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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Online Access: | https://doi.org/10.1016/j.aaf.2019.02.008 https://doaj.org/article/c149d6a9b9424385babd0b4d98186d41 |
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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 |
container_volume |
4 |
container_issue |
4 |
container_start_page |
142 |
op_container_end_page |
148 |
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