Citation:

j.cbpa.2014.04.011

Name: Euechinoidea and Cidaroidea respond differently to ocean acidification
Published: 2014-09-15
License: https://creativecommons.org/licenses/by/3.0/
Keywords: Acid-base regulation; Animalia; Behaviour; Benthic animals; Benthos; Coast and continental shelf; Containers and aquaria (20-1000 L or < 1 m**2); Echinodermata; Eucidaris tribuloides; Laboratory experiment; North Atlantic; Paracentrotus lividus; Single species; Tripneustes ventricosus; Tropical

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Abstract:

The impact of the chemical changes in the ocean waters due to the increasing atmospheric CO2 depends on the ability of an organism to control extracellular pH. Among sea urchins, this seems specific to the Euechinoidea, sea urchins except Cidaroidea. However, Cidaroidea survived two ocean acidification periods: the Permian-Trias and the Cretaceous-Tertiary crises. We investigated the response of these two sea urchin groups to reduced seawater pH with the tropical cidaroid Eucidaris tribuloides, the sympatric euechinoid Tripneustes ventricosus and the temperate euechinoid Paracentrotus lividus. Both euechinoid showed a compensation of the coelomic fluid pH due to increased buffer capacity. This was linked to an increased concentration of DIC in the coelomic fluid and thus of bicarbonate ions (most probably originating from the surrounding seawater as isotopic signature of the carbon -delta 13C- was similar). On the other hand, the cidaroid showed no changes within the coelomic fluid. Moreover, the delta 13C of the coelomic fluid did not match that of the seawater and was not significantly different between the urchins from the different treatments. Feeding rate was not affected in any species. While euechinoids are able to regulate their extracellular acid-base balance, many questions are still unanswered on the costs of this capacity. On the contrary, cidaroids do not seem affected by a reduced seawater pH. Further investigations need to be undertaken to cover more species and physiological and metabolic parameters in order to determine if energy trade-offs occur and how this mechanism of compensation is distributed among sea urchins.

Keyword(s):

Acid-base regulation; Animalia; Behaviour; Benthic animals; Benthos; Coast and continental shelf; Containers and aquaria (20-1000 L or < 1 m**2); Echinodermata; Eucidaris tribuloides; Laboratory experiment; North Atlantic; Paracentrotus lividus; Single species; Tripneustes ventricosus; Tropical

Further details:

Lavigne, Héloïse; Epitalon, Jean-Marie; Gattuso, Jean-Pierre (2014): seacarb: seawater carbonate chemistry with R. R package version 3.0 [webpage]. https://cran.r-project.org/package=seacarb

Project(s):

Ocean Acidification International Coordination Centre (OA-ICC)

Comment:

In order to allow full comparability with other ocean acidification data sets, the R package seacarb (Lavigne et al, 2014) was used to compute a complete and consistent set of carbonate system variables, as described by Nisumaa et al. (2010). In this dataset the original values were archived in addition with the recalculated parameters (see related PI). The date of carbonate chemistry calculation is 2014-09-13.

Parameter(s):

#	Name	Short Name	Unit	Principal Investigator	Method/Device	Comment
1	Species	Species		Collard, Marie
2	pH	pH		Collard, Marie		nominal, total scale
3	Aquarium number	Aquarium		Collard, Marie
4	Time point, descriptive	Time point		Collard, Marie		exposure day
5	Identification	ID		Collard, Marie		urchin
6	Coelomic fluid, pH	pH (cf)		Collard, Marie	Potentiometric	total scale
7	pH	pH		Collard, Marie	Potentiometric	total scale, mean seawater
8	Difference	Diff		Collard, Marie	Calculated	pH, total scale
9	Coelomic fluid, alkalinity	AT (cf)	µmol/kg	Collard, Marie	Potentiometric titration
10	Alkalinity, total	AT	µmol/kg	Collard, Marie	Potentiometric titration	seawater
11	Difference	Diff		Collard, Marie	Calculated	alkalinity, total
12	Comment	Comment		Collard, Marie		urchin combination
13	Coelomic fluid, carbon, inorganic, dissolved	DIC (cf)	mmol/l	Collard, Marie	Isotope ratio mass spectrometry
14	Carbon, inorganic, dissolved	DIC	mmol/l	Collard, Marie	Isotope ratio mass spectrometry	seawater
15	Difference	Diff		Collard, Marie	Calculated	carbon, inorganic, dissolved
16	δ13C, Coelomic fluid	δ13C (cf)	‰ PDB	Collard, Marie	Isotope ratio mass spectrometry
17	δ13C	δ13C	‰ PDB	Collard, Marie	Isotope ratio mass spectrometry	seawater
18	Feeding rate per individual	Feed rate/ind	#/#/day	Collard, Marie		pellets per individual per day
19	Temperature, water	Temp	°C	Collard, Marie
20	Salinity	Sal		Collard, Marie
21	pH	pH		Collard, Marie	Potentiometric	total scale
22	Alkalinity, total	AT	µmol/kg	Collard, Marie	Potentiometric titration
23	Carbon, inorganic, dissolved	DIC	µmol/kg	Collard, Marie	Isotope ratio mass spectrometry
24	Partial pressure of carbon dioxide (water) at sea surface temperature (wet air)	pCO2water_SST_wet	µatm	Collard, Marie	Calculated using CO2SYS
25	Carbon dioxide	CO2	µmol/kg	Collard, Marie	Calculated using CO2SYS
26	Bicarbonate ion	[HCO3]-	µmol/kg	Collard, Marie	Calculated using CO2SYS
27	Carbonate ion	[CO3]2-	µmol/kg	Collard, Marie	Calculated using CO2SYS
28	Calcite saturation state	Omega Cal		Collard, Marie	Calculated using CO2SYS
29	Aragonite saturation state	Omega Arg		Collard, Marie	Calculated using CO2SYS
30	Carbonate system computation flag	CSC flag		Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)
31	Carbon dioxide	CO2	µmol/kg	Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)
32	Partial pressure of carbon dioxide (water) at sea surface temperature (wet air)	pCO2water_SST_wet	µatm	Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)
33	Fugacity of carbon dioxide (water) at sea surface temperature (wet air)	fCO2water_SST_wet	µatm	Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)
34	Bicarbonate ion	[HCO3]-	µmol/kg	Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)
35	Carbonate ion	[CO3]2-	µmol/kg	Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)
36	Carbon, inorganic, dissolved	DIC	µmol/kg	Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)
37	Aragonite saturation state	Omega Arg		Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)
38	Calcite saturation state	Omega Cal		Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)

License:

Creative Commons Attribution 3.0 Unported (CC-BY-3.0)

Status:

Curation Level: Enhanced curation (CurationLevelC)

Size:

13257 data points

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