Effects of ocean acidification combined with multiple stressors on early life stages of the pacific purple sea urchin
Decreases in ocean pH through ocean acidification has shown to have direct negative impacts on the early life stages of the Pacific purple sea urchin, Strongylocentrotus purpuratus. Research has suggested that multiple stressors could exacerbate, cancel, or even alleviate the impacts of ocean acidif...
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ftcanadathes:oai:collectionscanada.gc.ca:BRC.10170/702 2023-05-15T17:49:17+02:00 Effects of ocean acidification combined with multiple stressors on early life stages of the pacific purple sea urchin Stavroff, Leslie-Anne Kohfeld, Karen Dallimore, Audrey Ling, Chris 2014-05-07T22:26:28Z http://hdl.handle.net/10170/702 unknown http://hdl.handle.net/10170/702 Fertilization Larval Development Multiple Stressors Ocean Acidification Purple Urchin Temperature 2014 ftcanadathes 2014-05-24T23:45:30Z Decreases in ocean pH through ocean acidification has shown to have direct negative impacts on the early life stages of the Pacific purple sea urchin, Strongylocentrotus purpuratus. Research has suggested that multiple stressors could exacerbate, cancel, or even alleviate the impacts of ocean acidification on echinoderms. This study assessed the combined effects of changes in pCO2 concentrations (390, 800, 1500 ppm), salinities (28, 31, 34 ppt) and temperatures (12, 15, 18°C) on fertilization and larval development in S. purpuratus. Increased pCO2 was the predominant stressor, with additive and antagonistic effects from temperature changes, and no effect from salinity changes. Stressor combinations significantly decreased the rate of normal larval development by 28 – 68%, whereas fertilization and larval survival were unaffected. The strong impact on normal larval development likely indicates that later development stages could be detrimentally affected and could influence the population dynamics of S. purpuratus. Other/Unknown Material Ocean acidification Theses Canada/Thèses Canada (Library and Archives Canada) Pacific |
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Theses Canada/Thèses Canada (Library and Archives Canada) |
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topic |
Fertilization Larval Development Multiple Stressors Ocean Acidification Purple Urchin Temperature |
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Fertilization Larval Development Multiple Stressors Ocean Acidification Purple Urchin Temperature Stavroff, Leslie-Anne Effects of ocean acidification combined with multiple stressors on early life stages of the pacific purple sea urchin |
topic_facet |
Fertilization Larval Development Multiple Stressors Ocean Acidification Purple Urchin Temperature |
description |
Decreases in ocean pH through ocean acidification has shown to have direct negative impacts on the early life stages of the Pacific purple sea urchin, Strongylocentrotus purpuratus. Research has suggested that multiple stressors could exacerbate, cancel, or even alleviate the impacts of ocean acidification on echinoderms. This study assessed the combined effects of changes in pCO2 concentrations (390, 800, 1500 ppm), salinities (28, 31, 34 ppt) and temperatures (12, 15, 18°C) on fertilization and larval development in S. purpuratus. Increased pCO2 was the predominant stressor, with additive and antagonistic effects from temperature changes, and no effect from salinity changes. Stressor combinations significantly decreased the rate of normal larval development by 28 – 68%, whereas fertilization and larval survival were unaffected. The strong impact on normal larval development likely indicates that later development stages could be detrimentally affected and could influence the population dynamics of S. purpuratus. |
author2 |
Kohfeld, Karen Dallimore, Audrey Ling, Chris |
author |
Stavroff, Leslie-Anne |
author_facet |
Stavroff, Leslie-Anne |
author_sort |
Stavroff, Leslie-Anne |
title |
Effects of ocean acidification combined with multiple stressors on early life stages of the pacific purple sea urchin |
title_short |
Effects of ocean acidification combined with multiple stressors on early life stages of the pacific purple sea urchin |
title_full |
Effects of ocean acidification combined with multiple stressors on early life stages of the pacific purple sea urchin |
title_fullStr |
Effects of ocean acidification combined with multiple stressors on early life stages of the pacific purple sea urchin |
title_full_unstemmed |
Effects of ocean acidification combined with multiple stressors on early life stages of the pacific purple sea urchin |
title_sort |
effects of ocean acidification combined with multiple stressors on early life stages of the pacific purple sea urchin |
publishDate |
2014 |
url |
http://hdl.handle.net/10170/702 |
geographic |
Pacific |
geographic_facet |
Pacific |
genre |
Ocean acidification |
genre_facet |
Ocean acidification |
op_relation |
http://hdl.handle.net/10170/702 |
_version_ |
1766155571687325696 |