Citation:

j.marenvres.2019.104812

Name: Seawater carbonate chemistry and reproduction and embryonic development in the pygmy squid, Idiosepius pygmaeus
Published: 2020-01-31
License: https://creativecommons.org/licenses/by/4.0/
Keywords: Animalia; Coast and continental shelf; Development; Idiosepius pygmaeus; Laboratory experiment; Mesocosm or benthocosm; Mollusca; Nekton; Pelagos; Reproduction; Single species; South Pacific; Tropical

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Abstract:

The oceans are absorbing additional carbon dioxide (CO2) from the atmosphere and projected future CO2 levels and ocean acidification could have negative implications for many marine organisms, especially during early life stages. Cephalopods are ecologically important in marine ecosystems, yet the potential effects of increased partial pressure of CO2 (pCO2) in seawater on cephalopod reproduction and embryonic development are little studied. We allowed adult two-toned pygmy squid (Idiosepius pygmaeus) to breed in ambient control (∼445 μatm; ∼8.05 pH) or elevated pCO2 conditions (∼940 μatm; ∼7.78 pH) and compared reproductive traits in adults and developmental characteristics of their eggs, which remained in control or elevated pCO2 treatments until hatching. Breeding pairs at elevated pCO2 produced clutches with 40% fewer eggs, vitelli that were 14% smaller directly after spawning, embryos that were 5% smaller upon hatching, and eggs with an 8% increase in late-stage egg swelling compared with pairs at control conditions. Elevated pCO2 did not affect fertility, time to hatch, or hatching success. Eggs were laid 40% closer together in elevated pCO2 compared with control conditions, indicating a possible effect of elevated pCO2 on reproductive behaviour. These results show that elevated pCO2 can adversely affect reproduction and embryonic development of the two-toned pygmy squid. As the potential for adaptation is influenced by reproductive success, testing the capacity for squid to adapt to future ocean conditions should be a priority for future research.

Keyword(s):

Animalia; Coast and continental shelf; Development; Idiosepius pygmaeus; Laboratory experiment; Mesocosm or benthocosm; Mollusca; Nekton; Pelagos; Reproduction; Single species; South Pacific; Tropical

Original version:

Spady, Blake L (2019): Elevated CO2 affects reproduction and embryonic development in the pygmy squid, Idiosepius pygmaeus. James Cook University, https://doi.org/10.25903/5c89bb8aba60f

Further details:

Gattuso, Jean-Pierre; Epitalon, Jean-Marie; Lavigne, Héloïse; Orr, James C; Gentili, Bernard; Hagens, Mathilde; Hofmann, Andreas; Mueller, Jens-Daniel; Proye, Aurélien; Rae, James; Soetaert, Karline (2019): seacarb: seawater carbonate chemistry with R. R package version 3.2.12. https://CRAN.R-project.org/package=seacarb

Project(s):

Ocean Acidification International Coordination Centre (OA-ICC)

Coverage:

Latitude: -19.400000 * Longitude: 147.366670

Date/Time Start: 2016-01-01T00:00:00 * Date/Time End: 2016-03-31T00:00:00

Event(s):

Cleveland_Bay_OA * Latitude: -19.400000 * Longitude: 147.366670 * Date/Time Start: 2016-01-01T00:00:00 * Date/Time End: 2016-03-31T00:00:00 * Method/Device: Experiment (EXP)

Comment:

In order to allow full comparability with other ocean acidification data sets, the R package seacarb (Gattuso et al, 2019) 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 2020-01-28.

Parameter(s):

