Supplementary material from "Cool birds: first evidence of energy-saving nocturnal torpor in free-living common swifts Apus apus resting in their nests"
Daily torpor is a means of saving energy by controlled lowering of the metabolic rate (MR) during resting, usually coupled with a decrease in body temperature. We studied nocturnal daily torpor under natural conditions in free-living common swifts Apus apus resting in their nests as a family using t...
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ftdatacite:10.6084/m9.figshare.c.5918312.v1 2023-05-15T14:17:13+02:00 Supplementary material from "Cool birds: first evidence of energy-saving nocturnal torpor in free-living common swifts Apus apus resting in their nests" Wellbrock, Arndt H. J. Eckhardt, Luca R. H. Kelsey, Natalie A. Heldmaier, Gerhard Rozman, Jan Witte, Klaudia 2022 https://dx.doi.org/10.6084/m9.figshare.c.5918312.v1 https://rs.figshare.com/collections/Supplementary_material_from_Cool_birds_first_evidence_of_energy-saving_nocturnal_torpor_in_free-living_common_swifts_i_Apus_apus_i_resting_in_their_nests_/5918312/1 unknown The Royal Society https://dx.doi.org/10.1098/rsbl.2021.0675 https://dx.doi.org/10.6084/m9.figshare.c.5918312 Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode cc-by-4.0 CC-BY Ecology FOS Biological sciences 60801 Animal Behaviour article Collection 2022 ftdatacite https://doi.org/10.6084/m9.figshare.c.5918312.v1 https://doi.org/10.1098/rsbl.2021.0675 https://doi.org/10.6084/m9.figshare.c.5918312 2022-04-01T18:24:35Z Daily torpor is a means of saving energy by controlled lowering of the metabolic rate (MR) during resting, usually coupled with a decrease in body temperature. We studied nocturnal daily torpor under natural conditions in free-living common swifts Apus apus resting in their nests as a family using two non-invasive approaches. First, we monitored nest temperature ( T nest ) in up to 50 occupied nests per breeding season in 2010–2015. Drops in T nest were the first indication of torpor. Among 16 673 observations, we detected 423 events of substantial drops in T nest of on average 8.6°C. Second, we measured metabolic rate (MR) of the families inside nest-boxes prepared for calorimetric measurements during cold periods in the breeding seasons of 2017 and 2018. We measured oxygen consumption and carbon dioxide production using a mobile indirect respirometer and calculated the percentage reduction in MR. During six torpor events observed, MR was gradually reduced by on average 56% from the reference value followed by a decrease in T nest of on average 7.6°C. By contrast, MR only decreased by about 33% on nights without torpor. Our field data gave an indication of daily torpor, which is used as a strategy for energy saving in free-living common swifts. Article in Journal/Newspaper Apus apus DataCite Metadata Store (German National Library of Science and Technology) |
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collection |
DataCite Metadata Store (German National Library of Science and Technology) |
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topic |
Ecology FOS Biological sciences 60801 Animal Behaviour |
spellingShingle |
Ecology FOS Biological sciences 60801 Animal Behaviour Wellbrock, Arndt H. J. Eckhardt, Luca R. H. Kelsey, Natalie A. Heldmaier, Gerhard Rozman, Jan Witte, Klaudia Supplementary material from "Cool birds: first evidence of energy-saving nocturnal torpor in free-living common swifts Apus apus resting in their nests" |
topic_facet |
Ecology FOS Biological sciences 60801 Animal Behaviour |
description |
Daily torpor is a means of saving energy by controlled lowering of the metabolic rate (MR) during resting, usually coupled with a decrease in body temperature. We studied nocturnal daily torpor under natural conditions in free-living common swifts Apus apus resting in their nests as a family using two non-invasive approaches. First, we monitored nest temperature ( T nest ) in up to 50 occupied nests per breeding season in 2010–2015. Drops in T nest were the first indication of torpor. Among 16 673 observations, we detected 423 events of substantial drops in T nest of on average 8.6°C. Second, we measured metabolic rate (MR) of the families inside nest-boxes prepared for calorimetric measurements during cold periods in the breeding seasons of 2017 and 2018. We measured oxygen consumption and carbon dioxide production using a mobile indirect respirometer and calculated the percentage reduction in MR. During six torpor events observed, MR was gradually reduced by on average 56% from the reference value followed by a decrease in T nest of on average 7.6°C. By contrast, MR only decreased by about 33% on nights without torpor. Our field data gave an indication of daily torpor, which is used as a strategy for energy saving in free-living common swifts. |
format |
Article in Journal/Newspaper |
author |
Wellbrock, Arndt H. J. Eckhardt, Luca R. H. Kelsey, Natalie A. Heldmaier, Gerhard Rozman, Jan Witte, Klaudia |
author_facet |
Wellbrock, Arndt H. J. Eckhardt, Luca R. H. Kelsey, Natalie A. Heldmaier, Gerhard Rozman, Jan Witte, Klaudia |
author_sort |
Wellbrock, Arndt H. J. |
title |
Supplementary material from "Cool birds: first evidence of energy-saving nocturnal torpor in free-living common swifts Apus apus resting in their nests" |
title_short |
Supplementary material from "Cool birds: first evidence of energy-saving nocturnal torpor in free-living common swifts Apus apus resting in their nests" |
title_full |
Supplementary material from "Cool birds: first evidence of energy-saving nocturnal torpor in free-living common swifts Apus apus resting in their nests" |
title_fullStr |
Supplementary material from "Cool birds: first evidence of energy-saving nocturnal torpor in free-living common swifts Apus apus resting in their nests" |
title_full_unstemmed |
Supplementary material from "Cool birds: first evidence of energy-saving nocturnal torpor in free-living common swifts Apus apus resting in their nests" |
title_sort |
supplementary material from "cool birds: first evidence of energy-saving nocturnal torpor in free-living common swifts apus apus resting in their nests" |
publisher |
The Royal Society |
publishDate |
2022 |
url |
https://dx.doi.org/10.6084/m9.figshare.c.5918312.v1 https://rs.figshare.com/collections/Supplementary_material_from_Cool_birds_first_evidence_of_energy-saving_nocturnal_torpor_in_free-living_common_swifts_i_Apus_apus_i_resting_in_their_nests_/5918312/1 |
genre |
Apus apus |
genre_facet |
Apus apus |
op_relation |
https://dx.doi.org/10.1098/rsbl.2021.0675 https://dx.doi.org/10.6084/m9.figshare.c.5918312 |
op_rights |
Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode cc-by-4.0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.6084/m9.figshare.c.5918312.v1 https://doi.org/10.1098/rsbl.2021.0675 https://doi.org/10.6084/m9.figshare.c.5918312 |
_version_ |
1766289118143184896 |