First demographic insights on historically harvested and poorly known male sperm whale populations off the Crozet and Kerguelen Islands (Southern Ocean)
International audience Age and sex dependent spatial segregation has resulted in limited knowledge of the ecology and demography of sperm whale adult males feeding seasonally in high latitudes. This study focused on adult males interacting with the Patagonian tooth-fish (Dissostichus eleginoides) fish...
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Online Access: | https://hal.archives-ouvertes.fr/hal-01767651 https://doi.org/10.1111/mms.12469 |
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ftccsdartic:oai:HAL:hal-01767651v1 2023-05-15T13:31:37+02:00 First demographic insights on historically harvested and poorly known male sperm whale populations off the Crozet and Kerguelen Islands (Southern Ocean) Labadie, Guillemette Tixier, Paul Barbraud, Christophe Fay, Rémi Gasco, Nicolas Duhamel, Guy Guinet, Christophe Centre d'Études Biologiques de Chizé - UMR 7372 (CEBC) Université de La Rochelle (ULR)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE) Département Milieux et Peuplements Aquatiques Muséum national d'Histoire naturelle (MNHN) 2018 https://hal.archives-ouvertes.fr/hal-01767651 https://doi.org/10.1111/mms.12469 en eng HAL CCSD Wiley info:eu-repo/semantics/altIdentifier/doi/10.1111/mms.12469 hal-01767651 https://hal.archives-ouvertes.fr/hal-01767651 doi:10.1111/mms.12469 ISSN: 0824-0469 EISSN: 1748-7692 Marine Mammal Science https://hal.archives-ouvertes.fr/hal-01767651 Marine Mammal Science, Wiley, 2018, 34 (3), pp.595-615. ⟨10.1111/mms.12469⟩ Physeter macrocephalus mark-recapture robust design sperm whale multistate abundance Antarctic [SDE]Environmental Sciences info:eu-repo/semantics/article Journal articles 2018 ftccsdartic https://doi.org/10.1111/mms.12469 2021-12-19T02:21:52Z International audience Age and sex dependent spatial segregation has resulted in limited knowledge of the ecology and demography of sperm whale adult males feeding seasonally in high latitudes. This study focused on adult males interacting with the Patagonian tooth-fish (Dissostichus eleginoides) fishery operating off the Kerguelen and Crozet Archipela-gos. Demographic parameters were estimated using a 10-yr-long photo-identification data set paired with multistate closed robust design capture-mark-recapture models. The examination of a set of 29,078 photographs taken from fish-ing vessels during sperm whale depredation events resulted in identification of 295 individuals with nine visiting both study areas. Dispersal between both study regions was estimated to be 1% per year. The mean annual number of interacting sperm whales was estimated to n = 82 (95% CI 58–141) in Crozet and n = 106 (95% CI 76–174) in Kerguelen. Transient proportions were 13% in Crozet and 26% in Kerguelen. Corrected for transience, apparent survival estimates were 0.953 (95% CI 0.890–0.993) in Crozet, and 0.911 (95% CI 0.804–0.986) in Kerguelen. These survival and population size estimates are the first for depredating adult males in high latitudes, and can be used in evaluating the current conservation status of this historically harvested stock and to investigate depredation trends in 35 both Crozet and Kerguelen Islands. Article in Journal/Newspaper Antarc* Antarctic Kerguelen Islands Physeter macrocephalus Southern Ocean Sperm whale Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) Antarctic Kerguelen Kerguelen Islands Southern Ocean Marine Mammal Science 34 3 595 615 |
institution |
Open Polar |
collection |
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) |
op_collection_id |
ftccsdartic |
language |
English |
topic |
Physeter macrocephalus mark-recapture robust design sperm whale multistate abundance Antarctic [SDE]Environmental Sciences |
spellingShingle |
Physeter macrocephalus mark-recapture robust design sperm whale multistate abundance Antarctic [SDE]Environmental Sciences Labadie, Guillemette Tixier, Paul Barbraud, Christophe Fay, Rémi Gasco, Nicolas Duhamel, Guy Guinet, Christophe First demographic insights on historically harvested and poorly known male sperm whale populations off the Crozet and Kerguelen Islands (Southern Ocean) |