#	Name	Short Name	Unit	Principal Investigator	Method/Device	Comment
1	Type	Type		Spady, Blake L		study
2	Species	Species		Spady, Blake L
3	Registration number of species	Reg spec no		Spady, Blake L
4	Uniform resource locator/link to reference	URL ref		Spady, Blake L		WoRMS Aphia ID
5	Identification	ID		Spady, Blake L
6	Identification	ID		Spady, Blake L		Pair
7	Identification	ID		Spady, Blake L		Clutch
8	Mantle, length	Mantle l	mm	Spady, Blake L		maternal parent
9	Mantle, length	Mantle l	mm	Spady, Blake L		paternal parent
10	Mass	Mass	g	Spady, Blake L		maternal parent
11	Mass	Mass	g	Spady, Blake L		paternal parent
12	Treatment	Treat		Spady, Blake L
13	Replicate	Repl		Spady, Blake L
14	Substrate type	Substrate		Spady, Blake L
15	Eggs	Eggs	#	Spady, Blake L		spawned
16	Eggs, fertilized	Fert eggs	#	Spady, Blake L
17	Fertilized eggs	Fert eggs	%	Spady, Blake L
18	Eggs, unfertilized	Unfert eggs	#	Spady, Blake L
19	Eggs	Eggs	#	Spady, Blake L		deformed
20	Eggs, unhatched	Eggs unhatch	#	Spady, Blake L
21	Eggs, hatched	Eggs hatch	#	Spady, Blake L
22	Egg hatching success	Egg hatch success	%	Spady, Blake L
23	Time of day	Time of day		Spady, Blake L		for 25% of eggs within the clutch to hatch
24	Time of day	Time of day		Spady, Blake L		from the beginning of hatching until all eggs within clutch have hatched
25	Distance	Dist	mm	Spady, Blake L		between eggs
26	Area	Area	cm²	Spady, Blake L		embryo at stage 1
27	Area	Area	cm²	Spady, Blake L		egg case at stage 1
28	Width	w	mm	Spady, Blake L		head at stage 23
29	Mantle, length	Mantle l	mm	Spady, Blake L		at stage 30
30	Area	Area	cm²	Spady, Blake L		egg case at stage 30
31	Stage	Stage		Spady, Blake L
32	Temperature, water	Temp	°C	Spady, Blake L
33	Temperature, water, standard deviation	Temp std dev	±	Spady, Blake L
34	Salinity	Sal		Spady, Blake L
35	Salinity, standard deviation	Sal std dev	±	Spady, Blake L
36	pH	pH		Spady, Blake L	Spectrophotometric	total scale
37	pH, standard deviation	pH std dev	±	Spady, Blake L	Spectrophotometric	total scale
38	Alkalinity, total	AT	µmol/kg	Spady, Blake L	Potentiometric titration
39	Alkalinity, total, standard deviation	AT std dev	±	Spady, Blake L	Potentiometric titration
40	Partial pressure of carbon dioxide (water) at sea surface temperature (wet air)	pCO2water_SST_wet	µatm	Spady, Blake L	Calculated using CO2SYS
41	Partial pressure of carbon dioxide, standard deviation	pCO2 std dev	±	Spady, Blake L	Calculated using CO2SYS
42	Carbonate system computation flag	CSC flag		Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)
43	Carbon dioxide	CO2	µmol/kg	Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)
44	Carbon dioxide, standard deviation	CO2 std dev	±	Yang, Yan	Calculated using seacarb after Orr et al. (2018)
45	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)
46	Fugacity of carbon dioxide in seawater, standard deviation	fCO2 std dev	±	Yang, Yan	Calculated using seacarb after Orr et al. (2018)
47	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)
48	Partial pressure of carbon dioxide, standard deviation	pCO2 std dev	±	Yang, Yan	Calculated using seacarb after Orr et al. (2018)
49	Bicarbonate ion	[HCO3]-	µmol/kg	Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)
50	Bicarbonate ion, standard deviation	[HCO3]- std dev	±	Yang, Yan	Calculated using seacarb after Orr et al. (2018)
51	Carbonate ion	[CO3]2-	µmol/kg	Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)
52	Carbonate ion, standard deviation	[CO3]2- std dev	±	Yang, Yan	Calculated using seacarb after Orr et al. (2018)
53	Carbon, inorganic, dissolved	DIC	µmol/kg	Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)
54	Carbon, inorganic, dissolved, standard deviation	DIC std dev	±	Yang, Yan	Calculated using seacarb after Orr et al. (2018)
55	Aragonite saturation state	Omega Arg		Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)
56	Aragonite saturation state, standard deviation	Omega Arg std dev	±	Yang, Yan	Calculated using seacarb after Orr et al. (2018)
57	Calcite saturation state	Omega Cal		Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)
58	Calcite saturation state, standard deviation	Omega Cal std dev	±	Yang, Yan	Calculated using seacarb after Orr et al. (2018)

License:

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

Status:

Curation Level: Enhanced curation (CurationLevelC)

Size:

44760 data points

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