Maternal care in the subantarctic fur seals on Amsterdam Island
International audience This paper reports the first study of maternal input and care from birth to weaning in a fur seal with a long pup-rearing period: the subantarctic fur seal Arctocephalus tropicalis breeding on the temperate Amsterdam Island, Indian Ocean. The protracted weaning period provided...
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ftunivnantes:oai:HAL:hal-00193442v1 2023-05-15T13:22:28+02:00 Maternal care in the subantarctic fur seals on Amsterdam Island Georges, Jean-Yves Guinet, Christophe Centre d'Études Biologiques de Chizé (CEBC) Centre National de la Recherche Scientifique (CNRS) Laboratoire de Biochimie et Biologie Marines La Rochelle Université (ULR) 2000 https://hal.science/hal-00193442 https://doi.org/10.1890/0012-9658(2000)081[0295:MCITSF]2.0.CO;2 en eng HAL CCSD Ecological Society of America info:eu-repo/semantics/altIdentifier/doi/10.1890/0012-9658(2000)081[0295:MCITSF]2.0.CO;2 hal-00193442 https://hal.science/hal-00193442 doi:10.1890/0012-9658(2000)081[0295:MCITSF]2.0.CO;2 ISSN: 0012-9658 Ecology https://hal.science/hal-00193442 Ecology, 2000, 81 (2), pp.295-308. ⟨10.1890/0012-9658(2000)081[0295:MCITSF]2.0.CO;2⟩ subantarctic fur seal Arctocephalus tropicalis foraging effort maternal care maternal input Otariidae Pinnipedia provisioning pattern pup growth rate [SDE.BE]Environmental Sciences/Biodiversity and Ecology info:eu-repo/semantics/article Journal articles 2000 ftunivnantes https://doi.org/10.1890/0012-9658(2000)081[0295:MCITSF]2.0.CO;2 2023-02-08T08:12:23Z International audience This paper reports the first study of maternal input and care from birth to weaning in a fur seal with a long pup-rearing period: the subantarctic fur seal Arctocephalus tropicalis breeding on the temperate Amsterdam Island, Indian Ocean. The protracted weaning period provided the opportunity for examination of maternal care in relation to seasonal changes in the requirements of the mother–pup pair and environmental conditions. During the reproductive season 1995–1996, maternal care was investigated in terms of provisioning (maternal attendance) pattern while diving effort was investigated using time depth recorders in summer and winter. Maternal input was calculated in terms of the absolute rate of pup mass gain and, ultimately, pup growth rate and pup body mass at weaning. Lactating subantarctic fur seals perform one of the longest attendance cycles described in fur seals, spending on average 11–23 d at sea from summer to winter. The time mothers spend ashore suckling their pup is also long (;4 d) but remains constant throughout the year. Throughout the year, maternal input should be described as follows: mothers spending a long time at sea store a large amount of body reserves that provide them a good body condition. Consequently, they spend a long time ashore to transfer their body reserves to their pups. However, mothers spending short attendance periods increase the mass transfer efficiency, probably by decreasing their metabolic overhead. In summer, maternal care was mostly controlled by pup traits: maternal absences appeared to be controlled by pup fasting ability, while maternal input was controlled by pup ingestion ability, i.e., pup body size and the time the pup was suckling. In fall, pups were no longer limited in milk ingestion, and maternal input was mostly controlled by maternal traits (e.g., body length and experience). In winter, maternal input decreased as the pup became older despite an increase in maternal diving effort. We propose that, in winter, maternal ... Article in Journal/Newspaper Amsterdam Island Université de Nantes: HAL-UNIV-NANTES Indian |
institution |
Open Polar |
collection |
Université de Nantes: HAL-UNIV-NANTES |
op_collection_id |
ftunivnantes |
language |
English |
topic |
subantarctic fur seal Arctocephalus tropicalis foraging effort maternal care maternal input Otariidae Pinnipedia provisioning pattern pup growth rate [SDE.BE]Environmental Sciences/Biodiversity and Ecology |
spellingShingle |
