Male weasels decrease activity and energy expenditure in response to high ambient temperatures.

The heat dissipation limit (HDL) hypothesis suggests that the capacity of endotherms to dissipate body heat may impose constraints on their energy expenditure. Specifically, this hypothesis predicts that endotherms should avoid the detrimental consequences of hyperthermia by lowering their energy ex...

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Autores principales:	Karol Zub, Quinn E Fletcher, Paulina A Szafrańska, Marek Konarzewski
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2013
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/4aa1a51f64bf49fca1f34cba9fe12be8
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spelling	oai:doaj.org-article:4aa1a51f64bf49fca1f34cba9fe12be82021-11-18T08:59:14ZMale weasels decrease activity and energy expenditure in response to high ambient temperatures.1932-620310.1371/journal.pone.0072646https://doaj.org/article/4aa1a51f64bf49fca1f34cba9fe12be82013-01-01T00:00:00Zhttps://www.ncbi.nlm.nih.gov/pmc/articles/pmid/23977336/pdf/?tool=EBIhttps://doaj.org/toc/1932-6203The heat dissipation limit (HDL) hypothesis suggests that the capacity of endotherms to dissipate body heat may impose constraints on their energy expenditure. Specifically, this hypothesis predicts that endotherms should avoid the detrimental consequences of hyperthermia by lowering their energy expenditure and reducing their activity in response to high ambient temperatures (T(a)). We used an extensive data set on the daily energy expenditure (DEE, n = 27) and the daily activity time (AT, n = 48) of male weasels (Mustela nivalis) during the spring and summer breeding season to test these predictions. We found that T(a) was related in a "hump-shaped" (i.e. convex) manner to AT, DEE, resting metabolic rate (RMR) and metabolic scope (the ratio of DEE to RMR). These results support the HDL hypothesis because in response to warm Tas male weasels reduced their AT, DEE, and RMR. Although the activity and energy expenditure of large endotherms are most likely to be constrained in response to warm Tas because they are less able to dissipate heat, our results suggest that small endotherms may also experience constraints consistent with the HDL hypothesis.Karol ZubQuinn E FletcherPaulina A SzafrańskaMarek KonarzewskiPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 8, Iss 8, p e72646 (2013)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Karol Zub Quinn E Fletcher Paulina A Szafrańska Marek Konarzewski Male weasels decrease activity and energy expenditure in response to high ambient temperatures.
description	The heat dissipation limit (HDL) hypothesis suggests that the capacity of endotherms to dissipate body heat may impose constraints on their energy expenditure. Specifically, this hypothesis predicts that endotherms should avoid the detrimental consequences of hyperthermia by lowering their energy expenditure and reducing their activity in response to high ambient temperatures (T(a)). We used an extensive data set on the daily energy expenditure (DEE, n = 27) and the daily activity time (AT, n = 48) of male weasels (Mustela nivalis) during the spring and summer breeding season to test these predictions. We found that T(a) was related in a "hump-shaped" (i.e. convex) manner to AT, DEE, resting metabolic rate (RMR) and metabolic scope (the ratio of DEE to RMR). These results support the HDL hypothesis because in response to warm Tas male weasels reduced their AT, DEE, and RMR. Although the activity and energy expenditure of large endotherms are most likely to be constrained in response to warm Tas because they are less able to dissipate heat, our results suggest that small endotherms may also experience constraints consistent with the HDL hypothesis.
format	article
author	Karol Zub Quinn E Fletcher Paulina A Szafrańska Marek Konarzewski
author_facet	Karol Zub Quinn E Fletcher Paulina A Szafrańska Marek Konarzewski
author_sort	Karol Zub
title	Male weasels decrease activity and energy expenditure in response to high ambient temperatures.
title_short	Male weasels decrease activity and energy expenditure in response to high ambient temperatures.
title_full	Male weasels decrease activity and energy expenditure in response to high ambient temperatures.
title_fullStr	Male weasels decrease activity and energy expenditure in response to high ambient temperatures.
title_full_unstemmed	Male weasels decrease activity and energy expenditure in response to high ambient temperatures.
title_sort	male weasels decrease activity and energy expenditure in response to high ambient temperatures.
publisher	Public Library of Science (PLoS)
publishDate	2013
url	https://doaj.org/article/4aa1a51f64bf49fca1f34cba9fe12be8
work_keys_str_mv	AT karolzub maleweaselsdecreaseactivityandenergyexpenditureinresponsetohighambienttemperatures AT quinnefletcher maleweaselsdecreaseactivityandenergyexpenditureinresponsetohighambienttemperatures AT paulinaaszafranska maleweaselsdecreaseactivityandenergyexpenditureinresponsetohighambienttemperatures AT marekkonarzewski maleweaselsdecreaseactivityandenergyexpenditureinresponsetohighambienttemperatures
_version_	1718421079351885824

Male weasels decrease activity and energy expenditure in response to high ambient temperatures.

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