THE EFFECTS OF OCEAN ACIDIFICATION AND SEA SURFACE WARMING ON THE EMBRYONIC DEVELOPMENT OF THE OPISTHOBRANCH GASTROPOD STYLOCHEILUS STRIATUS
Anthropogenic increases in atmospheric CO2 compound the rates of long-term changes in the abiotic conditions of the Earth’s oceans. Because many physiological processes, including calcification rate, depend on these physical factors, there is mounting concern over how changes in temperature (T) and...
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ftcdlib:qt3977m4tq 2023-05-15T17:50:46+02:00 THE EFFECTS OF OCEAN ACIDIFICATION AND SEA SURFACE WARMING ON THE EMBRYONIC DEVELOPMENT OF THE OPISTHOBRANCH GASTROPOD STYLOCHEILUS STRIATUS Allen, Trevor Riley 2012-12-17 application/pdf http://www.escholarship.org/uc/item/3977m4tq english eng eScholarship, University of California qt3977m4tq http://www.escholarship.org/uc/item/3977m4tq Attribution-NonCommercial-ShareAlike (CC BY-NC-SA): http://creativecommons.org/licenses/by-nc-sa/3.0/ CC-BY-NC-SA Allen, Trevor Riley. (2012). THE EFFECTS OF OCEAN ACIDIFICATION AND SEA SURFACE WARMING ON THE EMBRYONIC DEVELOPMENT OF THE OPISTHOBRANCH GASTROPOD STYLOCHEILUS STRIATUS. UC Berkeley: UCB Moorea Class: Biology and Geomorphology of Tropical Islands. Retrieved from: http://www.escholarship.org/uc/item/3977m4tq Life Sciences Climate change ocean acidification sea surface warming marine gastropod embryonic development Stylocheilus Anaspidea Aplysiomorpha Mo’orea French Polynesia article 2012 ftcdlib 2016-04-02T19:02:38Z Anthropogenic increases in atmospheric CO2 compound the rates of long-term changes in the abiotic conditions of the Earth’s oceans. Because many physiological processes, including calcification rate, depend on these physical factors, there is mounting concern over how changes in temperature (T) and the CaCO3 saturation of seawater will affect marine organisms. These effects may be particularly relevant during development— many organisms produce protective calcified structures critical for pelagic dispersal and larval survivability. I investigated how unmitigated increases in oceanic pCO2 and temperature consistent with climate change predictions affect the embryonic development rate, hatching success, and veliger morphology of the opisthobranch gastropod,Stylocheilus striatus. Embryos were reared in four seawater treatments: 1) control (pH=8.02, T=27°C), 2) high-temperature (pH=8.02, T=31°C), 3) acidified(pH=7.67, T=27°C), 4) acidified high-temperature (pH=7.67, T=31°C). Development times increased under reduced pH conditions, but substantially decreased under high-temperature and acidifiedhigh-temperature treatments, with significant interaction between temperature and pH. The percentage of embryos that hatched into veligers significantly decreased in all three treatments (<70%reductionsin acidified high-temperature conditions).Larval shell size decreased in all three treatments— effects of acidification and temperature were synergistic, causing greater decreases in shell size with significant interaction in acidified high-temperature treatments. Additionally, there were observable deformities in the shell morphology of hatchlings incubated in decreased pH treatments— these deformities were exacerbated by temperature increases. Thus, my results indicate that oceanic conditions congruent with climate change predictions ca. 2100 suppress successful development in encapsulating gastropod embryos, potentially reducing their viability as pelagic larvae. Article in Journal/Newspaper Ocean acidification University of California: eScholarship |
institution |
Open Polar |
collection |
University of California: eScholarship |
op_collection_id |
ftcdlib |
language |
English |
topic |
Life Sciences Climate change ocean acidification sea surface warming marine gastropod embryonic development Stylocheilus Anaspidea Aplysiomorpha Mo’orea French Polynesia |
spellingShingle |
Life Sciences Climate change ocean acidification sea surface warming marine gastropod embryonic development Stylocheilus Anaspidea Aplysiomorpha Mo’orea French Polynesia Allen, Trevor Riley THE EFFECTS OF OCEAN ACIDIFICATION AND SEA SURFACE WARMING ON THE EMBRYONIC DEVELOPMENT OF THE OPISTHOBRANCH GASTROPOD STYLOCHEILUS STRIATUS |
