Effect of ocean acidification on swimming of larval green urchins in flow

Many marine invertebrates have benthic adults with limited mobility and rely on planktonic larvae for dispersal. However, these planktonic stages are vulnerable to various environmental stressors, including those associated with ocean acidification (OA). Larval urchins have calcified skeletons suppo...

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Main Authors: Chan, Kit Yu Karen LIFS, Garcia, E., Dupont, Sam T.
Format: Conference Object
Language:English
Published: 2014
Subjects:
Online Access:http://repository.ust.hk/ir/Record/1783.1-67471
http://lbdiscover.ust.hk/uresolver?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rfr_id=info:sid/HKUST:SPI&rft.genre=article&rft.issn=&rft.volume=&rft.issue=&rft.date=2014&rft.spage=&rft.aulast=Chan&rft.aufirst=&rft.atitle=Effect%20of%20ocean%20acidification%20on%20swimming%20of%20larval%20green%20urchins%20in%20flow&rft.title=2014%20Ocean%20Sciences%20Meeting,%20Honolulu,%20Hawaii,%20USA,%2023-28%20February%202014
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spelling ftunivsthongkong:oai:repository.ust.hk:1783.1-67471 2023-05-15T17:50:16+02:00 Effect of ocean acidification on swimming of larval green urchins in flow Chan, Kit Yu Karen LIFS Garcia, E. Dupont, Sam T. 2014 http://repository.ust.hk/ir/Record/1783.1-67471 http://lbdiscover.ust.hk/uresolver?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rfr_id=info:sid/HKUST:SPI&rft.genre=article&rft.issn=&rft.volume=&rft.issue=&rft.date=2014&rft.spage=&rft.aulast=Chan&rft.aufirst=&rft.atitle=Effect%20of%20ocean%20acidification%20on%20swimming%20of%20larval%20green%20urchins%20in%20flow&rft.title=2014%20Ocean%20Sciences%20Meeting,%20Honolulu,%20Hawaii,%20USA,%2023-28%20February%202014 English eng http://repository.ust.hk/ir/Record/1783.1-67471 2014 Ocean Sciences Meeting, Honolulu, Hawaii, USA, 23-28 February 2014 http://lbdiscover.ust.hk/uresolver?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rfr_id=info:sid/HKUST:SPI&rft.genre=article&rft.issn=&rft.volume=&rft.issue=&rft.date=2014&rft.spage=&rft.aulast=Chan&rft.aufirst=&rft.atitle=Effect%20of%20ocean%20acidification%20on%20swimming%20of%20larval%20green%20urchins%20in%20flow&rft.title=2014%20Ocean%20Sciences%20Meeting,%20Honolulu,%20Hawaii,%20USA,%2023-28%20February%202014 Conference paper 2014 ftunivsthongkong 2019-09-03T18:22:32Z Many marine invertebrates have benthic adults with limited mobility and rely on planktonic larvae for dispersal. However, these planktonic stages are vulnerable to various environmental stressors, including those associated with ocean acidification (OA). Larval urchins have calcified skeletons supporting long ciliated arms used for feeding and swimming and previous studies demonstrated that OA affects their survival, physiology, growth, and morphology. Larval morphology imposes biomechanical constraints on ecological functions. For instance, changes in arm length would affect weight distribution, and hence, larval ability to swim upright in moving water. Given their small size, larval urchins often experience turbulence as shear. We exposed larval green urchin Strongylocentrotus droebachiensis to three pH levels (pH 8.1, 7.7, and 7.3) and quantified the impact on movement in vertical shear. Larval growth and overall shape differed between pH levels. Video motion analysis suggests that OA affects larval swimming speed in still water and tilt in flow. Differences in larval orientation and movement in shear under OA conditions would have significant implication for larval distribution and transport, such that non-lethal impact OA would have population-level consequences. Conference Object Ocean acidification The Hong Kong University of Science and Technology: HKUST Institutional Repository
institution Open Polar
collection The Hong Kong University of Science and Technology: HKUST Institutional Repository
op_collection_id ftunivsthongkong
language English
description Many marine invertebrates have benthic adults with limited mobility and rely on planktonic larvae for dispersal. However, these planktonic stages are vulnerable to various environmental stressors, including those associated with ocean acidification (OA). Larval urchins have calcified skeletons supporting long ciliated arms used for feeding and swimming and previous studies demonstrated that OA affects their survival, physiology, growth, and morphology. Larval morphology imposes biomechanical constraints on ecological functions. For instance, changes in arm length would affect weight distribution, and hence, larval ability to swim upright in moving water. Given their small size, larval urchins often experience turbulence as shear. We exposed larval green urchin Strongylocentrotus droebachiensis to three pH levels (pH 8.1, 7.7, and 7.3) and quantified the impact on movement in vertical shear. Larval growth and overall shape differed between pH levels. Video motion analysis suggests that OA affects larval swimming speed in still water and tilt in flow. Differences in larval orientation and movement in shear under OA conditions would have significant implication for larval distribution and transport, such that non-lethal impact OA would have population-level consequences.
format Conference Object
author Chan, Kit Yu Karen LIFS
Garcia, E.
Dupont, Sam T.
spellingShingle Chan, Kit Yu Karen LIFS
Garcia, E.
Dupont, Sam T.
Effect of ocean acidification on swimming of larval green urchins in flow
author_facet Chan, Kit Yu Karen LIFS
Garcia, E.
Dupont, Sam T.
author_sort Chan, Kit Yu Karen LIFS
title Effect of ocean acidification on swimming of larval green urchins in flow
title_short Effect of ocean acidification on swimming of larval green urchins in flow
title_full Effect of ocean acidification on swimming of larval green urchins in flow
title_fullStr Effect of ocean acidification on swimming of larval green urchins in flow
title_full_unstemmed Effect of ocean acidification on swimming of larval green urchins in flow
title_sort effect of ocean acidification on swimming of larval green urchins in flow
publishDate 2014
url http://repository.ust.hk/ir/Record/1783.1-67471
http://lbdiscover.ust.hk/uresolver?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rfr_id=info:sid/HKUST:SPI&rft.genre=article&rft.issn=&rft.volume=&rft.issue=&rft.date=2014&rft.spage=&rft.aulast=Chan&rft.aufirst=&rft.atitle=Effect%20of%20ocean%20acidification%20on%20swimming%20of%20larval%20green%20urchins%20in%20flow&rft.title=2014%20Ocean%20Sciences%20Meeting,%20Honolulu,%20Hawaii,%20USA,%2023-28%20February%202014
genre Ocean acidification
genre_facet Ocean acidification
op_relation http://repository.ust.hk/ir/Record/1783.1-67471
2014 Ocean Sciences Meeting, Honolulu, Hawaii, USA, 23-28 February 2014
http://lbdiscover.ust.hk/uresolver?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rfr_id=info:sid/HKUST:SPI&rft.genre=article&rft.issn=&rft.volume=&rft.issue=&rft.date=2014&rft.spage=&rft.aulast=Chan&rft.aufirst=&rft.atitle=Effect%20of%20ocean%20acidification%20on%20swimming%20of%20larval%20green%20urchins%20in%20flow&rft.title=2014%20Ocean%20Sciences%20Meeting,%20Honolulu,%20Hawaii,%20USA,%2023-28%20February%202014
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