Flight feather shaft structure of two warbler species with different moult schedules: a study using high-resolution X-ray imaging
(2010) In Journal of Zoology 280(2). p.163-170- Abstract
- Plumage constitutes a significant component of the somatic investment of birds. A detailed investigation of feathers and moult can help to uncover trade-offs involved in somatic investment decisions, the sources of some of the costs birds have to pay and the potential fitness consequences. We used micro-computed tomography imaging to study the second moment of area, a structural parameter that is one determinant of bending stiffness and the cortex volume of flight feather shafts of two sister taxa, the willow warbler Phylloscopus trochilus, a migratory species with two annual moults, and the chiffchaff Phylloscopus collybita, a migrant with one annual post-nuptial moult. Juvenile and adult willow warbler and chiffchaff feathers, all grown... (More)
- Plumage constitutes a significant component of the somatic investment of birds. A detailed investigation of feathers and moult can help to uncover trade-offs involved in somatic investment decisions, the sources of some of the costs birds have to pay and the potential fitness consequences. We used micro-computed tomography imaging to study the second moment of area, a structural parameter that is one determinant of bending stiffness and the cortex volume of flight feather shafts of two sister taxa, the willow warbler Phylloscopus trochilus, a migratory species with two annual moults, and the chiffchaff Phylloscopus collybita, a migrant with one annual post-nuptial moult. Juvenile and adult willow warbler and chiffchaff feathers, all grown on the breeding grounds, are structurally very similar to each other. Willow warbler feathers grown during moult on the wintering grounds, however, have a significantly higher second moment of area and a significantly larger cortex volume than all the other feather types. We discuss the possibility that the seasonal variability of willow warbler feathers may be an adaptive structural reflection of a moult-migration strategy that has allowed this species to occupy large breeding and wintering ranges. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/1547255
- author
- Weber, Thomas LU ; Kranenbarg, S. ; Hedenström, Anders LU ; Waarsing, J. H. and Weinans, H.
- organization
- publishing date
- 2010
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- chiffchaff, willow warbler, migration, moult, rachis, mu-CT imaging
- in
- Journal of Zoology
- volume
- 280
- issue
- 2
- pages
- 163 - 170
- publisher
- Wiley-Blackwell
- external identifiers
-
- wos:000273951800003
- scopus:79955153808
- ISSN
- 0952-8369
- DOI
- 10.1111/j.1469-7998.2009.00644.x
- language
- English
- LU publication?
- yes
- id
- c10166a5-92db-4bc3-a3d0-af1321998700 (old id 1547255)
- date added to LUP
- 2016-04-01 09:54:15
- date last changed
- 2022-04-11 23:56:23
@article{c10166a5-92db-4bc3-a3d0-af1321998700,
abstract = {{Plumage constitutes a significant component of the somatic investment of birds. A detailed investigation of feathers and moult can help to uncover trade-offs involved in somatic investment decisions, the sources of some of the costs birds have to pay and the potential fitness consequences. We used micro-computed tomography imaging to study the second moment of area, a structural parameter that is one determinant of bending stiffness and the cortex volume of flight feather shafts of two sister taxa, the willow warbler Phylloscopus trochilus, a migratory species with two annual moults, and the chiffchaff Phylloscopus collybita, a migrant with one annual post-nuptial moult. Juvenile and adult willow warbler and chiffchaff feathers, all grown on the breeding grounds, are structurally very similar to each other. Willow warbler feathers grown during moult on the wintering grounds, however, have a significantly higher second moment of area and a significantly larger cortex volume than all the other feather types. We discuss the possibility that the seasonal variability of willow warbler feathers may be an adaptive structural reflection of a moult-migration strategy that has allowed this species to occupy large breeding and wintering ranges.}},
author = {{Weber, Thomas and Kranenbarg, S. and Hedenström, Anders and Waarsing, J. H. and Weinans, H.}},
issn = {{0952-8369}},
keywords = {{chiffchaff; willow warbler; migration; moult; rachis; mu-CT imaging}},
language = {{eng}},
number = {{2}},
pages = {{163--170}},
publisher = {{Wiley-Blackwell}},
series = {{Journal of Zoology}},
title = {{Flight feather shaft structure of two warbler species with different moult schedules: a study using high-resolution X-ray imaging}},
url = {{http://dx.doi.org/10.1111/j.1469-7998.2009.00644.x}},
doi = {{10.1111/j.1469-7998.2009.00644.x}},
volume = {{280}},
year = {{2010}},
}