A First Individual-Based Model to Simulate Humpback Whale (Megaptera novaeangliae) Migrations at the Scale of the Global Ocean
International audience Whale migrations are poorly understood. Two competing hypotheses dominate the literature: 1. moving between feeding and breeding grounds increases population fitness, 2. migration is driven by dynamic environmental gradients, without consideration of fitness. Other hypotheses...
Published in: | Journal of Marine Science and Engineering |
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Main Authors: | , |
Other Authors: | , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
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HAL CCSD
2022
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Online Access: | https://hal.univ-brest.fr/hal-04199088 https://hal.univ-brest.fr/hal-04199088/document https://hal.univ-brest.fr/hal-04199088/file/jmse-10-01412-v2.pdf https://doi.org/10.3390/jmse10101412 |
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Open Polar |
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Institut national des sciences de l'Univers: HAL-INSU |
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language |
English |
topic |
baleen whales migration behavior bioenergetics individual-based modelling [SDV]Life Sciences [q-bio] |
spellingShingle |
baleen whales migration behavior bioenergetics individual-based modelling [SDV]Life Sciences [q-bio] Guarini, Jean-Marc Coston-Guarini, Jennifer A First Individual-Based Model to Simulate Humpback Whale (Megaptera novaeangliae) Migrations at the Scale of the Global Ocean |
topic_facet |
baleen whales migration behavior bioenergetics individual-based modelling [SDV]Life Sciences [q-bio] |
description |
International audience Whale migrations are poorly understood. Two competing hypotheses dominate the literature: 1. moving between feeding and breeding grounds increases population fitness, 2. migration is driven by dynamic environmental gradients, without consideration of fitness. Other hypotheses invoke communication and learned behaviors. In this article, their migration was investigated with a minimal individual-based model at the scale of the Global Ocean. Our aim is to test if global migration patterns can emerge from only the local, individual perception of environmental change. The humpback whale (Megaptera novaeangliae) meta-population is used as a case study. This species reproduces in 14 zones spread across tropical latitudes. From these breeding areas, humpback whales are observed to move to higher latitudes seasonally, where they feed, storing energy in their blubber, before returning to lower latitudes. For the model, we developed a simplified ethogram that conditions the individual activity. Then trajectories of 420 whales (30 per DPS) were simulated in two oceanic configurations. The first is a homogeneous ocean basin without landmasses and a constant depth of −1000 m. The second configuration used the actual Earth topography and coastlines. Results show that a global migration pattern can emerge from the movements of a set of individuals which perceive their environment only locally and without a pre-determined destination. This emerging property is the conjunction of individual behaviors and the bathymetric configuration of the Earth’s oceanic basins. Topographic constraints also maintain a limited connectivity between the 14 DPSs. An important consequence of invoking a local perception of environmental change is that the predicted routes are loxodromic and not orthodromic. In an ocean without landmasses, ecophysiological processes tended to over-estimate individual weights. With the actual ocean configuration, the excess weight gain was mitigated and also produced increased heterogeneity ... |
author2 |
Laboratoire des Sciences de l'Environnement Marin (LEMAR) (LEMAR) Institut de Recherche pour le Développement (IRD)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Université de Brest (UBO)-Institut Universitaire Européen de la Mer (IUEM) Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS) The Entangled Bank Laboratory (EB Lab) This research received no external funding |
format |
Article in Journal/Newspaper |
author |
Guarini, Jean-Marc Coston-Guarini, Jennifer |
author_facet |
Guarini, Jean-Marc Coston-Guarini, Jennifer |
author_sort |
Guarini, Jean-Marc |
title |
A First Individual-Based Model to Simulate Humpback Whale (Megaptera novaeangliae) Migrations at the Scale of the Global Ocean |
title_short |
A First Individual-Based Model to Simulate Humpback Whale (Megaptera novaeangliae) Migrations at the Scale of the Global Ocean |
title_full |
A First Individual-Based Model to Simulate Humpback Whale (Megaptera novaeangliae) Migrations at the Scale of the Global Ocean |
title_fullStr |
A First Individual-Based Model to Simulate Humpback Whale (Megaptera novaeangliae) Migrations at the Scale of the Global Ocean |
title_full_unstemmed |
A First Individual-Based Model to Simulate Humpback Whale (Megaptera novaeangliae) Migrations at the Scale of the Global Ocean |
