Effects of irradiance and light spectrum on growth of the scleractinian coral Galaxea
Due to global degradation of coral reefs and high demand for scleractinian corals, aquaculture of these marine organisms is gaining importance. To make coral aquaculture economically viable, optimisation of culture protocols is vital. We determined the effects of irradiance and light spectrum on the...
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ftunivwagenin:oai:library.wur.nl:wurpubs/434236 2024-02-04T10:03:38+01:00 Effects of irradiance and light spectrum on growth of the scleractinian coral Galaxea Wijgerde, T.H.M. Henkemans, P. Osinga, R. 2012 application/pdf https://research.wur.nl/en/publications/effects-of-irradiance-and-light-spectrum-on-growth-of-the-sclerac https://doi.org/10.1016/j.aquaculture.2012.03.025 en eng https://edepot.wur.nl/245668 https://research.wur.nl/en/publications/effects-of-irradiance-and-light-spectrum-on-growth-of-the-sclerac doi:10.1016/j.aquaculture.2012.03.025 info:eu-repo/semantics/restrictedAccess Wageningen University & Research Aquaculture 344-349 (2012) ISSN: 0044-8486 calcification carbonate-ion concentration climate-change enrichment ocean acidification photosynthesis skeletal growth stylophora-pistillata temperature zooxanthellae info:eu-repo/semantics/article Article/Letter to editor info:eu-repo/semantics/publishedVersion 2012 ftunivwagenin https://doi.org/10.1016/j.aquaculture.2012.03.025 2024-01-10T23:21:17Z Due to global degradation of coral reefs and high demand for scleractinian corals, aquaculture of these marine organisms is gaining importance. To make coral aquaculture economically viable, optimisation of culture protocols is vital. We determined the effects of irradiance and light spectrum on the growth of a model scleractinian coral species, Galaxea fascicularis (Linnaeus 1767). Single polyps (n=10) were cultured under six different treatments; LED (light emitting diode) at a PPFD of 40-60, 125-150 and 275-325 mu mol m(-2) s(-1); and LEP (light emitting plasma) at a PPFD of 40-60, 125-150 and 275-325 mu mol m (2) s (1). Specific growth and survival rates were monitored over a 69-day interval. Mean specific growth rates were 0.031 +/- 0.006 day(-1) for the LED 40-60 treatment, 0.030 +/- 0.007 day(-1) for LED 125-150, 0.022 +/- 0.009 day(-1) for LED 275-325, 0.024 +/- 0.011 day(-1) for LEP 40-60, 0.040 +/- 0.008 day(-1) for LEP 125-150, and 0.031 +/- 0.006 day(-1) for LEP 275-325. Coral survival rate at the end of the growth interval was 95%. A significant main effect of irradiance on coral specific growth rate was found (factorial ANOVA, P=0.018), whereas spectrum did not show a significant main effect (factorial ANOVA, P=0.085). A significant interactive effect between irradiance and spectrum was found (factorial ANOVA, P=0.013), as LEP lighting resulted in higher coral growth rates at the two higher irradiance levels applied. The effect of irradiance and its interaction with spectrum were likely modulated by water flow rates. Our results show that balanced as well as light sources skewed towards the blue part of the spectrum result in high coral growth. Specifically, LEP and LED have shown to be suitable lighting technologies for coral aquaculture, where LEP yields higher G. fascicularis growth rates at higher irradiance levels. (c) 2012 Elsevier B.V. All rights reserved. Article in Journal/Newspaper Ocean acidification Wageningen UR (University & Research Centre): Digital Library Aquaculture 344-349 188 193 |
institution |
Open Polar |
collection |
Wageningen UR (University & Research Centre): Digital Library |
op_collection_id |
ftunivwagenin |
language |
English |
topic |
calcification carbonate-ion concentration climate-change enrichment ocean acidification photosynthesis skeletal growth stylophora-pistillata temperature zooxanthellae |
spellingShingle |
