Effects of Ocean Acidification on Swimming of Larval Urchins and Implications for Dispersal
Ocean acidification (OA), the reduction in pH associated with dissolution of atmospheric carbon dioxide, is threatening marine fauna. Often, the impact of acidification does not manifest as outright mortality but as sub-lethal effects; and these impacts can carry over from one developmental stage to...
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ftunivsthongkong:oai:repository.ust.hk:1783.1-79584 2023-05-15T17:50:24+02:00 Effects of Ocean Acidification on Swimming of Larval Urchins and Implications for Dispersal Chan, Kit Yu Karen 2015 http://repository.ust.hk/ir/Record/1783.1-79584 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=2015&rft.spage=&rft.aulast=Chan&rft.aufirst=Kit%20Yu%20Karen&rft.atitle=Effects%20of%20Ocean%20Acidification%20on%20Swimming%20of%20Larval%20Urchins%20and%20Implications%20for%20Dispersal&rft.title= English eng http://repository.ust.hk/ir/Record/1783.1-79584 145th Annual Meeting, American Fisheries Society, Portland, Oregon, 16-20 August 2015 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=2015&rft.spage=&rft.aulast=Chan&rft.aufirst=Kit%20Yu%20Karen&rft.atitle=Effects%20of%20Ocean%20Acidification%20on%20Swimming%20of%20Larval%20Urchins%20and%20Implications%20for%20Dispersal&rft.title= Conference paper 2015 ftunivsthongkong 2019-09-03T18:19:36Z Ocean acidification (OA), the reduction in pH associated with dissolution of atmospheric carbon dioxide, is threatening marine fauna. Often, the impact of acidification does not manifest as outright mortality but as sub-lethal effects; and these impacts can carry over from one developmental stage to another. One such sublethal effect is altered swimming behaviors through changes in overall morphology and hence biomechanics, metabolic activities, or neurotransmissions. Larvae of marine invertebrates play a key role in dispersal and swim to adjust their vertical positions, which shapes the environmental conditions, e.g., temperature, food abundance, and advective currents, they encounter. We tested the effect of acidification on swimming behaviors of larval urchins, Strongylocentrotus purpuratus and S. droebachiensis, reared under elevated pCO 2 levels in both still and moving water using non-invasive video tracking. Despite reduced growth rate, swimming performance, measured by vertical velocity, was not affected by acidification. This observation together with changes in overall shape highlights developmental and behavioral plasticity during acute exposure. We further tested if such swimming-size decoupling would affect transport and recruitment success with an idealized hydrodynamic model. Our results suggest impacts of OA on early life stages, though sublethal, could have significant implications for population dynamics. Conference Object Ocean acidification The Hong Kong University of Science and Technology: HKUST Institutional Repository |
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Open Polar |
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The Hong Kong University of Science and Technology: HKUST Institutional Repository |
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ftunivsthongkong |
language |
English |
description |
Ocean acidification (OA), the reduction in pH associated with dissolution of atmospheric carbon dioxide, is threatening marine fauna. Often, the impact of acidification does not manifest as outright mortality but as sub-lethal effects; and these impacts can carry over from one developmental stage to another. One such sublethal effect is altered swimming behaviors through changes in overall morphology and hence biomechanics, metabolic activities, or neurotransmissions. Larvae of marine invertebrates play a key role in dispersal and swim to adjust their vertical positions, which shapes the environmental conditions, e.g., temperature, food abundance, and advective currents, they encounter. We tested the effect of acidification on swimming behaviors of larval urchins, Strongylocentrotus purpuratus and S. droebachiensis, reared under elevated pCO 2 levels in both still and moving water using non-invasive video tracking. Despite reduced growth rate, swimming performance, measured by vertical velocity, was not affected by acidification. This observation together with changes in overall shape highlights developmental and behavioral plasticity during acute exposure. We further tested if such swimming-size decoupling would affect transport and recruitment success with an idealized hydrodynamic model. Our results suggest impacts of OA on early life stages, though sublethal, could have significant implications for population dynamics. |
format |
Conference Object |
author |
Chan, Kit Yu Karen |
spellingShingle |
Chan, Kit Yu Karen Effects of Ocean Acidification on Swimming of Larval Urchins and Implications for Dispersal |
author_facet |
Chan, Kit Yu Karen |
author_sort |
Chan, Kit Yu Karen |
title |
Effects of Ocean Acidification on Swimming of Larval Urchins and Implications for Dispersal |
title_short |
Effects of Ocean Acidification on Swimming of Larval Urchins and Implications for Dispersal |
title_full |
Effects of Ocean Acidification on Swimming of Larval Urchins and Implications for Dispersal |
title_fullStr |
Effects of Ocean Acidification on Swimming of Larval Urchins and Implications for Dispersal |
title_full_unstemmed |
Effects of Ocean Acidification on Swimming of Larval Urchins and Implications for Dispersal |
title_sort |
effects of ocean acidification on swimming of larval urchins and implications for dispersal |
publishDate |
2015 |
url |
http://repository.ust.hk/ir/Record/1783.1-79584 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=2015&rft.spage=&rft.aulast=Chan&rft.aufirst=Kit%20Yu%20Karen&rft.atitle=Effects%20of%20Ocean%20Acidification%20on%20Swimming%20of%20Larval%20Urchins%20and%20Implications%20for%20Dispersal&rft.title= |
genre |
Ocean acidification |
genre_facet |
Ocean acidification |
op_relation |
http://repository.ust.hk/ir/Record/1783.1-79584 145th Annual Meeting, American Fisheries Society, Portland, Oregon, 16-20 August 2015 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=2015&rft.spage=&rft.aulast=Chan&rft.aufirst=Kit%20Yu%20Karen&rft.atitle=Effects%20of%20Ocean%20Acidification%20on%20Swimming%20of%20Larval%20Urchins%20and%20Implications%20for%20Dispersal&rft.title= |
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1766157121408204800 |