On the control of HAB species using low biosurfactant concentrations

On the control of HAB species using low biosurfactant concentrations

7 pages, 2 figures, 2 tables

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Bibliographic Details
Main Authors: Gustafsson, S., Hultberg, M., Figueroa, Rosa Isabel, Rengefors, Karin
Format: artículo biblioteca
Language:English
Published: Elsevier 2009-04-11
Subjects:Alexandrium minutum, Gonyostomum semen, Harmful algal blooms, Karenia brevis, Microcystis aeruginosa, Pseudonitzschia, Rhamnolipids,
Online Access:http://hdl.handle.net/10261/15204
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spelling dig-icm-es-10261-152042022-12-14T10:23:49Z On the control of HAB species using low biosurfactant concentrations Gustafsson, S. Hultberg, M. Figueroa, Rosa Isabel Rengefors, Karin Alexandrium minutum Gonyostomum semen Harmful algal blooms Karenia brevis Microcystis aeruginosa Pseudonitzschia Rhamnolipids 7 pages, 2 figures, 2 tables Biosurfactants have been suggested as a method to control harmful algal blooms (HABs), but warrant further and more in-depth investigation. Here we have investigated the algicidal effect of a biosurfactant produced by the bacterium Pseudomonas aeruginosa on five diverse marine and freshwater HAB species that have not been tested previously. These include Alexandrium minutum (Dinophycaee), Karenia brevis (Dinophyceae), Pseudonitzschia sp. (Bacillariophyceae), in marine ecosystems, and Gonyostomum semen (Raphidophyceae) and Microcystis aeruginosa (Cyanophyecae) in freshwater. We examined not only lethal but also sub-lethal effects of the biosurfactant. In addition, the effect of the biosurfactant on Daphnia was tested. Our conclusions were that very low biosurfactant concentrations (5 μg mL−1) decreased both the photosynthesis efficiency and the cell viability and that higher concentrations (50 μg mL−1) had lethal effects in four of the five HAB species tested. The low concentrations employed in this study and the diversity of HAB genera tested suggest that biosurfactants may be used to either control initial algal blooms without causing negative side effect to the ecosystem, or to provoke lethal effects when necessary This study was supported by grants from the Swedish Research Council for Environment, Agricultural Sciences and Spatial Planning (FORMAS) to M. Hultberg and K. Rengefors. R.I. Figueroa's work was supported by an I3P postdoctoral grant from the Spanish Ministry of Education and Science Peer reviewed 2009-07-22T08:12:17Z 2009-07-22T08:12:17Z 2009-04-11 artículo http://purl.org/coar/resource_type/c_6501 Harmful Algae 8(6): 857-863 (2009) 1568-9883 http://hdl.handle.net/10261/15204 10.1016/j.hal.2009.04.002 en https://doi.org/10.1016/j.hal.2009.04.002 none 530832 bytes application/pdf Elsevier
institution ICM ES
collection DSpace
country España
countrycode ES
component Bibliográfico
access En linea
databasecode dig-icm-es
tag biblioteca
region Europa del Sur
libraryname Biblioteca del ICM España
language English
topic Alexandrium minutum
Gonyostomum semen
Harmful algal blooms
Karenia brevis
Microcystis aeruginosa
Pseudonitzschia
Rhamnolipids
Alexandrium minutum
Gonyostomum semen
Harmful algal blooms
Karenia brevis
Microcystis aeruginosa
Pseudonitzschia
Rhamnolipids
spellingShingle Alexandrium minutum
Gonyostomum semen
Harmful algal blooms
Karenia brevis
Microcystis aeruginosa
Pseudonitzschia
Rhamnolipids
Alexandrium minutum
Gonyostomum semen
Harmful algal blooms
Karenia brevis
Microcystis aeruginosa
Pseudonitzschia
Rhamnolipids
Gustafsson, S.
Hultberg, M.
Figueroa, Rosa Isabel
Rengefors, Karin
On the control of HAB species using low biosurfactant concentrations
description 7 pages, 2 figures, 2 tables
format artículo
topic_facet Alexandrium minutum
Gonyostomum semen
Harmful algal blooms
Karenia brevis
Microcystis aeruginosa
Pseudonitzschia
Rhamnolipids
author Gustafsson, S.
Hultberg, M.
Figueroa, Rosa Isabel
Rengefors, Karin
author_facet Gustafsson, S.
Hultberg, M.
Figueroa, Rosa Isabel
Rengefors, Karin
author_sort Gustafsson, S.
title On the control of HAB species using low biosurfactant concentrations
title_short On the control of HAB species using low biosurfactant concentrations
title_full On the control of HAB species using low biosurfactant concentrations
title_fullStr On the control of HAB species using low biosurfactant concentrations
title_full_unstemmed On the control of HAB species using low biosurfactant concentrations
title_sort on the control of hab species using low biosurfactant concentrations
publisher Elsevier
publishDate 2009-04-11
url http://hdl.handle.net/10261/15204
work_keys_str_mv AT gustafssons onthecontrolofhabspeciesusinglowbiosurfactantconcentrations
AT hultbergm onthecontrolofhabspeciesusinglowbiosurfactantconcentrations
AT figueroarosaisabel onthecontrolofhabspeciesusinglowbiosurfactantconcentrations
AT rengeforskarin onthecontrolofhabspeciesusinglowbiosurfactantconcentrations
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