Increased pCO2 changes the lipid production in important aquacultural feedstock algae Isochrysis galbana, but not in Tetraselmis suecica

Increased anthropogenic CO2 emissions are leading to an increase in CO2 uptake by the world's oceans and seas, resulting in ocean acidification with a decrease in global ocean water pH by as much as 0.3–0.4 units by the year 2100. The direct effects of changing pCO2 on important microalgal feed...

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Published in:Aquaculture and Fisheries
Main Authors: Susan C. Fitzer, Julien Plancq, Cameron J. Floyd, Faith M. Kemp, Jaime L. Toney
Format: Article in Journal/Newspaper
Language:English
Published: KeAi Communications Co., Ltd. 2019
Subjects:
Online Access:https://doi.org/10.1016/j.aaf.2019.02.008
https://doaj.org/article/c149d6a9b9424385babd0b4d98186d41
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spelling ftdoajarticles:oai:doaj.org/article:c149d6a9b9424385babd0b4d98186d41 2023-05-15T17:49:51+02:00 Increased pCO2 changes the lipid production in important aquacultural feedstock algae Isochrysis galbana, but not in Tetraselmis suecica Susan C. Fitzer Julien Plancq Cameron J. Floyd Faith M. Kemp Jaime L. Toney 2019-07-01T00:00:00Z https://doi.org/10.1016/j.aaf.2019.02.008 https://doaj.org/article/c149d6a9b9424385babd0b4d98186d41 EN eng KeAi Communications Co., Ltd. http://www.sciencedirect.com/science/article/pii/S2468550X18302211 https://doaj.org/toc/2468-550X 2468-550X doi:10.1016/j.aaf.2019.02.008 https://doaj.org/article/c149d6a9b9424385babd0b4d98186d41 Aquaculture and Fisheries, Vol 4, Iss 4, Pp 142-148 (2019) Aquaculture. Fisheries. Angling SH1-691 article 2019 ftdoajarticles https://doi.org/10.1016/j.aaf.2019.02.008 2022-12-31T12:57:17Z Increased anthropogenic CO2 emissions are leading to an increase in CO2 uptake by the world's oceans and seas, resulting in ocean acidification with a decrease in global ocean water pH by as much as 0.3–0.4 units by the year 2100. The direct effects of changing pCO2 on important microalgal feedstocks are not as well understood. Few studies have focused on lipid composition changes in specific algal species in response to ocean acidification and yet microalgae are an indispensable food source for various marine species, including juvenile shellfish. Isochrysis galbana and Tetraselmis suecica are widely used in aquaculture as feeds for mussels and other shellfish. The total lipid contents and concentrations of I. galbana and T. suecica were investigated when grown under present day (400 ppm) and ocean acidification conditions (1000 ppm) to elucidate the impact of increasing pCO2 on an important algae feedstock. Total lipids, long-chain alkenones (LCAs) and alkenoates decreased at 1000 ppm in I. galbana. I. galbana produces higher lipids than T. suecica, and is perhaps as a result more impacted by the change in carbon available for lipid production under higher pCO2. I. galbana is an important feedstock, more easily assimilated for growth in juvenile shellfish and reductions in lipid composition may prove problematic for the growth of future shellfish aquaculture. Our findings suggest that higher pCO2 impacts on algal lipid growth are species specific and warrant further study. It is therefore vital to examine the impact of high CO2 on algal lipid production, especially those commercial shellfish feed varieties to predict future impacts on commercial aquaculture. Keywords: Ocean acidification, Algae, Lipids, Aquaculture, Feedstock Article in Journal/Newspaper Ocean acidification Directory of Open Access Journals: DOAJ Articles Aquaculture and Fisheries 4 4 142 148
institution Open Polar
collection Directory of Open Access Journals: DOAJ Articles
op_collection_id ftdoajarticles
language English
topic Aquaculture. Fisheries. Angling
SH1-691
