Improving light and CO<inf>2</inf> availability to enhance the growth rate of the diatom, Chaetoceros muelleri

Iwasaki, K; Evenhuis, C; Tamburic, B; Kuzhiumparambil, U; O'Connor, W; Ralph, P; Szabó, M

Improving light and CO<inf>2</inf> availability to enhance the growth rate of the diatom, Chaetoceros muelleri

Iwasaki, K Evenhuis, C

Tamburic, B Kuzhiumparambil, U

O'Connor, W Ralph, P

Szabó, M

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Publisher:: ELSEVIER
Publication Type:: Journal Article
Citation:: Algal Research, 2021, 55
Issue Date:: 2021-05-01

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Field	Value	Language
dc.contributor.author	Iwasaki, K
dc.contributor.author	Evenhuis, C https://orcid.org/0000-0001-9903-7716
dc.contributor.author	Tamburic, B
dc.contributor.author	Kuzhiumparambil, U https://orcid.org/0000-0003-0582-6779
dc.contributor.author	O'Connor, W
dc.contributor.author	Ralph, P https://orcid.org/0000-0002-3103-7346
dc.contributor.author	Szabó, M
dc.date.accessioned	2022-01-05T06:42:30Z
dc.date.available	2022-01-05T06:42:30Z
dc.date.issued	2021-05-01
dc.identifier.citation	Algal Research, 2021, 55
dc.identifier.issn	2211-9264
dc.identifier.uri	http://hdl.handle.net/10453/152707
dc.description.abstract	Diatoms (Bacillariophyceae) are an important source of feed for juvenile animals in aquaculture hatcheries. Increasing the yield of feed cultures by optimizing illumination and inorganic carbon supply could significantly reduce operational costs for hatcheries. In this study, the growth dynamics and photosynthetic efficiency of the aquaculture-relevant diatom Chaetoceros muelleri were monitored and modelled under four different light and CO2 conditions. By increasing the availability of both light and CO2, a growth rate of 1.59 ± 0.12 (day−1) was achieved for C. muelleri, an increase of approximately 89% compared to 0.84 ± 0.08 (day−1) which was recorded in cultures under light limitation with no CO2 addition. The real-time monitoring and modelling of growth dynamics and photosynthesis rates in different light and CO2 conditions have demonstrated that light availability can be improved by minimizing the path length of light through the culture, and the importance of on-demand CO2 supply. The techniques and results outlined in this study could be used to potentially improve biomass production in hatcheries.
dc.language	English
dc.publisher	ELSEVIER
dc.relation.ispartof	Algal Research
dc.relation.isbasedon	10.1016/j.algal.2021.102234
dc.rights	info:eu-repo/semantics/closedAccess
dc.subject	0607 Plant Biology, 0904 Chemical Engineering, 1003 Industrial Biotechnology
dc.title	Improving light and CO<inf>2</inf> availability to enhance the growth rate of the diatom, Chaetoceros muelleri
dc.type	Journal Article
utslib.citation.volume	55
utslib.for	0607 Plant Biology
utslib.for	0904 Chemical Engineering
utslib.for	1003 Industrial Biotechnology
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Science
pubs.organisational-group	/University of Technology Sydney/Strength - C3 - Climate Change Cluster
pubs.organisational-group	/University of Technology Sydney/Strength - ithree - Institute of Infection, Immunity and Innovation
utslib.copyright.status	closed_access	*
dc.date.updated	2022-01-05T06:42:17Z
pubs.publication-status	Published
pubs.volume	55

Abstract:

Diatoms (Bacillariophyceae) are an important source of feed for juvenile animals in aquaculture hatcheries. Increasing the yield of feed cultures by optimizing illumination and inorganic carbon supply could significantly reduce operational costs for hatcheries. In this study, the growth dynamics and photosynthetic efficiency of the aquaculture-relevant diatom Chaetoceros muelleri were monitored and modelled under four different light and CO2 conditions. By increasing the availability of both light and CO2, a growth rate of 1.59 ± 0.12 (day−1) was achieved for C. muelleri, an increase of approximately 89% compared to 0.84 ± 0.08 (day−1) which was recorded in cultures under light limitation with no CO2 addition. The real-time monitoring and modelling of growth dynamics and photosynthesis rates in different light and CO2 conditions have demonstrated that light availability can be improved by minimizing the path length of light through the culture, and the importance of on-demand CO2 supply. The techniques and results outlined in this study could be used to potentially improve biomass production in hatcheries.

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http://hdl.handle.net/10453/152707