Spies of the deep: an animal-borne active sonar and bioluminescence tag to characterise mesopelagic prey size and behaviour in distinct oceanographic domains
Abstract Mesopelagic fish, a central component of marine trophic networks, play a fundamental role in marine ecosystems. However, as they live in highly inaccessible environments, little information is currently available on their ecology, especially on the influence of oceanographic parameters on t...
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ftunivrochelle:oai:HAL:hal-04274783v1 2024-05-12T08:03:11+00:00 Spies of the deep: an animal-borne active sonar and bioluminescence tag to characterise mesopelagic prey size and behaviour in distinct oceanographic domains Chevallay, Mathilde Jeanniard Du Dot, Tiphaine Goulet, Pauline Fonvieille, Nadège Craig, Cassandra Picard, Baptiste Guinet, Christophe Centre d'Études Biologiques de Chizé - UMR 7372 (CEBC) La Rochelle Université (ULR)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE) Centre de Recherches sur la Cognition Animale - UMR5169 (CRCA) Université Toulouse III - Paul Sabatier (UT3) Université de Toulouse (UT)-Université de Toulouse (UT)-Centre National de la Recherche Scientifique (CNRS)-Centre de Biologie Intégrative (CBI) Université de Toulouse (UT)-Université de Toulouse (UT)-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS)-Toulouse Mind & Brain Institut (TMBI) Université Toulouse - Jean Jaurès (UT2J) Université de Toulouse (UT)-Université de Toulouse (UT)-Université Toulouse III - Paul Sabatier (UT3) Université de Toulouse (UT)-Université Toulouse - Jean Jaurès (UT2J) Université de Toulouse (UT)-Université Toulouse III - Paul Sabatier (UT3) Université de Toulouse (UT) 2023-11-08 https://hal.science/hal-04274783 https://doi.org/10.1101/2023.10.19.563065 en eng HAL CCSD info:eu-repo/semantics/altIdentifier/doi/10.1101/2023.10.19.563065 hal-04274783 https://hal.science/hal-04274783 BIORXIV: 2023.10.19.563065 doi:10.1101/2023.10.19.563065 https://hal.science/hal-04274783 2023 Southern elephant seals Mirounga leonina mesopelagic myctophids biologging [SDE]Environmental Sciences info:eu-repo/semantics/preprint Preprints, Working Papers, . 2023 ftunivrochelle https://doi.org/10.1101/2023.10.19.563065 2024-04-17T15:19:17Z Abstract Mesopelagic fish, a central component of marine trophic networks, play a fundamental role in marine ecosystems. However, as they live in highly inaccessible environments, little information is currently available on their ecology, especially on the influence of oceanographic parameters on their distribution. The emergence of biologging technologies has made it possible to use deep-diving predators as bio-samplers of their environment in under-sampled regions. In this work, we deployed an innovati ve miniaturised sonar tag that combines active acoustics with high-resolution GPS, pressure, movement and light sensors on Southern elephant seals, a deep-diving predator feeding on mesopelagic prey. Seals were also equipped with oceanographic tags, allowing us to explore the functional relationships between oceanographic parameters, distribution and ecology of mesopelagic prey targeted by seals and the seals’ foraging behaviour. We highlighted strong vertical differences in prey characteristics and behaviour, with larger, more evasive and less bioluminescent prey in deeper waters. Moreover, prey encountered in warmer waters were found deeper, were more evasive and displayed a more marked diel vertical migration behaviour compared to prey encountered in colder waters, suggesting that prey accessibility and characteristics differ according to oceanographic domains. This study highlights the usefulness of the sonar-bioluminescence tag to infer mesopelagic prey distribution and habitat when deployed on deep-diving predators such as elephant seals. Report Elephant Seals Mirounga leonina Southern Elephant Seals HAL - Université de La Rochelle |
institution |
Open Polar |
collection |
HAL - Université de La Rochelle |
op_collection_id |
ftunivrochelle |
language |
English |
topic |
Southern elephant seals Mirounga leonina mesopelagic myctophids biologging [SDE]Environmental Sciences |
spellingShingle |
Southern elephant seals Mirounga leonina mesopelagic myctophids biologging [SDE]Environmental Sciences Chevallay, Mathilde Jeanniard Du Dot, Tiphaine Goulet, Pauline Fonvieille, Nadège Craig, Cassandra Picard, Baptiste Guinet, Christophe Spies of the deep: an animal-borne active sonar and bioluminescence tag to characterise mesopelagic prey size and behaviour in distinct oceanographic domains |
