Field methods to assess pectoral muscle mass in moulting geese
In this paper, we report two new simple field methods to assess changes in pectoral muscle mass in live moulting geese. In the first method, transverse chest profiles of Canada geese Branta canadensis and greylag geese Anser anser were recorded using soldering wire. This standard measure of the ches...
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crwiley:10.2981/wlb.2003.029 2023-12-03T10:20:31+01:00 Field methods to assess pectoral muscle mass in moulting geese Nyeland, Jens Fox, Anthony D. Kahlert, Johnny Therkildsen, Ole R. 2003 http://dx.doi.org/10.2981/wlb.2003.029 https://onlinelibrary.wiley.com/doi/full-xml/10.2981/wlb.2003.029 https://onlinelibrary.wiley.com/doi/pdf/10.2981/wlb.2003.029 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Wildlife Biology volume 9, issue 2, page 155-159 ISSN 1903-220X 1903-220X Management, Monitoring, Policy and Law Nature and Landscape Conservation Ecology, Evolution, Behavior and Systematics journal-article 2003 crwiley https://doi.org/10.2981/wlb.2003.029 2023-11-09T13:26:53Z In this paper, we report two new simple field methods to assess changes in pectoral muscle mass in live moulting geese. In the first method, transverse chest profiles of Canada geese Branta canadensis and greylag geese Anser anser were recorded using soldering wire. This standard measure of the chest angle showed a highly significant relationship with actual pectoral muscle mass. Chest angle measures showed a highly significant polynomial correlation with an index of moult stage, i.e. length of the ninth primary (p9). This indicated an initial slight decline in pectoral muscle mass as p9 length increased, followed by an increase in muscle mass in preparation for regaining the ability to fly. In the second method, visual pectoral profile scores from 0 (thin pectoral muscles concave) to 3 (convex bulky) recorded at distances using telescope or binoculars also proved to be useful as a field measure of pectoral muscle mass in moulting geese. Hence, the first method provides a non‐consumptive means of predicting pectoral muscle mass in moulting geese without the need to dissect birds, and the second method enables field prediction of muscle mass in moulting geese without resort to capture of birds. Article in Journal/Newspaper Branta canadensis Wiley Online Library (via Crossref) Canada Wildlife Biology 9 2 155 159 |
institution |
Open Polar |
collection |
Wiley Online Library (via Crossref) |
op_collection_id |
crwiley |
language |
English |
topic |
Management, Monitoring, Policy and Law Nature and Landscape Conservation Ecology, Evolution, Behavior and Systematics |
spellingShingle |
Management, Monitoring, Policy and Law Nature and Landscape Conservation Ecology, Evolution, Behavior and Systematics Nyeland, Jens Fox, Anthony D. Kahlert, Johnny Therkildsen, Ole R. Field methods to assess pectoral muscle mass in moulting geese |
topic_facet |
Management, Monitoring, Policy and Law Nature and Landscape Conservation Ecology, Evolution, Behavior and Systematics |
description |
In this paper, we report two new simple field methods to assess changes in pectoral muscle mass in live moulting geese. In the first method, transverse chest profiles of Canada geese Branta canadensis and greylag geese Anser anser were recorded using soldering wire. This standard measure of the chest angle showed a highly significant relationship with actual pectoral muscle mass. Chest angle measures showed a highly significant polynomial correlation with an index of moult stage, i.e. length of the ninth primary (p9). This indicated an initial slight decline in pectoral muscle mass as p9 length increased, followed by an increase in muscle mass in preparation for regaining the ability to fly. In the second method, visual pectoral profile scores from 0 (thin pectoral muscles concave) to 3 (convex bulky) recorded at distances using telescope or binoculars also proved to be useful as a field measure of pectoral muscle mass in moulting geese. Hence, the first method provides a non‐consumptive means of predicting pectoral muscle mass in moulting geese without the need to dissect birds, and the second method enables field prediction of muscle mass in moulting geese without resort to capture of birds. |
format |
Article in Journal/Newspaper |
author |
Nyeland, Jens Fox, Anthony D. Kahlert, Johnny Therkildsen, Ole R. |
author_facet |
Nyeland, Jens Fox, Anthony D. Kahlert, Johnny Therkildsen, Ole R. |
author_sort |
Nyeland, Jens |
title |
Field methods to assess pectoral muscle mass in moulting geese |
title_short |
Field methods to assess pectoral muscle mass in moulting geese |
title_full |
Field methods to assess pectoral muscle mass in moulting geese |
title_fullStr |
Field methods to assess pectoral muscle mass in moulting geese |
title_full_unstemmed |
Field methods to assess pectoral muscle mass in moulting geese |
title_sort |
field methods to assess pectoral muscle mass in moulting geese |
publisher |
Wiley |
publishDate |
2003 |
url |
http://dx.doi.org/10.2981/wlb.2003.029 https://onlinelibrary.wiley.com/doi/full-xml/10.2981/wlb.2003.029 https://onlinelibrary.wiley.com/doi/pdf/10.2981/wlb.2003.029 |
geographic |
Canada |
geographic_facet |
Canada |
genre |
Branta canadensis |
genre_facet |
Branta canadensis |
op_source |
Wildlife Biology volume 9, issue 2, page 155-159 ISSN 1903-220X 1903-220X |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.2981/wlb.2003.029 |
container_title |
Wildlife Biology |
container_volume |
9 |
container_issue |
2 |
container_start_page |
155 |
op_container_end_page |
159 |
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1784267951835185152 |