Toxic cyanobacteria strains isolated from blooms in the Guadiana River (southwestern Spain)

This paper describes the occurrence of toxic cyanobacteria along the Guadiana River over its course between Mérida and Badajoz (Extremadura, Spain). Water sampling for phytoplankton quantification and toxin analysis was carried out regularly between 1999 and 2001 in six different locations, includin...

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Autores principales:	MORENO,ISABEL M, PEREIRA,PAULO, FRANCA,SUSANA, CAMEÁN,ANA
Lenguaje:	English
Publicado:	Sociedad de Biología de Chile 2004
Materias:	Cyanobacteria microcystins Guadiana Spain
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602004000300006
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spelling	oai:scielo:S0716-976020040003000062005-03-14Toxic cyanobacteria strains isolated from blooms in the Guadiana River (southwestern Spain)MORENO,ISABEL MPEREIRA,PAULOFRANCA,SUSANACAMEÁN,ANA Cyanobacteria microcystins Guadiana Spain This paper describes the occurrence of toxic cyanobacteria along the Guadiana River over its course between Mérida and Badajoz (Extremadura, Spain). Water sampling for phytoplankton quantification and toxin analysis was carried out regularly between 1999 and 2001 in six different locations, including two shallow, slow-flowing river sites, two streamed river sites and two drinking water reservoirs. The cyanobacterial community differed significantly between these locations, especially during the summer. The predominant genera were Microcystis, Oscillatoria, Aphanizomenon and Anabaena. Using an ELISA assay the total microcystin contents of natural water samples from the most eutrophic locations ranged from 0.10 _ 21.86 mg mcyst-LR equivalent·L-1 in Valdelacalzada and 0.10-11.3 µg mcyst-LR equivalent·L-1 in Vitonogales, and a seasonal variation of toxin content was observed. The amount of microcystins produced by each strain was determined by ELISA assay and the detection and identification of microcystin variants of three toxic strains of Microcystis aeruginosa was performed by high performance liquid chromatography (HPLC). The analysis of microcystins of the cultured strains revealed that toxin production was variable among different strains of M. aeruginosa isolated either from different blooms or from the same bloom.info:eu-repo/semantics/openAccessSociedad de Biología de ChileBiological Research v.37 n.3 20042004-01-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602004000300006en10.4067/S0716-97602004000300006
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Cyanobacteria microcystins Guadiana Spain
spellingShingle	Cyanobacteria microcystins Guadiana Spain MORENO,ISABEL M PEREIRA,PAULO FRANCA,SUSANA CAMEÁN,ANA Toxic cyanobacteria strains isolated from blooms in the Guadiana River (southwestern Spain)
description	This paper describes the occurrence of toxic cyanobacteria along the Guadiana River over its course between Mérida and Badajoz (Extremadura, Spain). Water sampling for phytoplankton quantification and toxin analysis was carried out regularly between 1999 and 2001 in six different locations, including two shallow, slow-flowing river sites, two streamed river sites and two drinking water reservoirs. The cyanobacterial community differed significantly between these locations, especially during the summer. The predominant genera were Microcystis, Oscillatoria, Aphanizomenon and Anabaena. Using an ELISA assay the total microcystin contents of natural water samples from the most eutrophic locations ranged from 0.10 _ 21.86 mg mcyst-LR equivalent·L-1 in Valdelacalzada and 0.10-11.3 µg mcyst-LR equivalent·L-1 in Vitonogales, and a seasonal variation of toxin content was observed. The amount of microcystins produced by each strain was determined by ELISA assay and the detection and identification of microcystin variants of three toxic strains of Microcystis aeruginosa was performed by high performance liquid chromatography (HPLC). The analysis of microcystins of the cultured strains revealed that toxin production was variable among different strains of M. aeruginosa isolated either from different blooms or from the same bloom.
author	MORENO,ISABEL M PEREIRA,PAULO FRANCA,SUSANA CAMEÁN,ANA
author_facet	MORENO,ISABEL M PEREIRA,PAULO FRANCA,SUSANA CAMEÁN,ANA
author_sort	MORENO,ISABEL M
title	Toxic cyanobacteria strains isolated from blooms in the Guadiana River (southwestern Spain)
title_short	Toxic cyanobacteria strains isolated from blooms in the Guadiana River (southwestern Spain)
title_full	Toxic cyanobacteria strains isolated from blooms in the Guadiana River (southwestern Spain)
title_fullStr	Toxic cyanobacteria strains isolated from blooms in the Guadiana River (southwestern Spain)
title_full_unstemmed	Toxic cyanobacteria strains isolated from blooms in the Guadiana River (southwestern Spain)
title_sort	toxic cyanobacteria strains isolated from blooms in the guadiana river (southwestern spain)
publisher	Sociedad de Biología de Chile
publishDate	2004
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602004000300006
work_keys_str_mv	AT morenoisabelm toxiccyanobacteriastrainsisolatedfrombloomsintheguadianariversouthwesternspain AT pereirapaulo toxiccyanobacteriastrainsisolatedfrombloomsintheguadianariversouthwesternspain AT francasusana toxiccyanobacteriastrainsisolatedfrombloomsintheguadianariversouthwesternspain AT cameanana toxiccyanobacteriastrainsisolatedfrombloomsintheguadianariversouthwesternspain
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Toxic cyanobacteria strains isolated from blooms in the Guadiana River (southwestern Spain)

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