Behavior of Brooded Coral Larvae in Response to Elevated pCO2
Elevated pCO2 threatens coral reefs through impaired calcification. However, the extent to which elevated pCO2 affects the distribution of the pelagic larvae of scleractinian corals, and how this may be interpreted in the context of ocean acidification (OA), remains unknown. We tested the hypothesis...
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ftdoajarticles:oai:doaj.org/article:75b2fdd35cdd4bbaaeb14daac19944d9 2023-05-15T17:51:05+02:00 Behavior of Brooded Coral Larvae in Response to Elevated pCO2 Jessica L. Bergman Saki Harii Haruko Kurihara Peter J. Edmunds 2018-02-01T00:00:00Z https://doi.org/10.3389/fmars.2018.00051 https://doaj.org/article/75b2fdd35cdd4bbaaeb14daac19944d9 EN eng Frontiers Media S.A. http://journal.frontiersin.org/article/10.3389/fmars.2018.00051/full https://doaj.org/toc/2296-7745 2296-7745 doi:10.3389/fmars.2018.00051 https://doaj.org/article/75b2fdd35cdd4bbaaeb14daac19944d9 Frontiers in Marine Science, Vol 5 (2018) ocean acidification corals Pocillopora damicornis brooded larvae behavior Science Q General. Including nature conservation geographical distribution QH1-199.5 article 2018 ftdoajarticles https://doi.org/10.3389/fmars.2018.00051 2022-12-31T09:40:57Z Elevated pCO2 threatens coral reefs through impaired calcification. However, the extent to which elevated pCO2 affects the distribution of the pelagic larvae of scleractinian corals, and how this may be interpreted in the context of ocean acidification (OA), remains unknown. We tested the hypothesis that elevated pCO2 affects one aspect of the behavior (i.e., motility) of brooded larvae from Pocillopora damicornis in Okinawa (Japan), and used UV-transparent tubes that were 68-cm long (45 mm ID) to incubate larvae on a shallow fringing reef. Replicate tubes were filled with seawater at ~400 μatm or ~1,000 μatm pCO2, stocked with 50 larvae each, and incubated vertically for 12 h with their midpoints at 0.3-m (shallow) or 3.3-m (deep) depth over a reef at 4-m depth. Larval behavior was assayed through their position in the tubes, which was scored in situ every 4 h beginning at 08:00 h. Lipid content was measured at the end of the experiment as a potential driver of behavior through its effects on larval buoyancy. Larval position in the tubes varied between depths and time of day at ~400 μatm pCO2 and ~1,000 μatm pCO2. At ~400 μatm, larvae moved toward the top (0.1-m) of shallow tubes throughout the day, but in the deep tubes they aggregated at the bottom of the tubes from 08:00 to 20:00 h. In contrast, larvae incubated at ~1,000 μatm pCO2 aggregated at the bottom of shallow tubes at 08:00 and 20:00 h, however in the deep tubes they were found in the bottom throughout the day. As lipid content of the larvae declined 23–25% at ~1,000 vs. ~400 μatm pCO2, loss of lipid may be a cause of modified larval behavior at high pCO2. If the pCO2-mediated changes in behavior and lipid content during this short experiment occur during longer exposures to high pCO2, our results suggest OA could alter the dispersal capacity of brooded coral larvae. Article in Journal/Newspaper Ocean acidification Directory of Open Access Journals: DOAJ Articles Frontiers in Marine Science 5 |
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Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
ocean acidification corals Pocillopora damicornis brooded larvae behavior Science Q General. Including nature conservation geographical distribution QH1-199.5 |
spellingShingle |
ocean acidification corals Pocillopora damicornis brooded larvae behavior Science Q General. Including nature conservation geographical distribution QH1-199.5 Jessica L. Bergman Saki Harii Haruko Kurihara Peter J. Edmunds Behavior of Brooded Coral Larvae in Response to Elevated pCO2 |
topic_facet |
ocean acidification corals Pocillopora damicornis brooded larvae behavior Science Q General. Including nature conservation geographical distribution QH1-199.5 |
description |
Elevated pCO2 threatens coral reefs through impaired calcification. However, the extent to which elevated pCO2 affects the distribution of the pelagic larvae of scleractinian corals, and how this may be interpreted in the context of ocean acidification (OA), remains unknown. We tested the hypothesis that elevated pCO2 affects one aspect of the behavior (i.e., motility) of brooded larvae from Pocillopora damicornis in Okinawa (Japan), and used UV-transparent tubes that were 68-cm long (45 mm ID) to incubate larvae on a shallow fringing reef. Replicate tubes were filled with seawater at ~400 μatm or ~1,000 μatm pCO2, stocked with 50 larvae each, and incubated vertically for 12 h with their midpoints at 0.3-m (shallow) or 3.3-m (deep) depth over a reef at 4-m depth. Larval behavior was assayed through their position in the tubes, which was scored in situ every 4 h beginning at 08:00 h. Lipid content was measured at the end of the experiment as a potential driver of behavior through its effects on larval buoyancy. Larval position in the tubes varied between depths and time of day at ~400 μatm pCO2 and ~1,000 μatm pCO2. At ~400 μatm, larvae moved toward the top (0.1-m) of shallow tubes throughout the day, but in the deep tubes they aggregated at the bottom of the tubes from 08:00 to 20:00 h. In contrast, larvae incubated at ~1,000 μatm pCO2 aggregated at the bottom of shallow tubes at 08:00 and 20:00 h, however in the deep tubes they were found in the bottom throughout the day. As lipid content of the larvae declined 23–25% at ~1,000 vs. ~400 μatm pCO2, loss of lipid may be a cause of modified larval behavior at high pCO2. If the pCO2-mediated changes in behavior and lipid content during this short experiment occur during longer exposures to high pCO2, our results suggest OA could alter the dispersal capacity of brooded coral larvae. |
format |
Article in Journal/Newspaper |
author |
Jessica L. Bergman Saki Harii Haruko Kurihara Peter J. Edmunds |
author_facet |
Jessica L. Bergman Saki Harii Haruko Kurihara Peter J. Edmunds |
author_sort |
Jessica L. Bergman |
title |
Behavior of Brooded Coral Larvae in Response to Elevated pCO2 |
title_short |
Behavior of Brooded Coral Larvae in Response to Elevated pCO2 |
title_full |
Behavior of Brooded Coral Larvae in Response to Elevated pCO2 |
title_fullStr |
Behavior of Brooded Coral Larvae in Response to Elevated pCO2 |
title_full_unstemmed |
Behavior of Brooded Coral Larvae in Response to Elevated pCO2 |
title_sort |
behavior of brooded coral larvae in response to elevated pco2 |
publisher |
Frontiers Media S.A. |
publishDate |
2018 |
url |
https://doi.org/10.3389/fmars.2018.00051 https://doaj.org/article/75b2fdd35cdd4bbaaeb14daac19944d9 |
genre |
Ocean acidification |
genre_facet |
Ocean acidification |
op_source |
Frontiers in Marine Science, Vol 5 (2018) |
op_relation |
http://journal.frontiersin.org/article/10.3389/fmars.2018.00051/full https://doaj.org/toc/2296-7745 2296-7745 doi:10.3389/fmars.2018.00051 https://doaj.org/article/75b2fdd35cdd4bbaaeb14daac19944d9 |
op_doi |
https://doi.org/10.3389/fmars.2018.00051 |
container_title |
Frontiers in Marine Science |
container_volume |
5 |
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1766158096362635264 |