calcification carbonate-ion concentration climate-change enrichment ocean acidification photosynthesis skeletal growth stylophora-pistillata temperature zooxanthellae Wijgerde, T.H.M. Henkemans, P. Osinga, R. Effects of irradiance and light spectrum on growth of the scleractinian coral Galaxea |
topic_facet |
calcification carbonate-ion concentration climate-change enrichment ocean acidification photosynthesis skeletal growth stylophora-pistillata temperature zooxanthellae |
description |
Due to global degradation of coral reefs and high demand for scleractinian corals, aquaculture of these marine organisms is gaining importance. To make coral aquaculture economically viable, optimisation of culture protocols is vital. We determined the effects of irradiance and light spectrum on the growth of a model scleractinian coral species, Galaxea fascicularis (Linnaeus 1767). Single polyps (n=10) were cultured under six different treatments; LED (light emitting diode) at a PPFD of 40-60, 125-150 and 275-325 mu mol m(-2) s(-1); and LEP (light emitting plasma) at a PPFD of 40-60, 125-150 and 275-325 mu mol m (2) s (1). Specific growth and survival rates were monitored over a 69-day interval. Mean specific growth rates were 0.031 +/- 0.006 day(-1) for the LED 40-60 treatment, 0.030 +/- 0.007 day(-1) for LED 125-150, 0.022 +/- 0.009 day(-1) for LED 275-325, 0.024 +/- 0.011 day(-1) for LEP 40-60, 0.040 +/- 0.008 day(-1) for LEP 125-150, and 0.031 +/- 0.006 day(-1) for LEP 275-325. Coral survival rate at the end of the growth interval was 95%. A significant main effect of irradiance on coral specific growth rate was found (factorial ANOVA, P=0.018), whereas spectrum did not show a significant main effect (factorial ANOVA, P=0.085). A significant interactive effect between irradiance and spectrum was found (factorial ANOVA, P=0.013), as LEP lighting resulted in higher coral growth rates at the two higher irradiance levels applied. The effect of irradiance and its interaction with spectrum were likely modulated by water flow rates. Our results show that balanced as well as light sources skewed towards the blue part of the spectrum result in high coral growth. Specifically, LEP and LED have shown to be suitable lighting technologies for coral aquaculture, where LEP yields higher G. fascicularis growth rates at higher irradiance levels. (c) 2012 Elsevier B.V. All rights reserved. |
format |
Article in Journal/Newspaper |
author |
Wijgerde, T.H.M. Henkemans, P. Osinga, R. |
author_facet |
Wijgerde, T.H.M. Henkemans, P. Osinga, R. |
author_sort |
Wijgerde, T.H.M. |
title |
Effects of irradiance and light spectrum on growth of the scleractinian coral Galaxea |
title_short |
Effects of irradiance and light spectrum on growth of the scleractinian coral Galaxea |
title_full |
Effects of irradiance and light spectrum on growth of the scleractinian coral Galaxea |
title_fullStr |
Effects of irradiance and light spectrum on growth of the scleractinian coral Galaxea |
title_full_unstemmed |
Effects of irradiance and light spectrum on growth of the scleractinian coral Galaxea |
title_sort |
effects of irradiance and light spectrum on growth of the scleractinian coral galaxea |
publishDate |
2012 |
url |
https://research.wur.nl/en/publications/effects-of-irradiance-and-light-spectrum-on-growth-of-the-sclerac https://doi.org/10.1016/j.aquaculture.2012.03.025 |
genre |
Ocean acidification |
genre_facet |
Ocean acidification |
op_source |
Aquaculture 344-349 (2012) ISSN: 0044-8486 |
op_relation |
https://edepot.wur.nl/245668 https://research.wur.nl/en/publications/effects-of-irradiance-and-light-spectrum-on-growth-of-the-sclerac doi:10.1016/j.aquaculture.2012.03.025 |
op_rights |
info:eu-repo/semantics/restrictedAccess Wageningen University & Research |
op_doi |
https://doi.org/10.1016/j.aquaculture.2012.03.025 |
container_title |
Aquaculture |
container_volume |
344-349 |
container_start_page |
188 |
op_container_end_page |
193 |
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1789971145341009920 |