spellingShingle Aquaculture. Fisheries. Angling
SH1-691
Susan C. Fitzer
Julien Plancq
Cameron J. Floyd
Faith M. Kemp
Jaime L. Toney
Increased pCO2 changes the lipid production in important aquacultural feedstock algae Isochrysis galbana, but not in Tetraselmis suecica
topic_facet Aquaculture. Fisheries. Angling
SH1-691
description Increased anthropogenic CO2 emissions are leading to an increase in CO2 uptake by the world's oceans and seas, resulting in ocean acidification with a decrease in global ocean water pH by as much as 0.3–0.4 units by the year 2100. The direct effects of changing pCO2 on important microalgal feedstocks are not as well understood. Few studies have focused on lipid composition changes in specific algal species in response to ocean acidification and yet microalgae are an indispensable food source for various marine species, including juvenile shellfish. Isochrysis galbana and Tetraselmis suecica are widely used in aquaculture as feeds for mussels and other shellfish. The total lipid contents and concentrations of I. galbana and T. suecica were investigated when grown under present day (400 ppm) and ocean acidification conditions (1000 ppm) to elucidate the impact of increasing pCO2 on an important algae feedstock. Total lipids, long-chain alkenones (LCAs) and alkenoates decreased at 1000 ppm in I. galbana. I. galbana produces higher lipids than T. suecica, and is perhaps as a result more impacted by the change in carbon available for lipid production under higher pCO2. I. galbana is an important feedstock, more easily assimilated for growth in juvenile shellfish and reductions in lipid composition may prove problematic for the growth of future shellfish aquaculture. Our findings suggest that higher pCO2 impacts on algal lipid growth are species specific and warrant further study. It is therefore vital to examine the impact of high CO2 on algal lipid production, especially those commercial shellfish feed varieties to predict future impacts on commercial aquaculture. Keywords: Ocean acidification, Algae, Lipids, Aquaculture, Feedstock
format Article in Journal/Newspaper
author Susan C. Fitzer
Julien Plancq
Cameron J. Floyd
Faith M. Kemp
Jaime L. Toney
author_facet Susan C. Fitzer
Julien Plancq
Cameron J. Floyd
Faith M. Kemp
Jaime L. Toney
author_sort Susan C. Fitzer
title Increased pCO2 changes the lipid production in important aquacultural feedstock algae Isochrysis galbana, but not in Tetraselmis suecica
title_short Increased pCO2 changes the lipid production in important aquacultural feedstock algae Isochrysis galbana, but not in Tetraselmis suecica
title_full Increased pCO2 changes the lipid production in important aquacultural feedstock algae Isochrysis galbana, but not in Tetraselmis suecica
title_fullStr Increased pCO2 changes the lipid production in important aquacultural feedstock algae Isochrysis galbana, but not in Tetraselmis suecica
title_full_unstemmed Increased pCO2 changes the lipid production in important aquacultural feedstock algae Isochrysis galbana, but not in Tetraselmis suecica
title_sort increased pco2 changes the lipid production in important aquacultural feedstock algae isochrysis galbana, but not in tetraselmis suecica
publisher KeAi Communications Co., Ltd.
publishDate 2019
url https://doi.org/10.1016/j.aaf.2019.02.008
https://doaj.org/article/c149d6a9b9424385babd0b4d98186d41
genre Ocean acidification
genre_facet Ocean acidification
op_source Aquaculture and Fisheries, Vol 4, Iss 4, Pp 142-148 (2019)
op_relation http://www.sciencedirect.com/science/article/pii/S2468550X18302211
https://doaj.org/toc/2468-550X
2468-550X
doi:10.1016/j.aaf.2019.02.008
https://doaj.org/article/c149d6a9b9424385babd0b4d98186d41
op_doi https://doi.org/10.1016/j.aaf.2019.02.008
container_title Aquaculture and Fisheries
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