Non-breeding fæder Ruffs Philomachus pugnax associate according to sex, not morphology
Capsule: Fæders (males that are female look-alikes) associate with males rather than females, at several different spatial scales. Aims: To test the prediction that the occurrence in space and time of fæders on ecological grounds should track that of females. Methods: The fraction of fæders was esti...
Published in: | Bird Study |
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Main Authors: | , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
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2008
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Online Access: | https://hdl.handle.net/11370/52123656-6d3b-47e4-ab88-9053917c2eb2 https://research.rug.nl/en/publications/52123656-6d3b-47e4-ab88-9053917c2eb2 https://doi.org/10.1080/00063650809461529 https://pure.rug.nl/ws/files/2755183/2008BirdStudyVerkuil.pdf |
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ftunigroningenpu:oai:pure.rug.nl:publications/52123656-6d3b-47e4-ab88-9053917c2eb2 2024-06-23T07:56:10+00:00 Non-breeding fæder Ruffs Philomachus pugnax associate according to sex, not morphology Verkuil, Yvonne I. Jukema, Joop Gills, Jennifer A. Karlionova, Natalia Melter, Johannes Hooijmeijer, Jos C.E.W. Piersma, Theunis 2008-11 application/pdf https://hdl.handle.net/11370/52123656-6d3b-47e4-ab88-9053917c2eb2 https://research.rug.nl/en/publications/52123656-6d3b-47e4-ab88-9053917c2eb2 https://doi.org/10.1080/00063650809461529 https://pure.rug.nl/ws/files/2755183/2008BirdStudyVerkuil.pdf eng eng https://research.rug.nl/en/publications/52123656-6d3b-47e4-ab88-9053917c2eb2 info:eu-repo/semantics/openAccess Verkuil , Y I , Jukema , J , Gills , J A , Karlionova , N , Melter , J , Hooijmeijer , J C E W & Piersma , T 2008 , ' Non-breeding fæder Ruffs Philomachus pugnax associate according to sex, not morphology ' , Bird Study , vol. 55 , no. 3 , pp. 241-246 . https://doi.org/10.1080/00063650809461529 REPRODUCTIVE BEHAVIORS EVOLUTION LEKKING MOLT STRATEGIES BOURGEOIS MIGRATION article 2008 ftunigroningenpu https://doi.org/10.1080/00063650809461529 2024-06-03T16:08:16Z Capsule: Fæders (males that are female look-alikes) associate with males rather than females, at several different spatial scales. Aims: To test the prediction that the occurrence in space and time of fæders on ecological grounds should track that of females. Methods: The fraction of fæders was estimated in five morphometric data sets that were collected over four decades in four different countries in three different seasons (comprising 9133 Ruffs). The regression of fæder–female fractions was tested against the null model assuming that the number of fæders is 1.0% of females. Results: The fraction of fæders in catches averaged 1.03%, varying between 0.3% in autumn in the UK up to 0.85% in Sénégal in winter and 1.04% in The Netherlands in spring. On a stopover in The Netherlands the fraction decreased from 1.3% to 0.7% when the females started to arrive. At all four spatial and temporal scales the regression of fæder–female fractions deviated from the null model: we found high fractions of fæders in catches with low fractions of females, indicating that fæders rather associate with the larger-sized ´normal´ males. Conclusion: We suggest that fæders spend the winter, and migrate with, the larger-sized lekking males, and we propose that any survival costs associated with the use of suboptimal habitats is compensated by higher reproductive success as sneakers on leks. Article in Journal/Newspaper Philomachus pugnax University of Groningen research database Bourgeois ENVELOPE(-66.996,-66.996,-67.628,-67.628) Bird Study 55 3 241 246 |
institution |
Open Polar |
collection |
University of Groningen research database |
op_collection_id |
ftunigroningenpu |
language |
English |
topic |
REPRODUCTIVE BEHAVIORS EVOLUTION LEKKING MOLT STRATEGIES BOURGEOIS MIGRATION |
