A comparison of techniques used to estimate body condition of southern elephant seals (Mirounga leonina)
The total body water (TBW) and body condition of 86 female southern elephant seals was estimated from tritiated water (HTO) dilution space analysis. HTO blood samples were analysed using two distillation methods (direct serum counts and evaporative freeze capture) that yielded significantly differen...
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2001
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ftunivtasecite:oai:ecite.utas.edu.au:22722 2023-05-15T16:05:37+02:00 A comparison of techniques used to estimate body condition of southern elephant seals (Mirounga leonina) Tierney, M Hindell, MA Lea, MA Tollit, D 2001 application/pdf http://www.publish.csiro.au/nid/144.htm https://doi.org/10.1071/WR00066 http://ecite.utas.edu.au/22722 en eng CSIRO Publishing http://ecite.utas.edu.au/22722/1/Tierney_WR_ele_cond_2001.pdf http://dx.doi.org/10.1071/WR00066 Tierney, M and Hindell, MA and Lea, MA and Tollit, D, A comparison of techniques used to estimate body condition of southern elephant seals (Mirounga leonina), Wildlife Research, 28, (6) pp. 581-588. ISSN 1035-3712 (2001) [Refereed Article] http://ecite.utas.edu.au/22722 Environmental Sciences Environmental Science and Management Wildlife and Habitat Management Refereed Article PeerReviewed 2001 ftunivtasecite https://doi.org/10.1071/WR00066 2019-12-13T21:04:37Z The total body water (TBW) and body condition of 86 female southern elephant seals was estimated from tritiated water (HTO) dilution space analysis. HTO blood samples were analysed using two distillation methods (direct serum counts and evaporative freeze capture) that yielded significantly different estimates. Evaporative freeze capture is recommended for use because it is faster, cheaper, and provides a more precise TBW estimate of dilution space. Estimates of TBW were then compared with those derived from bioelectrical impedance analysis (BIA) and morphometric models. There were significant, positive relationships between TBW and BIA variables, but the level of accuracy was inadequate for BIA to be more useful than the other methods trialled. Morphometric models accurately estimated TBW (kg). Models developed from surface area (SA) (TBW = [SA * 82.58] 86.94) and from a combination of mass (M), length (L), and girth (G) (TBW = [(M * 0.72) + (L * 5.49) + (G * 134.94) + 164.36)] provided the most accurate TBW estimates. In contrast, condition indices did not give accurate or reliable estimates of relative body condition. Article in Journal/Newspaper Elephant Seals Mirounga leonina Southern Elephant Seals eCite UTAS (University of Tasmania) Bia ENVELOPE(22.891,22.891,70.317,70.317) Wildlife Research 28 6 581 |
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Open Polar |
collection |
eCite UTAS (University of Tasmania) |
op_collection_id |
ftunivtasecite |
language |
English |
topic |
Environmental Sciences Environmental Science and Management Wildlife and Habitat Management |
spellingShingle |
Environmental Sciences Environmental Science and Management Wildlife and Habitat Management Tierney, M Hindell, MA Lea, MA Tollit, D A comparison of techniques used to estimate body condition of southern elephant seals (Mirounga leonina) |
topic_facet |
Environmental Sciences Environmental Science and Management Wildlife and Habitat Management |
description |
The total body water (TBW) and body condition of 86 female southern elephant seals was estimated from tritiated water (HTO) dilution space analysis. HTO blood samples were analysed using two distillation methods (direct serum counts and evaporative freeze capture) that yielded significantly different estimates. Evaporative freeze capture is recommended for use because it is faster, cheaper, and provides a more precise TBW estimate of dilution space. Estimates of TBW were then compared with those derived from bioelectrical impedance analysis (BIA) and morphometric models. There were significant, positive relationships between TBW and BIA variables, but the level of accuracy was inadequate for BIA to be more useful than the other methods trialled. Morphometric models accurately estimated TBW (kg). Models developed from surface area (SA) (TBW = [SA * 82.58] 86.94) and from a combination of mass (M), length (L), and girth (G) (TBW = [(M * 0.72) + (L * 5.49) + (G * 134.94) + 164.36)] provided the most accurate TBW estimates. In contrast, condition indices did not give accurate or reliable estimates of relative body condition. |
format |
Article in Journal/Newspaper |
author |
Tierney, M Hindell, MA Lea, MA Tollit, D |
author_facet |
Tierney, M Hindell, MA Lea, MA Tollit, D |
author_sort |
Tierney, M |
title |
A comparison of techniques used to estimate body condition of southern elephant seals (Mirounga leonina) |
title_short |
A comparison of techniques used to estimate body condition of southern elephant seals (Mirounga leonina) |
title_full |
A comparison of techniques used to estimate body condition of southern elephant seals (Mirounga leonina) |
title_fullStr |
A comparison of techniques used to estimate body condition of southern elephant seals (Mirounga leonina) |
title_full_unstemmed |
A comparison of techniques used to estimate body condition of southern elephant seals (Mirounga leonina) |
title_sort |
comparison of techniques used to estimate body condition of southern elephant seals (mirounga leonina) |
publisher |
CSIRO Publishing |
publishDate |
2001 |
url |
http://www.publish.csiro.au/nid/144.htm https://doi.org/10.1071/WR00066 http://ecite.utas.edu.au/22722 |
long_lat |
ENVELOPE(22.891,22.891,70.317,70.317) |
geographic |
Bia |
geographic_facet |
Bia |
genre |
Elephant Seals Mirounga leonina Southern Elephant Seals |
genre_facet |
Elephant Seals Mirounga leonina Southern Elephant Seals |
op_relation |
http://ecite.utas.edu.au/22722/1/Tierney_WR_ele_cond_2001.pdf http://dx.doi.org/10.1071/WR00066 Tierney, M and Hindell, MA and Lea, MA and Tollit, D, A comparison of techniques used to estimate body condition of southern elephant seals (Mirounga leonina), Wildlife Research, 28, (6) pp. 581-588. ISSN 1035-3712 (2001) [Refereed Article] http://ecite.utas.edu.au/22722 |
op_doi |
https://doi.org/10.1071/WR00066 |
container_title |
Wildlife Research |
container_volume |
28 |
container_issue |
6 |
container_start_page |
581 |
_version_ |
1766401520875601920 |