Seawater carbonate chemistry and reproduction and embryonic development in the pygmy squid, Idiosepius pygmaeus ...

• Main Authors: Spady, Blake L, Munday, Philip L, Watson, Sue-Ann
• Format: Dataset
• Language: English
• Published: PANGAEA 2020
• Subjects: Animalia; Coast and continental shelf; Development; Idiosepius pygmaeus; Laboratory experiment; Mesocosm or benthocosm; Mollusca; Nekton; Pelagos; Reproduction; FOS Medical biotechnology; Single species; South Pacific; Tropical; Type; Species; Registration number of species; Uniform resource locator/link to reference; Identification; Length, mantle; Mass; Treatment; Replicate; Substrate type; Eggs; Eggs, fertilized; Fertilized eggs; Eggs, unfertilized; Eggs, unhatched; Eggs, hatched; Egg hatching success; Time of day; Distance; Area; Width; Stage; Temperature, water; Temperature, water, standard deviation; Salinity; Salinity, standard deviation; pH; pH, standard deviation; Alkalinity, total; Alkalinity, total, standard deviation; Partial pressure of carbon dioxide water at sea surface temperature wet air; Partial pressure of carbon dioxide, standard deviation; Carbonate system computation flag; Carbon dioxide; Carbon dioxide, standard deviation; Fugacity of carbon dioxide water at sea surface temperature wet air; Pacific; Ocean acidification
• Online Access: https://dx.doi.org/10.1594/pangaea.911559; https://doi.pangaea.de/10.1594/PANGAEA.911559

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 ... : 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. ...