Extrinsic factors, endocrine mechanisms, and behavioral indicators of migratory restlessness in wintering whooper swans (Cygnus cygnus).
Extrinsic factors, endocrine mechanisms, and behavioral indicators of migratory restlessness were studied in wintering whooper swans (Cygnus cygnus) in the Sanmenxia Swan National Wetland Park in western Henan Province, central China. First, the fecal glucocorticoid metabolite (FGM) concentration wa...
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Nature Publishing Group
2021
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Online Access: | http://researchonline.ljmu.ac.uk/id/eprint/15208/ https://researchonline.ljmu.ac.uk/id/eprint/15208/1/Extrinsic%20factors,%20endocrine%20mechanisms,%20and%20behavioral%20indicators%20of%20migratory%20restlessness%20in%20wintering%20whooper%20swans%20%28Cygnus%20cygnus%29.pdf https://doi.org/10.1038/s41598-021-92031-3 |
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ftliverpooljmu:oai:researchonline.ljmu.ac.uk:15208 2023-05-15T15:59:48+02:00 Extrinsic factors, endocrine mechanisms, and behavioral indicators of migratory restlessness in wintering whooper swans (Cygnus cygnus). Yang, L Wang, W Sun, P Huang, S Gao, R Kong, D Ru, W Wronski, T Zhang, G 2021-06-16 text http://researchonline.ljmu.ac.uk/id/eprint/15208/ https://researchonline.ljmu.ac.uk/id/eprint/15208/1/Extrinsic%20factors,%20endocrine%20mechanisms,%20and%20behavioral%20indicators%20of%20migratory%20restlessness%20in%20wintering%20whooper%20swans%20%28Cygnus%20cygnus%29.pdf https://doi.org/10.1038/s41598-021-92031-3 en eng Nature Publishing Group https://researchonline.ljmu.ac.uk/id/eprint/15208/1/Extrinsic%20factors,%20endocrine%20mechanisms,%20and%20behavioral%20indicators%20of%20migratory%20restlessness%20in%20wintering%20whooper%20swans%20%28Cygnus%20cygnus%29.pdf Yang, L, Wang, W, Sun, P, Huang, S, Gao, R, Kong, D, Ru, W, Wronski, T and Zhang, G (2021) Extrinsic factors, endocrine mechanisms, and behavioral indicators of migratory restlessness in wintering whooper swans (Cygnus cygnus). Scientific Reports, 11 (1). ISSN 2045-2322 doi:10.1038/s41598-021-92031-3 cc_by CC-BY QH Natural history QH301 Biology QL Zoology QP Physiology Article PeerReviewed 2021 ftliverpooljmu https://doi.org/10.1038/s41598-021-92031-3 2022-01-09T06:57:55Z Extrinsic factors, endocrine mechanisms, and behavioral indicators of migratory restlessness were studied in wintering whooper swans (Cygnus cygnus) in the Sanmenxia Swan National Wetland Park in western Henan Province, central China. First, the fecal glucocorticoid metabolite (FGM) concentration was established and related to mean air temperature or photo period (day length) using simple linear or non-linear regression models. After a model selection procedure, the best fitted model revealed that an increase of FGM concentration was associated with an increase in the squared mean air temperature (R2 = 0.88). Other models showed an increasing FGM concentration to correspond with increasing values of day length, squared day length, and mean air temperature-however without statistical support. In a second step, behavioral frequencies of seven behaviors were condensed into three behavioral principal components (PCs) using principal components analysis. Behavioral PCs largely corresponded to three activity phases described for wintering whooper swans in central China and were correlated with the FGM concentration using Spearman's rank-order correlations. Results revealed a significant correlation between FGM and behavioral PC2 (positive factor loadings from vigilance and preening, negative loading from foraging). Finally, we tested for an effect of behavioral PCs on changes in winter home range size using a set of multiple linear regression models. Results of averaged model parameter estimates showed only the behavioral PC3 (positive factor loadings from fighting and calling, negative loading from locomotion) had a marginal significant effect on home range size. Results confirmed findings of previous studies on migratory restlessness in whooper swans. However, due to the small sample size (N = 15 weeks) the effect of PC3 on home range size was weak and should be viewed with caution. Article in Journal/Newspaper Cygnus cygnus Liverpool John Moores University: LJMU Research Online Scientific Reports 11 1 |
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Liverpool John Moores University: LJMU Research Online |
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ftliverpooljmu |
language |
English |
topic |
QH Natural history QH301 Biology QL Zoology QP Physiology |
