Effects of a saxitoxin-producer strain of Cylindrospermopsis raciborskii (cyanobacteria) on the swimming movements of cladocerans

Environmental Toxicology
Aloysio da S Ferrão FilhoS M Azevedo

Abstract

This study evaluated the effects of a saxitoxin-producer strain (T3) of the cyanobacteria species Cylindrospermopsis raciborskii on the swimming movements of three cladoceran species (Daphnia gessneri, D. pulex, and Moina micrura). Acute toxicity bioassays were designed to access the effects of T3 strain, of a nonsaxitoxin producer strain (NPLP-1) of the same species and of a raw water sample from Funil reservoir (Rio de Janeiro, Brazil), that contained this and other cyanobacteria. In the acute bioassays, animals were exposed to C. raciborskii filaments or Funil water for 24-48 h and then transferred to food suspensions without cyanobacterial filaments for a further 48 h. During the exposure time to T3 strain filaments there was a decrease in the number of swimming individuals, with animals showing progressive immobilization. The same effect was observed with Funil water sample. Animals stayed alive on the bottom of the test tube and recovered swimming movements when transferred to food suspensions without toxic cells. This effect was not observed with the strain NPLP-1. The cladoceran D. pulex showed to be extremely sensitive to T3 strain and to Funil water containing C. raciborskii filaments, showing complete paralysis after...Continue Reading

References

Jan 1, 1986·Toxicon : Official Journal of the International Society on Toxinology·N A Mahmood, W W Carmichael
Jan 1, 1982·Toxicon : Official Journal of the International Society on Toxinology·W J AdelmanM Ikawa
May 1, 1995·Toxicon : Official Journal of the International Society on Toxinology·A P Negri, G J Jones
Aug 1, 1994·Scientific American·D M Anderson
Jul 22, 1999·Toxicon : Official Journal of the International Society on Toxinology·N LagosY Oshima
Feb 27, 2001·Toxicon : Official Journal of the International Society on Toxinology·C Y Chen, H N Chou
Apr 18, 2001·Toxicon : Official Journal of the International Society on Toxinology·A H DaranasJ J Fernández
May 16, 2002·The International Journal of Biochemistry & Cell Biology·N Nunes-TavaresA Hassón-Voloch
Jul 1, 1961·Biochemical Pharmacology·G L ELLMANR M FEATHER-STONE
Oct 27, 2004·Toxicon : Official Journal of the International Society on Toxinology·Isabel C G NogueiraVítor M Vasconcelos

❮ Previous
Next ❯

Citations

Mar 1, 2012·Marine Drugs·Aloysio da S Ferrão-Filho, Betina Kozlowsky-Suzuki
Dec 21, 2013·Environmental Toxicology and Chemistry·Aloysio S Ferrão-FilhoValeria F Magalhães
Aug 10, 2010·Toxicon : Official Journal of the International Society on Toxinology·Katia Soto-LiebeMónica Vásquez
Oct 28, 2008·Ecotoxicology and Environmental Safety·Maria Carolina S SoaresVera Huszar
Apr 15, 2008·Ecotoxicology and Environmental Safety·Aloysio da S Ferrão-FilhoSandra M F O Azevedo
Jan 27, 2012·Environmental Toxicology and Chemistry·Pedro A ZagattoAloysio S Ferrão-Filho
Apr 3, 2010·Environmental Pollution·Aloysio da S Ferrão-FilhoSandra M F O Azevedo
Jan 3, 2015·Toxicon : Official Journal of the International Society on Toxinology·Natalia A HerreraAloysio S Ferrão-Filho
Oct 21, 2016·Environmental Science and Pollution Research International·A C RietzlerA L Fonseca
Jul 24, 2014·Brazilian Journal of Biology = Revista Brasleira De Biologia·G C Restani, A L Fonseca
Dec 19, 2018·Scientific Reports·Fernanda BottegaEliane Roseli Winkelmann
Mar 20, 2019·Environmental Science and Pollution Research International·Aloysio da S Ferrão-FilhoBetina Kozlowsky-Suzuki

❮ Previous
Next ❯

Related Concepts

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.