Ocean warming will mitigate the effects of acidification on calcifying sea urchin larvae (Heliocidaris tuberculata) from the Australian global warming hot spot
The negative effect of ocean change stressors – warming and acidification – on calcifying invertebrate larvae has emerged as a significant impact of global change. We assessed the arm growth response of the echinopluteus larva of Heliocidaris tuberculata to simultaneous exposure to these stressors i...
Published in: | Journal of Experimental Marine Biology and Ecology |
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Online Access: | https://epubs.scu.edu.au/esm_pubs/2068 https://doi.org/10.1016/j.jembe.2013.07.016 |
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ftsoutherncu:oai:epubs.scu.edu.au:esm_pubs-3068 2023-05-15T17:51:47+02:00 Ocean warming will mitigate the effects of acidification on calcifying sea urchin larvae (Heliocidaris tuberculata) from the Australian global warming hot spot Byrne, Maria Foo, Shawna Soars, Natalie A Wolfe, Kennedy DL Nguyen, Hong D Hardy, Natasha Dworjanyn, Symon A 2013-01-01T08:00:00Z https://epubs.scu.edu.au/esm_pubs/2068 https://doi.org/10.1016/j.jembe.2013.07.016 unknown ePublications@SCU School of Environment, Science and Engineering Papers Calcifying larvae Echinopluteus Global change Ocean acidification Ocean warming Environmental Sciences article 2013 ftsoutherncu https://doi.org/10.1016/j.jembe.2013.07.016 2019-08-06T12:52:34Z The negative effect of ocean change stressors – warming and acidification – on calcifying invertebrate larvae has emerged as a significant impact of global change. We assessed the arm growth response of the echinopluteus larva of Heliocidaris tuberculata to simultaneous exposure to these stressors in cross-factorial experiments involving ambient and near future temperatures (control − 20 °C; + 4 °C: 24 °C) and pHNIST levels (control: pH 8.1; − 3–7 pH units: pH 7.6–7.8). The more extreme pH treatment, pH 7.4, not a near-future condition, was used to assess tolerance levels. Experiments were designed with respect to present day conditions determined for the habitat of H. tuberculata and future (2100 +) conditions for the southeast Australia global warming hot spot. Across near future warming-acidification treatments (24 °C/pH 7.6–7.8) there was a 5–25% decrease in normal development and, at pH 7.4, this increased to 11–33%. Increased temperature facilitated larval growth across all pH treatments with a 20–50% increase in arm length at + 4 °C across all pH levels. Larval growth was strongly reduced by acidification with a 15–25% decrease in arm length at pH 7.4–7.6 at control temperature. Warming mitigated the effect of pH on growth. Both stressors increased larval abnormality and asymmetry. The stunting effect of decreased pH on larval growth is typical of echinoplutei, indicating that similar mechanisms operate across species. The large proportion of normal and larger larvae in the + 4 °C/pH 7.8 treatments indicate that H. tuberculata may tolerate near-future ocean change and this may be facilitated by acclimatization or adaption. Article in Journal/Newspaper Ocean acidification Southern Cross University: epublications@SCU Journal of Experimental Marine Biology and Ecology 448 250 257 |
institution |
Open Polar |
collection |
Southern Cross University: epublications@SCU |
op_collection_id |
ftsoutherncu |
language |
unknown |
topic |
Calcifying larvae Echinopluteus Global change Ocean acidification Ocean warming Environmental Sciences |
spellingShingle |
Calcifying larvae Echinopluteus Global change Ocean acidification Ocean warming Environmental Sciences Byrne, Maria Foo, Shawna Soars, Natalie A Wolfe, Kennedy DL Nguyen, Hong D Hardy, Natasha Dworjanyn, Symon A Ocean warming will mitigate the effects of acidification on calcifying sea urchin larvae (Heliocidaris tuberculata) from the Australian global warming hot spot |
topic_facet |
Calcifying larvae Echinopluteus Global change Ocean acidification Ocean warming Environmental Sciences |
description |
The negative effect of ocean change stressors – warming and acidification – on calcifying invertebrate larvae has emerged as a significant impact of global change. We assessed the arm growth response of the echinopluteus larva of Heliocidaris tuberculata to simultaneous exposure to these stressors in cross-factorial experiments involving ambient and near future temperatures (control − 20 °C; + 4 °C: 24 °C) and pHNIST levels (control: pH 8.1; − 3–7 pH units: pH 7.6–7.8). The more extreme pH treatment, pH 7.4, not a near-future condition, was used to assess tolerance levels. Experiments were designed with respect to present day conditions determined for the habitat of H. tuberculata and future (2100 +) conditions for the southeast Australia global warming hot spot. Across near future warming-acidification treatments (24 °C/pH 7.6–7.8) there was a 5–25% decrease in normal development and, at pH 7.4, this increased to 11–33%. Increased temperature facilitated larval growth across all pH treatments with a 20–50% increase in arm length at + 4 °C across all pH levels. Larval growth was strongly reduced by acidification with a 15–25% decrease in arm length at pH 7.4–7.6 at control temperature. Warming mitigated the effect of pH on growth. Both stressors increased larval abnormality and asymmetry. The stunting effect of decreased pH on larval growth is typical of echinoplutei, indicating that similar mechanisms operate across species. The large proportion of normal and larger larvae in the + 4 °C/pH 7.8 treatments indicate that H. tuberculata may tolerate near-future ocean change and this may be facilitated by acclimatization or adaption. |
format |
Article in Journal/Newspaper |
author |
Byrne, Maria Foo, Shawna Soars, Natalie A Wolfe, Kennedy DL Nguyen, Hong D Hardy, Natasha Dworjanyn, Symon A |
author_facet |
Byrne, Maria Foo, Shawna Soars, Natalie A Wolfe, Kennedy DL Nguyen, Hong D Hardy, Natasha Dworjanyn, Symon A |
author_sort |
Byrne, Maria |
title |
Ocean warming will mitigate the effects of acidification on calcifying sea urchin larvae (Heliocidaris tuberculata) from the Australian global warming hot spot |
title_short |
Ocean warming will mitigate the effects of acidification on calcifying sea urchin larvae (Heliocidaris tuberculata) from the Australian global warming hot spot |
title_full |
Ocean warming will mitigate the effects of acidification on calcifying sea urchin larvae (Heliocidaris tuberculata) from the Australian global warming hot spot |
title_fullStr |
Ocean warming will mitigate the effects of acidification on calcifying sea urchin larvae (Heliocidaris tuberculata) from the Australian global warming hot spot |
title_full_unstemmed |
Ocean warming will mitigate the effects of acidification on calcifying sea urchin larvae (Heliocidaris tuberculata) from the Australian global warming hot spot |
title_sort |
ocean warming will mitigate the effects of acidification on calcifying sea urchin larvae (heliocidaris tuberculata) from the australian global warming hot spot |
publisher |
ePublications@SCU |
publishDate |
2013 |
url |
https://epubs.scu.edu.au/esm_pubs/2068 https://doi.org/10.1016/j.jembe.2013.07.016 |
genre |
Ocean acidification |
genre_facet |
Ocean acidification |
op_source |
School of Environment, Science and Engineering Papers |
op_doi |
https://doi.org/10.1016/j.jembe.2013.07.016 |
container_title |
Journal of Experimental Marine Biology and Ecology |
container_volume |
448 |
container_start_page |
250 |
op_container_end_page |
257 |
_version_ |
1766159037133488128 |