subantarctic fur seal Arctocephalus tropicalis foraging effort maternal care maternal input Otariidae Pinnipedia provisioning pattern pup growth rate [SDE.BE]Environmental Sciences/Biodiversity and Ecology Georges, Jean-Yves Guinet, Christophe Maternal care in the subantarctic fur seals on Amsterdam Island |
topic_facet |
subantarctic fur seal Arctocephalus tropicalis foraging effort maternal care maternal input Otariidae Pinnipedia provisioning pattern pup growth rate [SDE.BE]Environmental Sciences/Biodiversity and Ecology |
description |
International audience This paper reports the first study of maternal input and care from birth to weaning in a fur seal with a long pup-rearing period: the subantarctic fur seal Arctocephalus tropicalis breeding on the temperate Amsterdam Island, Indian Ocean. The protracted weaning period provided the opportunity for examination of maternal care in relation to seasonal changes in the requirements of the mother–pup pair and environmental conditions. During the reproductive season 1995–1996, maternal care was investigated in terms of provisioning (maternal attendance) pattern while diving effort was investigated using time depth recorders in summer and winter. Maternal input was calculated in terms of the absolute rate of pup mass gain and, ultimately, pup growth rate and pup body mass at weaning. Lactating subantarctic fur seals perform one of the longest attendance cycles described in fur seals, spending on average 11–23 d at sea from summer to winter. The time mothers spend ashore suckling their pup is also long (;4 d) but remains constant throughout the year. Throughout the year, maternal input should be described as follows: mothers spending a long time at sea store a large amount of body reserves that provide them a good body condition. Consequently, they spend a long time ashore to transfer their body reserves to their pups. However, mothers spending short attendance periods increase the mass transfer efficiency, probably by decreasing their metabolic overhead. In summer, maternal care was mostly controlled by pup traits: maternal absences appeared to be controlled by pup fasting ability, while maternal input was controlled by pup ingestion ability, i.e., pup body size and the time the pup was suckling. In fall, pups were no longer limited in milk ingestion, and maternal input was mostly controlled by maternal traits (e.g., body length and experience). In winter, maternal input decreased as the pup became older despite an increase in maternal diving effort. We propose that, in winter, maternal ... |
author2 |
Centre d'Études Biologiques de Chizé (CEBC) Centre National de la Recherche Scientifique (CNRS) Laboratoire de Biochimie et Biologie Marines La Rochelle Université (ULR) |
format |
Article in Journal/Newspaper |
author |
Georges, Jean-Yves Guinet, Christophe |
author_facet |
Georges, Jean-Yves Guinet, Christophe |
author_sort |
Georges, Jean-Yves |
title |
Maternal care in the subantarctic fur seals on Amsterdam Island |
title_short |
Maternal care in the subantarctic fur seals on Amsterdam Island |
title_full |
Maternal care in the subantarctic fur seals on Amsterdam Island |
title_fullStr |
Maternal care in the subantarctic fur seals on Amsterdam Island |
title_full_unstemmed |
Maternal care in the subantarctic fur seals on Amsterdam Island |
title_sort |
maternal care in the subantarctic fur seals on amsterdam island |
publisher |
HAL CCSD |
publishDate |
2000 |
url |
https://hal.science/hal-00193442 https://doi.org/10.1890/0012-9658(2000)081[0295:MCITSF]2.0.CO;2 |
geographic |
Indian |
geographic_facet |
Indian |
genre |
Amsterdam Island |
genre_facet |
Amsterdam Island |
op_source |
ISSN: 0012-9658 Ecology https://hal.science/hal-00193442 Ecology, 2000, 81 (2), pp.295-308. ⟨10.1890/0012-9658(2000)081[0295:MCITSF]2.0.CO;2⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1890/0012-9658(2000)081[0295:MCITSF]2.0.CO;2 hal-00193442 https://hal.science/hal-00193442 doi:10.1890/0012-9658(2000)081[0295:MCITSF]2.0.CO;2 |
op_doi |
https://doi.org/10.1890/0012-9658(2000)081[0295:MCITSF]2.0.CO;2 |
_version_ |
1766365086383865856 |