Repeat exposure to hypercapnic seawater modifies growth and oxidative status in a tolerant burrowing clam
Although low levels of thermal stress, irradiance and dietary restriction can have beneficial effects for many taxa, stress acclimation remains little studied in marine invertebrates, even though they are threatened by climate change stressors such as ocean acidification. To test the role of life-st...
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ftunivrhodeislan:oai:digitalcommons.uri.edu:bio_facpubs-1516 2024-09-15T18:27:56+00:00 Repeat exposure to hypercapnic seawater modifies growth and oxidative status in a tolerant burrowing clam Gurr, Samuel J. Trigg, Shelly A. Vadopalas, Brent Roberts, Steven B. Putnam, Hollie M. 2021-07-01T07:00:00Z https://digitalcommons.uri.edu/bio_facpubs/507 https://doi.org/10.1242/jeb.233932 unknown DigitalCommons@URI https://digitalcommons.uri.edu/bio_facpubs/507 doi:10.1242/jeb.233932 https://doi.org/10.1242/jeb.233932 Biological Sciences Faculty Publications Geoduck Ocean acidification Oxidative stress Phenotypic variation Stress acclimation text 2021 ftunivrhodeislan https://doi.org/10.1242/jeb.233932 2024-08-21T00:09:34Z Although low levels of thermal stress, irradiance and dietary restriction can have beneficial effects for many taxa, stress acclimation remains little studied in marine invertebrates, even though they are threatened by climate change stressors such as ocean acidification. To test the role of life-stage and stress-intensity dependence in eliciting enhanced tolerance under subsequent stress encounters, we initially conditioned pediveliger Pacific geoduck (Panopea generosa) larvae to ambient and moderately elevated PCO2 (920 μatm and 2800 μatm, respectively) for 110 days. Then, clams were exposed to ambient, moderate or severely elevated PCO2 (750, 2800 or 4900 μatm, respectively) for 7 days and, following 7 days in ambient conditions, a 7-day third exposure to ambient (970 μatm) or moderate PCO2 (3000 μatm). Initial conditioning to moderate PCO2 stress followed by second and third exposure to severe and moderate PCO2 stress increased respiration rate, organic biomass and shell size, suggesting a stress-intensity-dependent effect on energetics. Additionally, stressacclimated clams had lower antioxidant capacity compared with clams under ambient conditions, supporting the hypothesis that stress over postlarval-to-juvenile development affects oxidative status later in life. Time series and stress intensity-specific approaches can reveal life-stages and magnitudes of exposure, respectively, that may elicit beneficial phenotypic variation. Text Ocean acidification University of Rhode Island: DigitalCommons@URI Journal of Experimental Biology 224 13 |
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University of Rhode Island: DigitalCommons@URI |
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ftunivrhodeislan |
language |
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topic |
Geoduck Ocean acidification Oxidative stress Phenotypic variation Stress acclimation |
spellingShingle |
Geoduck Ocean acidification Oxidative stress Phenotypic variation Stress acclimation Gurr, Samuel J. Trigg, Shelly A. Vadopalas, Brent Roberts, Steven B. Putnam, Hollie M. Repeat exposure to hypercapnic seawater modifies growth and oxidative status in a tolerant burrowing clam |
topic_facet |
Geoduck Ocean acidification Oxidative stress Phenotypic variation Stress acclimation |
description |
Although low levels of thermal stress, irradiance and dietary restriction can have beneficial effects for many taxa, stress acclimation remains little studied in marine invertebrates, even though they are threatened by climate change stressors such as ocean acidification. To test the role of life-stage and stress-intensity dependence in eliciting enhanced tolerance under subsequent stress encounters, we initially conditioned pediveliger Pacific geoduck (Panopea generosa) larvae to ambient and moderately elevated PCO2 (920 μatm and 2800 μatm, respectively) for 110 days. Then, clams were exposed to ambient, moderate or severely elevated PCO2 (750, 2800 or 4900 μatm, respectively) for 7 days and, following 7 days in ambient conditions, a 7-day third exposure to ambient (970 μatm) or moderate PCO2 (3000 μatm). Initial conditioning to moderate PCO2 stress followed by second and third exposure to severe and moderate PCO2 stress increased respiration rate, organic biomass and shell size, suggesting a stress-intensity-dependent effect on energetics. Additionally, stressacclimated clams had lower antioxidant capacity compared with clams under ambient conditions, supporting the hypothesis that stress over postlarval-to-juvenile development affects oxidative status later in life. Time series and stress intensity-specific approaches can reveal life-stages and magnitudes of exposure, respectively, that may elicit beneficial phenotypic variation. |
format |
Text |
author |
Gurr, Samuel J. Trigg, Shelly A. Vadopalas, Brent Roberts, Steven B. Putnam, Hollie M. |
author_facet |
Gurr, Samuel J. Trigg, Shelly A. Vadopalas, Brent Roberts, Steven B. Putnam, Hollie M. |
author_sort |
Gurr, Samuel J. |
title |
Repeat exposure to hypercapnic seawater modifies growth and oxidative status in a tolerant burrowing clam |
title_short |
Repeat exposure to hypercapnic seawater modifies growth and oxidative status in a tolerant burrowing clam |
title_full |
Repeat exposure to hypercapnic seawater modifies growth and oxidative status in a tolerant burrowing clam |
title_fullStr |
Repeat exposure to hypercapnic seawater modifies growth and oxidative status in a tolerant burrowing clam |
title_full_unstemmed |
Repeat exposure to hypercapnic seawater modifies growth and oxidative status in a tolerant burrowing clam |
title_sort |
repeat exposure to hypercapnic seawater modifies growth and oxidative status in a tolerant burrowing clam |
publisher |
DigitalCommons@URI |
publishDate |
2021 |
url |
https://digitalcommons.uri.edu/bio_facpubs/507 https://doi.org/10.1242/jeb.233932 |
genre |
Ocean acidification |
genre_facet |
Ocean acidification |
op_source |
Biological Sciences Faculty Publications |
op_relation |
https://digitalcommons.uri.edu/bio_facpubs/507 doi:10.1242/jeb.233932 https://doi.org/10.1242/jeb.233932 |
op_doi |
https://doi.org/10.1242/jeb.233932 |
container_title |
Journal of Experimental Biology |
container_volume |
224 |
container_issue |
13 |
_version_ |
1810469220079632384 |