Elevated seawater pCO(2) affects reproduction and embryonic development in the pygmy squid, Idiosepius pygmaeus
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 p...
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ftjamescook:oai:researchonline.jcu.edu.au:62268 2024-02-11T10:07:34+01:00 Elevated seawater pCO(2) affects reproduction and embryonic development in the pygmy squid, Idiosepius pygmaeus Spady, Blake L. Munday, Philip L. Watson, Sue-Ann 2020 application/pdf https://researchonline.jcu.edu.au/62268/1/Spady%20et%20al.%202020.pdf unknown Elsevier https://doi.org/10.1016/j.marenvres.2019.104812 https://researchonline.jcu.edu.au/62268/ https://researchonline.jcu.edu.au/62268/1/Spady%20et%20al.%202020.pdf Spady, Blake L., Munday, Philip L., and Watson, Sue-Ann (2020) Elevated seawater pCO(2) affects reproduction and embryonic development in the pygmy squid, Idiosepius pygmaeus. Marine Environmental Research, 153. 104812. restricted Article PeerReviewed 2020 ftjamescook https://doi.org/10.1016/j.marenvres.2019.104812 2024-01-22T23:45:38Z 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 (pCO(2)) 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 (similar to 445 mu atm; similar to 8.05 pH(T)) or elevated pCO(2) conditions (similar to 940 mu atm; similar to 7.78 pH(T)) and compared reproductive traits in adults and developmental characteristics of their eggs, which remained in control or elevated pCO(2) treatments until hatching. Breeding pairs at elevated pCO(2) 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 pCO(2) did not affect fertility, time to hatch, or hatching success. Eggs were laid 40% closer together in elevated pCO(2) compared with control conditions, indicating a possible effect of elevated pCO(2) on reproductive behaviour. These results show that elevated pCO(2) 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. Article in Journal/Newspaper Ocean acidification James Cook University, Australia: ResearchOnline@JCU Marine Environmental Research 153 104812 |
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James Cook University, Australia: ResearchOnline@JCU |
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ftjamescook |
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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 (pCO(2)) 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 (similar to 445 mu atm; similar to 8.05 pH(T)) or elevated pCO(2) conditions (similar to 940 mu atm; similar to 7.78 pH(T)) and compared reproductive traits in adults and developmental characteristics of their eggs, which remained in control or elevated pCO(2) treatments until hatching. Breeding pairs at elevated pCO(2) 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 pCO(2) did not affect fertility, time to hatch, or hatching success. Eggs were laid 40% closer together in elevated pCO(2) compared with control conditions, indicating a possible effect of elevated pCO(2) on reproductive behaviour. These results show that elevated pCO(2) 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. |
format |
Article in Journal/Newspaper |
author |
Spady, Blake L. Munday, Philip L. Watson, Sue-Ann |
spellingShingle |
Spady, Blake L. Munday, Philip L. Watson, Sue-Ann Elevated seawater pCO(2) affects reproduction and embryonic development in the pygmy squid, Idiosepius pygmaeus |
author_facet |
Spady, Blake L. Munday, Philip L. Watson, Sue-Ann |
author_sort |
Spady, Blake L. |
title |
Elevated seawater pCO(2) affects reproduction and embryonic development in the pygmy squid, Idiosepius pygmaeus |
title_short |
Elevated seawater pCO(2) affects reproduction and embryonic development in the pygmy squid, Idiosepius pygmaeus |
title_full |
Elevated seawater pCO(2) affects reproduction and embryonic development in the pygmy squid, Idiosepius pygmaeus |
title_fullStr |
Elevated seawater pCO(2) affects reproduction and embryonic development in the pygmy squid, Idiosepius pygmaeus |
title_full_unstemmed |
Elevated seawater pCO(2) affects reproduction and embryonic development in the pygmy squid, Idiosepius pygmaeus |
title_sort |
elevated seawater pco(2) affects reproduction and embryonic development in the pygmy squid, idiosepius pygmaeus |
publisher |
Elsevier |
publishDate |
2020 |
url |
https://researchonline.jcu.edu.au/62268/1/Spady%20et%20al.%202020.pdf |
genre |
Ocean acidification |
genre_facet |
Ocean acidification |
op_relation |
https://doi.org/10.1016/j.marenvres.2019.104812 https://researchonline.jcu.edu.au/62268/ https://researchonline.jcu.edu.au/62268/1/Spady%20et%20al.%202020.pdf Spady, Blake L., Munday, Philip L., and Watson, Sue-Ann (2020) Elevated seawater pCO(2) affects reproduction and embryonic development in the pygmy squid, Idiosepius pygmaeus. Marine Environmental Research, 153. 104812. |
op_rights |
restricted |
op_doi |
https://doi.org/10.1016/j.marenvres.2019.104812 |
container_title |
Marine Environmental Research |
container_volume |
153 |
container_start_page |
104812 |
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1790606192598319104 |