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...

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Published in:Bird Study
Main Authors: Verkuil, Yvonne I., Jukema, Joop, Gills, Jennifer A., Karlionova, Natalia, Melter, Johannes, Hooijmeijer, Jos C.E.W., Piersma, Theunis
Format: Article in Journal/Newspaper
Language:English
Published: 2008
Subjects:
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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record_format openpolar
spelling 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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