Shallow-emerged coral may warn of deep-sea coral response to thermal stress

Abstract In the Gulf of Alaska, commercially harvested fish species utilize habitats dominated by red tree corals (Primnoa pacifica) for shelter, feeding, and nurseries, but recent studies hint that environmental conditions may be interrupting the reproductive lifecycle of the corals. The North Paci...

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Autores principales:	Julia W. Johnstone, Rhian G. Waller, Robert P. Stone
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/fb859f61adc4459db96d240bc901f593
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id	oai:doaj.org-article:fb859f61adc4459db96d240bc901f593
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spelling	oai:doaj.org-article:fb859f61adc4459db96d240bc901f5932021-11-21T12:24:54ZShallow-emerged coral may warn of deep-sea coral response to thermal stress10.1038/s41598-021-01948-22045-2322https://doaj.org/article/fb859f61adc4459db96d240bc901f5932021-11-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-01948-2https://doaj.org/toc/2045-2322Abstract In the Gulf of Alaska, commercially harvested fish species utilize habitats dominated by red tree corals (Primnoa pacifica) for shelter, feeding, and nurseries, but recent studies hint that environmental conditions may be interrupting the reproductive lifecycle of the corals. The North Pacific has experienced persistent and extreme thermal variability in recent years and this pattern is predicted to continue in coming decades. Recent discovery of deep-water emerged coral populations in Southeast Alaska fjords provided opportunity for detailed life-history studies and comparison to corals in managed habitats on the continental shelf. Here we show that sperm from deep colonies develops completely, but in shallow colonies, sperm development is prematurely halted, likely preventing successful production of larvae. We hypothesize that the divergence is due to differing temperature regimes presently experienced by the corals. Compared to deep populations below the thermocline, shallow populations experience much greater seasonal thermal variability and annual pulses of suspected near-lethal temperatures that appear to interrupt the production of viable gametes. The unique opportunity to comprehensively study emerged populations presently affected by thermal stress provides advance warning of the possible fate of deep corals in the Gulf of Alaska that will soon experience similar ocean conditions.Julia W. JohnstoneRhian G. WallerRobert P. StoneNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-10 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Julia W. Johnstone Rhian G. Waller Robert P. Stone Shallow-emerged coral may warn of deep-sea coral response to thermal stress
description	Abstract In the Gulf of Alaska, commercially harvested fish species utilize habitats dominated by red tree corals (Primnoa pacifica) for shelter, feeding, and nurseries, but recent studies hint that environmental conditions may be interrupting the reproductive lifecycle of the corals. The North Pacific has experienced persistent and extreme thermal variability in recent years and this pattern is predicted to continue in coming decades. Recent discovery of deep-water emerged coral populations in Southeast Alaska fjords provided opportunity for detailed life-history studies and comparison to corals in managed habitats on the continental shelf. Here we show that sperm from deep colonies develops completely, but in shallow colonies, sperm development is prematurely halted, likely preventing successful production of larvae. We hypothesize that the divergence is due to differing temperature regimes presently experienced by the corals. Compared to deep populations below the thermocline, shallow populations experience much greater seasonal thermal variability and annual pulses of suspected near-lethal temperatures that appear to interrupt the production of viable gametes. The unique opportunity to comprehensively study emerged populations presently affected by thermal stress provides advance warning of the possible fate of deep corals in the Gulf of Alaska that will soon experience similar ocean conditions.
format	article
author	Julia W. Johnstone Rhian G. Waller Robert P. Stone
author_facet	Julia W. Johnstone Rhian G. Waller Robert P. Stone
author_sort	Julia W. Johnstone
title	Shallow-emerged coral may warn of deep-sea coral response to thermal stress
title_short	Shallow-emerged coral may warn of deep-sea coral response to thermal stress
title_full	Shallow-emerged coral may warn of deep-sea coral response to thermal stress
title_fullStr	Shallow-emerged coral may warn of deep-sea coral response to thermal stress
title_full_unstemmed	Shallow-emerged coral may warn of deep-sea coral response to thermal stress
title_sort	shallow-emerged coral may warn of deep-sea coral response to thermal stress
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/fb859f61adc4459db96d240bc901f593
work_keys_str_mv	AT juliawjohnstone shallowemergedcoralmaywarnofdeepseacoralresponsetothermalstress AT rhiangwaller shallowemergedcoralmaywarnofdeepseacoralresponsetothermalstress AT robertpstone shallowemergedcoralmaywarnofdeepseacoralresponsetothermalstress
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Shallow-emerged coral may warn of deep-sea coral response to thermal stress

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