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Phenology in the deep sea: seasonal and tidal feeding rhythms in a keystone octocoral

Biological rhythms are widely known in terrestrial and marine systems, where the behaviour or function of organisms may be tuned to environmental variation over periods from minutes to seasons or longer. Although well characterized in coastal environments, phenology remains poorly understood in the...

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Autores principales: Girard, Fanny, Litvin, Steven Y., Sherman, Alana, McGill, Paul, Gannon, Amanda, Lovera, Christopher, DeVogelaere, Andrew, Burton, Erica, Graves, Dale, Schnittger, Aaron, Barry, Jim
Formato: Online Artículo Texto
Lenguaje:English
Publicado: The Royal Society 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9579760/
https://www.ncbi.nlm.nih.gov/pubmed/36259212
http://dx.doi.org/10.1098/rspb.2022.1033
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author Girard, Fanny
Litvin, Steven Y.
Sherman, Alana
McGill, Paul
Gannon, Amanda
Lovera, Christopher
DeVogelaere, Andrew
Burton, Erica
Graves, Dale
Schnittger, Aaron
Barry, Jim
author_facet Girard, Fanny
Litvin, Steven Y.
Sherman, Alana
McGill, Paul
Gannon, Amanda
Lovera, Christopher
DeVogelaere, Andrew
Burton, Erica
Graves, Dale
Schnittger, Aaron
Barry, Jim
author_sort Girard, Fanny
collection PubMed
description Biological rhythms are widely known in terrestrial and marine systems, where the behaviour or function of organisms may be tuned to environmental variation over periods from minutes to seasons or longer. Although well characterized in coastal environments, phenology remains poorly understood in the deep sea. Here we characterized intra-annual dynamics of feeding activity for the deep-sea octocoral Paragorgia arborea. Hourly changes in polyp activity were quantified using a time-lapse camera deployed for a year on Sur Ridge (1230 m depth; Northeast Pacific). The relationship between feeding and environmental variables, including surface primary production, temperature, acoustic backscatter, current speed and direction, was evaluated. Feeding activity was highly seasonal, with a dormancy period identified between January and early April, reflecting seasonal changes in food availability as suggested by primary production and acoustic backscatter data. Moreover, feeding varied with tides, which likely affected food delivery through cyclic oscillation in current speed and direction. This study provides the first evidence of behavioural rhythms in a coral species at depth greater than 1 km. Information on the feeding biology of this cosmopolitan deep-sea octocoral will contribute to a better understanding of how future environmental change may affect deep-sea coral communities and the ecosystem services they provide.
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spelling pubmed-95797602022-10-28 Phenology in the deep sea: seasonal and tidal feeding rhythms in a keystone octocoral Girard, Fanny Litvin, Steven Y. Sherman, Alana McGill, Paul Gannon, Amanda Lovera, Christopher DeVogelaere, Andrew Burton, Erica Graves, Dale Schnittger, Aaron Barry, Jim Proc Biol Sci Ecology Biological rhythms are widely known in terrestrial and marine systems, where the behaviour or function of organisms may be tuned to environmental variation over periods from minutes to seasons or longer. Although well characterized in coastal environments, phenology remains poorly understood in the deep sea. Here we characterized intra-annual dynamics of feeding activity for the deep-sea octocoral Paragorgia arborea. Hourly changes in polyp activity were quantified using a time-lapse camera deployed for a year on Sur Ridge (1230 m depth; Northeast Pacific). The relationship between feeding and environmental variables, including surface primary production, temperature, acoustic backscatter, current speed and direction, was evaluated. Feeding activity was highly seasonal, with a dormancy period identified between January and early April, reflecting seasonal changes in food availability as suggested by primary production and acoustic backscatter data. Moreover, feeding varied with tides, which likely affected food delivery through cyclic oscillation in current speed and direction. This study provides the first evidence of behavioural rhythms in a coral species at depth greater than 1 km. Information on the feeding biology of this cosmopolitan deep-sea octocoral will contribute to a better understanding of how future environmental change may affect deep-sea coral communities and the ecosystem services they provide. The Royal Society 2022-10-26 2022-10-19 /pmc/articles/PMC9579760/ /pubmed/36259212 http://dx.doi.org/10.1098/rspb.2022.1033 Text en © 2022 The Authors. https://creativecommons.org/licenses/by/4.0/Published by the Royal Society under the terms of the Creative Commons Attribution License http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) , which permits unrestricted use, provided the original author and source are credited.
spellingShingle Ecology
Girard, Fanny
Litvin, Steven Y.
Sherman, Alana
McGill, Paul
Gannon, Amanda
Lovera, Christopher
DeVogelaere, Andrew
Burton, Erica
Graves, Dale
Schnittger, Aaron
Barry, Jim
Phenology in the deep sea: seasonal and tidal feeding rhythms in a keystone octocoral
title Phenology in the deep sea: seasonal and tidal feeding rhythms in a keystone octocoral
title_full Phenology in the deep sea: seasonal and tidal feeding rhythms in a keystone octocoral
title_fullStr Phenology in the deep sea: seasonal and tidal feeding rhythms in a keystone octocoral
title_full_unstemmed Phenology in the deep sea: seasonal and tidal feeding rhythms in a keystone octocoral
title_short Phenology in the deep sea: seasonal and tidal feeding rhythms in a keystone octocoral
title_sort phenology in the deep sea: seasonal and tidal feeding rhythms in a keystone octocoral
topic Ecology
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9579760/
https://www.ncbi.nlm.nih.gov/pubmed/36259212
http://dx.doi.org/10.1098/rspb.2022.1033
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