topic_facet |
Southern elephant seals Mirounga leonina mesopelagic myctophids biologging [SDE]Environmental Sciences |
description |
Abstract Mesopelagic fish, a central component of marine trophic networks, play a fundamental role in marine ecosystems. However, as they live in highly inaccessible environments, little information is currently available on their ecology, especially on the influence of oceanographic parameters on their distribution. The emergence of biologging technologies has made it possible to use deep-diving predators as bio-samplers of their environment in under-sampled regions. In this work, we deployed an innovati ve miniaturised sonar tag that combines active acoustics with high-resolution GPS, pressure, movement and light sensors on Southern elephant seals, a deep-diving predator feeding on mesopelagic prey. Seals were also equipped with oceanographic tags, allowing us to explore the functional relationships between oceanographic parameters, distribution and ecology of mesopelagic prey targeted by seals and the seals’ foraging behaviour. We highlighted strong vertical differences in prey characteristics and behaviour, with larger, more evasive and less bioluminescent prey in deeper waters. Moreover, prey encountered in warmer waters were found deeper, were more evasive and displayed a more marked diel vertical migration behaviour compared to prey encountered in colder waters, suggesting that prey accessibility and characteristics differ according to oceanographic domains. This study highlights the usefulness of the sonar-bioluminescence tag to infer mesopelagic prey distribution and habitat when deployed on deep-diving predators such as elephant seals. |
author2 |
Centre d'Études Biologiques de Chizé - UMR 7372 (CEBC) La Rochelle Université (ULR)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE) Centre de Recherches sur la Cognition Animale - UMR5169 (CRCA) Université Toulouse III - Paul Sabatier (UT3) Université de Toulouse (UT)-Université de Toulouse (UT)-Centre National de la Recherche Scientifique (CNRS)-Centre de Biologie Intégrative (CBI) Université de Toulouse (UT)-Université de Toulouse (UT)-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS)-Toulouse Mind & Brain Institut (TMBI) Université Toulouse - Jean Jaurès (UT2J) Université de Toulouse (UT)-Université de Toulouse (UT)-Université Toulouse III - Paul Sabatier (UT3) Université de Toulouse (UT)-Université Toulouse - Jean Jaurès (UT2J) Université de Toulouse (UT)-Université Toulouse III - Paul Sabatier (UT3) Université de Toulouse (UT) |
format |
Report |
author |
Chevallay, Mathilde Jeanniard Du Dot, Tiphaine Goulet, Pauline Fonvieille, Nadège Craig, Cassandra Picard, Baptiste Guinet, Christophe |
author_facet |
Chevallay, Mathilde Jeanniard Du Dot, Tiphaine Goulet, Pauline Fonvieille, Nadège Craig, Cassandra Picard, Baptiste Guinet, Christophe |
author_sort |
Chevallay, Mathilde |
title |
Spies of the deep: an animal-borne active sonar and bioluminescence tag to characterise mesopelagic prey size and behaviour in distinct oceanographic domains |
title_short |
Spies of the deep: an animal-borne active sonar and bioluminescence tag to characterise mesopelagic prey size and behaviour in distinct oceanographic domains |
title_full |
Spies of the deep: an animal-borne active sonar and bioluminescence tag to characterise mesopelagic prey size and behaviour in distinct oceanographic domains |
title_fullStr |
Spies of the deep: an animal-borne active sonar and bioluminescence tag to characterise mesopelagic prey size and behaviour in distinct oceanographic domains |
title_full_unstemmed |
Spies of the deep: an animal-borne active sonar and bioluminescence tag to characterise mesopelagic prey size and behaviour in distinct oceanographic domains |
title_sort |
spies of the deep: an animal-borne active sonar and bioluminescence tag to characterise mesopelagic prey size and behaviour in distinct oceanographic domains |
publisher |
HAL CCSD |
publishDate |
2023 |
url |
https://hal.science/hal-04274783 https://doi.org/10.1101/2023.10.19.563065 |
genre |
Elephant Seals Mirounga leonina Southern Elephant Seals |
genre_facet |
Elephant Seals Mirounga leonina Southern Elephant Seals |
op_source |
https://hal.science/hal-04274783 2023 |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1101/2023.10.19.563065 hal-04274783 https://hal.science/hal-04274783 BIORXIV: 2023.10.19.563065 doi:10.1101/2023.10.19.563065 |
op_doi |
https://doi.org/10.1101/2023.10.19.563065 |
_version_ |
1798845289229975552 |