Magnetic resonance imaging versus chemical fat extraction in a small passerine, the willow warbler Phylloscopus trochilus: A fat-score based statistical comparison
Hedenström, Anders LU ; Fagerlund, Timmy ; Rosén, Mikael LU and Wirestam, Ronnie LU
(2009)
In Journal of Avian Biology
40(4).
p.457-460
- Abstract
- Abstract in Undetermined
The amount of fat of a bird is a fundamental metric commonly used by avian biologists in studies of migration, winter energy management and condition. The methods used for estimating fat content range from simply measuring body mass and subtracting the estimated lean mass, visual scoring of subcutaneous fat deposits, to destructive extraction using a Soxhlet apparatus. We used magnetic resonance imaging (MRI) for non-invasive estimation of fat content in willow warblers Phylloscopus trochilus. According to an indirect comparison, made using a standardized fat scoring system as a common measure, the MRI method gave very similar fat amount as Soxhlet extraction and we discuss advantages of using MRI over... (More) - Abstract in Undetermined
The amount of fat of a bird is a fundamental metric commonly used by avian biologists in studies of migration, winter energy management and condition. The methods used for estimating fat content range from simply measuring body mass and subtracting the estimated lean mass, visual scoring of subcutaneous fat deposits, to destructive extraction using a Soxhlet apparatus. We used magnetic resonance imaging (MRI) for non-invasive estimation of fat content in willow warblers Phylloscopus trochilus. According to an indirect comparison, made using a standardized fat scoring system as a common measure, the MRI method gave very similar fat amount as Soxhlet extraction and we discuss advantages of using MRI over alternative methods. It was also shown that the commonly used fat scoring system yielded a nonlinear relationship between fat mass and fat score. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/1439249
- author
- Hedenström, Anders
LU
; Fagerlund, Timmy
; Rosén, Mikael
LU
and Wirestam, Ronnie
LU
- organization
- publishing date
- 2009
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Journal of Avian Biology
- volume
- 40
- issue
- 4
- pages
- 457 - 460
- publisher
- Wiley-Blackwell
- external identifiers
-
- wos:000267882900014
- scopus:67749144227
- ISSN
- 0908-8857
- DOI
- 10.1111/j.1600-048X.2008.04564.x
- language
- English
- LU publication?
- yes
- additional info
- The information about affiliations in this record was updated in December 2015. The record was previously connected to the following departments: Radiation Physics, Lund (013034000), Theoretical ecology (Closed 2011) (011006011), Department of Ecology (Closed 2011) (011006010)
- id
- fb21d8a5-caf2-4a83-b789-45dfa4648790 (old id 1439249)
- date added to LUP
- 2016-04-01 12:14:17
- date last changed
- 2025-04-04 14:00:31
@article{fb21d8a5-caf2-4a83-b789-45dfa4648790,
abstract = {{Abstract in Undetermined<br/>The amount of fat of a bird is a fundamental metric commonly used by avian biologists in studies of migration, winter energy management and condition. The methods used for estimating fat content range from simply measuring body mass and subtracting the estimated lean mass, visual scoring of subcutaneous fat deposits, to destructive extraction using a Soxhlet apparatus. We used magnetic resonance imaging (MRI) for non-invasive estimation of fat content in willow warblers Phylloscopus trochilus. According to an indirect comparison, made using a standardized fat scoring system as a common measure, the MRI method gave very similar fat amount as Soxhlet extraction and we discuss advantages of using MRI over alternative methods. It was also shown that the commonly used fat scoring system yielded a nonlinear relationship between fat mass and fat score.}},
author = {{Hedenström, Anders and Fagerlund, Timmy and Rosén, Mikael and Wirestam, Ronnie}},
issn = {{0908-8857}},
language = {{eng}},
number = {{4}},
pages = {{457--460}},
publisher = {{Wiley-Blackwell}},
series = {{Journal of Avian Biology}},
title = {{Magnetic resonance imaging versus chemical fat extraction in a small passerine, the willow warbler Phylloscopus trochilus: A fat-score based statistical comparison}},
url = {{http://dx.doi.org/10.1111/j.1600-048X.2008.04564.x}},
doi = {{10.1111/j.1600-048X.2008.04564.x}},
volume = {{40}},
year = {{2009}},
}