title_sort |
first individual-based model to simulate humpback whale (megaptera novaeangliae) migrations at the scale of the global ocean |
publisher |
HAL CCSD |
publishDate |
2022 |
url |
https://hal.univ-brest.fr/hal-04199088 https://hal.univ-brest.fr/hal-04199088/document https://hal.univ-brest.fr/hal-04199088/file/jmse-10-01412-v2.pdf https://doi.org/10.3390/jmse10101412 |
genre |
baleen whales Humpback Whale Megaptera novaeangliae |
genre_facet |
baleen whales Humpback Whale Megaptera novaeangliae |
op_source |
ISSN: 2077-1312 Journal of Marine Science and Engineering https://hal.univ-brest.fr/hal-04199088 Journal of Marine Science and Engineering, 2022, 10 (10), pp.1412. ⟨10.3390/jmse10101412⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.3390/jmse10101412 hal-04199088 https://hal.univ-brest.fr/hal-04199088 https://hal.univ-brest.fr/hal-04199088/document https://hal.univ-brest.fr/hal-04199088/file/jmse-10-01412-v2.pdf doi:10.3390/jmse10101412 |
op_rights |
http://creativecommons.org/licenses/by/ info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.3390/jmse10101412 |
container_title |
Journal of Marine Science and Engineering |
container_volume |
10 |
container_issue |
10 |
container_start_page |
1412 |
_version_ |
1790598330249641984 |
spelling |
ftinsu:oai:HAL:hal-04199088v1 2024-02-11T10:02:24+01:00 A First Individual-Based Model to Simulate Humpback Whale (Megaptera novaeangliae) Migrations at the Scale of the Global Ocean Guarini, Jean-Marc Coston-Guarini, Jennifer Laboratoire des Sciences de l'Environnement Marin (LEMAR) (LEMAR) Institut de Recherche pour le Développement (IRD)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Université de Brest (UBO)-Institut Universitaire Européen de la Mer (IUEM) Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS) The Entangled Bank Laboratory (EB Lab) This research received no external funding 2022-10 https://hal.univ-brest.fr/hal-04199088 https://hal.univ-brest.fr/hal-04199088/document https://hal.univ-brest.fr/hal-04199088/file/jmse-10-01412-v2.pdf https://doi.org/10.3390/jmse10101412 en eng HAL CCSD MDPI info:eu-repo/semantics/altIdentifier/doi/10.3390/jmse10101412 hal-04199088 https://hal.univ-brest.fr/hal-04199088 https://hal.univ-brest.fr/hal-04199088/document https://hal.univ-brest.fr/hal-04199088/file/jmse-10-01412-v2.pdf doi:10.3390/jmse10101412 http://creativecommons.org/licenses/by/ info:eu-repo/semantics/OpenAccess ISSN: 2077-1312 Journal of Marine Science and Engineering https://hal.univ-brest.fr/hal-04199088 Journal of Marine Science and Engineering, 2022, 10 (10), pp.1412. ⟨10.3390/jmse10101412⟩ baleen whales migration behavior bioenergetics individual-based modelling [SDV]Life Sciences [q-bio] info:eu-repo/semantics/article Journal articles 2022 ftinsu https://doi.org/10.3390/jmse10101412 2024-01-24T17:26:12Z International audience Whale migrations are poorly understood. Two competing hypotheses dominate the literature: 1. moving between feeding and breeding grounds increases population fitness, 2. migration is driven by dynamic environmental gradients, without consideration of fitness. Other hypotheses invoke communication and learned behaviors. In this article, their migration was investigated with a minimal individual-based model at the scale of the Global Ocean. Our aim is to test if global migration patterns can emerge from only the local, individual perception of environmental change. The humpback whale (Megaptera novaeangliae) meta-population is used as a case study. This species reproduces in 14 zones spread across tropical latitudes. From these breeding areas, humpback whales are observed to move to higher latitudes seasonally, where they feed, storing energy in their blubber, before returning to lower latitudes. For the model, we developed a simplified ethogram that conditions the individual activity. Then trajectories of 420 whales (30 per DPS) were simulated in two oceanic configurations. The first is a homogeneous ocean basin without landmasses and a constant depth of −1000 m. The second configuration used the actual Earth topography and coastlines. Results show that a global migration pattern can emerge from the movements of a set of individuals which perceive their environment only locally and without a pre-determined destination. This emerging property is the conjunction of individual behaviors and the bathymetric configuration of the Earth’s oceanic basins. Topographic constraints also maintain a limited connectivity between the 14 DPSs. An important consequence of invoking a local perception of environmental change is that the predicted routes are loxodromic and not orthodromic. In an ocean without landmasses, ecophysiological processes tended to over-estimate individual weights. With the actual ocean configuration, the excess weight gain was mitigated and also produced increased heterogeneity ... Article in Journal/Newspaper baleen whales Humpback Whale Megaptera novaeangliae Institut national des sciences de l'Univers: HAL-INSU Journal of Marine Science and Engineering 10 10 1412 |