Sea urchin fertilization in a warm, acidified high pCO2 ocean across a range of sperm densities
Marine invertebrate gametes are being spawned into an ocean simultaneously warming, acidifying and increasing in pCO2. Decreased pH/increased pCO2 narcotizes sperm indicating that acidification may impair fertilization, exacerbating problems of sperm limitation, with dire implications for marine lif...
Published in: | Marine Environmental Research |
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Format: | Article in Journal/Newspaper |
Language: | unknown |
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Online Access: | https://epubs.scu.edu.au/esm_pubs/1727 https://doi.org/10.1016/j.marenvres.2009.10.014 |
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ftsoutherncu:oai:epubs.scu.edu.au:esm_pubs-2732 2023-05-15T17:51:14+02:00 Sea urchin fertilization in a warm, acidified high pCO2 ocean across a range of sperm densities Byrne, Maria Soars, Natalie Selvakumraswamy, Paulina Dworjanyn, Symon A Davis, Andrew R 2010-01-01T08:00:00Z https://epubs.scu.edu.au/esm_pubs/1727 https://doi.org/10.1016/j.marenvres.2009.10.014 unknown ePublications@SCU School of Environment, Science and Engineering Papers Climate change Ocean warming Ocean acidification Sperm concentration Sea urchin Fertilization pH/pCO2 Environmental Sciences article 2010 ftsoutherncu https://doi.org/10.1016/j.marenvres.2009.10.014 2019-08-06T12:56:06Z Marine invertebrate gametes are being spawned into an ocean simultaneously warming, acidifying and increasing in pCO2. Decreased pH/increased pCO2 narcotizes sperm indicating that acidification may impair fertilization, exacerbating problems of sperm limitation, with dire implications for marine life. In contrast, increased temperature may have a stimulatory effect, enhancing fertilization. We investigated effects of ocean change on sea urchin fertilization across a range of sperm densities. We address two predictions: (1) low pH/increased pCO2 reduces fertilization at low sperm density and (2) increased temperature enhances fertilization, buffering negative effects of acidification and increased pCO2. Neither prediction was supported. Fertilization was only affected by sperm density. Increased acidification and pCO2 did not reduce fertilization even at low sperm density and increased temperature did not enhance fertilization. It is important to identify where vulnerabilities lie across life histories and our results indicate that sea urchin fertilization is robust to climate change stressors. However, developmental stages may be vulnerable to ocean change. Article in Journal/Newspaper Ocean acidification Southern Cross University: epublications@SCU Marine Environmental Research 69 4 234 239 |
institution |
Open Polar |
collection |
Southern Cross University: epublications@SCU |
op_collection_id |
ftsoutherncu |
language |
unknown |
topic |
Climate change Ocean warming Ocean acidification Sperm concentration Sea urchin Fertilization pH/pCO2 Environmental Sciences |
spellingShingle |
Climate change Ocean warming Ocean acidification Sperm concentration Sea urchin Fertilization pH/pCO2 Environmental Sciences Byrne, Maria Soars, Natalie Selvakumraswamy, Paulina Dworjanyn, Symon A Davis, Andrew R Sea urchin fertilization in a warm, acidified high pCO2 ocean across a range of sperm densities |
topic_facet |
Climate change Ocean warming Ocean acidification Sperm concentration Sea urchin Fertilization pH/pCO2 Environmental Sciences |
description |
Marine invertebrate gametes are being spawned into an ocean simultaneously warming, acidifying and increasing in pCO2. Decreased pH/increased pCO2 narcotizes sperm indicating that acidification may impair fertilization, exacerbating problems of sperm limitation, with dire implications for marine life. In contrast, increased temperature may have a stimulatory effect, enhancing fertilization. We investigated effects of ocean change on sea urchin fertilization across a range of sperm densities. We address two predictions: (1) low pH/increased pCO2 reduces fertilization at low sperm density and (2) increased temperature enhances fertilization, buffering negative effects of acidification and increased pCO2. Neither prediction was supported. Fertilization was only affected by sperm density. Increased acidification and pCO2 did not reduce fertilization even at low sperm density and increased temperature did not enhance fertilization. It is important to identify where vulnerabilities lie across life histories and our results indicate that sea urchin fertilization is robust to climate change stressors. However, developmental stages may be vulnerable to ocean change. |
format |
Article in Journal/Newspaper |
author |
Byrne, Maria Soars, Natalie Selvakumraswamy, Paulina Dworjanyn, Symon A Davis, Andrew R |
author_facet |
Byrne, Maria Soars, Natalie Selvakumraswamy, Paulina Dworjanyn, Symon A Davis, Andrew R |
author_sort |
Byrne, Maria |
title |
Sea urchin fertilization in a warm, acidified high pCO2 ocean across a range of sperm densities |
title_short |
Sea urchin fertilization in a warm, acidified high pCO2 ocean across a range of sperm densities |
title_full |
Sea urchin fertilization in a warm, acidified high pCO2 ocean across a range of sperm densities |
title_fullStr |
Sea urchin fertilization in a warm, acidified high pCO2 ocean across a range of sperm densities |
title_full_unstemmed |
Sea urchin fertilization in a warm, acidified high pCO2 ocean across a range of sperm densities |
title_sort |
sea urchin fertilization in a warm, acidified high pco2 ocean across a range of sperm densities |
publisher |
ePublications@SCU |
publishDate |
2010 |
url |
https://epubs.scu.edu.au/esm_pubs/1727 https://doi.org/10.1016/j.marenvres.2009.10.014 |
genre |
Ocean acidification |
genre_facet |
Ocean acidification |
op_source |
School of Environment, Science and Engineering Papers |
op_doi |
https://doi.org/10.1016/j.marenvres.2009.10.014 |
container_title |
Marine Environmental Research |
container_volume |
69 |
container_issue |
4 |
container_start_page |
234 |
op_container_end_page |
239 |
_version_ |
1766158317266141184 |