Detailed Information on Publication Record
2014
Acute, chronic and reproductive toxicity of complex cyanobacterial blooms in Daphnia magna and the role of microcystins
SMUTNÁ, Marie, Pavel BABICA, Sergio JARQUE ORTIZ, Klára HILSCHEROVÁ, Blahoslav MARŠÁLEK et. al.Basic information
Original name
Acute, chronic and reproductive toxicity of complex cyanobacterial blooms in Daphnia magna and the role of microcystins
Authors
SMUTNÁ, Marie (203 Czech Republic, belonging to the institution), Pavel BABICA (203 Czech Republic, belonging to the institution), Sergio JARQUE ORTIZ (724 Spain, belonging to the institution), Klára HILSCHEROVÁ (203 Czech Republic, belonging to the institution), Blahoslav MARŠÁLEK (203 Czech Republic, belonging to the institution), Maher HAEBA (434 Libya, belonging to the institution) and Luděk BLÁHA (203 Czech Republic, guarantor, belonging to the institution)
Edition
Toxicon, OXFORD, Elsevier Science, 2014, 0041-0101
Other information
Language
English
Type of outcome
Článek v odborném periodiku
Field of Study
10511 Environmental sciences
Country of publisher
United Kingdom of Great Britain and Northern Ireland
Confidentiality degree
není předmětem státního či obchodního tajemství
Impact factor
Impact factor: 2.492
RIV identification code
RIV/00216224:14310/14:00073577
Organization unit
Faculty of Science
UT WoS
000332444100002
Keywords in English
Cyanotoxin; Reproduction; Cyanobacterial bloom; Daphnia magna; Microcystin
Tags
International impact, Reviewed
Změněno: 20/1/2015 15:32, Ing. Andrea Mikešková
Abstract
V originále
Ecotoxicity of toxins from cyanobacteria such as microcystins has been studied extensively, little is known about the risks they pose in the wild, i.e. within complex biomasses. In this work, crustaceans (Daphnia magna) were exposed to varying concentrations (0-405 mg d.w L-1) of eight complex cyanobacterial water bloom samples in a series of acute (48 h) and chronic (21 day) toxicity experiments. Further acute and chronic exposure assays were performed using aqueous extracts of the crude biomass samples and two fractions prepared by solid phase extraction (SPE) of the aqueous extracts. High acute toxicity was observed for 6 of the 8 crude biomass samples. Chronic exposure assays were performed using one complex biomass sample and its various subsamples/fractions. The complex biomass, the crude aqueous extract, and the microcystin-free SPE permeate all elicited similar and significant lethal effects, with LC50 values of around 35.6 mg biomass d.w L-1 after 21 days. The cyanobacterial biomass samples also affected reproductive health, significantly increasing the time to the first brood (LOEC = 45 mg center dot d.w L-1 exposure) and inhibiting fecundity by 50% at 15 mg d.w L-1. Conversely, the microcystin-containing C18-SPE eluate fraction had only weak effects in the chronic assay. These results indicate that cyanobacterial water blooms are highly toxic to zooplankton (both acutely and chronically) at environmentally relevant concentrations. However, the effects observed in the acute and chronic assays were independent of the samples' microcystin contents. Our results thus point out the importance of other cyanobacterial components such as lipopolysaccharides, various peptides and depsipeptides, polar alkaloid metabolites or other unidentified metabolites in the overall ecotoxicity of complex cyanobacterial blooms.
Links
| EE2.3.30.0009, research and development project |
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| GAP503/12/0553, research and development project |
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