Interannual variation in the post-weaning and juvenile survival of subantarctic fur seals: influence of pup sex, growth rate and oceanographic conditions
13 pages International audience 1. A major hypothesis of life history theory is that early development conditions affect future survival and reproductive success. However, although a growing number of studies have addressed this question, many of them are taxonomically biased, thereby impeding the g...
Published in: | Journal of Animal Ecology |
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Language: | English |
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Online Access: | https://hal.science/hal-00187329 https://doi.org/10.1111/j.1365-2656.2005.01016.x |
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ftunivnantes:oai:HAL:hal-00187329v1 2023-05-15T13:22:36+02:00 Interannual variation in the post-weaning and juvenile survival of subantarctic fur seals: influence of pup sex, growth rate and oceanographic conditions Beauplet, Gwenael Barbraud, Christophe Chambellant, Magaly Guinet, Christophe Centre d'Études Biologiques de Chizé (CEBC) Centre National de la Recherche Scientifique (CNRS) 2005 https://hal.science/hal-00187329 https://doi.org/10.1111/j.1365-2656.2005.01016.x en eng HAL CCSD Wiley info:eu-repo/semantics/altIdentifier/doi/10.1111/j.1365-2656.2005.01016.x hal-00187329 https://hal.science/hal-00187329 doi:10.1111/j.1365-2656.2005.01016.x ISSN: 0021-8790 EISSN: 1365-2656 Journal of Animal Ecology https://hal.science/hal-00187329 Journal of Animal Ecology, 2005, 74, pp.1160-1172. ⟨10.1111/j.1365-2656.2005.01016.x⟩ early development multistate mark–recapture models post-lactating survival sea surface temperature anomalies temporary emigration [SDE.BE]Environmental Sciences/Biodiversity and Ecology [SDE.ES]Environmental Sciences/Environmental and Society [SDE.MCG]Environmental Sciences/Global Changes info:eu-repo/semantics/article Journal articles 2005 ftunivnantes https://doi.org/10.1111/j.1365-2656.2005.01016.x 2023-02-08T08:23:03Z 13 pages International audience 1. A major hypothesis of life history theory is that early development conditions affect future survival and reproductive success. However, although a growing number of studies have addressed this question, many of them are taxonomically biased, thereby impeding the generalization of this hypothesis. 2. This study examines the factors influencing post-weaning survival in five weaned cohorts of subantarctic fur seal pups from Amsterdam Island, southern Indian Ocean. It used mark–recapture data from 7 consecutive years of different environmental conditions. 3. The cohort return rate varied from 45% to 74% of weaned pups, depending on the year of weaning. In each cohort, 96% of weaned pups returned between 3 and 6 years of age, and none of the factors examined seemed to influence this timing pattern. The probability of survival to this first return was negatively related to sea-surface temperature anomalies (SSTa) of the 6 months following the weaning process. It increased with pup preweaning growth rate and differed between the sexes. Females' survival rate was significantly higher than males', except during years of extreme SSTa, where no difference was detected. 4. The juvenile state represented young individuals after their first return on their native island. Annual juvenile tag loss rate was constant at 0·217 (SE = 0·027), whereas temporary emigration rate varied over cohorts and was higher in males 0·423 (SE = 0·035) than in females 0·170 (SE = 0·012). This dispersion pattern may be prolonged in some cases, as the yearly immigration probability was constant at 0·290 (SE = 0·065). 5. Taking into account tag loss and temporary emigration, the estimated yearly survival probability of juveniles was 0·964 (SE = 0·022). This value was unrelated to any tested oceanographic or individual parameter including sex. 6. Results support the hypothesis that early development traits affect short-term post-weaning survival. However, no long-term effect of maternal postnatal investment was ... Article in Journal/Newspaper Amsterdam Island Université de Nantes: HAL-UNIV-NANTES Indian Journal of Animal Ecology 74 6 1160 1172 |
institution |
Open Polar |
collection |
Université de Nantes: HAL-UNIV-NANTES |
op_collection_id |
ftunivnantes |
language |
English |
topic |
early development multistate mark–recapture models post-lactating survival sea surface temperature anomalies temporary emigration [SDE.BE]Environmental Sciences/Biodiversity and Ecology [SDE.ES]Environmental Sciences/Environmental and Society [SDE.MCG]Environmental Sciences/Global Changes |
spellingShingle |
