Differential timing and latitudinal variation in sex ratio of Aquatic Warblers during the autumn migration
(2017) In Die Naturwissenschaften 104(11-12). p.101-101- Abstract
Differential migration has been extensively reported in spring, but less so in autumn, particularly in relation to sex in monomorphic bird species. Here, we analysed the autumn passage of a monomorphic, globally threatened passerine, the Aquatic Warbler Acrocephalus paludicola throughout Western Europe, with regard to age and sex. We showed that, overall, adults migrated earlier than first-year birds, and males migrated earlier than females during the autumn migration. This may be caused by an overall social dominance of adults over immatures, and differentiated migration strategy of males and females. In addition, we found male-skewed sex proportions, with a tendency to an equalised ratio in more southern stopover sites. This may... (More)
Differential migration has been extensively reported in spring, but less so in autumn, particularly in relation to sex in monomorphic bird species. Here, we analysed the autumn passage of a monomorphic, globally threatened passerine, the Aquatic Warbler Acrocephalus paludicola throughout Western Europe, with regard to age and sex. We showed that, overall, adults migrated earlier than first-year birds, and males migrated earlier than females during the autumn migration. This may be caused by an overall social dominance of adults over immatures, and differentiated migration strategy of males and females. In addition, we found male-skewed sex proportions, with a tendency to an equalised ratio in more southern stopover sites. This may indicate a male bias in the global population or different migration strategies of the sexes. Differential migration may cause the age and sex classes to be exposed differently to various threats affecting demographic structure of the species.
(Less)
- author
- Wojczulanis-Jakubas, Katarzyna ; Chrostek, Małgorzata E. ; Jiguet, Frédéric ; Martínez, Carlos Zumalacárregui ; Miguélez, David and Neto, Júlio M. LU
- organization
- publishing date
- 2017-11-14
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- Acrocephalus paludicola, Migration strategy, Sex proportion
- in
- Die Naturwissenschaften
- volume
- 104
- issue
- 11-12
- pages
- 1 pages
- publisher
- Springer
- external identifiers
-
- pmid:29138941
- wos:000415294200003
- scopus:85038250142
- ISSN
- 1432-1904
- DOI
- 10.1007/s00114-017-1525-x
- language
- English
- LU publication?
- yes
- id
- fd6ec294-eed4-4422-b4f2-e59fb327f4aa
- date added to LUP
- 2018-01-04 10:16:25
- date last changed
- 2024-09-16 13:37:09
@article{fd6ec294-eed4-4422-b4f2-e59fb327f4aa,
abstract = {{<p>Differential migration has been extensively reported in spring, but less so in autumn, particularly in relation to sex in monomorphic bird species. Here, we analysed the autumn passage of a monomorphic, globally threatened passerine, the Aquatic Warbler Acrocephalus paludicola throughout Western Europe, with regard to age and sex. We showed that, overall, adults migrated earlier than first-year birds, and males migrated earlier than females during the autumn migration. This may be caused by an overall social dominance of adults over immatures, and differentiated migration strategy of males and females. In addition, we found male-skewed sex proportions, with a tendency to an equalised ratio in more southern stopover sites. This may indicate a male bias in the global population or different migration strategies of the sexes. Differential migration may cause the age and sex classes to be exposed differently to various threats affecting demographic structure of the species.</p>}},
author = {{Wojczulanis-Jakubas, Katarzyna and Chrostek, Małgorzata E. and Jiguet, Frédéric and Martínez, Carlos Zumalacárregui and Miguélez, David and Neto, Júlio M.}},
issn = {{1432-1904}},
keywords = {{Acrocephalus paludicola; Migration strategy; Sex proportion}},
language = {{eng}},
month = {{11}},
number = {{11-12}},
pages = {{101--101}},
publisher = {{Springer}},
series = {{Die Naturwissenschaften}},
title = {{Differential timing and latitudinal variation in sex ratio of Aquatic Warblers during the autumn migration}},
url = {{http://dx.doi.org/10.1007/s00114-017-1525-x}},
doi = {{10.1007/s00114-017-1525-x}},
volume = {{104}},
year = {{2017}},
}