Social calls in humpback whale mother-calf groups off Sainte Marie breeding ground (Madagascar, Indian Ocean)
International audience Humpback whales ( Megaptera novaeangliae ) use vocalizations during diverse social interactions or activities such as foraging or mating. Unlike songs produced only by males, social calls are produced by all types of individuals (adult males and females, juveniles and calves)....
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Online Access: | https://hal.sorbonne-universite.fr/hal-03950864 https://hal.sorbonne-universite.fr/hal-03950864/document https://hal.sorbonne-universite.fr/hal-03950864/file/peerj-13785.pdf https://doi.org/10.7717/peerj.13785 |
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ftsorbonneuniv:oai:HAL:hal-03950864v1 2024-01-07T09:43:48+01:00 Social calls in humpback whale mother-calf groups off Sainte Marie breeding ground (Madagascar, Indian Ocean) Saloma, Anjara Ratsimbazafindranahaka, Maevatiana Martin, Mathilde Andrianarimisa, Aristide Huetz, Chloé Adam, Olivier Charrier, Isabelle Lutheries - Acoustique - Musique (IJLRDA-LAM) Institut Jean Le Rond d'Alembert (DALEMBERT) Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS) 2022 https://hal.sorbonne-universite.fr/hal-03950864 https://hal.sorbonne-universite.fr/hal-03950864/document https://hal.sorbonne-universite.fr/hal-03950864/file/peerj-13785.pdf https://doi.org/10.7717/peerj.13785 en eng HAL CCSD PeerJ info:eu-repo/semantics/altIdentifier/doi/10.7717/peerj.13785 hal-03950864 https://hal.sorbonne-universite.fr/hal-03950864 https://hal.sorbonne-universite.fr/hal-03950864/document https://hal.sorbonne-universite.fr/hal-03950864/file/peerj-13785.pdf doi:10.7717/peerj.13785 info:eu-repo/semantics/OpenAccess ISSN: 2167-8359 PeerJ https://hal.sorbonne-universite.fr/hal-03950864 PeerJ, 2022, 10, pp.e13785. ⟨10.7717/peerj.13785⟩ [SDV]Life Sciences [q-bio] info:eu-repo/semantics/article Journal articles 2022 ftsorbonneuniv https://doi.org/10.7717/peerj.13785 2023-12-12T23:37:44Z International audience Humpback whales ( Megaptera novaeangliae ) use vocalizations during diverse social interactions or activities such as foraging or mating. Unlike songs produced only by males, social calls are produced by all types of individuals (adult males and females, juveniles and calves). Several studies have described social calls in the humpback whale’s breeding and the feeding grounds and from different geographic areas. We aimed to investigate for the first time the vocal repertoire of humpback whale mother-calf groups during the breeding season off Sainte Marie island, Madagascar, South Western Indian Ocean using data collected in 2013, 2014, 2016, and 2017. We recorded social calls using Acousonde tags deployed on the mother or the calf in mother-calf groups. A total of 21 deployments were analyzed. We visually and aurally identified 30 social call types and classified them into five categories: low, medium, high-frequency sounds, amplitude-modulated sounds, and pulsed sounds. The aural-visual classifications have been validated using random forest (RF) analyses. Low-frequency sounds constituted 46% of all social calls, mid-frequency 35%, and high frequency 10%. Amplitude-modulated sounds constituted 8% of all vocalizations, and pulsed sounds constituted 1%. While some social call types seemed specific to our study area, others presented similarities with social calls described in other geographic areas, on breeding and foraging grounds, and during migrating routes. Among the call types described in this study, nine call types were also found in humpback whale songs recorded in the same region. The 30 call types highlight the diversity of the social calls recorded in mother-calf groups and thus the importance of acoustic interactions in the relationships between the mother and her calf and between the mother-calf pair and escorts. Article in Journal/Newspaper Humpback Whale Megaptera novaeangliae Marie Island HAL Sorbonne Université Indian Marie Island ENVELOPE(-65.724,-65.724,-66.125,-66.125) PeerJ 10 e13785 |
institution |
Open Polar |
collection |
HAL Sorbonne Université |
op_collection_id |
ftsorbonneuniv |
language |
English |
topic |
[SDV]Life Sciences [q-bio] |
spellingShingle |
[SDV]Life Sciences [q-bio] Saloma, Anjara Ratsimbazafindranahaka, Maevatiana Martin, Mathilde Andrianarimisa, Aristide Huetz, Chloé Adam, Olivier Charrier, Isabelle Social calls in humpback whale mother-calf groups off Sainte Marie breeding ground (Madagascar, Indian Ocean) |
