Feeding and thermal conditioning enhance coral temperature tolerance in juvenile<i>Pocillopora acuta</i>

Huffmyer, Ariana S.; Johnson, Colton; Epps, Ashleigh M.; Lemus, Judith D.; Gates, Ruth D.

doi:10.1098/rsos.210644

Cited by 16 publications

(8 citation statements)

References 86 publications

(131 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…These concentrations coupled together would have increased coral heterotrophic rates and helped recruits to cope with the extreme conditions (Anthony, 2006;Houlbrèque and Ferrier-Pagès, 2009;Ragazzola et al, 2013;Goldberg, 2018). Increasing the energy budget through heterotrophic nutrition could enhance juvenile growth and facilitate coral recruitment under high temperatures (Huffmyer et al, 2021). This energy budget enhancement could also benefit coral larvae under deoxygenation which has recently been shown to increase the coral larvae energy needs at a dissolved oxygen concentration of around 2 mg L -1 (Alderdice et al, 2021).…”

Section: Shift Between Cca and Turf Algaementioning

confidence: 99%

High Coral Recruitment Despite Coralline Algal Loss Under Extreme Environmental Conditions

et al. 2022

View full text Add to dashboard Cite

The crucial role of crustose coralline algae (CCA) in inducing hard coral larval settlement and ensuring the replenishment of coral reefs is widely accepted, and so are the negative effects of anthropogenic CO2 emissions on both CCA abundance and coral development. However, diversified and well-developed coral reef communities have been recently discovered in natural conditions where CCA and corals would not be expected to thrive. Back-reef pools, volcanic CO2 vents, mangrove estuaries, and semi-enclosed lagoons systems can present seawater pH, temperature, and dissolved oxygen values reaching or even exceeding the conditions currently predicted by the Inter Panel on Climate Change (IPCC) for 2100. In the semi-enclosed lagoon of Bouraké (New Caledonia, southwest Pacific Ocean), seawater pHT, dissolved oxygen, and temperatures regularly fluctuate with the tide reaching respectively minimum values of 7.23 pHT units, 2.28 mg O2 L-1, and maximum of 33.85°C. This study reports the effect of such extreme environmental conditions on hard coral recruitment and CCA originally settled at a forereef on artificial substrates that were transplanted over two years in two fringing reef and at the Bouraké lagoon. Our data emphasize the negative effects of the extreme conditions in our study sites on the CCA, which decreased in cover by ca. 80% and lost in the competition with turf algae, which, in turn, increased up to 162% at the end of the two years. Conversely, hard coral recruitment remained high at Bouraké throughout the study, three-fold higher than at two sites located outside Bouraké where environmental conditions were typical for coastal fringing reefs. Our findings show that while such extreme, climate change like-conditions have a direct and adverse effect on CCA abundance, and despite a certain persistence, coral larvae settlement was not affected. Based on previous findings from Bouraké, and the present observations, both coral recruits and adults seem to be unaffected despite the extreme environmental conditions. This study supports previous research illustrating how extreme natural and variable environments may reveal unexpected and positive insights on the processes underlying coral acclimatization and adaptation to global change.

show abstract

Section: Shift Between Cca and Turf Algaementioning

confidence: 99%

High Coral Recruitment Despite Coralline Algal Loss Under Extreme Environmental Conditions

et al. 2022

View full text Add to dashboard Cite

show abstract

“…Laser scanner confocal microscopy (LSCM) can visualise coral auto-fluorescent proteins as well as coral algal symbionts, allowing for a non-invasive assessment of both coral tissue and symbiont health 23 . Samples were scanned and imaged using Zeiss LSCM 710 and Zen Black processing software (2011 v14.0.16.201).…”

Section: Methodsmentioning

confidence: 99%

“…The copyright holder for this preprint this version posted March 19, 2023. ; https://doi.org/10.1101/2023.03. 16.533048 doi: bioRxiv preprint symbiont health 23 . Samples were scanned and imaged using Zeiss LSCM 710 and Zen Black processing software (2011 v14.0.16.201).…”

Section: Vitrification and Laser Nanowarmingmentioning

confidence: 99%

The first proof of concept demonstration of nanowarming in coral tissue

Daly

Bouwmeester

Perry

et al. 2023

Preprint

View full text Add to dashboard Cite

Climate change is causing ocean acidification and warming, resulting in mass bleaching and death of corals globally. Cryopreservation and biobanking to secure the genetics of threatened populations is currently limited to coral sperm and larvae, which are only available during brief annual spawning events and are impacted by ocean warming, so there is an urgent need for methods to enable biobanking activities year-round. Here, we used vitrification and nanowarming to successfully recover adult coral tissues in a novel sample type, the single-polyp microfragment (SPMF). Fluorescence and confocal microscopy showed clearly defined tissues and green fluorescent protein fluorescence around the polyp mouth post-warming in 43.3% of SPMFs at 24 hours post-warming, and 30.0% at one month. These advances provide a basis for continued research and development of a field-ready protocol for cryopreservation of adult coral tissues, to permit biobanking of threatened coral species throughout the year and support reef restoration efforts.

show abstract

“…Laser scanning confocal microscopy (LSCM) can visualize coral auto‐fluorescent proteins as well as coral algal symbionts, allowing for a non‐invasive assessment of both coral tissue and symbiont health. [ 25 ] Samples were scanned and imaged using Zeiss LSCM 710 and Zen Black processing software (2011 v14.0.16.201). Excitation wavelength of 405 nm with a Diode laser (UV) allowed for visualization of coral auto‐fluorescent proteins and algal symbiont fluorescence at a magnification of 10×.…”

Section: Methodsmentioning

confidence: 99%

The First Proof of Concept Demonstration of Nanowarming in Coral Tissues

Daly

Bouwmeester

Perry

et al. 2023

Advanced Sustainable Systems

View full text Add to dashboard Cite

Coral reefs are threatened by anthropogenic climate change, which causes ocean acidification and warming that can result in coral death and the loss of genetic diversity on reefs around the world. Global efforts to secure the genetics of threatened populations using cryopreservation and biobanking are underway but are limited to coral sperm and larvae, available only during brief annual spawning events. Methods to cryopreserve adult coral tissues to enable biobanking activities year‐round are urgently needed, but are challenging due to the presence of a calcium carbonate skeleton and algal symbionts within the tissues, and chill sensitivity. In this study, vitrification and laser nanowarming permitted successful recovery of adult coral tissues in a novel sample type, the single‐polyp microfragment. Fluorescence and confocal microscopy shows clearly defined green fluorescent protein auto‐fluorescence around the polyp mouth post‐warming, with an overall survival rate of 39.7 ± 7.4% at 24 h post‐warming and 23.3 ± 9.7% at 1 month, but relatively few algal symbionts are present in the tissues, indicating poor survival of these cells. These proof‐of‐concept results provide a basis for continued research and development of a field‐ready protocol for cryopreservation of adult coral tissues, which will be essential to prevent extinctions and support reef restoration.

show abstract

Feeding and thermal conditioning enhance coral temperature tolerance in juvenilePocillopora acuta

Cited by 16 publications

References 86 publications

High Coral Recruitment Despite Coralline Algal Loss Under Extreme Environmental Conditions

High Coral Recruitment Despite Coralline Algal Loss Under Extreme Environmental Conditions

The first proof of concept demonstration of nanowarming in coral tissue

The First Proof of Concept Demonstration of Nanowarming in Coral Tissues

Contact Info

Product

Resources

About