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Development of tolerance against toxic Microcystis aeruginosa in three cladocerans and the ecological implications
Guo, Nichun; Xie, Ping; Xie, P, Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biodivers China, Donghua Expt Stn Lake Ecosyst, Donghua S Rd 7, Wuhan 4300072, Peoples R China
2006-10-01
Source PublicationENVIRONMENTAL POLLUTION
ISSN0269-7491
Volume143Issue:3Pages:513-518
AbstractThis is the first experimental study to compare difference in the development of tolerance against toxic Microcystis among multi-species of cladocerans (Daphnia, Moina and Ceriodaphnia) pre-exposed to two M. aeruginosa PCC7820 strains (MC-containing and MC-free). Zooplankton were divided into S population (fed Scenedesmus), M-F population (fed Scenedesmus + MC-free Microcystis), and M-C population (fed Scenedesmus + MC-containing Microcystis). M-F and M-C populations were pre-exposed to Microcystis strains for 4 weeks, and their newborns were collected for experiments. A pre-exposure to MC-containing or MC-free Microcystis increased tolerance against toxic Microcystis. The marked increases in survival rate and median lethal time (LT50, 100-194% increase) in the M-C population of Ceriodaphnia suggest that small-sized cladocerans may develop stronger tolerance against Microcystis than large-sized ones when both groups are exposed to toxic Microcystis. This may explain why dominant Daphnia is usually replaced by small-sized cladocerans when cyanobacteria bloomed in summer in eutrophic lakes. (c) 2005 Elsevier Ltd. All rights reserved.; This is the first experimental study to compare difference in the development of tolerance against toxic Microcystis among multi-species of cladocerans (Daphnia, Moina and Ceriodaphnia) pre-exposed to two M. aeruginosa PCC7820 strains (MC-containing and MC-free). Zooplankton were divided into S population (fed Scenedesmus), M-F population (fed Scenedesmus + MC-free Microcystis), and M-C population (fed Scenedesmus + MC-containing Microcystis). M-F and M-C populations were pre-exposed to Microcystis strains for 4 weeks, and their newborns were collected for experiments. A pre-exposure to MC-containing or MC-free Microcystis increased tolerance against toxic Microcystis. The marked increases in survival rate and median lethal time (LT50, 100-194% increase) in the M-C population of Ceriodaphnia suggest that small-sized cladocerans may develop stronger tolerance against Microcystis than large-sized ones when both groups are exposed to toxic Microcystis. This may explain why dominant Daphnia is usually replaced by small-sized cladocerans when cyanobacteria bloomed in summer in eutrophic lakes. (c) 2005 Elsevier Ltd. All rights reserved.
SubtypeArticle
KeywordCladoceran Microcystis Aeruginosa Pcc7820 Microcystin Tolerance Development Growth Survival Rate
DepartmentChinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biodivers China, Donghua Expt Stn Lake Ecosyst, Wuhan 4300072, Peoples R China
Subject AreaEnvironmental Sciences
DOI10.1016/j.envpol.2005.11.044
WOS HeadingsScience & Technology ; Life Sciences & Biomedicine
Indexed BySCI
Language英语
WOS Research AreaEnvironmental Sciences & Ecology
WOS SubjectEnvironmental Sciences
WOS IDWOS:000238806200014
WOS KeywordBLUE-GREEN-ALGAE ; DAPHNIA POPULATION ; MIDSUMMER DECLINE ; EUTROPHIC LAKE ; LIFE-HISTORY ; ZOOPLANKTON ; CYANOBACTERIUM ; BLOOMS ; SENSITIVITY ; LIMITATION
Citation statistics
Cited Times:61[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ihb.ac.cn/handle/152342/8924
Collection期刊论文
Corresponding AuthorXie, P, Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biodivers China, Donghua Expt Stn Lake Ecosyst, Donghua S Rd 7, Wuhan 4300072, Peoples R China
AffiliationChinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biodivers China, Donghua Expt Stn Lake Ecosyst, Wuhan 4300072, Peoples R China
Recommended Citation
GB/T 7714
Guo, Nichun,Xie, Ping,Xie, P, Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biodivers China, Donghua Expt Stn Lake Ecosyst, Donghua S Rd 7, Wuhan 4300072, Peoples R China. Development of tolerance against toxic Microcystis aeruginosa in three cladocerans and the ecological implications[J]. ENVIRONMENTAL POLLUTION,2006,143(3):513-518.
APA Guo, Nichun,Xie, Ping,&Xie, P, Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biodivers China, Donghua Expt Stn Lake Ecosyst, Donghua S Rd 7, Wuhan 4300072, Peoples R China.(2006).Development of tolerance against toxic Microcystis aeruginosa in three cladocerans and the ecological implications.ENVIRONMENTAL POLLUTION,143(3),513-518.
MLA Guo, Nichun,et al."Development of tolerance against toxic Microcystis aeruginosa in three cladocerans and the ecological implications".ENVIRONMENTAL POLLUTION 143.3(2006):513-518.
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