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QH Natural history QH301 Biology QL Zoology QP Physiology Yang, L Wang, W Sun, P Huang, S Gao, R Kong, D Ru, W Wronski, T Zhang, G Extrinsic factors, endocrine mechanisms, and behavioral indicators of migratory restlessness in wintering whooper swans (Cygnus cygnus). |
topic_facet |
QH Natural history QH301 Biology QL Zoology QP Physiology |
description |
Extrinsic factors, endocrine mechanisms, and behavioral indicators of migratory restlessness were studied in wintering whooper swans (Cygnus cygnus) in the Sanmenxia Swan National Wetland Park in western Henan Province, central China. First, the fecal glucocorticoid metabolite (FGM) concentration was established and related to mean air temperature or photo period (day length) using simple linear or non-linear regression models. After a model selection procedure, the best fitted model revealed that an increase of FGM concentration was associated with an increase in the squared mean air temperature (R2 = 0.88). Other models showed an increasing FGM concentration to correspond with increasing values of day length, squared day length, and mean air temperature-however without statistical support. In a second step, behavioral frequencies of seven behaviors were condensed into three behavioral principal components (PCs) using principal components analysis. Behavioral PCs largely corresponded to three activity phases described for wintering whooper swans in central China and were correlated with the FGM concentration using Spearman's rank-order correlations. Results revealed a significant correlation between FGM and behavioral PC2 (positive factor loadings from vigilance and preening, negative loading from foraging). Finally, we tested for an effect of behavioral PCs on changes in winter home range size using a set of multiple linear regression models. Results of averaged model parameter estimates showed only the behavioral PC3 (positive factor loadings from fighting and calling, negative loading from locomotion) had a marginal significant effect on home range size. Results confirmed findings of previous studies on migratory restlessness in whooper swans. However, due to the small sample size (N = 15 weeks) the effect of PC3 on home range size was weak and should be viewed with caution. |
format |
Article in Journal/Newspaper |
author |
Yang, L Wang, W Sun, P Huang, S Gao, R Kong, D Ru, W Wronski, T Zhang, G |
author_facet |
Yang, L Wang, W Sun, P Huang, S Gao, R Kong, D Ru, W Wronski, T Zhang, G |
author_sort |
Yang, L |
title |
Extrinsic factors, endocrine mechanisms, and behavioral indicators of migratory restlessness in wintering whooper swans (Cygnus cygnus). |
title_short |
Extrinsic factors, endocrine mechanisms, and behavioral indicators of migratory restlessness in wintering whooper swans (Cygnus cygnus). |
title_full |
Extrinsic factors, endocrine mechanisms, and behavioral indicators of migratory restlessness in wintering whooper swans (Cygnus cygnus). |
title_fullStr |
Extrinsic factors, endocrine mechanisms, and behavioral indicators of migratory restlessness in wintering whooper swans (Cygnus cygnus). |
title_full_unstemmed |
Extrinsic factors, endocrine mechanisms, and behavioral indicators of migratory restlessness in wintering whooper swans (Cygnus cygnus). |
title_sort |
extrinsic factors, endocrine mechanisms, and behavioral indicators of migratory restlessness in wintering whooper swans (cygnus cygnus). |
publisher |
Nature Publishing Group |
publishDate |
2021 |
url |
http://researchonline.ljmu.ac.uk/id/eprint/15208/ https://researchonline.ljmu.ac.uk/id/eprint/15208/1/Extrinsic%20factors,%20endocrine%20mechanisms,%20and%20behavioral%20indicators%20of%20migratory%20restlessness%20in%20wintering%20whooper%20swans%20%28Cygnus%20cygnus%29.pdf https://doi.org/10.1038/s41598-021-92031-3 |
genre |
Cygnus cygnus |
genre_facet |
Cygnus cygnus |
op_relation |
https://researchonline.ljmu.ac.uk/id/eprint/15208/1/Extrinsic%20factors,%20endocrine%20mechanisms,%20and%20behavioral%20indicators%20of%20migratory%20restlessness%20in%20wintering%20whooper%20swans%20%28Cygnus%20cygnus%29.pdf Yang, L, Wang, W, Sun, P, Huang, S, Gao, R, Kong, D, Ru, W, Wronski, T and Zhang, G (2021) Extrinsic factors, endocrine mechanisms, and behavioral indicators of migratory restlessness in wintering whooper swans (Cygnus cygnus). Scientific Reports, 11 (1). ISSN 2045-2322 doi:10.1038/s41598-021-92031-3 |
op_rights |
cc_by |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1038/s41598-021-92031-3 |
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Scientific Reports |
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