spellingShingle |
REPRODUCTIVE BEHAVIORS EVOLUTION LEKKING MOLT STRATEGIES BOURGEOIS MIGRATION Verkuil, Yvonne I. Jukema, Joop Gills, Jennifer A. Karlionova, Natalia Melter, Johannes Hooijmeijer, Jos C.E.W. Piersma, Theunis Non-breeding fæder Ruffs Philomachus pugnax associate according to sex, not morphology |
topic_facet |
REPRODUCTIVE BEHAVIORS EVOLUTION LEKKING MOLT STRATEGIES BOURGEOIS MIGRATION |
description |
Capsule: Fæders (males that are female look-alikes) associate with males rather than females, at several different spatial scales. Aims: To test the prediction that the occurrence in space and time of fæders on ecological grounds should track that of females. Methods: The fraction of fæders was estimated in five morphometric data sets that were collected over four decades in four different countries in three different seasons (comprising 9133 Ruffs). The regression of fæder–female fractions was tested against the null model assuming that the number of fæders is 1.0% of females. Results: The fraction of fæders in catches averaged 1.03%, varying between 0.3% in autumn in the UK up to 0.85% in Sénégal in winter and 1.04% in The Netherlands in spring. On a stopover in The Netherlands the fraction decreased from 1.3% to 0.7% when the females started to arrive. At all four spatial and temporal scales the regression of fæder–female fractions deviated from the null model: we found high fractions of fæders in catches with low fractions of females, indicating that fæders rather associate with the larger-sized ´normal´ males. Conclusion: We suggest that fæders spend the winter, and migrate with, the larger-sized lekking males, and we propose that any survival costs associated with the use of suboptimal habitats is compensated by higher reproductive success as sneakers on leks. |
format |
Article in Journal/Newspaper |
author |
Verkuil, Yvonne I. Jukema, Joop Gills, Jennifer A. Karlionova, Natalia Melter, Johannes Hooijmeijer, Jos C.E.W. Piersma, Theunis |
author_facet |
Verkuil, Yvonne I. Jukema, Joop Gills, Jennifer A. Karlionova, Natalia Melter, Johannes Hooijmeijer, Jos C.E.W. Piersma, Theunis |
author_sort |
Verkuil, Yvonne I. |
title |
Non-breeding fæder Ruffs Philomachus pugnax associate according to sex, not morphology |
title_short |
Non-breeding fæder Ruffs Philomachus pugnax associate according to sex, not morphology |
title_full |
Non-breeding fæder Ruffs Philomachus pugnax associate according to sex, not morphology |
title_fullStr |
Non-breeding fæder Ruffs Philomachus pugnax associate according to sex, not morphology |
title_full_unstemmed |
Non-breeding fæder Ruffs Philomachus pugnax associate according to sex, not morphology |
title_sort |
non-breeding fæder ruffs philomachus pugnax associate according to sex, not morphology |
publishDate |
2008 |
url |
https://hdl.handle.net/11370/52123656-6d3b-47e4-ab88-9053917c2eb2 https://research.rug.nl/en/publications/52123656-6d3b-47e4-ab88-9053917c2eb2 https://doi.org/10.1080/00063650809461529 https://pure.rug.nl/ws/files/2755183/2008BirdStudyVerkuil.pdf |
long_lat |
ENVELOPE(-66.996,-66.996,-67.628,-67.628) |
geographic |
Bourgeois |
geographic_facet |
Bourgeois |
genre |
Philomachus pugnax |
genre_facet |
Philomachus pugnax |
op_source |
Verkuil , Y I , Jukema , J , Gills , J A , Karlionova , N , Melter , J , Hooijmeijer , J C E W & Piersma , T 2008 , ' Non-breeding fæder Ruffs Philomachus pugnax associate according to sex, not morphology ' , Bird Study , vol. 55 , no. 3 , pp. 241-246 . https://doi.org/10.1080/00063650809461529 |
op_relation |
https://research.rug.nl/en/publications/52123656-6d3b-47e4-ab88-9053917c2eb2 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1080/00063650809461529 |
container_title |
Bird Study |
container_volume |
55 |
container_issue |
3 |
container_start_page |
241 |
op_container_end_page |
246 |
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1802649092986241024 |