topic_facet |
Life Sciences Climate change ocean acidification sea surface warming marine gastropod embryonic development Stylocheilus Anaspidea Aplysiomorpha Mo’orea French Polynesia |
description |
Anthropogenic increases in atmospheric CO2 compound the rates of long-term changes in the abiotic conditions of the Earth’s oceans. Because many physiological processes, including calcification rate, depend on these physical factors, there is mounting concern over how changes in temperature (T) and the CaCO3 saturation of seawater will affect marine organisms. These effects may be particularly relevant during development— many organisms produce protective calcified structures critical for pelagic dispersal and larval survivability. I investigated how unmitigated increases in oceanic pCO2 and temperature consistent with climate change predictions affect the embryonic development rate, hatching success, and veliger morphology of the opisthobranch gastropod,Stylocheilus striatus. Embryos were reared in four seawater treatments: 1) control (pH=8.02, T=27°C), 2) high-temperature (pH=8.02, T=31°C), 3) acidified(pH=7.67, T=27°C), 4) acidified high-temperature (pH=7.67, T=31°C). Development times increased under reduced pH conditions, but substantially decreased under high-temperature and acidifiedhigh-temperature treatments, with significant interaction between temperature and pH. The percentage of embryos that hatched into veligers significantly decreased in all three treatments (<70%reductionsin acidified high-temperature conditions).Larval shell size decreased in all three treatments— effects of acidification and temperature were synergistic, causing greater decreases in shell size with significant interaction in acidified high-temperature treatments. Additionally, there were observable deformities in the shell morphology of hatchlings incubated in decreased pH treatments— these deformities were exacerbated by temperature increases. Thus, my results indicate that oceanic conditions congruent with climate change predictions ca. 2100 suppress successful development in encapsulating gastropod embryos, potentially reducing their viability as pelagic larvae. |
format |
Article in Journal/Newspaper |
author |
Allen, Trevor Riley |
author_facet |
Allen, Trevor Riley |
author_sort |
Allen, Trevor Riley |
title |
THE EFFECTS OF OCEAN ACIDIFICATION AND SEA SURFACE WARMING ON THE EMBRYONIC DEVELOPMENT OF THE OPISTHOBRANCH GASTROPOD STYLOCHEILUS STRIATUS |
title_short |
THE EFFECTS OF OCEAN ACIDIFICATION AND SEA SURFACE WARMING ON THE EMBRYONIC DEVELOPMENT OF THE OPISTHOBRANCH GASTROPOD STYLOCHEILUS STRIATUS |
title_full |
THE EFFECTS OF OCEAN ACIDIFICATION AND SEA SURFACE WARMING ON THE EMBRYONIC DEVELOPMENT OF THE OPISTHOBRANCH GASTROPOD STYLOCHEILUS STRIATUS |
title_fullStr |
THE EFFECTS OF OCEAN ACIDIFICATION AND SEA SURFACE WARMING ON THE EMBRYONIC DEVELOPMENT OF THE OPISTHOBRANCH GASTROPOD STYLOCHEILUS STRIATUS |
title_full_unstemmed |
THE EFFECTS OF OCEAN ACIDIFICATION AND SEA SURFACE WARMING ON THE EMBRYONIC DEVELOPMENT OF THE OPISTHOBRANCH GASTROPOD STYLOCHEILUS STRIATUS |
title_sort |
effects of ocean acidification and sea surface warming on the embryonic development of the opisthobranch gastropod stylocheilus striatus |
publisher |
eScholarship, University of California |
publishDate |
2012 |
url |
http://www.escholarship.org/uc/item/3977m4tq |
genre |
Ocean acidification |
genre_facet |
Ocean acidification |
op_source |
Allen, Trevor Riley. (2012). THE EFFECTS OF OCEAN ACIDIFICATION AND SEA SURFACE WARMING ON THE EMBRYONIC DEVELOPMENT OF THE OPISTHOBRANCH GASTROPOD STYLOCHEILUS STRIATUS. UC Berkeley: UCB Moorea Class: Biology and Geomorphology of Tropical Islands. Retrieved from: http://www.escholarship.org/uc/item/3977m4tq |
op_relation |
qt3977m4tq http://www.escholarship.org/uc/item/3977m4tq |
op_rights |
Attribution-NonCommercial-ShareAlike (CC BY-NC-SA): http://creativecommons.org/licenses/by-nc-sa/3.0/ |
op_rightsnorm |
CC-BY-NC-SA |
_version_ |
1766157669204230144 |