topic_facet |
Physeter macrocephalus mark-recapture robust design sperm whale multistate abundance Antarctic [SDE]Environmental Sciences |
description |
International audience Age and sex dependent spatial segregation has resulted in limited knowledge of the ecology and demography of sperm whale adult males feeding seasonally in high latitudes. This study focused on adult males interacting with the Patagonian tooth-fish (Dissostichus eleginoides) fishery operating off the Kerguelen and Crozet Archipela-gos. Demographic parameters were estimated using a 10-yr-long photo-identification data set paired with multistate closed robust design capture-mark-recapture models. The examination of a set of 29,078 photographs taken from fish-ing vessels during sperm whale depredation events resulted in identification of 295 individuals with nine visiting both study areas. Dispersal between both study regions was estimated to be 1% per year. The mean annual number of interacting sperm whales was estimated to n = 82 (95% CI 58–141) in Crozet and n = 106 (95% CI 76–174) in Kerguelen. Transient proportions were 13% in Crozet and 26% in Kerguelen. Corrected for transience, apparent survival estimates were 0.953 (95% CI 0.890–0.993) in Crozet, and 0.911 (95% CI 0.804–0.986) in Kerguelen. These survival and population size estimates are the first for depredating adult males in high latitudes, and can be used in evaluating the current conservation status of this historically harvested stock and to investigate depredation trends in 35 both Crozet and Kerguelen Islands. |
author2 |
Centre d'Études Biologiques de Chizé - UMR 7372 (CEBC) Université de La Rochelle (ULR)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE) Département Milieux et Peuplements Aquatiques Muséum national d'Histoire naturelle (MNHN) |
format |
Article in Journal/Newspaper |
author |
Labadie, Guillemette Tixier, Paul Barbraud, Christophe Fay, Rémi Gasco, Nicolas Duhamel, Guy Guinet, Christophe |
author_facet |
Labadie, Guillemette Tixier, Paul Barbraud, Christophe Fay, Rémi Gasco, Nicolas Duhamel, Guy Guinet, Christophe |
author_sort |
Labadie, Guillemette |
title |
First demographic insights on historically harvested and poorly known male sperm whale populations off the Crozet and Kerguelen Islands (Southern Ocean) |
title_short |
First demographic insights on historically harvested and poorly known male sperm whale populations off the Crozet and Kerguelen Islands (Southern Ocean) |
title_full |
First demographic insights on historically harvested and poorly known male sperm whale populations off the Crozet and Kerguelen Islands (Southern Ocean) |
title_fullStr |
First demographic insights on historically harvested and poorly known male sperm whale populations off the Crozet and Kerguelen Islands (Southern Ocean) |
title_full_unstemmed |
First demographic insights on historically harvested and poorly known male sperm whale populations off the Crozet and Kerguelen Islands (Southern Ocean) |
title_sort |
first demographic insights on historically harvested and poorly known male sperm whale populations off the crozet and kerguelen islands (southern ocean) |
publisher |
HAL CCSD |
publishDate |
2018 |
url |
https://hal.archives-ouvertes.fr/hal-01767651 https://doi.org/10.1111/mms.12469 |
geographic |
Antarctic Kerguelen Kerguelen Islands Southern Ocean |
geographic_facet |
Antarctic Kerguelen Kerguelen Islands Southern Ocean |
genre |
Antarc* Antarctic Kerguelen Islands Physeter macrocephalus Southern Ocean Sperm whale |
genre_facet |
Antarc* Antarctic Kerguelen Islands Physeter macrocephalus Southern Ocean Sperm whale |
op_source |
ISSN: 0824-0469 EISSN: 1748-7692 Marine Mammal Science https://hal.archives-ouvertes.fr/hal-01767651 Marine Mammal Science, Wiley, 2018, 34 (3), pp.595-615. ⟨10.1111/mms.12469⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1111/mms.12469 hal-01767651 https://hal.archives-ouvertes.fr/hal-01767651 doi:10.1111/mms.12469 |
op_doi |
https://doi.org/10.1111/mms.12469 |
container_title |
Marine Mammal Science |
container_volume |
34 |
container_issue |
3 |
container_start_page |
595 |
op_container_end_page |
615 |
_version_ |
1766019340655656960 |