Movement patterns and activity levels are shaped by the neonatal environment in Antarctic fur seal pups

Abstract Tracking studies of juveniles are rare compared to those of adults, and consequently little is known about the influence of intrinsic and extrinsic factors on activity during this critical life stage. We used hourly GPS data, collected from 66 Antarctic fur seal pups from birth until moulti...

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Autores principales:	Rebecca Nagel, Sina Mews, Timo Adam, Claire Stainfield, Cameron Fox-Clarke, Camille Toscani, Roland Langrock, Jaume Forcada, Joseph I. Hoffman
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/cb8dd30df9434c6c89e1049161429153
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spelling	oai:doaj.org-article:cb8dd30df9434c6c89e10491614291532021-12-02T18:30:57ZMovement patterns and activity levels are shaped by the neonatal environment in Antarctic fur seal pups10.1038/s41598-021-93253-12045-2322https://doaj.org/article/cb8dd30df9434c6c89e10491614291532021-07-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-93253-1https://doaj.org/toc/2045-2322Abstract Tracking studies of juveniles are rare compared to those of adults, and consequently little is known about the influence of intrinsic and extrinsic factors on activity during this critical life stage. We used hourly GPS data, collected from 66 Antarctic fur seal pups from birth until moulting, to investigate the explanatory power of multiple individual-based and environmental variables on activity levels. Pups were sampled from two nearby breeding colonies of contrasting density during two subsequent years, and a two-state hidden Markov model was used to identify modalities in their movement behaviour, specifically ‘active’ and ‘inactive’ states. We found that movement was typified by central place exploration, with active movement away from and subsequent return to a location of inactivity. The probability of such directed exploration was unaffected by several factors known to influence marine mammal movement including sex, body condition, and temperature. Compared to pups born at the high-density colony, pups at low-density were more active, increased their activity with age, and transitioned earlier into the tussock grass, which offers protection from predators and extreme weather. Our study illustrates the importance of extrinsic factors, such as colony of birth, to early-life activity patterns and highlights the adaptive potential of movement.Rebecca NagelSina MewsTimo AdamClaire StainfieldCameron Fox-ClarkeCamille ToscaniRoland LangrockJaume ForcadaJoseph I. HoffmanNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-12 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Rebecca Nagel Sina Mews Timo Adam Claire Stainfield Cameron Fox-Clarke Camille Toscani Roland Langrock Jaume Forcada Joseph I. Hoffman Movement patterns and activity levels are shaped by the neonatal environment in Antarctic fur seal pups
description	Abstract Tracking studies of juveniles are rare compared to those of adults, and consequently little is known about the influence of intrinsic and extrinsic factors on activity during this critical life stage. We used hourly GPS data, collected from 66 Antarctic fur seal pups from birth until moulting, to investigate the explanatory power of multiple individual-based and environmental variables on activity levels. Pups were sampled from two nearby breeding colonies of contrasting density during two subsequent years, and a two-state hidden Markov model was used to identify modalities in their movement behaviour, specifically ‘active’ and ‘inactive’ states. We found that movement was typified by central place exploration, with active movement away from and subsequent return to a location of inactivity. The probability of such directed exploration was unaffected by several factors known to influence marine mammal movement including sex, body condition, and temperature. Compared to pups born at the high-density colony, pups at low-density were more active, increased their activity with age, and transitioned earlier into the tussock grass, which offers protection from predators and extreme weather. Our study illustrates the importance of extrinsic factors, such as colony of birth, to early-life activity patterns and highlights the adaptive potential of movement.
format	article
author	Rebecca Nagel Sina Mews Timo Adam Claire Stainfield Cameron Fox-Clarke Camille Toscani Roland Langrock Jaume Forcada Joseph I. Hoffman
author_facet	Rebecca Nagel Sina Mews Timo Adam Claire Stainfield Cameron Fox-Clarke Camille Toscani Roland Langrock Jaume Forcada Joseph I. Hoffman
author_sort	Rebecca Nagel
title	Movement patterns and activity levels are shaped by the neonatal environment in Antarctic fur seal pups
title_short	Movement patterns and activity levels are shaped by the neonatal environment in Antarctic fur seal pups
title_full	Movement patterns and activity levels are shaped by the neonatal environment in Antarctic fur seal pups
title_fullStr	Movement patterns and activity levels are shaped by the neonatal environment in Antarctic fur seal pups
title_full_unstemmed	Movement patterns and activity levels are shaped by the neonatal environment in Antarctic fur seal pups
title_sort	movement patterns and activity levels are shaped by the neonatal environment in antarctic fur seal pups
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/cb8dd30df9434c6c89e1049161429153
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Movement patterns and activity levels are shaped by the neonatal environment in Antarctic fur seal pups

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