A novel approach to analysing observer-based attendance patterns data, using lactating Subantarctic fur seals from Marion Island
Observer-based studies often underestimate key ecological parameters. Here a fresh approach was used to analyse six years (2006–11) of attendance cycles to estimate foraging trip lengths of a lactating flipper-tagged otariid: subantarctic fur seals at Marion Island. Multi-state mark-recapture models...
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Online Access: | https://hal.archives-ouvertes.fr/hal-01210218 https://doi.org/10.1017/S0954102014000716 |
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ftccsdartic:oai:HAL:hal-01210218v1 2023-05-15T14:14:50+02:00 A novel approach to analysing observer-based attendance patterns data, using lactating Subantarctic fur seals from Marion Island Wege, Mia Nevoux, Marie de Bruyn, P. J. N. Bester, M. Department of Zoology and Entomology, Mammal Research Institute University of Pretoria South Africa Écologie et santé des écosystèmes (ESE) Institut National de la Recherche Agronomique (INRA)-AGROCAMPUS OUEST Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro) 2014 https://hal.archives-ouvertes.fr/hal-01210218 https://doi.org/10.1017/S0954102014000716 en eng HAL CCSD Cambridge University Press (CUP) info:eu-repo/semantics/altIdentifier/doi/10.1017/S0954102014000716 hal-01210218 https://hal.archives-ouvertes.fr/hal-01210218 doi:10.1017/S0954102014000716 PRODINRA: 270326 WOS: 000356492300004 ISSN: 0954-1020 EISSN: 1365-2079 Antarctic Science https://hal.archives-ouvertes.fr/hal-01210218 Antarctic Science, Cambridge University Press (CUP), 2014, FirstView Article (3), 11 p. ⟨10.1017/S0954102014000716⟩ pup sex detection probability Arctocephalus tropicalis transition probability seasonal effects [SDV]Life Sciences [q-bio] info:eu-repo/semantics/article Journal articles 2014 ftccsdartic https://doi.org/10.1017/S0954102014000716 2021-05-30T00:15:50Z Observer-based studies often underestimate key ecological parameters. Here a fresh approach was used to analyse six years (2006–11) of attendance cycles to estimate foraging trip lengths of a lactating flipper-tagged otariid: subantarctic fur seals at Marion Island. Multi-state mark-recapture models were used to calculate detection failures of females, correct estimates accordingly, and investigate the effects of year, season, pup sex and the presence of a telemetry device on attendance cycle parameters. There were no differences between corrected and uncorrected attendance data. This is attributed to the high capture probability across all seasons (range: 83–98%). This illustrates that observer-based studies are useful to augment telemetry studies. Only season and pup sex had a significant impact on female provisioning rates. In winter, foraging trip durations were longer (t-value=25.22, P<0.0001) and attendance durations shorter (t-value=-2.15, P=0.01) than during summer. Females with female pups spent a higher proportion of their time on land (χ2=6.6, P<0.05). Male pups have higher growth demands and are larger which suggests they can deplete female milk-stores faster. Article in Journal/Newspaper Antarctic Science Marion Island Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) Antarctic Science 27 3 252 262 |
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 |
pup sex detection probability Arctocephalus tropicalis transition probability seasonal effects [SDV]Life Sciences [q-bio] |
spellingShingle |
pup sex detection probability Arctocephalus tropicalis transition probability seasonal effects [SDV]Life Sciences [q-bio] Wege, Mia Nevoux, Marie de Bruyn, P. J. N. Bester, M. A novel approach to analysing observer-based attendance patterns data, using lactating Subantarctic fur seals from Marion Island |
topic_facet |
pup sex detection probability Arctocephalus tropicalis transition probability seasonal effects [SDV]Life Sciences [q-bio] |
description |
Observer-based studies often underestimate key ecological parameters. Here a fresh approach was used to analyse six years (2006–11) of attendance cycles to estimate foraging trip lengths of a lactating flipper-tagged otariid: subantarctic fur seals at Marion Island. Multi-state mark-recapture models were used to calculate detection failures of females, correct estimates accordingly, and investigate the effects of year, season, pup sex and the presence of a telemetry device on attendance cycle parameters. There were no differences between corrected and uncorrected attendance data. This is attributed to the high capture probability across all seasons (range: 83–98%). This illustrates that observer-based studies are useful to augment telemetry studies. Only season and pup sex had a significant impact on female provisioning rates. In winter, foraging trip durations were longer (t-value=25.22, P<0.0001) and attendance durations shorter (t-value=-2.15, P=0.01) than during summer. Females with female pups spent a higher proportion of their time on land (χ2=6.6, P<0.05). Male pups have higher growth demands and are larger which suggests they can deplete female milk-stores faster. |
author2 |
Department of Zoology and Entomology, Mammal Research Institute University of Pretoria South Africa Écologie et santé des écosystèmes (ESE) Institut National de la Recherche Agronomique (INRA)-AGROCAMPUS OUEST Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro) |
format |
Article in Journal/Newspaper |
author |
Wege, Mia Nevoux, Marie de Bruyn, P. J. N. Bester, M. |
author_facet |
Wege, Mia Nevoux, Marie de Bruyn, P. J. N. Bester, M. |
author_sort |
Wege, Mia |
title |
A novel approach to analysing observer-based attendance patterns data, using lactating Subantarctic fur seals from Marion Island |
title_short |
A novel approach to analysing observer-based attendance patterns data, using lactating Subantarctic fur seals from Marion Island |
title_full |
A novel approach to analysing observer-based attendance patterns data, using lactating Subantarctic fur seals from Marion Island |
title_fullStr |
A novel approach to analysing observer-based attendance patterns data, using lactating Subantarctic fur seals from Marion Island |
title_full_unstemmed |
A novel approach to analysing observer-based attendance patterns data, using lactating Subantarctic fur seals from Marion Island |
title_sort |
novel approach to analysing observer-based attendance patterns data, using lactating subantarctic fur seals from marion island |
publisher |
HAL CCSD |
publishDate |
2014 |
url |
https://hal.archives-ouvertes.fr/hal-01210218 https://doi.org/10.1017/S0954102014000716 |
genre |
Antarctic Science Marion Island |
genre_facet |
Antarctic Science Marion Island |
op_source |
ISSN: 0954-1020 EISSN: 1365-2079 Antarctic Science https://hal.archives-ouvertes.fr/hal-01210218 Antarctic Science, Cambridge University Press (CUP), 2014, FirstView Article (3), 11 p. ⟨10.1017/S0954102014000716⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1017/S0954102014000716 hal-01210218 https://hal.archives-ouvertes.fr/hal-01210218 doi:10.1017/S0954102014000716 PRODINRA: 270326 WOS: 000356492300004 |
op_doi |
https://doi.org/10.1017/S0954102014000716 |
container_title |
Antarctic Science |
container_volume |
27 |
container_issue |
3 |
container_start_page |
252 |
op_container_end_page |
262 |
_version_ |
1766287206855475200 |