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Intraspecific variability in Karlodinium veneficum: Growth rates, mixotrophy, and lipid composition

Albert Calbet, Mireia Bertos, Claudio Fuentes-Grünewald, Elisabet Alacid, Rosa Figueroa, Berta Renom, Esther Garcés, Claudio Fuentes Grunewald Orcid Logo

Harmful Algae, Volume: 10, Issue: 6, Pages: 654 - 667

Swansea University Author: Claudio Fuentes Grunewald Orcid Logo

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DOI (Published version): 10.1016/j.hal.2011.05.001

Abstract

We isolated eleven strains of the harmful algal bloom (HAB)-forming dinoflagellate Karlodinium veneficum during a bloom event in the NW Mediterranean coastal waters and we studied the inter-strain variability in several of their physiological and biochemical traits. These included autotrophic growth...

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Published in: Harmful Algae
ISSN: 15689883
Published: Elsevier 2011
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URI: https://cronfa.swan.ac.uk/Record/cronfa49746
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spelling 2019-04-04T10:43:09.3528032 v2 49746 2019-03-26 Intraspecific variability in Karlodinium veneficum: Growth rates, mixotrophy, and lipid composition 8d7cf97e82178c021883618d24acb4b4 0000-0002-3122-9452 Claudio Fuentes Grunewald Claudio Fuentes Grunewald true false 2019-03-26 SBI We isolated eleven strains of the harmful algal bloom (HAB)-forming dinoflagellate Karlodinium veneficum during a bloom event in the NW Mediterranean coastal waters and we studied the inter-strain variability in several of their physiological and biochemical traits. These included autotrophic growth parameters, feeding capabilities (mixotrophy), lipid composition, and, in some cases, their responses to biotic and abiotic factors. The strains were found to differ in their growth rates (0.27–0.53 d−1) and in the maximum cell concentrations achieved during stationary phase (6.1 × 104–8.6 × 104 cells mL−1). Their ingestion performance, when offered Rhodomonas salina as prey, was also diverse (0.22–1.3 cells per K. veneficum per day; 8–52% of their daily ration). At least two strains survived for several months under strict heterotrophic conditions (no light, low inorganic nutrients availability, and R. salina as food source). These strains also showed very distinct fatty acid compositions, with very low contents of monounsaturated and polyunsaturated fatty acids. According to a Bray Curtis similarity analysis, three or four strain groups able to perform different roles in bloom development were identified. We further analyzed one strain from each of the two most distinct groups with respect to prey concentration, light intensity, nutrient availability, and we determined the functional responses (growth and feeding rates) to food concentration. Taken together, the results served to highlight the role of mixotrophy and clone variability in the formation of HABs. Journal Article Harmful Algae 10 6 654 667 Elsevier 15689883 Dinoflagellate, Fatty acids, Growth, Grazing, Harmful algal blooms, Karlodinium veneficum 13 5 2011 2011-05-13 10.1016/j.hal.2011.05.001 COLLEGE NANME Biosciences COLLEGE CODE SBI Swansea University 2019-04-04T10:43:09.3528032 2019-03-26T15:57:58.2293222 Faculty of Science and Engineering School of Biosciences, Geography and Physics - Biosciences Albert Calbet 1 Mireia Bertos 2 Claudio Fuentes-Grünewald 3 Elisabet Alacid 4 Rosa Figueroa 5 Berta Renom 6 Esther Garcés 7 Claudio Fuentes Grunewald 0000-0002-3122-9452 8
title Intraspecific variability in Karlodinium veneficum: Growth rates, mixotrophy, and lipid composition
spellingShingle Intraspecific variability in Karlodinium veneficum: Growth rates, mixotrophy, and lipid composition
Claudio Fuentes Grunewald
title_short Intraspecific variability in Karlodinium veneficum: Growth rates, mixotrophy, and lipid composition
title_full Intraspecific variability in Karlodinium veneficum: Growth rates, mixotrophy, and lipid composition
title_fullStr Intraspecific variability in Karlodinium veneficum: Growth rates, mixotrophy, and lipid composition
title_full_unstemmed Intraspecific variability in Karlodinium veneficum: Growth rates, mixotrophy, and lipid composition
title_sort Intraspecific variability in Karlodinium veneficum: Growth rates, mixotrophy, and lipid composition
author_id_str_mv 8d7cf97e82178c021883618d24acb4b4
author_id_fullname_str_mv 8d7cf97e82178c021883618d24acb4b4_***_Claudio Fuentes Grunewald
author Claudio Fuentes Grunewald
author2 Albert Calbet
Mireia Bertos
Claudio Fuentes-Grünewald
Elisabet Alacid
Rosa Figueroa
Berta Renom
Esther Garcés
Claudio Fuentes Grunewald
format Journal article
container_title Harmful Algae
container_volume 10
container_issue 6
container_start_page 654
publishDate 2011
institution Swansea University
issn 15689883
doi_str_mv 10.1016/j.hal.2011.05.001
publisher Elsevier
college_str Faculty of Science and Engineering
hierarchytype
hierarchy_top_id facultyofscienceandengineering
hierarchy_top_title Faculty of Science and Engineering
hierarchy_parent_id facultyofscienceandengineering
hierarchy_parent_title Faculty of Science and Engineering
department_str School of Biosciences, Geography and Physics - Biosciences{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Biosciences, Geography and Physics - Biosciences
document_store_str 0
active_str 0
description We isolated eleven strains of the harmful algal bloom (HAB)-forming dinoflagellate Karlodinium veneficum during a bloom event in the NW Mediterranean coastal waters and we studied the inter-strain variability in several of their physiological and biochemical traits. These included autotrophic growth parameters, feeding capabilities (mixotrophy), lipid composition, and, in some cases, their responses to biotic and abiotic factors. The strains were found to differ in their growth rates (0.27–0.53 d−1) and in the maximum cell concentrations achieved during stationary phase (6.1 × 104–8.6 × 104 cells mL−1). Their ingestion performance, when offered Rhodomonas salina as prey, was also diverse (0.22–1.3 cells per K. veneficum per day; 8–52% of their daily ration). At least two strains survived for several months under strict heterotrophic conditions (no light, low inorganic nutrients availability, and R. salina as food source). These strains also showed very distinct fatty acid compositions, with very low contents of monounsaturated and polyunsaturated fatty acids. According to a Bray Curtis similarity analysis, three or four strain groups able to perform different roles in bloom development were identified. We further analyzed one strain from each of the two most distinct groups with respect to prey concentration, light intensity, nutrient availability, and we determined the functional responses (growth and feeding rates) to food concentration. Taken together, the results served to highlight the role of mixotrophy and clone variability in the formation of HABs.
published_date 2011-05-13T04:00:57Z
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score 11.012678

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