CO2-induced low pH in an eastern oyster ( Crassostrea virginica) hatchery positively affects reproductive development and larval survival but negatively affects larval shape and size, with no intergenerational linkages
Abstract In North America, studies regarding effects of CO2-induced low pH in bivalve aquaculture are largely restricted to the US Pacific coast. Studies on species from the northwest Atlantic are lacking. Furthermore, information on the roles of intergenerational exposure and biological sex in biva...
Published in: | ICES Journal of Marine Science |
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Oxford University Press (OUP)
2020
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Online Access: | http://dx.doi.org/10.1093/icesjms/fsaa089 http://academic.oup.com/icesjms/article-pdf/78/1/349/36683145/fsaa089.pdf |
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croxfordunivpr:10.1093/icesjms/fsaa089 2024-10-13T14:09:52+00:00 CO2-induced low pH in an eastern oyster ( Crassostrea virginica) hatchery positively affects reproductive development and larval survival but negatively affects larval shape and size, with no intergenerational linkages Clements, Jeff C Carver, Claire E Mallet, Martin A Comeau, Luc A Mallet, André L Browman, Howard Fisheries and Oceans Canada L’Étang Ruisseau Bar Ltd Aquaculture Collaborative Research and Development Program 2020 http://dx.doi.org/10.1093/icesjms/fsaa089 http://academic.oup.com/icesjms/article-pdf/78/1/349/36683145/fsaa089.pdf en eng Oxford University Press (OUP) http://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/ ICES Journal of Marine Science volume 78, issue 1, page 349-359 ISSN 1095-9289 journal-article 2020 croxfordunivpr https://doi.org/10.1093/icesjms/fsaa089 2024-09-24T04:08:08Z Abstract In North America, studies regarding effects of CO2-induced low pH in bivalve aquaculture are largely restricted to the US Pacific coast. Studies on species from the northwest Atlantic are lacking. Furthermore, information on the roles of intergenerational exposure and biological sex in bivalve responses to low pH, particularly in an aquaculture-specific context, is scant. We tested if short-term (1 month) exposure to CO2-induced reductions in pHNBS affected the reproductive development of male and female eastern oysters (Crassostrea virginica) during hatchery-specific reproductive conditioning and whether maternal and/or paternal exposure influenced larval responses. Reduced pH (7.5–7.7) increased the rate of reproductive development in both males and females. There was no indication of intergenerational effects; adult pH conditions did not affect early larval development. In contrast, low pH conditions experienced by gametes during spawning, fertilization, and embryo incubation (48 h) resulted in higher larval survival (+6–8% from control), reduced shell height (−2 to 3 µm), and increased deformities (abnormal shell shape; +3–5%). We suggest that local adaptation to acidic land runoff may account for the positive effects of low pH observed in this study. Bioeconomic assessments are now needed to understand the implications of reduced pH on aquaculture operations in these regions of Atlantic Canada. Article in Journal/Newspaper Northwest Atlantic Oxford University Press Canada Pacific ICES Journal of Marine Science 78 1 349 359 |
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Open Polar |
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Oxford University Press |
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croxfordunivpr |
language |
English |
description |
Abstract In North America, studies regarding effects of CO2-induced low pH in bivalve aquaculture are largely restricted to the US Pacific coast. Studies on species from the northwest Atlantic are lacking. Furthermore, information on the roles of intergenerational exposure and biological sex in bivalve responses to low pH, particularly in an aquaculture-specific context, is scant. We tested if short-term (1 month) exposure to CO2-induced reductions in pHNBS affected the reproductive development of male and female eastern oysters (Crassostrea virginica) during hatchery-specific reproductive conditioning and whether maternal and/or paternal exposure influenced larval responses. Reduced pH (7.5–7.7) increased the rate of reproductive development in both males and females. There was no indication of intergenerational effects; adult pH conditions did not affect early larval development. In contrast, low pH conditions experienced by gametes during spawning, fertilization, and embryo incubation (48 h) resulted in higher larval survival (+6–8% from control), reduced shell height (−2 to 3 µm), and increased deformities (abnormal shell shape; +3–5%). We suggest that local adaptation to acidic land runoff may account for the positive effects of low pH observed in this study. Bioeconomic assessments are now needed to understand the implications of reduced pH on aquaculture operations in these regions of Atlantic Canada. |
author2 |
Browman, Howard Fisheries and Oceans Canada L’Étang Ruisseau Bar Ltd Aquaculture Collaborative Research and Development Program |
format |
Article in Journal/Newspaper |
author |
Clements, Jeff C Carver, Claire E Mallet, Martin A Comeau, Luc A Mallet, André L |
spellingShingle |
Clements, Jeff C Carver, Claire E Mallet, Martin A Comeau, Luc A Mallet, André L CO2-induced low pH in an eastern oyster ( Crassostrea virginica) hatchery positively affects reproductive development and larval survival but negatively affects larval shape and size, with no intergenerational linkages |
author_facet |
Clements, Jeff C Carver, Claire E Mallet, Martin A Comeau, Luc A Mallet, André L |
author_sort |
Clements, Jeff C |
title |
CO2-induced low pH in an eastern oyster ( Crassostrea virginica) hatchery positively affects reproductive development and larval survival but negatively affects larval shape and size, with no intergenerational linkages |
title_short |
CO2-induced low pH in an eastern oyster ( Crassostrea virginica) hatchery positively affects reproductive development and larval survival but negatively affects larval shape and size, with no intergenerational linkages |
title_full |
CO2-induced low pH in an eastern oyster ( Crassostrea virginica) hatchery positively affects reproductive development and larval survival but negatively affects larval shape and size, with no intergenerational linkages |
title_fullStr |
CO2-induced low pH in an eastern oyster ( Crassostrea virginica) hatchery positively affects reproductive development and larval survival but negatively affects larval shape and size, with no intergenerational linkages |
title_full_unstemmed |
CO2-induced low pH in an eastern oyster ( Crassostrea virginica) hatchery positively affects reproductive development and larval survival but negatively affects larval shape and size, with no intergenerational linkages |
title_sort |
co2-induced low ph in an eastern oyster ( crassostrea virginica) hatchery positively affects reproductive development and larval survival but negatively affects larval shape and size, with no intergenerational linkages |
publisher |
Oxford University Press (OUP) |
publishDate |
2020 |
url |
http://dx.doi.org/10.1093/icesjms/fsaa089 http://academic.oup.com/icesjms/article-pdf/78/1/349/36683145/fsaa089.pdf |
geographic |
Canada Pacific |
geographic_facet |
Canada Pacific |
genre |
Northwest Atlantic |
genre_facet |
Northwest Atlantic |
op_source |
ICES Journal of Marine Science volume 78, issue 1, page 349-359 ISSN 1095-9289 |
op_rights |
http://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/ |
op_doi |
https://doi.org/10.1093/icesjms/fsaa089 |
container_title |
ICES Journal of Marine Science |
container_volume |
78 |
container_issue |
1 |
container_start_page |
349 |
op_container_end_page |
359 |
_version_ |
1812816923040153600 |