Chronic effects of cyanobacterial toxins on Daphnia magna and their offspring

Toxicon : Official Journal of the International Society on Toxinology
Thanh Son DaoClaudia Wiegand

Abstract

The zooplankton grazer Daphnia magna endures living in water bodies up to moderate densities of cyanobacteria, such as Microcystis spp., known for producing toxic secondary metabolites. Although daphnids are affected via decreased food filtering, inhibition of digestive proteases and lethality, development of tolerance against cyanobacterial toxins has also been observed. Aim of our study was to investigate in detail chronic effects of cyanobacterial toxins, with emphasis on microcystin, on D. magna. The animals were exposed chronically for two generations to either microcystin-LR in 5 or 50 microg L(-1), or to cyanobacterial crude extract containing the same amount of total microcystin, starting at neonate stadium. Survival, growth, maturation and fecundity were observed for the first generation during two months. In the offspring survival, maturation, and growth were followed for the first week. Low concentration of microcystin-LR slightly affected the growth and reproduction of parent daphnids. Survivorship decreased during chronic exposure with increasing microcystin concentration. Age to maturity of the offspring increased and their survival decreased after parent generation was exposed to the toxin, even if the offspring ...Continue Reading

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Citations

Jun 1, 2014·Toxicon : Official Journal of the International Society on Toxinology·Aloysio S Ferrão-FilhoLuis Fernando Echeverri
May 14, 2014·Water Research·Jennifer D HochmuthKarel A C De Schamphelaere
Apr 26, 2011·Journal of Hazardous Materials·Kai-Sung WangShih-Hsien Chang
Sep 12, 2015·Environmental Toxicology and Chemistry·Jennifer D HochmuthKarel A C De Schamphelaere
Aug 10, 2010·Toxicon : Official Journal of the International Society on Toxinology·Rafael Ortiz-Rodríguez, Claudia Wiegand
Oct 16, 2015·Aquatic Toxicology·Elisabeth J FaassenMiquel Lürling
Jul 22, 2014·Environmental Toxicology and Chemistry·Jennifer D Hochmuth, Karel A C De Schamphelaere
May 27, 2015·Chembiochem : a European Journal of Chemical Biology·Verena GrundlerKarl Gademann
Jan 15, 2014·Toxicon : Official Journal of the International Society on Toxinology·Marie SmutnáLudek Bláha
Aug 12, 2015·Journal of Toxicology and Environmental Health. Part a·Daniel Ferreira HolderbaumThomas Bøhn
Jan 29, 2014·Toxicon : Official Journal of the International Society on Toxinology·Rosa María Pineda-MendozaFernando Martínez-Jerónimo
Jan 12, 2012·Toxicon : Official Journal of the International Society on Toxinology·Marie-Claude PerronPhilippe Juneau
Jan 3, 2015·Toxicon : Official Journal of the International Society on Toxinology·Natalia A HerreraAloysio S Ferrão-Filho
Sep 13, 2014·Environmental Science and Pollution Research International·Xuexia ZhuZhou Yang
Oct 1, 2014·Environmental Science & Technology·Ellen BesselingAlbert A Koelmans
May 18, 2020·Harmful Algae·Gorenka Bojadzija SavicClaudia Wiegand
Mar 16, 2021·Toxicon : Official Journal of the International Society on Toxinology·Gorenka Bojadzija SavicClaudia Wiegand
Jul 28, 2012·The Journal of Experimental Biology·Rafael Ortiz-RodríguezClaudia Wiegand

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