Citation:

aei00183

Name: Effects of temperature and ocean acidification on shell characteristics of Argopecten purpuratus: implications for scallop aquaculture in an upwelling-influenced area
Published: 2016-12-14
License: https://creativecommons.org/licenses/by/3.0/
Keywords: Animalia; Argopecten purpuratus; Benthic animals; Benthos; Bottles or small containers/Aquaria (<20 L); Calcification/Dissolution; Coast and continental shelf; Growth/Morphology; Laboratory experiment; Mollusca; Single species; South Atlantic; Temperate; Temperature

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Abstract:

Coastal upwelling regions already constitute hot spots of ocean acidification as naturally acidified waters are brought to the surface. This effect could be exacerbated by ocean acidification and warming, both caused by rising concentrations of atmospheric CO2. Along the Chilean coast, upwelling supports highly productive fisheries and aquaculture activities. However, during recent years, there has been a documented decline in the national production of the native scallop Argopecten purpuratus. We assessed the combined effects of temperature and pCO2-driven ocean acidification on the growth rates and shell characteristics of this species farmed under the natural influence of upwelling waters occurring in northern Chile (30°S, Tongoy Bay). The experimental scenario representing current conditions (14 °C, pH 8.0) were typical of natural values recorded in Tongoy Bay, whilst conditions representing the low pH scenario were typical of an adjacent upwelling area (pH 7.6). Shell thickness, weight, and biomass were reduced under low pH (pH 7.7) and increased temperature (18 °C) conditions. At ambient temperature (14 °C) and low pH, scallops showed increased shell dissolution and low growth rates. However, elevated temperatures ameliorated the impacts of low pH, as evidenced by growth rates in both pH treatments at the higher temperature treatment that were not significantly different from the control treatment. The impact of low pH at current temperature on scallop growth suggests that the upwelling could increase the time required for scallops to reach marketable size. Mortality of farmed scallops is discussed in relation to our observations of multiple environmental stressors in this upwelling-influenced area.

Keyword(s):

Animalia; Argopecten purpuratus; Benthic animals; Benthos; Bottles or small containers/Aquaria (<20 L); Calcification/Dissolution; Coast and continental shelf; Growth/Morphology; Laboratory experiment; Mollusca; Single species; South Atlantic; Temperate; Temperature

Further details:

Gattuso, Jean-Pierre; Epitalon, Jean-Marie; Lavigne, Héloïse; Orr, James C; Gentili, Bernard; Proye, Aurélien; Soetaert, Karline; Rae, James (2016): seacarb: seawater carbonate chemistry with R. R package version 3.1. 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 (Gattuso et al, 2016) 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 2016-12-13.

Parameter(s):

#	Name	Short Name	Unit	Principal Investigator	Method/Device	Comment
1	Type	Type		Lagos, Nelson A
2	Species	Species		Lagos, Nelson A
3	Registration number of species	Reg spec no		Lagos, Nelson A
4	Uniform resource locator/link to reference	URL ref		Lagos, Nelson A
5	Temperature, water	Temp	°C	Lagos, Nelson A		treatment
6	pH	pH		Lagos, Nelson A		treatment
7	Shell thickness	Shell thick	mm	Lagos, Nelson A
8	Thickness, standard error	Thick std e	±	Lagos, Nelson A		shell
9	Shell, dry mass	SDM	g	Lagos, Nelson A
10	Shell, mass, standard error	Shell m std e	±	Lagos, Nelson A
11	Biomass, wet mass	Biom wm	%	Lagos, Nelson A
12	Biomass, standard error	Biom std e	±	Lagos, Nelson A
13	Growth rate	µ	mm/day	Lagos, Nelson A		increments in the shell height
14	Growth rate, standard error	µ std e	±	Lagos, Nelson A		increments in the shell height
15	Growth rate	µ	mm/day	Lagos, Nelson A		increments in the shell length
16	Growth rate, standard error	µ std e	±	Lagos, Nelson A		increments in the shell length
17	Calcification rate	Calc rate	mg/day	Lagos, Nelson A		net
18	Calcification rate, standard error	Calc rate std e	±	Lagos, Nelson A		net
19	Dissolution rate	Diss rate	mg/day	Lagos, Nelson A		shell
20	Dissolution rate, standard error	Diss rate std e	±	Lagos, Nelson A		shell
21	Temperature, water	Temp	°C	Lagos, Nelson A
22	Temperature, water, standard deviation	Temp std dev	±	Lagos, Nelson A
23	Salinity	Sal		Lagos, Nelson A
24	Salinity, standard deviation	Sal std dev	±	Lagos, Nelson A
25	pH	pH		Lagos, Nelson A	Potentiometric	NBS scale
26	pH, standard deviation	pH std dev	±	Lagos, Nelson A	Potentiometric	NBS scale
27	Alkalinity, total	AT	µmol/kg	Lagos, Nelson A	Potentiometric titration
28	Alkalinity, total, standard deviation	AT std dev	±	Lagos, Nelson A	Potentiometric titration
29	Carbonate ion	[CO3]2-	µmol/kg	Lagos, Nelson A	Calculated using CO2SYS
30	Carbonate ion, standard deviation	[CO3]2- std dev	±	Lagos, Nelson A	Calculated using CO2SYS
31	Partial pressure of carbon dioxide (water) at sea surface temperature (wet air)	pCO2water_SST_wet	µatm	Lagos, Nelson A	Calculated using CO2SYS
32	Partial pressure of carbon dioxide, standard deviation	pCO2 std dev	±	Lagos, Nelson A	Calculated using CO2SYS
33	Calcite saturation state	Omega Cal		Lagos, Nelson A	Calculated using CO2SYS
34	Calcite saturation state, standard deviation	Omega Cal std dev	±	Lagos, Nelson A	Calculated using CO2SYS
35	Aragonite saturation state	Omega Arg		Lagos, Nelson A	Calculated using CO2SYS
36	Aragonite saturation state, standard deviation	Omega Arg std dev	±	Lagos, Nelson A	Calculated using CO2SYS
37	Carbonate system computation flag	CSC flag		Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)
38	pH	pH		Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)	total scale
39	Carbon dioxide	CO2	µmol/kg	Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)
40	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)
41	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)
42	Bicarbonate ion	[HCO3]-	µmol/kg	Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)
43	Carbonate ion	[CO3]2-	µmol/kg	Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)
44	Carbon, inorganic, dissolved	DIC	µmol/kg	Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)
45	Aragonite saturation state	Omega Arg		Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)
46	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:

184 data points

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