Fine scale behaviour and time-budget in the cryptic ectotherm European pond turtle Emys orbicularis.

For ectotherms, behaviour and associated energetic costs are directly related to thermal conditions. In the present context of global change, estimating time-budget for these species is relevant to assess and predict their capacity to adapt to near future. We tested the hypothesis that in ectotherms...

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Autores principales:	Théo Marchand, Anne-Sophie Le Gal, Jean-Yves Georges
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/abea6af1d686424a9f7da34b16ea9161
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spelling	oai:doaj.org-article:abea6af1d686424a9f7da34b16ea91612021-12-02T20:13:41ZFine scale behaviour and time-budget in the cryptic ectotherm European pond turtle Emys orbicularis.1932-620310.1371/journal.pone.0256549https://doaj.org/article/abea6af1d686424a9f7da34b16ea91612021-01-01T00:00:00Zhttps://doi.org/10.1371/journal.pone.0256549https://doaj.org/toc/1932-6203For ectotherms, behaviour and associated energetic costs are directly related to thermal conditions. In the present context of global change, estimating time-budget for these species is relevant to assess and predict their capacity to adapt to near future. We tested the hypothesis that in ectotherms where reproduction is highly energy consuming, energy expenditure should vary throughout the breeding season with a maximum around nesting events. To test this hypothesis, we assessed the fine-scale behaviour, time-budget and estimated energetic costs in eight adult female European pond turtles Emys orbicularis equipped with data-loggers recording ambient temperature, pressure, light and the animals' 3-axis acceleration. Deployments occurred over four months throughout the nesting season 2017 in semi-natural captive conditions in Alsace, France. All study turtles showed a clear daily pattern over the 24h cycle, with four distinct phases (referred to as Night, Morning, Midday and Evening), associated with different behaviours and activity levels. Before oviposition, turtles were mostly active during Morning, and activity was positively driven by ambient temperature. Activity levels doubled during the nesting period, mostly due to the increased activity in the Evening, when nesting events occurred. Throughout the active season, basking occurrence at Midday was related to air temperature but cloud coverage was an even more important factor. Our results are a first step in predicting the seasonal time and energy budgets of the European pond turtle, and demonstrate the usefulness of animal-borne accelerometers to study free living freshwater turtles over extended periods of time.Théo MarchandAnne-Sophie Le GalJean-Yves GeorgesPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 16, Iss 10, p e0256549 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Théo Marchand Anne-Sophie Le Gal Jean-Yves Georges Fine scale behaviour and time-budget in the cryptic ectotherm European pond turtle Emys orbicularis.
description	For ectotherms, behaviour and associated energetic costs are directly related to thermal conditions. In the present context of global change, estimating time-budget for these species is relevant to assess and predict their capacity to adapt to near future. We tested the hypothesis that in ectotherms where reproduction is highly energy consuming, energy expenditure should vary throughout the breeding season with a maximum around nesting events. To test this hypothesis, we assessed the fine-scale behaviour, time-budget and estimated energetic costs in eight adult female European pond turtles Emys orbicularis equipped with data-loggers recording ambient temperature, pressure, light and the animals' 3-axis acceleration. Deployments occurred over four months throughout the nesting season 2017 in semi-natural captive conditions in Alsace, France. All study turtles showed a clear daily pattern over the 24h cycle, with four distinct phases (referred to as Night, Morning, Midday and Evening), associated with different behaviours and activity levels. Before oviposition, turtles were mostly active during Morning, and activity was positively driven by ambient temperature. Activity levels doubled during the nesting period, mostly due to the increased activity in the Evening, when nesting events occurred. Throughout the active season, basking occurrence at Midday was related to air temperature but cloud coverage was an even more important factor. Our results are a first step in predicting the seasonal time and energy budgets of the European pond turtle, and demonstrate the usefulness of animal-borne accelerometers to study free living freshwater turtles over extended periods of time.
format	article
author	Théo Marchand Anne-Sophie Le Gal Jean-Yves Georges
author_facet	Théo Marchand Anne-Sophie Le Gal Jean-Yves Georges
author_sort	Théo Marchand
title	Fine scale behaviour and time-budget in the cryptic ectotherm European pond turtle Emys orbicularis.
title_short	Fine scale behaviour and time-budget in the cryptic ectotherm European pond turtle Emys orbicularis.
title_full	Fine scale behaviour and time-budget in the cryptic ectotherm European pond turtle Emys orbicularis.
title_fullStr	Fine scale behaviour and time-budget in the cryptic ectotherm European pond turtle Emys orbicularis.
title_full_unstemmed	Fine scale behaviour and time-budget in the cryptic ectotherm European pond turtle Emys orbicularis.
title_sort	fine scale behaviour and time-budget in the cryptic ectotherm european pond turtle emys orbicularis.
publisher	Public Library of Science (PLoS)
publishDate	2021
url	https://doaj.org/article/abea6af1d686424a9f7da34b16ea9161
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Fine scale behaviour and time-budget in the cryptic ectotherm European pond turtle Emys orbicularis.

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