Control of Branchionus sp. and Amoeba sp. in cultures of Arthrospira sp.

Cultivation of cyanobacterium Arthrospira sp. has been developed in many countries for the production of proteins, pigments and other compounds. Outdoor mass cultures are often affected by biological contamination, drastically reducing productivity as far as bringing death. This study evaluates the...

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Autores principales:	Méndez,Carlos, Uribe,Eduardo
Lenguaje:	English
Publicado:	Pontificia Universidad Católica de Valparaíso. Facultad de Recursos Naturales. Escuela de Ciencias del Mar 2012
Materias:	Arthrospira Branchionus Amoeba predator control ammonium bicarbonate urea Chile
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-560X2012000300005
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spelling	oai:scielo:S0718-560X20120003000052013-01-03Control of Branchionus sp. and Amoeba sp. in cultures of Arthrospira sp.Méndez,CarlosUribe,Eduardo Arthrospira Branchionus Amoeba predator control ammonium bicarbonate urea Chile Cultivation of cyanobacterium Arthrospira sp. has been developed in many countries for the production of proteins, pigments and other compounds. Outdoor mass cultures are often affected by biological contamination, drastically reducing productivity as far as bringing death. This study evaluates the control of Branchionus sp. and Amoeba sp. with two chemical compounds: urea (U) and ammonium bicarbonate (AB), in laboratory conditions and outdoor mass culture of Arthrospira sp. The lethal concentration 100 (LC100) at 24 h for Branchionus sp. and Amoeba sp. determined was of 60-80 mg L-1 (U) and 100-150 mg L-1 (AB). The average effective inhibition concentration for 50% of the population (IC50) in Arthrospira sp., after 72 h, was 80 mg L-1 (U) and 150 mg L-1 (AB). The application of doses of 60 mg L-1 (U) or 100 mg L-1 (AB) in the outdoor mass culture of this contaminated microalga, completely inhibited grazing and did not affect the growth of Arthrospira sp. but rather promoted rapid recovery of algal density at levels prior to infestation. These compounds provided an economical and effective control of predators in cultures of Arthrospira sp.info:eu-repo/semantics/openAccessPontificia Universidad Católica de Valparaíso. Facultad de Recursos Naturales. Escuela de Ciencias del MarLatin american journal of aquatic research v.40 n.SpecIssue 20122012-09-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-560X2012000300005en103856/vol40-issue3-fulltext-5
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Arthrospira Branchionus Amoeba predator control ammonium bicarbonate urea Chile
spellingShingle	Arthrospira Branchionus Amoeba predator control ammonium bicarbonate urea Chile Méndez,Carlos Uribe,Eduardo Control of Branchionus sp. and Amoeba sp. in cultures of Arthrospira sp.
description	Cultivation of cyanobacterium Arthrospira sp. has been developed in many countries for the production of proteins, pigments and other compounds. Outdoor mass cultures are often affected by biological contamination, drastically reducing productivity as far as bringing death. This study evaluates the control of Branchionus sp. and Amoeba sp. with two chemical compounds: urea (U) and ammonium bicarbonate (AB), in laboratory conditions and outdoor mass culture of Arthrospira sp. The lethal concentration 100 (LC100) at 24 h for Branchionus sp. and Amoeba sp. determined was of 60-80 mg L-1 (U) and 100-150 mg L-1 (AB). The average effective inhibition concentration for 50% of the population (IC50) in Arthrospira sp., after 72 h, was 80 mg L-1 (U) and 150 mg L-1 (AB). The application of doses of 60 mg L-1 (U) or 100 mg L-1 (AB) in the outdoor mass culture of this contaminated microalga, completely inhibited grazing and did not affect the growth of Arthrospira sp. but rather promoted rapid recovery of algal density at levels prior to infestation. These compounds provided an economical and effective control of predators in cultures of Arthrospira sp.
author	Méndez,Carlos Uribe,Eduardo
author_facet	Méndez,Carlos Uribe,Eduardo
author_sort	Méndez,Carlos
title	Control of Branchionus sp. and Amoeba sp. in cultures of Arthrospira sp.
title_short	Control of Branchionus sp. and Amoeba sp. in cultures of Arthrospira sp.
title_full	Control of Branchionus sp. and Amoeba sp. in cultures of Arthrospira sp.
title_fullStr	Control of Branchionus sp. and Amoeba sp. in cultures of Arthrospira sp.
title_full_unstemmed	Control of Branchionus sp. and Amoeba sp. in cultures of Arthrospira sp.
title_sort	control of branchionus sp. and amoeba sp. in cultures of arthrospira sp.
publisher	Pontificia Universidad Católica de Valparaíso. Facultad de Recursos Naturales. Escuela de Ciencias del Mar
publishDate	2012
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-560X2012000300005
work_keys_str_mv	AT mendezcarlos controlofbranchionusspandamoebaspinculturesofarthrospirasp AT uribeeduardo controlofbranchionusspandamoebaspinculturesofarthrospirasp
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Control of Branchionus sp. and Amoeba sp. in cultures of Arthrospira sp.

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