Citation:

PANGAEA.961093

Name: Seawater carbonate chemistry and properties of the exoskeleton in adult Tanner crabs, Chionoecetes bairdi
Published: 2023-07-24
License: https://creativecommons.org/licenses/by/4.0/
Keywords: Animalia; Arthropoda; Benthic animals; Benthos; Biomass/Abundance/Elemental composition; Calcification/Dissolution; Chionoecetes bairdi; Coast and continental shelf; Containers and aquaria (20-1000 L or < 1 m**2); Growth/Morphology; Laboratory experiment; North Pacific; Other studied parameter or process; Single species; Temperate

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Abstract:

Ocean acidification can affect the ability of calcifying organisms to build and maintain mineralized tissue. In decapod crustaceans, the exoskeleton is a multilayered structure composed of chitin, protein, and mineral, predominately magnesian calcite or amorphous calcium carbonate (ACC). We investigated the effects of acidification on the exoskeleton of mature (post-terminal-molt) female southern Tanner crabs, Chionoecetes bairdi. Crabs were exposed to one of three pH levels—8.1, 7.8, or 7.5—for two years. Reduced pH led to a suite of body-region-specific effects on the exoskeleton. Microhardness of the claw was 38% lower in crabs at pH 7.5 compared with those at pH 8.1, but carapace microhardness was unaffected by pH. In contrast, reduced pH altered elemental content in the carapace (reduced calcium, increased magnesium), but not the claw. Diminished structural integrity and thinning of the exoskeleton was observed at reduced pH in both body regions; internal erosion of the carapace was present in most crabs at pH 7.5, and the claws of these crabs showed substantial external erosion, with tooth-like denticles nearly or completely worn away. Using infrared spectroscopy, we observed a shift in the phase of calcium carbonate present in the carapace of pH-7.5 crabs: a mix of ACC and calcite was found in the carapace of crabs at pH 8.1, whereas the bulk of calcium carbonate had transformed to calcite in pH-7.5 crabs. With limited capacity for repair, the exoskeleton of long-lived crabs that undergo a terminal molt, such as C. bairdi, may be especially susceptible to ocean acidification.

Keyword(s):

Animalia; Arthropoda; Benthic animals; Benthos; Biomass/Abundance/Elemental composition; Calcification/Dissolution; Chionoecetes bairdi; Coast and continental shelf; Containers and aquaria (20-1000 L or < 1 m**2); Growth/Morphology; Laboratory experiment; North Pacific; Other studied parameter or process; Single species; Temperate

Supplement to:

Dickinson, Gary H; Bejerano, Shai; Salvador, Trina; Makdisi, Christine; Patel, Shrey; Long, W Christopher; Swiney, Katherine M; Foy, Robert J; Steffel, Brittan V; Smith, Kathryn E; Aronson, Richard B (2021): Ocean acidification alters properties of the exoskeleton in adult Tanner crabs, Chionoecetes bairdi. Journal of Experimental Biology, 224(3), jeb232819, https://doi.org/10.1242/jeb.232819

Source:

Dickinson, Gary H; Bejerano, Shai; Salvador, Trina; Makdisi, Christine; Patel, Shrey; Long, W Christopher; Swiney, Katherine M; Foy, Robert J; Steffel, Brittan V; Smith, Kathryn E; Aronson, Richard B (2021): Data set of ocean acidification alters properties of the exoskeleton in adult tanner crabs, Chionoecetes bairdi. Dryad, https://doi.org/10.5061/dryad.5mkkwh74w

Documentation:

Gattuso, Jean-Pierre; Epitalon, Jean-Marie; Lavigne, Héloïse; Orr, James (2019): seacarb: Seawater Carbonate Chemistry. R package version 3.2.15. https://CRAN.R-project.org/package=seacarb

Project(s):

Ocean Acidification International Coordination Centre (OA-ICC)

Coverage:

Latitude: 57.720800 * Longitude: -152.291700

Date/Time Start: 2011-07-01T00:00:00 * Date/Time End: 2013-07-06T00:00:00

Event(s):

Chiniak_Bay * Latitude: 57.720800 * Longitude: -152.291700 * Date/Time Start: 2011-07-01T00:00:00 * Date/Time End: 2013-07-06T00:00:00 * Method/Device: Experiment (EXP)

Comment:

In order to allow full comparability with other ocean acidification data sets, the R package seacarb (Gattuso et al, 2022) 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 by seacarb is 2023-07-24.

