Calibrating the time span of longitudinal biomarkers in vertebrate tissues when fine-scale growth records are unavailable
Biological markers (biomarkers) are invaluable and widely adopted in ecology, archaeology, and anthropology. Serially sampling biomarkers along continuously growing inert tissue, such as vibrissae, hair, nail, horn, or baleen, is an ideal method by which to capture the changes in an individual'...
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Online Access: | http://hdl.handle.net/1959.4/unsworks_42797 https://doi.org/10.1002/ecs2.1449 |
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ftunswworks:oai:unsworks.library.unsw.edu.au:1959.4/unsworks_42797 2024-05-19T07:31:25+00:00 Calibrating the time span of longitudinal biomarkers in vertebrate tissues when fine-scale growth records are unavailable Rogers, TL Fung, J Slip, D Steindler, L O'Connell, TC 2016-12-01 http://hdl.handle.net/1959.4/unsworks_42797 https://doi.org/10.1002/ecs2.1449 unknown Wiley http://purl.org/au-research/grants/arc/LP0989933 http://hdl.handle.net/1959.4/unsworks_42797 https://doi.org/10.1002/ecs2.1449 metadata only access http://purl.org/coar/access_right/c_14cb CC-BY-NC-ND https://creativecommons.org/licenses/by-nc-nd/4.0/ urn:ISSN:2150-8925 Ecosphere, 7, 12 anzsrc-for: 0501 Ecological Applications anzsrc-for: 0602 Ecology anzsrc-for: 0608 Zoology journal article http://purl.org/coar/resource_type/c_6501 2016 ftunswworks https://doi.org/10.1002/ecs2.1449 2024-05-01T00:11:20Z Biological markers (biomarkers) are invaluable and widely adopted in ecology, archaeology, and anthropology. Serially sampling biomarkers along continuously growing inert tissue, such as vibrissae, hair, nail, horn, or baleen, is an ideal method by which to capture the changes in an individual's diet, environment, climate, health, and stress levels. However, there are complications in calibrating the time periods that samples represent. Here, we assess how the choice of model and the input data used affect the prediction of time span. We use the Antarctic leopard seal, Hydrurga leptonyx, as our model, with stable isotope data from the vibrissae of captive and wild animals. We show that for tissues with nonlinear growth, and where fine-scale data on tissue growth are unavailable, modeling over the life span of the tissue is a simple and easily adopted approach. In this method, growth parameters are derived from surveys of the study population and the shed.replacement cycle to calibrate the time span of the biomarker data. This model performed better than linear and nonlinear models, which use parameters that have been derived from growth measurements documented over short periods relative to the life span of the tissue. These latter approaches performed in a similar fashion to each other as they tended to overestimate the life span of the tissue. Whether growth is linear or nonlinear, not accounting for position-specific differences in growth (rates or coefficients) and asymptotic length (L∞) resulted in different interpretations of biomarker data across the samples collected from the same individual. In species where metabolically inert tissue grows in a progressive fashion, the ability to account for time-specific information refines our ability to interpret the biomarker data. We recommend that this approach be adapted for tissue, such as the vibrissae and hair of mammals and the hair of humans, which exhibit the predictable growth. Article in Journal/Newspaper Antarc* Antarctic Hydrurga leptonyx Leopard Seal UNSW Sydney (The University of New South Wales): UNSWorks Ecosphere 7 12 |
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Open Polar |
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UNSW Sydney (The University of New South Wales): UNSWorks |
op_collection_id |
ftunswworks |
language |
unknown |
topic |
anzsrc-for: 0501 Ecological Applications anzsrc-for: 0602 Ecology anzsrc-for: 0608 Zoology |
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anzsrc-for: 0501 Ecological Applications anzsrc-for: 0602 Ecology anzsrc-for: 0608 Zoology Rogers, TL Fung, J Slip, D Steindler, L O'Connell, TC Calibrating the time span of longitudinal biomarkers in vertebrate tissues when fine-scale growth records are unavailable |
topic_facet |
anzsrc-for: 0501 Ecological Applications anzsrc-for: 0602 Ecology anzsrc-for: 0608 Zoology |
description |
Biological markers (biomarkers) are invaluable and widely adopted in ecology, archaeology, and anthropology. Serially sampling biomarkers along continuously growing inert tissue, such as vibrissae, hair, nail, horn, or baleen, is an ideal method by which to capture the changes in an individual's diet, environment, climate, health, and stress levels. However, there are complications in calibrating the time periods that samples represent. Here, we assess how the choice of model and the input data used affect the prediction of time span. We use the Antarctic leopard seal, Hydrurga leptonyx, as our model, with stable isotope data from the vibrissae of captive and wild animals. We show that for tissues with nonlinear growth, and where fine-scale data on tissue growth are unavailable, modeling over the life span of the tissue is a simple and easily adopted approach. In this method, growth parameters are derived from surveys of the study population and the shed.replacement cycle to calibrate the time span of the biomarker data. This model performed better than linear and nonlinear models, which use parameters that have been derived from growth measurements documented over short periods relative to the life span of the tissue. These latter approaches performed in a similar fashion to each other as they tended to overestimate the life span of the tissue. Whether growth is linear or nonlinear, not accounting for position-specific differences in growth (rates or coefficients) and asymptotic length (L∞) resulted in different interpretations of biomarker data across the samples collected from the same individual. In species where metabolically inert tissue grows in a progressive fashion, the ability to account for time-specific information refines our ability to interpret the biomarker data. We recommend that this approach be adapted for tissue, such as the vibrissae and hair of mammals and the hair of humans, which exhibit the predictable growth. |
format |
Article in Journal/Newspaper |
author |
Rogers, TL Fung, J Slip, D Steindler, L O'Connell, TC |
author_facet |
Rogers, TL Fung, J Slip, D Steindler, L O'Connell, TC |
author_sort |
Rogers, TL |
title |
Calibrating the time span of longitudinal biomarkers in vertebrate tissues when fine-scale growth records are unavailable |
title_short |
Calibrating the time span of longitudinal biomarkers in vertebrate tissues when fine-scale growth records are unavailable |
title_full |
Calibrating the time span of longitudinal biomarkers in vertebrate tissues when fine-scale growth records are unavailable |
title_fullStr |
Calibrating the time span of longitudinal biomarkers in vertebrate tissues when fine-scale growth records are unavailable |
title_full_unstemmed |
Calibrating the time span of longitudinal biomarkers in vertebrate tissues when fine-scale growth records are unavailable |
title_sort |
calibrating the time span of longitudinal biomarkers in vertebrate tissues when fine-scale growth records are unavailable |
publisher |
Wiley |
publishDate |
2016 |
url |
http://hdl.handle.net/1959.4/unsworks_42797 https://doi.org/10.1002/ecs2.1449 |
genre |
Antarc* Antarctic Hydrurga leptonyx Leopard Seal |
genre_facet |
Antarc* Antarctic Hydrurga leptonyx Leopard Seal |
op_source |
urn:ISSN:2150-8925 Ecosphere, 7, 12 |
op_relation |
http://purl.org/au-research/grants/arc/LP0989933 http://hdl.handle.net/1959.4/unsworks_42797 https://doi.org/10.1002/ecs2.1449 |
op_rights |
metadata only access http://purl.org/coar/access_right/c_14cb CC-BY-NC-ND https://creativecommons.org/licenses/by-nc-nd/4.0/ |
op_doi |
https://doi.org/10.1002/ecs2.1449 |
container_title |
Ecosphere |
container_volume |
7 |
container_issue |
12 |
_version_ |
1799469271408967680 |