PMID: 15253043Jul 16, 2004Paper

Acute effects of Microcystis aeruginosa from the Patos Lagoon estuary, southern Brazil, on the microcrustacean kalliapseudes schubartii (Crustacea: Tanaidacea)

Archives of Environmental Contamination and Toxicology
W MontagnolliJ S Yunes

Abstract

Toxic blooms of the cyanobacterium Microcystis aeruginosa, a microcystin producer, have been observed in the past two decades in the Patos Lagoon estuary (southern Brazil). This cyanobacterium reaches the estuary from northern waters and accumulates as toxic blooms in the shallow margins of the environment. Microcystins are phosphatase (PP1 and PP2A) inhibitors and cause animal death via alteration of the liver cell cytoskeletons and intrahepatic hemorrhage. The massive accumulation of toxic material affects the survival of several benthonic estuarine local organisms. The tanaidacea Kalliapseudes schubartii is a benthonic estuarine species which occurs at high densities throughout the year in mixohaline areas of the Patos Lagoon. This microcrustacean is of high ecological relevance and plays an important role in the estuarine food web, as it is consumed on a large scale by estuarine fish. This work verifies the acute toxicity of aqueous extracts of M. aeruginosa RST9501 and of sediments spiked with lyophilized material of the same strain on K. schubartii; it also evaluates the sublethal effects on tanaidacean oxygen consumption rates and glycogen levels under acute exposure to M. aeruginosa aqueous extracts. The strain M. aerug...Continue Reading

Citations

Mar 24, 2007·Archives of Environmental Contamination and Toxicology·Zakaria A MohamedWafaa S Ali
Jan 15, 2013·Microbial Ecology·Hans W Paerl, Timothy G Otten
Jan 2, 2009·Journal of Toxicology and Environmental Health. Part B, Critical Reviews·José C Martins, Vítor M Vasconcelos
Mar 1, 2012·Marine Drugs·Aloysio da S Ferrão-Filho, Betina Kozlowsky-Suzuki
Nov 24, 2004·Comparative Biochemistry and Physiology. Toxicology & Pharmacology : CBP·Ireneusz MajsterekZofia Walter
Dec 30, 2006·Molecular Nutrition & Food Research·Marian E van ApeldoornGuido J I Bakker
Oct 13, 2017·Toxicon : Official Journal of the International Society on Toxinology·Nathan Dias MartinsAna Lúcia Kalinin

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