms 1 . Algal blooms can destroy views pollute water environment because they may consist of species that can produce toxic substances which can alter the quality of the water. Microcystins are cyclic heptapeptides majority produced by Microcystis spp. At Corresponding author. Tel. 84-054-832665. E-mail nthulien@ present at least 80 microcystin

• Báo cáo khoa học
• cyanobacterial blooms
• freshwater bodies
• natural sciences
• science and technology
• scientific reports
• research projects
• scientific research
• Summary of environmental technique doctoral thesis
• Synthesis of silver
• Synthesis of copper
• Synthesis of iron nanoparticles
• Controlling cyanobacterial blooms
• Fresh water body
• Environmental advances
• Monitoring cyanobacterial harmful algal blooms
• High spatiotemporal resolution
• Spatial temporal image fusion
• Broad wavelength algae index
• Satellite images
• Cyanobacterial scum
• Daphnia lumholtzi
• Chronic effects
• Tropical micro crustacean
• Herbivorous zooplankton
• Sub chronic
• Harmful cyanobacterial blooms
• Human health
• Microcystis spp
• Microscopic observation
• Morphological identification
• Dau Tieng reservoir
• Blooms of blue green algae
• Natural toxins
• Mental disorder
• Research methods
• Data collection methods
• Understanding scientific research
• Ensuring research validity
• Measurement techniques
• Sampling methods
• Scientific research capacity
• Educational institutions
• Policy and management studies
• Vietnam Academy for Ethnic minorities
• Scientific bases
• earth sciences
• Research
• VNU Journal of Science
• Action research
• linguistics
• Foreign Languages
• cooperative research
• Renewable energy
• Introduction to research
• Scientific investigation
• Scientific investigation research
• Experimental designs
• Measurement of variables
• Reading research
• Conducting and reading research
• Research process
• Research report
• Purpose of research
• Scientific method
• Conducting research
• The effect of university autonomy on training and scientific research
• Vietnam national university of agriculture
• Training and scientific research
• Vascular plant
• Flora
• Yen Tu
• Quang Ninh Research Forest
• statements and documents scientific reports
• medical reports
• medical knowledge
• medical research
• clinical trials
• medical management
• health care
• Methods in behavioral research
• Behavioral research
• Scientific understanding
• Fundamental research issues
• Measurement concepts
• Observational methods
• reading comprehension
• education
• optimal picket
• model creation
• urban expansion
• organizing spatial
• Journal of Science
• Journal of Technology
• Technology Management
• Research quality
• Strategy and policy
• Summary of Doctoral thesis
• Summary of Doctoral thesis in public Management
• State management
• Female scientific research human
• Research human resource development
• Scientific research and teaching
• Defense and security education
• Current situation and solutions
• Security education
• Structural biochemistry
• epigenetics
• MicroRNAs
• Tạp chí khoa học
• Tạp chí Công nghệ
• Quản lý công nghệ
• Human resources
• Science management
• Poliomyelitis vaccine Research
• Non Ri Maprec
• Production center