Parameter(s):

#	Name	Short Name	Unit	Principal Investigator	Method/Device	Comment
1	Type of study	Study type		Dickinson, Gary H
2	Species, unique identification	Species UID		Dickinson, Gary H
3	Species, unique identification (URI)	Species UID (URI)		Dickinson, Gary H
4	Species, unique identification (Semantic URI)	Species UID (Semantic URI)		Dickinson, Gary H
5	Sample ID	Sample ID		Dickinson, Gary H
6	Treatment: pH	T:pH		Dickinson, Gary H
7	Calcium	Ca	%	Dickinson, Gary H		% dry mass, Carapace
8	Magnesium	Mg	%	Dickinson, Gary H		% dry mass, Carapace
9	Strontium	Sr	%	Dickinson, Gary H		% dry mass, Carapace
10	Vickers Hardness	VH	HV	Dickinson, Gary H		Dry, Carapace, microhardness
11	Vickers Hardness	VH	HV	Dickinson, Gary H		Wet, Carapace, microhardness
12	Thickness	Thick	µm	Dickinson, Gary H		Total, Carapace
13	v2 peak position, Calcium carbonate	v2 peak pos CaCO3	1/cm	Dickinson, Gary H		Carapace
14	Category	Cat		Dickinson, Gary H		Errosion, Carapace
15	Calcium	Ca	%	Dickinson, Gary H		% dry mass, Claw
16	Magnesium	Mg	%	Dickinson, Gary H		% dry mass, Claw
17	Strontium	Sr	%	Dickinson, Gary H		% dry mass, Claw
18	Vickers Hardness	VH	HV	Dickinson, Gary H		Dry, Claw, microhardness
19	Vickers Hardness	VH	HV	Dickinson, Gary H		Wet, Claw, microhardness
20	Thickness	Thick	µm	Dickinson, Gary H		Total, Claw
21	v2 peak position, Calcium carbonate	v2 peak pos CaCO3	1/cm	Dickinson, Gary H		Claw
22	Pollex damage score	Pollex damage		Dickinson, Gary H		1-3 with 1 indicating minimal damage and 3 indicating extensive damage of claw
23	pH	pH		Dickinson, Gary H		Free scale
24	pH, standard deviation	pH std dev	±	Dickinson, Gary H		Free scale
25	Temperature, water	Temp	°C	Dickinson, Gary H
26	Temperature, water, standard deviation	Temp std dev	±	Dickinson, Gary H
27	Partial pressure of carbon dioxide (water) at sea surface temperature (wet air)	pCO2water_SST_wet	µatm	Dickinson, Gary H	Calculated using seacarb
28	Partial pressure of carbon dioxide, standard deviation	pCO2 std dev	±	Dickinson, Gary H	Calculated using seacarb
29	Carbon, inorganic, dissolved	DIC	µmol/kg	Dickinson, Gary H
30	Carbon, inorganic, dissolved, standard deviation	DIC std dev	±	Dickinson, Gary H
31	Bicarbonate ion	[HCO3]-	µmol/kg	Dickinson, Gary H	Calculated using seacarb
32	Bicarbonate ion, standard deviation	[HCO3]- std dev	±	Dickinson, Gary H	Calculated using seacarb
33	Carbonate ion	[CO3]2-	µmol/kg	Dickinson, Gary H	Calculated using seacarb
34	Carbonate ion, standard deviation	[CO3]2- std dev	±	Dickinson, Gary H	Calculated using seacarb
35	Alkalinity, total	AT	µmol/kg	Dickinson, Gary H
36	Alkalinity, total, standard deviation	AT std dev	±	Dickinson, Gary H
37	Calcite saturation state	Omega Cal		Dickinson, Gary H	Calculated using seacarb
38	Calcite saturation state, standard deviation	Omega Cal std dev	±	Dickinson, Gary H	Calculated using seacarb
39	Salinity	Sal		Dickinson, Gary H
40	Salinity, standard deviation	Sal std dev	±	Dickinson, Gary H
41	Carbonate system computation flag	CSC flag		Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)
42	pH	pH		Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)	total scale
43	Carbon dioxide	CO2	µmol/kg	Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)
44	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)
45	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)
46	Bicarbonate ion	[HCO3]-	µmol/kg	Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)
47	Carbonate ion	[CO3]2-	µmol/kg	Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)
48	Aragonite saturation state	Omega Arg		Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)
49	Calcite saturation state	Omega Cal		Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)

License:

Creative Commons Attribution 4.0 International (CC-BY-4.0)

Status:

Curation Level: Enhanced curation (CurationLevelC)

Size:

1244 data points

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