A tooth wear scoring scheme for age estimation of the Eurasian lynx (Lynx lynx) under field conditions
Within the framework of conservation actions for the Eurasian lynx (Lynx lynx), ageing of individuals is required to assess suitability for translocation and to investigate population dynamics and disease epidemiology. We aimed to develop a standardised ageing tool for free-ranging Eurasian lynx, wh...
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ftunivbern:oai:boris.unibe.ch:129639 2023-08-20T04:10:26+02:00 A tooth wear scoring scheme for age estimation of the Eurasian lynx (Lynx lynx) under field conditions Marti, Iris Andrea Ryser, Marie Pierre 2018-06-07 application/pdf https://boris.unibe.ch/129639/1/b129639.pdf https://boris.unibe.ch/129639/ eng eng Springer-Verlag https://boris.unibe.ch/129639/ info:eu-repo/semantics/openAccess Marti, Iris Andrea; Ryser, Marie Pierre (2018). A tooth wear scoring scheme for age estimation of the Eurasian lynx (Lynx lynx) under field conditions. European journal of wildlife research, 64(4) Springer-Verlag 10.1007/s10344-018-1198-6 <http://dx.doi.org/10.1007/s10344-018-1198-6> 570 Life sciences biology 590 Animals (Zoology) 630 Agriculture info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion PeerReviewed 2018 ftunivbern https://doi.org/10.1007/s10344-018-1198-6 2023-07-31T21:51:44Z Within the framework of conservation actions for the Eurasian lynx (Lynx lynx), ageing of individuals is required to assess suitability for translocation and to investigate population dynamics and disease epidemiology. We aimed to develop a standardised ageing tool for free-ranging Eurasian lynx, which would be non-invasive, time- and cost-effective, and applicable under field conditions. We used tooth pictures of 140 free-ranging lynx of known age from Switzerland. Tooth colour, calculus, number of incisor teeth and canine, premolar and molar tooth wear were recorded according to pre-defined criteria. Statistical comparisons among the categories of each criterion revealed significant differences for all criteria. Tooth colour and canine tooth morphology showed obvious and consistent alterations with age. Together with the molar tooth shape, premolar tooth tips, incisor teeth and amount of calculus, they pictured the age-related changes in lynx dentition. Crown fractures, enamel flaking and open pulp cavities were observed with an increasing prevalence over age but were also sporadically seen in juveniles. Based on the obtained results, we developed a classification scheme distinguishing six age classes: < 1 year, 1–2 years, 3–6 years, 7–9 years, 10–13 years, ≥ 14 years. The scheme was subsequently tested with the same lynx. Classification success rates of different readers ranged from 69 to 88% but errors did not exceed one age class. The homogenous tooth replacement pattern observed in lynx < 1 year allowed us to develop a separate ageing chart to age juveniles in months. The proposed scheme is a promising tool to objectively assign lynx to meaningful age categories. Article in Journal/Newspaper Lynx Lynx lynx lynx BORIS (Bern Open Repository and Information System, University of Bern) European Journal of Wildlife Research 64 4 |
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Open Polar |
collection |
BORIS (Bern Open Repository and Information System, University of Bern) |
op_collection_id |
ftunivbern |
language |
English |
topic |
570 Life sciences biology 590 Animals (Zoology) 630 Agriculture |
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570 Life sciences biology 590 Animals (Zoology) 630 Agriculture Marti, Iris Andrea Ryser, Marie Pierre A tooth wear scoring scheme for age estimation of the Eurasian lynx (Lynx lynx) under field conditions |
topic_facet |
570 Life sciences biology 590 Animals (Zoology) 630 Agriculture |
description |
Within the framework of conservation actions for the Eurasian lynx (Lynx lynx), ageing of individuals is required to assess suitability for translocation and to investigate population dynamics and disease epidemiology. We aimed to develop a standardised ageing tool for free-ranging Eurasian lynx, which would be non-invasive, time- and cost-effective, and applicable under field conditions. We used tooth pictures of 140 free-ranging lynx of known age from Switzerland. Tooth colour, calculus, number of incisor teeth and canine, premolar and molar tooth wear were recorded according to pre-defined criteria. Statistical comparisons among the categories of each criterion revealed significant differences for all criteria. Tooth colour and canine tooth morphology showed obvious and consistent alterations with age. Together with the molar tooth shape, premolar tooth tips, incisor teeth and amount of calculus, they pictured the age-related changes in lynx dentition. Crown fractures, enamel flaking and open pulp cavities were observed with an increasing prevalence over age but were also sporadically seen in juveniles. Based on the obtained results, we developed a classification scheme distinguishing six age classes: < 1 year, 1–2 years, 3–6 years, 7–9 years, 10–13 years, ≥ 14 years. The scheme was subsequently tested with the same lynx. Classification success rates of different readers ranged from 69 to 88% but errors did not exceed one age class. The homogenous tooth replacement pattern observed in lynx < 1 year allowed us to develop a separate ageing chart to age juveniles in months. The proposed scheme is a promising tool to objectively assign lynx to meaningful age categories. |
format |
Article in Journal/Newspaper |
author |
Marti, Iris Andrea Ryser, Marie Pierre |
author_facet |
Marti, Iris Andrea Ryser, Marie Pierre |
author_sort |
Marti, Iris Andrea |
title |
A tooth wear scoring scheme for age estimation of the Eurasian lynx (Lynx lynx) under field conditions |
title_short |
A tooth wear scoring scheme for age estimation of the Eurasian lynx (Lynx lynx) under field conditions |
title_full |
A tooth wear scoring scheme for age estimation of the Eurasian lynx (Lynx lynx) under field conditions |
title_fullStr |
A tooth wear scoring scheme for age estimation of the Eurasian lynx (Lynx lynx) under field conditions |
title_full_unstemmed |
A tooth wear scoring scheme for age estimation of the Eurasian lynx (Lynx lynx) under field conditions |
title_sort |
tooth wear scoring scheme for age estimation of the eurasian lynx (lynx lynx) under field conditions |
publisher |
Springer-Verlag |
publishDate |
2018 |
url |
https://boris.unibe.ch/129639/1/b129639.pdf https://boris.unibe.ch/129639/ |
genre |
Lynx Lynx lynx lynx |
genre_facet |
Lynx Lynx lynx lynx |
op_source |
Marti, Iris Andrea; Ryser, Marie Pierre (2018). A tooth wear scoring scheme for age estimation of the Eurasian lynx (Lynx lynx) under field conditions. European journal of wildlife research, 64(4) Springer-Verlag 10.1007/s10344-018-1198-6 <http://dx.doi.org/10.1007/s10344-018-1198-6> |
op_relation |
https://boris.unibe.ch/129639/ |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1007/s10344-018-1198-6 |
container_title |
European Journal of Wildlife Research |
container_volume |
64 |
container_issue |
4 |
_version_ |
1774724623784476672 |