topic_facet |
[SDV]Life Sciences [q-bio] |
description |
International audience Humpback whales ( Megaptera novaeangliae ) use vocalizations during diverse social interactions or activities such as foraging or mating. Unlike songs produced only by males, social calls are produced by all types of individuals (adult males and females, juveniles and calves). Several studies have described social calls in the humpback whale’s breeding and the feeding grounds and from different geographic areas. We aimed to investigate for the first time the vocal repertoire of humpback whale mother-calf groups during the breeding season off Sainte Marie island, Madagascar, South Western Indian Ocean using data collected in 2013, 2014, 2016, and 2017. We recorded social calls using Acousonde tags deployed on the mother or the calf in mother-calf groups. A total of 21 deployments were analyzed. We visually and aurally identified 30 social call types and classified them into five categories: low, medium, high-frequency sounds, amplitude-modulated sounds, and pulsed sounds. The aural-visual classifications have been validated using random forest (RF) analyses. Low-frequency sounds constituted 46% of all social calls, mid-frequency 35%, and high frequency 10%. Amplitude-modulated sounds constituted 8% of all vocalizations, and pulsed sounds constituted 1%. While some social call types seemed specific to our study area, others presented similarities with social calls described in other geographic areas, on breeding and foraging grounds, and during migrating routes. Among the call types described in this study, nine call types were also found in humpback whale songs recorded in the same region. The 30 call types highlight the diversity of the social calls recorded in mother-calf groups and thus the importance of acoustic interactions in the relationships between the mother and her calf and between the mother-calf pair and escorts. |
author2 |
Lutheries - Acoustique - Musique (IJLRDA-LAM) Institut Jean Le Rond d'Alembert (DALEMBERT) Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS) |
format |
Article in Journal/Newspaper |
author |
Saloma, Anjara Ratsimbazafindranahaka, Maevatiana Martin, Mathilde Andrianarimisa, Aristide Huetz, Chloé Adam, Olivier Charrier, Isabelle |
author_facet |
Saloma, Anjara Ratsimbazafindranahaka, Maevatiana Martin, Mathilde Andrianarimisa, Aristide Huetz, Chloé Adam, Olivier Charrier, Isabelle |
author_sort |
Saloma, Anjara |
title |
Social calls in humpback whale mother-calf groups off Sainte Marie breeding ground (Madagascar, Indian Ocean) |
title_short |
Social calls in humpback whale mother-calf groups off Sainte Marie breeding ground (Madagascar, Indian Ocean) |
title_full |
Social calls in humpback whale mother-calf groups off Sainte Marie breeding ground (Madagascar, Indian Ocean) |
title_fullStr |
Social calls in humpback whale mother-calf groups off Sainte Marie breeding ground (Madagascar, Indian Ocean) |
title_full_unstemmed |
Social calls in humpback whale mother-calf groups off Sainte Marie breeding ground (Madagascar, Indian Ocean) |
title_sort |
social calls in humpback whale mother-calf groups off sainte marie breeding ground (madagascar, indian ocean) |
publisher |
HAL CCSD |
publishDate |
2022 |
url |
https://hal.sorbonne-universite.fr/hal-03950864 https://hal.sorbonne-universite.fr/hal-03950864/document https://hal.sorbonne-universite.fr/hal-03950864/file/peerj-13785.pdf https://doi.org/10.7717/peerj.13785 |
long_lat |
ENVELOPE(-65.724,-65.724,-66.125,-66.125) |
geographic |
Indian Marie Island |
geographic_facet |
Indian Marie Island |
genre |
Humpback Whale Megaptera novaeangliae Marie Island |
genre_facet |
Humpback Whale Megaptera novaeangliae Marie Island |
op_source |
ISSN: 2167-8359 PeerJ https://hal.sorbonne-universite.fr/hal-03950864 PeerJ, 2022, 10, pp.e13785. ⟨10.7717/peerj.13785⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.7717/peerj.13785 hal-03950864 https://hal.sorbonne-universite.fr/hal-03950864 https://hal.sorbonne-universite.fr/hal-03950864/document https://hal.sorbonne-universite.fr/hal-03950864/file/peerj-13785.pdf doi:10.7717/peerj.13785 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.7717/peerj.13785 |
container_title |
PeerJ |
container_volume |
10 |
container_start_page |
e13785 |
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1787425078643785728 |