Foraging in the darkness of the southern ocean: influence of bioluminescence on a deep diving predator.
International audience How non-echolocating deep diving marine predators locate their prey while foraging remains mostly unknown. Female southern elephant seals (SES) (Mirounga leonina) have vision adapted to low intensity light with a peak sensitivity at 485 nm. This matches the wavelength of biolu...
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fttriple:oai:gotriple.eu:10670/1.mrwfsq 2023-05-15T16:05:42+02:00 Foraging in the darkness of the southern ocean: influence of bioluminescence on a deep diving predator. Vacquié-Garcia, Jade Royer, François Dragon, Anne-Cécile Viviant, Morgane Bailleul, Frédéric Guinet, Christophe Centre d'études biologiques de Chizé (CEBC) Centre National de la Recherche Scientifique (CNRS) Collecte Localisation Satellites (CLS) Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Centre National d'Études Spatiales Toulouse (CNES) 2012-01-01 https://doi.org/10.1371/journal.pone.0043565 https://hal.archives-ouvertes.fr/hal-00741872 en eng HAL CCSD Public Library of Science hal-00741872 doi:10.1371/journal.pone.0043565 PUBMED: 22952706 10670/1.mrwfsq https://hal.archives-ouvertes.fr/hal-00741872 undefined Hyper Article en Ligne - Sciences de l'Homme et de la Société ISSN: 1932-6203 EISSN: 1932-6203 PLoS ONE PLoS ONE, Public Library of Science, 2012, 7 (8), pp.e43565. ⟨10.1371/journal.pone.0043565⟩ envir geo Journal Article https://vocabularies.coar-repositories.org/resource_types/c_6501/ 2012 fttriple https://doi.org/10.1371/journal.pone.0043565 2023-01-22T18:14:46Z International audience How non-echolocating deep diving marine predators locate their prey while foraging remains mostly unknown. Female southern elephant seals (SES) (Mirounga leonina) have vision adapted to low intensity light with a peak sensitivity at 485 nm. This matches the wavelength of bioluminescence produced by a large range of marine organisms including myctophid fish, SES's main prey. In this study, we investigated whether bioluminescence provides an accurate estimate of prey occurrence for SES. To do so, four SES were satellite-tracked during their post-breeding foraging trip and were equipped with Time-Depth-Recorders that also recorded light levels every two seconds. A total of 3386 dives were processed through a light-treatment model that detected light events higher than ambient level, i.e. bioluminescence events. The number of bioluminescence events was related to an index of foraging intensity for SES dives deep enough to avoid the influence of natural ambient light. The occurrence of bioluminescence was found to be negatively related to depth both at night and day. Foraging intensity was also positively related to bioluminescence both during day and night. This result suggests that bioluminescence likely provides SES with valuable indications of prey occurrence and might be a key element in predator-prey interactions in deep-dark marine environments. Article in Journal/Newspaper Elephant Seals Mirounga leonina Southern Elephant Seals Southern Ocean Unknown Southern Ocean PLoS ONE 7 8 e43565 |
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envir geo Vacquié-Garcia, Jade Royer, François Dragon, Anne-Cécile Viviant, Morgane Bailleul, Frédéric Guinet, Christophe Foraging in the darkness of the southern ocean: influence of bioluminescence on a deep diving predator. |
topic_facet |
envir geo |
description |
International audience How non-echolocating deep diving marine predators locate their prey while foraging remains mostly unknown. Female southern elephant seals (SES) (Mirounga leonina) have vision adapted to low intensity light with a peak sensitivity at 485 nm. This matches the wavelength of bioluminescence produced by a large range of marine organisms including myctophid fish, SES's main prey. In this study, we investigated whether bioluminescence provides an accurate estimate of prey occurrence for SES. To do so, four SES were satellite-tracked during their post-breeding foraging trip and were equipped with Time-Depth-Recorders that also recorded light levels every two seconds. A total of 3386 dives were processed through a light-treatment model that detected light events higher than ambient level, i.e. bioluminescence events. The number of bioluminescence events was related to an index of foraging intensity for SES dives deep enough to avoid the influence of natural ambient light. The occurrence of bioluminescence was found to be negatively related to depth both at night and day. Foraging intensity was also positively related to bioluminescence both during day and night. This result suggests that bioluminescence likely provides SES with valuable indications of prey occurrence and might be a key element in predator-prey interactions in deep-dark marine environments. |
author2 |
Centre d'études biologiques de Chizé (CEBC) Centre National de la Recherche Scientifique (CNRS) Collecte Localisation Satellites (CLS) Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Centre National d'Études Spatiales Toulouse (CNES) |
format |
Article in Journal/Newspaper |
author |
Vacquié-Garcia, Jade Royer, François Dragon, Anne-Cécile Viviant, Morgane Bailleul, Frédéric Guinet, Christophe |
author_facet |
Vacquié-Garcia, Jade Royer, François Dragon, Anne-Cécile Viviant, Morgane Bailleul, Frédéric Guinet, Christophe |
author_sort |
Vacquié-Garcia, Jade |
title |
Foraging in the darkness of the southern ocean: influence of bioluminescence on a deep diving predator. |
title_short |
Foraging in the darkness of the southern ocean: influence of bioluminescence on a deep diving predator. |
title_full |
Foraging in the darkness of the southern ocean: influence of bioluminescence on a deep diving predator. |
title_fullStr |
Foraging in the darkness of the southern ocean: influence of bioluminescence on a deep diving predator. |
title_full_unstemmed |
Foraging in the darkness of the southern ocean: influence of bioluminescence on a deep diving predator. |
title_sort |
foraging in the darkness of the southern ocean: influence of bioluminescence on a deep diving predator. |
publisher |
HAL CCSD |
publishDate |
2012 |
url |
https://doi.org/10.1371/journal.pone.0043565 https://hal.archives-ouvertes.fr/hal-00741872 |
geographic |
Southern Ocean |
geographic_facet |
Southern Ocean |
genre |
Elephant Seals Mirounga leonina Southern Elephant Seals Southern Ocean |
genre_facet |
Elephant Seals Mirounga leonina Southern Elephant Seals Southern Ocean |
op_source |
Hyper Article en Ligne - Sciences de l'Homme et de la Société ISSN: 1932-6203 EISSN: 1932-6203 PLoS ONE PLoS ONE, Public Library of Science, 2012, 7 (8), pp.e43565. ⟨10.1371/journal.pone.0043565⟩ |
op_relation |
hal-00741872 doi:10.1371/journal.pone.0043565 PUBMED: 22952706 10670/1.mrwfsq https://hal.archives-ouvertes.fr/hal-00741872 |
op_rights |
undefined |
op_doi |
https://doi.org/10.1371/journal.pone.0043565 |
container_title |
PLoS ONE |
container_volume |
7 |
container_issue |
8 |
container_start_page |
e43565 |
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