Biparental incubation-scheduling:no experimental evidence for major energetic constraints
Incubation is energetically demanding, but it is debated whether these demands constrain incubation-scheduling (i.e., the length, constancy, and timing of incubation bouts) in cases where both parents incubate. Using 2 methods, we experimentally reduced the energetic demands of incubation in the sem...
Published in: | Behavioral Ecology |
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Main Authors: | , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
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2015
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Online Access: | https://research-portal.st-andrews.ac.uk/en/researchoutput/biparental-incubationscheduling(ed1333b4-4a43-4768-9936-7c15c4431acc).html https://doi.org/10.1093/beheco/aru156 https://research-repository.st-andrews.ac.uk/bitstream/10023/6670/1/Cresswell_2015_BE_Biparental_CC.pdf http://beheco.oxfordjournals.org/content/26/1/30/suppl/DC1 |
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ftunstandrewcris:oai:research-portal.st-andrews.ac.uk:publications/ed1333b4-4a43-4768-9936-7c15c4431acc 2024-06-23T07:50:45+00:00 Biparental incubation-scheduling:no experimental evidence for major energetic constraints Bulla, M Cresswell, Will Rutten, A Valcu, M Kempenaers, B 2015 application/pdf https://research-portal.st-andrews.ac.uk/en/researchoutput/biparental-incubationscheduling(ed1333b4-4a43-4768-9936-7c15c4431acc).html https://doi.org/10.1093/beheco/aru156 https://research-repository.st-andrews.ac.uk/bitstream/10023/6670/1/Cresswell_2015_BE_Biparental_CC.pdf http://beheco.oxfordjournals.org/content/26/1/30/suppl/DC1 eng eng https://research-portal.st-andrews.ac.uk/en/researchoutput/biparental-incubationscheduling(ed1333b4-4a43-4768-9936-7c15c4431acc).html info:eu-repo/semantics/openAccess Bulla , M , Cresswell , W , Rutten , A , Valcu , M & Kempenaers , B 2015 , ' Biparental incubation-scheduling : no experimental evidence for major energetic constraints ' , Behavioral Ecology , vol. 26 , no. 1 , pp. 30-37 . https://doi.org/10.1093/beheco/aru156 Artic Baparental incubation Calidris pusilla Constancy Cross-over design Energetic constraints Energetic demands Incubation bout length Replication Scheduling Semipalmated sandpiper Shorebird Statistical power article 2015 ftunstandrewcris https://doi.org/10.1093/beheco/aru156 2024-06-13T00:43:04Z Incubation is energetically demanding, but it is debated whether these demands constrain incubation-scheduling (i.e., the length, constancy, and timing of incubation bouts) in cases where both parents incubate. Using 2 methods, we experimentally reduced the energetic demands of incubation in the semipalmated sandpiper, a biparental shorebird breeding in the harsh conditions of the high Arctic. First, we decreased the demands of incubation for 1 parent only by exchanging 1 of the 4 eggs for an artificial egg that heated up when the focal bird incubated. Second, we reanalyzed the data from the only published experimental study that has explicitly tested energetic constraints on incubation-scheduling in a biparentally incubating species (Cresswell et al. 2003). In this experiment, the energetic demands of incubation were decreased for both parents by insulating the nest cup. We expected that the treated birds, in both experiments, would change the length of their incubation bouts, if biparental incubation-scheduling is energetically constrained. However, we found no evidence that heating or insulation of the nest affected the length of incubation bouts: the combined effect of both experiments was an increase in bout length of 3.6min (95% CI: −33 to 40), which is equivalent to a 0.5% increase in the length of the average incubation bout. These results demonstrate that the observed biparental incubation-scheduling in semipalmated sandpipers is not primarily driven by energetic constraints and therefore by the state of the incubating bird, implying that we still do not understand the factors driving biparental incubation-scheduling. Article in Journal/Newspaper Arctic University of St Andrews: Research Portal Arctic Behavioral Ecology 26 1 30 37 |
institution |
Open Polar |
collection |
University of St Andrews: Research Portal |
op_collection_id |
ftunstandrewcris |
language |
English |
topic |