early development multistate mark–recapture models post-lactating survival sea surface temperature anomalies temporary emigration [SDE.BE]Environmental Sciences/Biodiversity and Ecology [SDE.ES]Environmental Sciences/Environmental and Society [SDE.MCG]Environmental Sciences/Global Changes Beauplet, Gwenael Barbraud, Christophe Chambellant, Magaly Guinet, Christophe Interannual variation in the post-weaning and juvenile survival of subantarctic fur seals: influence of pup sex, growth rate and oceanographic conditions |
topic_facet |
early development multistate mark–recapture models post-lactating survival sea surface temperature anomalies temporary emigration [SDE.BE]Environmental Sciences/Biodiversity and Ecology [SDE.ES]Environmental Sciences/Environmental and Society [SDE.MCG]Environmental Sciences/Global Changes |
description |
13 pages International audience 1. A major hypothesis of life history theory is that early development conditions affect future survival and reproductive success. However, although a growing number of studies have addressed this question, many of them are taxonomically biased, thereby impeding the generalization of this hypothesis. 2. This study examines the factors influencing post-weaning survival in five weaned cohorts of subantarctic fur seal pups from Amsterdam Island, southern Indian Ocean. It used mark–recapture data from 7 consecutive years of different environmental conditions. 3. The cohort return rate varied from 45% to 74% of weaned pups, depending on the year of weaning. In each cohort, 96% of weaned pups returned between 3 and 6 years of age, and none of the factors examined seemed to influence this timing pattern. The probability of survival to this first return was negatively related to sea-surface temperature anomalies (SSTa) of the 6 months following the weaning process. It increased with pup preweaning growth rate and differed between the sexes. Females' survival rate was significantly higher than males', except during years of extreme SSTa, where no difference was detected. 4. The juvenile state represented young individuals after their first return on their native island. Annual juvenile tag loss rate was constant at 0·217 (SE = 0·027), whereas temporary emigration rate varied over cohorts and was higher in males 0·423 (SE = 0·035) than in females 0·170 (SE = 0·012). This dispersion pattern may be prolonged in some cases, as the yearly immigration probability was constant at 0·290 (SE = 0·065). 5. Taking into account tag loss and temporary emigration, the estimated yearly survival probability of juveniles was 0·964 (SE = 0·022). This value was unrelated to any tested oceanographic or individual parameter including sex. 6. Results support the hypothesis that early development traits affect short-term post-weaning survival. However, no long-term effect of maternal postnatal investment was ... |
author2 |
Centre d'Études Biologiques de Chizé (CEBC) Centre National de la Recherche Scientifique (CNRS) |
format |
Article in Journal/Newspaper |
author |
Beauplet, Gwenael Barbraud, Christophe Chambellant, Magaly Guinet, Christophe |
author_facet |
Beauplet, Gwenael Barbraud, Christophe Chambellant, Magaly Guinet, Christophe |
author_sort |
Beauplet, Gwenael |
title |
Interannual variation in the post-weaning and juvenile survival of subantarctic fur seals: influence of pup sex, growth rate and oceanographic conditions |
title_short |
Interannual variation in the post-weaning and juvenile survival of subantarctic fur seals: influence of pup sex, growth rate and oceanographic conditions |
title_full |
Interannual variation in the post-weaning and juvenile survival of subantarctic fur seals: influence of pup sex, growth rate and oceanographic conditions |
title_fullStr |
Interannual variation in the post-weaning and juvenile survival of subantarctic fur seals: influence of pup sex, growth rate and oceanographic conditions |
title_full_unstemmed |
Interannual variation in the post-weaning and juvenile survival of subantarctic fur seals: influence of pup sex, growth rate and oceanographic conditions |
title_sort |
interannual variation in the post-weaning and juvenile survival of subantarctic fur seals: influence of pup sex, growth rate and oceanographic conditions |
publisher |
HAL CCSD |
publishDate |
2005 |
url |
https://hal.science/hal-00187329 https://doi.org/10.1111/j.1365-2656.2005.01016.x |
geographic |
Indian |
geographic_facet |
Indian |
genre |
Amsterdam Island |
genre_facet |
Amsterdam Island |
op_source |
ISSN: 0021-8790 EISSN: 1365-2656 Journal of Animal Ecology https://hal.science/hal-00187329 Journal of Animal Ecology, 2005, 74, pp.1160-1172. ⟨10.1111/j.1365-2656.2005.01016.x⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1111/j.1365-2656.2005.01016.x hal-00187329 https://hal.science/hal-00187329 doi:10.1111/j.1365-2656.2005.01016.x |
op_doi |
https://doi.org/10.1111/j.1365-2656.2005.01016.x |
container_title |
Journal of Animal Ecology |
container_volume |
74 |
container_issue |
6 |
container_start_page |
1160 |
op_container_end_page |
1172 |
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1766365648763486208 |