The Effect of Increasing Acidity and Temperature On An Early Life Stage Crustacean, Callinectes Sapidus
The Atlantic blue crab is an important keystone and commercial species within the Chesapeake Bay, with current management practices successfully maintaining the population. However, future environmental conditions caused by increasing carbon dioxide from anthropogenic sources may impact these gains....
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ftdatacite:10.18130/v3-qnpq-eh96 2023-05-15T17:51:28+02:00 The Effect of Increasing Acidity and Temperature On An Early Life Stage Crustacean, Callinectes Sapidus Fantasia-Buscher, Christina 2020 https://dx.doi.org/10.18130/v3-qnpq-eh96 https://libraetd.lib.virginia.edu/public_view/qz20st37f unknown University of Virginia All rights reserved (no additional license for public reuse) early life stage crustacean ocean acidification Callinectes sapidus Thesis Text Dissertation thesis 2020 ftdatacite https://doi.org/10.18130/v3-qnpq-eh96 2021-11-05T12:55:41Z The Atlantic blue crab is an important keystone and commercial species within the Chesapeake Bay, with current management practices successfully maintaining the population. However, future environmental conditions caused by increasing carbon dioxide from anthropogenic sources may impact these gains. In other decapods early life stages are most vulnerable to acidification, however little research has explored the response of larval blue crabs. With continued absorption of excess CO 2 into surface waters, the pH of these waters continue to decrease and may affect blue crab larval development. I determined the effects of increased acidity (pH 7.8, 7.4, & 6.8) on morphology, mortality, development, and protein and lipid content of embryos and larval blue crabs over a period of 16 and 7 days, respectively. Embryonic development is delayed, whereas larval survival and lipid content declines with increasing acidity. Morphology and protein content were unaffected in larvae, with the exception of shortened dorsal spine length at the highest acidity. Combining increased temperatures (23, 26, & 28 C) with acidification caused further declines in survival and lipid content, with new losses in protein content and swimming activity. No changes were observed in morphology or calcium content. Unless blue crabs are able to adapt at a rapid rate, these results denote negative outcomes for future populations and illustrate the need to explore mitigation strategies along with continued studies on adaptation. Thesis Ocean acidification DataCite Metadata Store (German National Library of Science and Technology) |
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early life stage crustacean ocean acidification Callinectes sapidus |
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early life stage crustacean ocean acidification Callinectes sapidus Fantasia-Buscher, Christina The Effect of Increasing Acidity and Temperature On An Early Life Stage Crustacean, Callinectes Sapidus |
topic_facet |
early life stage crustacean ocean acidification Callinectes sapidus |
description |
The Atlantic blue crab is an important keystone and commercial species within the Chesapeake Bay, with current management practices successfully maintaining the population. However, future environmental conditions caused by increasing carbon dioxide from anthropogenic sources may impact these gains. In other decapods early life stages are most vulnerable to acidification, however little research has explored the response of larval blue crabs. With continued absorption of excess CO 2 into surface waters, the pH of these waters continue to decrease and may affect blue crab larval development. I determined the effects of increased acidity (pH 7.8, 7.4, & 6.8) on morphology, mortality, development, and protein and lipid content of embryos and larval blue crabs over a period of 16 and 7 days, respectively. Embryonic development is delayed, whereas larval survival and lipid content declines with increasing acidity. Morphology and protein content were unaffected in larvae, with the exception of shortened dorsal spine length at the highest acidity. Combining increased temperatures (23, 26, & 28 C) with acidification caused further declines in survival and lipid content, with new losses in protein content and swimming activity. No changes were observed in morphology or calcium content. Unless blue crabs are able to adapt at a rapid rate, these results denote negative outcomes for future populations and illustrate the need to explore mitigation strategies along with continued studies on adaptation. |
format |
Thesis |
author |
Fantasia-Buscher, Christina |
author_facet |
Fantasia-Buscher, Christina |
author_sort |
Fantasia-Buscher, Christina |
title |
The Effect of Increasing Acidity and Temperature On An Early Life Stage Crustacean, Callinectes Sapidus |
title_short |
The Effect of Increasing Acidity and Temperature On An Early Life Stage Crustacean, Callinectes Sapidus |
title_full |
The Effect of Increasing Acidity and Temperature On An Early Life Stage Crustacean, Callinectes Sapidus |
title_fullStr |
The Effect of Increasing Acidity and Temperature On An Early Life Stage Crustacean, Callinectes Sapidus |
title_full_unstemmed |
The Effect of Increasing Acidity and Temperature On An Early Life Stage Crustacean, Callinectes Sapidus |
title_sort |
effect of increasing acidity and temperature on an early life stage crustacean, callinectes sapidus |
publisher |
University of Virginia |
publishDate |
2020 |
url |
https://dx.doi.org/10.18130/v3-qnpq-eh96 https://libraetd.lib.virginia.edu/public_view/qz20st37f |
genre |
Ocean acidification |
genre_facet |
Ocean acidification |
op_rights |
All rights reserved (no additional license for public reuse) |
op_doi |
https://doi.org/10.18130/v3-qnpq-eh96 |
_version_ |
1766158628792827904 |