Artic Baparental incubation Calidris pusilla Constancy Cross-over design Energetic constraints Energetic demands Incubation bout length Replication Scheduling Semipalmated sandpiper Shorebird Statistical power |
spellingShingle |
Artic Baparental incubation Calidris pusilla Constancy Cross-over design Energetic constraints Energetic demands Incubation bout length Replication Scheduling Semipalmated sandpiper Shorebird Statistical power Bulla, M Cresswell, Will Rutten, A Valcu, M Kempenaers, B Biparental incubation-scheduling:no experimental evidence for major energetic constraints |
topic_facet |
Artic Baparental incubation Calidris pusilla Constancy Cross-over design Energetic constraints Energetic demands Incubation bout length Replication Scheduling Semipalmated sandpiper Shorebird Statistical power |
description |
Incubation is energetically demanding, but it is debated whether these demands constrain incubation-scheduling (i.e., the length, constancy, and timing of incubation bouts) in cases where both parents incubate. Using 2 methods, we experimentally reduced the energetic demands of incubation in the semipalmated sandpiper, a biparental shorebird breeding in the harsh conditions of the high Arctic. First, we decreased the demands of incubation for 1 parent only by exchanging 1 of the 4 eggs for an artificial egg that heated up when the focal bird incubated. Second, we reanalyzed the data from the only published experimental study that has explicitly tested energetic constraints on incubation-scheduling in a biparentally incubating species (Cresswell et al. 2003). In this experiment, the energetic demands of incubation were decreased for both parents by insulating the nest cup. We expected that the treated birds, in both experiments, would change the length of their incubation bouts, if biparental incubation-scheduling is energetically constrained. However, we found no evidence that heating or insulation of the nest affected the length of incubation bouts: the combined effect of both experiments was an increase in bout length of 3.6min (95% CI: −33 to 40), which is equivalent to a 0.5% increase in the length of the average incubation bout. These results demonstrate that the observed biparental incubation-scheduling in semipalmated sandpipers is not primarily driven by energetic constraints and therefore by the state of the incubating bird, implying that we still do not understand the factors driving biparental incubation-scheduling. |
format |
Article in Journal/Newspaper |
author |
Bulla, M Cresswell, Will Rutten, A Valcu, M Kempenaers, B |
author_facet |
Bulla, M Cresswell, Will Rutten, A Valcu, M Kempenaers, B |
author_sort |
Bulla, M |
title |
Biparental incubation-scheduling:no experimental evidence for major energetic constraints |
title_short |
Biparental incubation-scheduling:no experimental evidence for major energetic constraints |
title_full |
Biparental incubation-scheduling:no experimental evidence for major energetic constraints |
title_fullStr |
Biparental incubation-scheduling:no experimental evidence for major energetic constraints |
title_full_unstemmed |
Biparental incubation-scheduling:no experimental evidence for major energetic constraints |
title_sort |
biparental incubation-scheduling:no experimental evidence for major energetic constraints |
publishDate |
2015 |
url |
https://research-portal.st-andrews.ac.uk/en/researchoutput/biparental-incubationscheduling(ed1333b4-4a43-4768-9936-7c15c4431acc).html https://doi.org/10.1093/beheco/aru156 https://research-repository.st-andrews.ac.uk/bitstream/10023/6670/1/Cresswell_2015_BE_Biparental_CC.pdf http://beheco.oxfordjournals.org/content/26/1/30/suppl/DC1 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic |
genre_facet |
Arctic |
op_source |
Bulla , M , Cresswell , W , Rutten , A , Valcu , M & Kempenaers , B 2015 , ' Biparental incubation-scheduling : no experimental evidence for major energetic constraints ' , Behavioral Ecology , vol. 26 , no. 1 , pp. 30-37 . https://doi.org/10.1093/beheco/aru156 |
op_relation |
https://research-portal.st-andrews.ac.uk/en/researchoutput/biparental-incubationscheduling(ed1333b4-4a43-4768-9936-7c15c4431acc).html |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1093/beheco/aru156 |
container_title |
Behavioral Ecology |
container_volume |
26 |
container_issue |
1 |
container_start_page |
30 |
op_container_end_page |
37 |
_version_ |
1802641661194403840 |