Interactive effects of chronic ocean acidification and warming on the growth, survival, and physiological responses of adults of the temperate sea urchin Strongylocentrotusintermedius.

Cui, D ; Zou, W ; et al.

In: Chemosphere, Jg. 356 (2024-05-01), S. 141907

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To investigate the interactive effects of chronic ocean acidification and warming (OAW) on the growth, survival, and physiological responses of sea urchins, adults of the temperate sea urchin Strongylocentrotus intermedius were incubated separately/jointly in acidic (ΔpH NBS = -0.5 units) and thermal (ΔT = +3.0 °C) seawater for 120 days under lab-controlled conditions based on the projected ocean pH and temperature for 2100 put forward by the Intergovernmental Panel on Climate Change (IPCC). Survival rate (SR), average food consumption rate (FCR), gut index (GuI), specific growth rate (SGR), digestive capability, energy production, and antioxidant capability were subsequently determined. The results showed that 1) the SR, FCR, GuI and SGR decreased sharply under OAW conditions. Significant interactive effects of OAW on SR and SGR were observed at 120 days post-incubation (dpi), and on FCR this occurred at 90 dpi. 2) OAW altered the activities of both digestive and antioxidant enzymes. There were significant interaction effects of OAW on the activities of amylase, trehalase, and superoxide dismutase. 3) The relative gene expression levels and activities of key enzymes involved in glycometabolism pathways (i.e., glycolysis and the tricarboxylic acid cycle) were significantly affected by OAW, resulting in an alteration of the total ATP content in the sea urchins. Interaction effects of OAW were observed in both relative gene expression and the activity of enzymes involved in glycolysis (hexokinase), the transformation of glycolysis end-products (lactate dehydrogenase), the tricarboxylic acid cycle (citrate synthetase), and ATP production (Na + /K + -ATPase). The data from this study will enrich our knowledge concerning the combined effects of global climate change on the survival, growth, and physiological responses of echinoderms.

Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.

Titel:	Interactive effects of chronic ocean acidification and warming on the growth, survival, and physiological responses of adults of the temperate sea urchin Strongylocentrotusintermedius.
Autor/in / Beteiligte Person:	Cui, D ; Zou, W ; Wu, B ; Jiao, R ; Zhang, S ; Zhao, T ; Zhan, Y ; Chang, Y
Link:	Zum Volltext
Zeitschrift:	Chemosphere, Jg. 356 (2024-05-01), S. 141907
Veröffentlichung:	Oxford : Elsevier Science Ltd ; <i>Original Publication</i>: Oxford, New York, : Pergamon Press., 2024
Medientyp:	academicJournal
ISSN:	1879-1298 (electronic)
DOI:	10.1016/j.chemosphere.2024.141907
Schlagwort:	Animals Hydrogen-Ion Concentration Oceans and Seas Temperature Strongylocentrotus physiology Strongylocentrotus drug effects Sea Urchins physiology Ocean Acidification Seawater chemistry Climate Change
Sonstiges:	Nachgewiesen in: MEDLINE Sprachen: English Publication Type: Journal Article Language: English [Chemosphere] 2024 May; Vol. 356, pp. 141907. <i>Date of Electronic Publication: </i>2024 Apr 06. MeSH Terms: Seawater* / chemistry ; Climate Change* ; Animals ; Hydrogen-Ion Concentration ; Oceans and Seas ; Temperature ; Strongylocentrotus / physiology ; Strongylocentrotus / drug effects ; Sea Urchins / physiology ; Ocean Acidification Contributed Indexing: Keywords: ATP production; Antioxidant capability; Metabolic progress; Ocean acidification and warming; Strongylocentrotus intermedius Entry Date(s): Date Created: 20240408 Date Completed: 20240430 Latest Revision: 20240430 Update Code: 20240501

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