Extreme low oxygen and decreased pH conditions naturally occur within developing squid egg capsules
Author Posting. © The Author(s), 2016. This is the author's version of the work. It is posted here by permission of Inter-Research for personal use, not for redistribution. The definitive version was published in Marine Ecology Progress Series 550 (2016): 111-119, doi:10.3354/meps11737. Young a...
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ftwhoas:oai:darchive.mblwhoilibrary.org:1912/8242 2023-05-15T17:50:13+02:00 Extreme low oxygen and decreased pH conditions naturally occur within developing squid egg capsules Long, Matthew H. Mooney, T. Aran Zakroff, Casey 2016-04 https://hdl.handle.net/1912/8242 en_US eng https://doi.org/10.3354/meps11737 https://hdl.handle.net/1912/8242 Cephalopod Climate change Hypoxia Boundary layer Eggs Larva Preprint 2016 ftwhoas https://doi.org/10.3354/meps11737 2022-05-28T22:59:39Z Author Posting. © The Author(s), 2016. This is the author's version of the work. It is posted here by permission of Inter-Research for personal use, not for redistribution. The definitive version was published in Marine Ecology Progress Series 550 (2016): 111-119, doi:10.3354/meps11737. Young animals found future cohorts and populations but are often particularly susceptible to environmental changes. This raises concerns that future conditions, influenced by anthropogenic changes such as ocean acidification and increasing oxygen minimum zones, will greatly affect ecosystems by impacting developing larvae. Understanding the potential impacts requires addressing present tolerances and the current conditions in which animals develop. Here, we examined the changes in oxygen and pH adjacent to and within normally-developing squid egg capsules, providing the first observations that the egg capsules, housing hundreds of embryos, had extremely low internal pH (7.34) and oxygen concentrations (1.9 μmol L-1). While early-stage egg capsules had pH and oxygen levels significantly lower than the surrounding seawater, late-stage capsules dropped dramatically to levels considered metabolically stressful even for adults. The structure of squid egg capsules resulted in a closely packed unit of respiring embryos, which likely contributed to the oxygen-poor and CO2-rich local environment. These conditions rivaled the extremes found in the squids’ natural environment, suggesting they may already be near their metabolic limit and that these conditions may induce a hatching cue. While squid may be adapted to these conditions, further climate change could place young, keystone squid outside of their physiological limits. This work was supported by a NSF Ocean Acidification grant (#1220034; TAM) and the WHOI Ocean Climate Change Institute (Ocean Acidification Initiative; MHL). 2017-05-25 Report Ocean acidification Woods Hole Scientific Community: WHOAS (Woods Hole Open Access Server) Marine Ecology Progress Series 550 111 119 |
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Woods Hole Scientific Community: WHOAS (Woods Hole Open Access Server) |
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language |
English |
topic |
Cephalopod Climate change Hypoxia Boundary layer Eggs Larva |
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Cephalopod Climate change Hypoxia Boundary layer Eggs Larva Long, Matthew H. Mooney, T. Aran Zakroff, Casey Extreme low oxygen and decreased pH conditions naturally occur within developing squid egg capsules |
topic_facet |
Cephalopod Climate change Hypoxia Boundary layer Eggs Larva |
description |
Author Posting. © The Author(s), 2016. This is the author's version of the work. It is posted here by permission of Inter-Research for personal use, not for redistribution. The definitive version was published in Marine Ecology Progress Series 550 (2016): 111-119, doi:10.3354/meps11737. Young animals found future cohorts and populations but are often particularly susceptible to environmental changes. This raises concerns that future conditions, influenced by anthropogenic changes such as ocean acidification and increasing oxygen minimum zones, will greatly affect ecosystems by impacting developing larvae. Understanding the potential impacts requires addressing present tolerances and the current conditions in which animals develop. Here, we examined the changes in oxygen and pH adjacent to and within normally-developing squid egg capsules, providing the first observations that the egg capsules, housing hundreds of embryos, had extremely low internal pH (7.34) and oxygen concentrations (1.9 μmol L-1). While early-stage egg capsules had pH and oxygen levels significantly lower than the surrounding seawater, late-stage capsules dropped dramatically to levels considered metabolically stressful even for adults. The structure of squid egg capsules resulted in a closely packed unit of respiring embryos, which likely contributed to the oxygen-poor and CO2-rich local environment. These conditions rivaled the extremes found in the squids’ natural environment, suggesting they may already be near their metabolic limit and that these conditions may induce a hatching cue. While squid may be adapted to these conditions, further climate change could place young, keystone squid outside of their physiological limits. This work was supported by a NSF Ocean Acidification grant (#1220034; TAM) and the WHOI Ocean Climate Change Institute (Ocean Acidification Initiative; MHL). 2017-05-25 |
format |
Report |
author |
Long, Matthew H. Mooney, T. Aran Zakroff, Casey |
author_facet |
Long, Matthew H. Mooney, T. Aran Zakroff, Casey |
author_sort |
Long, Matthew H. |
title |
Extreme low oxygen and decreased pH conditions naturally occur within developing squid egg capsules |
title_short |
Extreme low oxygen and decreased pH conditions naturally occur within developing squid egg capsules |
title_full |
Extreme low oxygen and decreased pH conditions naturally occur within developing squid egg capsules |
title_fullStr |
Extreme low oxygen and decreased pH conditions naturally occur within developing squid egg capsules |
title_full_unstemmed |
Extreme low oxygen and decreased pH conditions naturally occur within developing squid egg capsules |
title_sort |
extreme low oxygen and decreased ph conditions naturally occur within developing squid egg capsules |
publishDate |
2016 |
url |
https://hdl.handle.net/1912/8242 |
genre |
Ocean acidification |
genre_facet |
Ocean acidification |
op_relation |
https://doi.org/10.3354/meps11737 https://hdl.handle.net/1912/8242 |
op_doi |
https://doi.org/10.3354/meps11737 |
container_title |
Marine Ecology Progress Series |
container_volume |
550 |
container_start_page |
111 |
op_container_end_page |
119 |
_version_ |
1766156877593313280 |