Measuring energy expenditure in sub-adult and hatchling sea turtles via accelerometry.

Measuring the metabolic of sea turtles is fundamental to understanding their ecology yet the presently available methods are limited. Accelerometry is a relatively new technique for estimating metabolic rate that has shown promise with a number of species but its utility with air-breathing divers is...

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Autores principales:	Lewis G Halsey, T Todd Jones, David R Jones, Nikolai Liebsch, David T Booth
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2011
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/6c77c80a39cc4bb7a3abc3eb2cd8c015
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spelling	oai:doaj.org-article:6c77c80a39cc4bb7a3abc3eb2cd8c0152021-11-18T06:48:41ZMeasuring energy expenditure in sub-adult and hatchling sea turtles via accelerometry.1932-620310.1371/journal.pone.0022311https://doaj.org/article/6c77c80a39cc4bb7a3abc3eb2cd8c0152011-01-01T00:00:00Zhttps://www.ncbi.nlm.nih.gov/pmc/articles/pmid/21829613/?tool=EBIhttps://doaj.org/toc/1932-6203Measuring the metabolic of sea turtles is fundamental to understanding their ecology yet the presently available methods are limited. Accelerometry is a relatively new technique for estimating metabolic rate that has shown promise with a number of species but its utility with air-breathing divers is not yet established. The present study undertakes laboratory experiments to investigate whether rate of oxygen uptake (VO2) at the surface in active sub-adult green turtles Chelonia mydas and hatchling loggerhead turtles Caretta caretta correlates with overall dynamic body acceleration (ODBA), a derivative of acceleration used as a proxy for metabolic rate. Six green turtles (25-44 kg) and two loggerhead turtles (20 g) were instrumented with tri-axial acceleration logging devices and placed singly into a respirometry chamber. The green turtles were able to submerge freely within a 1.5 m deep tank and the loggerhead turtles were tethered in water 16 cm deep so that they swam at the surface. A significant prediction equation for mean VO2 over an hour in a green turtle from measures of ODBA and mean flipper length (R(2) = 0.56) returned a mean estimate error across turtles of 8.0%. The range of temperatures used in the green turtle experiments (22-30 °C) had only a small effect on Vo₂. A VO2-ODBA equation for the loggerhead hatchling data was also significant (R(2) = 0.67). Together these data indicate the potential of the accelerometry technique for estimating energy expenditure in sea turtles, which may have important applications in sea turtle diving ecology, and also in conservation such as assessing turtle survival times when trapped underwater in fishing nets.Lewis G HalseyT Todd JonesDavid R JonesNikolai LiebschDavid T BoothPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 6, Iss 8, p e22311 (2011)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Lewis G Halsey T Todd Jones David R Jones Nikolai Liebsch David T Booth Measuring energy expenditure in sub-adult and hatchling sea turtles via accelerometry.
description	Measuring the metabolic of sea turtles is fundamental to understanding their ecology yet the presently available methods are limited. Accelerometry is a relatively new technique for estimating metabolic rate that has shown promise with a number of species but its utility with air-breathing divers is not yet established. The present study undertakes laboratory experiments to investigate whether rate of oxygen uptake (VO2) at the surface in active sub-adult green turtles Chelonia mydas and hatchling loggerhead turtles Caretta caretta correlates with overall dynamic body acceleration (ODBA), a derivative of acceleration used as a proxy for metabolic rate. Six green turtles (25-44 kg) and two loggerhead turtles (20 g) were instrumented with tri-axial acceleration logging devices and placed singly into a respirometry chamber. The green turtles were able to submerge freely within a 1.5 m deep tank and the loggerhead turtles were tethered in water 16 cm deep so that they swam at the surface. A significant prediction equation for mean VO2 over an hour in a green turtle from measures of ODBA and mean flipper length (R(2) = 0.56) returned a mean estimate error across turtles of 8.0%. The range of temperatures used in the green turtle experiments (22-30 °C) had only a small effect on Vo₂. A VO2-ODBA equation for the loggerhead hatchling data was also significant (R(2) = 0.67). Together these data indicate the potential of the accelerometry technique for estimating energy expenditure in sea turtles, which may have important applications in sea turtle diving ecology, and also in conservation such as assessing turtle survival times when trapped underwater in fishing nets.
format	article
author	Lewis G Halsey T Todd Jones David R Jones Nikolai Liebsch David T Booth
author_facet	Lewis G Halsey T Todd Jones David R Jones Nikolai Liebsch David T Booth
author_sort	Lewis G Halsey
title	Measuring energy expenditure in sub-adult and hatchling sea turtles via accelerometry.
title_short	Measuring energy expenditure in sub-adult and hatchling sea turtles via accelerometry.
title_full	Measuring energy expenditure in sub-adult and hatchling sea turtles via accelerometry.
title_fullStr	Measuring energy expenditure in sub-adult and hatchling sea turtles via accelerometry.
title_full_unstemmed	Measuring energy expenditure in sub-adult and hatchling sea turtles via accelerometry.
title_sort	measuring energy expenditure in sub-adult and hatchling sea turtles via accelerometry.
publisher	Public Library of Science (PLoS)
publishDate	2011
url	https://doaj.org/article/6c77c80a39cc4bb7a3abc3eb2cd8c015
work_keys_str_mv	AT lewisghalsey measuringenergyexpenditureinsubadultandhatchlingseaturtlesviaaccelerometry AT ttoddjones measuringenergyexpenditureinsubadultandhatchlingseaturtlesviaaccelerometry AT davidrjones measuringenergyexpenditureinsubadultandhatchlingseaturtlesviaaccelerometry AT nikolailiebsch measuringenergyexpenditureinsubadultandhatchlingseaturtlesviaaccelerometry AT davidtbooth measuringenergyexpenditureinsubadultandhatchlingseaturtlesviaaccelerometry
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Measuring energy expenditure in sub-adult and hatchling sea turtles via accelerometry.

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