The interactive effects of ocean acidification, food availability, and source location on the growth and physiology of the California mussel
Research shows ocean acidification (OA) can have largely negative impacts on marine organisms and ecosystems. Prior laboratory studies show that shelled marine invertebrates (e.g., molluscs) exhibit reduced growth rates and weaker shells when experiencing OA-related stress. However, populations of t...
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fthumboldtsudc:oai:digitalcommons.humboldt.edu:etd-1162 2023-05-15T17:50:19+02:00 The interactive effects of ocean acidification, food availability, and source location on the growth and physiology of the California mussel Man, Tharadet Daniel 2018-01-01T08:00:00Z application/pdf https://digitalcommons.humboldt.edu/etd/139 https://digitalcommons.humboldt.edu/cgi/viewcontent.cgi?article=1162&context=etd unknown Digital Commons @ Cal Poly Humboldt https://digitalcommons.humboldt.edu/etd/139 https://digitalcommons.humboldt.edu/cgi/viewcontent.cgi?article=1162&context=etd Cal Poly Humboldt theses and projects Mytilus californianus Ocean acidification Food availability Growth Physiology Upwelling Marine Biology text 2018 fthumboldtsudc 2023-04-09T04:50:22Z Research shows ocean acidification (OA) can have largely negative impacts on marine organisms and ecosystems. Prior laboratory studies show that shelled marine invertebrates (e.g., molluscs) exhibit reduced growth rates and weaker shells when experiencing OA-related stress. However, populations of the critical intertidal mussel species, Mytilus californianus, which experience naturally acidic water due to upwelling in certain parts of Northern California have been observed to have relatively stronger and thicker shells and higher growth rates than those that experience less frequent exposure to upwelling. To address the discrepancies between negative effects of OA exposure in the laboratory and seemingly positive effects off OA exposure in the field we collected juvenile mussels from four separate locations on the northern California coast that vary in exposure to upwelling-driven OA and raised them under ambient, constantly acidified, or intermittently acidified seawater conditions. Half of the mussels in each of the experimental treatments were given access to either ambient or elevated food concentrations. Although higher food availability increased shell and overall mussel growth, variation in mussel life-history traits among locations appears to be driven primarily by inherent differences (i.e. genetics or epigenetics). In particular, overall growth, soft tissue mass, and shell dissolution in mussels were associated with source-specific upwelling strength while adductor muscle mass along with shell growth and strength of mussels were associated with source-specific levels of predation risk. Oxygen consumption of mussels did not significantly vary among food, pH or source location treatments, suggesting that differences in growth rates were not due to differences in differences in metabolic or energetic efficiencies between individuals. Although not statistically significant, mussels from areas of high crab predation risk tended to survive crab attacks in the lab better than mussels from other areas. My data ... Text Ocean acidification Digital Commons@Humboldt State University (HSU) |
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Mytilus californianus Ocean acidification Food availability Growth Physiology Upwelling Marine Biology |
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Mytilus californianus Ocean acidification Food availability Growth Physiology Upwelling Marine Biology Man, Tharadet Daniel The interactive effects of ocean acidification, food availability, and source location on the growth and physiology of the California mussel |
topic_facet |
Mytilus californianus Ocean acidification Food availability Growth Physiology Upwelling Marine Biology |
description |
Research shows ocean acidification (OA) can have largely negative impacts on marine organisms and ecosystems. Prior laboratory studies show that shelled marine invertebrates (e.g., molluscs) exhibit reduced growth rates and weaker shells when experiencing OA-related stress. However, populations of the critical intertidal mussel species, Mytilus californianus, which experience naturally acidic water due to upwelling in certain parts of Northern California have been observed to have relatively stronger and thicker shells and higher growth rates than those that experience less frequent exposure to upwelling. To address the discrepancies between negative effects of OA exposure in the laboratory and seemingly positive effects off OA exposure in the field we collected juvenile mussels from four separate locations on the northern California coast that vary in exposure to upwelling-driven OA and raised them under ambient, constantly acidified, or intermittently acidified seawater conditions. Half of the mussels in each of the experimental treatments were given access to either ambient or elevated food concentrations. Although higher food availability increased shell and overall mussel growth, variation in mussel life-history traits among locations appears to be driven primarily by inherent differences (i.e. genetics or epigenetics). In particular, overall growth, soft tissue mass, and shell dissolution in mussels were associated with source-specific upwelling strength while adductor muscle mass along with shell growth and strength of mussels were associated with source-specific levels of predation risk. Oxygen consumption of mussels did not significantly vary among food, pH or source location treatments, suggesting that differences in growth rates were not due to differences in differences in metabolic or energetic efficiencies between individuals. Although not statistically significant, mussels from areas of high crab predation risk tended to survive crab attacks in the lab better than mussels from other areas. My data ... |
format |
Text |
author |
Man, Tharadet Daniel |
author_facet |
Man, Tharadet Daniel |
author_sort |
Man, Tharadet Daniel |
title |
The interactive effects of ocean acidification, food availability, and source location on the growth and physiology of the California mussel |
title_short |
The interactive effects of ocean acidification, food availability, and source location on the growth and physiology of the California mussel |
title_full |
The interactive effects of ocean acidification, food availability, and source location on the growth and physiology of the California mussel |
title_fullStr |
The interactive effects of ocean acidification, food availability, and source location on the growth and physiology of the California mussel |
title_full_unstemmed |
The interactive effects of ocean acidification, food availability, and source location on the growth and physiology of the California mussel |
title_sort |
interactive effects of ocean acidification, food availability, and source location on the growth and physiology of the california mussel |
publisher |
Digital Commons @ Cal Poly Humboldt |
publishDate |
2018 |
url |
https://digitalcommons.humboldt.edu/etd/139 https://digitalcommons.humboldt.edu/cgi/viewcontent.cgi?article=1162&context=etd |
genre |
Ocean acidification |
genre_facet |
Ocean acidification |
op_source |
Cal Poly Humboldt theses and projects |
op_relation |
https://digitalcommons.humboldt.edu/etd/139 https://digitalcommons.humboldt.edu/cgi/viewcontent.cgi?article=1162&context=etd |
_version_ |
1766157028632297472 |