Implementing a novel movement-based approach to inferring parturition and neonate caribou calf survival.
In ungulates, parturition is correlated with a reduction in movement rate. With advances in movement-based technologies comes an opportunity to develop new techniques to assess reproduction in wild ungulates that are less invasive and reduce biases. DeMars et al. (2013, Ecology and Evolution 3:4149-...
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ftdoajarticles:oai:doaj.org/article:01ce3f1d48a84061bbe00ab65b930eca 2023-05-15T18:04:25+02:00 Implementing a novel movement-based approach to inferring parturition and neonate caribou calf survival. Maegwin Bonar E Hance Ellington Keith P Lewis Eric Vander Wal 2018-01-01T00:00:00Z https://doi.org/10.1371/journal.pone.0192204 https://doaj.org/article/01ce3f1d48a84061bbe00ab65b930eca EN eng Public Library of Science (PLoS) http://europepmc.org/articles/PMC5821316?pdf=render https://doaj.org/toc/1932-6203 1932-6203 doi:10.1371/journal.pone.0192204 https://doaj.org/article/01ce3f1d48a84061bbe00ab65b930eca PLoS ONE, Vol 13, Iss 2, p e0192204 (2018) Medicine R Science Q article 2018 ftdoajarticles https://doi.org/10.1371/journal.pone.0192204 2022-12-31T00:10:00Z In ungulates, parturition is correlated with a reduction in movement rate. With advances in movement-based technologies comes an opportunity to develop new techniques to assess reproduction in wild ungulates that are less invasive and reduce biases. DeMars et al. (2013, Ecology and Evolution 3:4149-4160) proposed two promising new methods (individual- and population-based; the DeMars model) that use GPS inter-fix step length of adult female caribou (Rangifer tarandus caribou) to infer parturition and neonate survival. Our objective was to apply the DeMars model to caribou populations that may violate model assumptions for retrospective analysis of parturition and calf survival. We extended the use of the DeMars model after assigning parturition and calf mortality status by examining herd-wide distributions of parturition date, calf mortality date, and survival. We used the DeMars model to estimate parturition and calf mortality events and compared them with the known parturition and calf mortality events from collared adult females (n = 19). We also used the DeMars model to estimate parturition and calf mortality events for collared female caribou with unknown parturition and calf mortality events (n = 43) and instead derived herd-wide estimates of calf survival as well as distributions of parturition and calf mortality dates and compared them to herd-wide estimates generated from calves fitted with VHF collars (n = 134). For our data, the individual-based method was effective at predicting calf mortality, but was not effective at predicting parturition. The population-based method was more effective at predicting parturition but was not effective at predicting calf mortality. At the herd-level, the predicted distributions of parturition date from both methods differed from each other and from the distribution derived from the parturition dates of VHF-collared calves (log-ranked test: χ2 = 40.5, df = 2, p < 0.01). The predicted distributions of calf mortality dates from both methods were similar to the ... Article in Journal/Newspaper Rangifer tarandus Directory of Open Access Journals: DOAJ Articles PLOS ONE 13 2 e0192204 |
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Medicine R Science Q Maegwin Bonar E Hance Ellington Keith P Lewis Eric Vander Wal Implementing a novel movement-based approach to inferring parturition and neonate caribou calf survival. |
topic_facet |
Medicine R Science Q |
description |
In ungulates, parturition is correlated with a reduction in movement rate. With advances in movement-based technologies comes an opportunity to develop new techniques to assess reproduction in wild ungulates that are less invasive and reduce biases. DeMars et al. (2013, Ecology and Evolution 3:4149-4160) proposed two promising new methods (individual- and population-based; the DeMars model) that use GPS inter-fix step length of adult female caribou (Rangifer tarandus caribou) to infer parturition and neonate survival. Our objective was to apply the DeMars model to caribou populations that may violate model assumptions for retrospective analysis of parturition and calf survival. We extended the use of the DeMars model after assigning parturition and calf mortality status by examining herd-wide distributions of parturition date, calf mortality date, and survival. We used the DeMars model to estimate parturition and calf mortality events and compared them with the known parturition and calf mortality events from collared adult females (n = 19). We also used the DeMars model to estimate parturition and calf mortality events for collared female caribou with unknown parturition and calf mortality events (n = 43) and instead derived herd-wide estimates of calf survival as well as distributions of parturition and calf mortality dates and compared them to herd-wide estimates generated from calves fitted with VHF collars (n = 134). For our data, the individual-based method was effective at predicting calf mortality, but was not effective at predicting parturition. The population-based method was more effective at predicting parturition but was not effective at predicting calf mortality. At the herd-level, the predicted distributions of parturition date from both methods differed from each other and from the distribution derived from the parturition dates of VHF-collared calves (log-ranked test: χ2 = 40.5, df = 2, p < 0.01). The predicted distributions of calf mortality dates from both methods were similar to the ... |
format |
Article in Journal/Newspaper |
author |
Maegwin Bonar E Hance Ellington Keith P Lewis Eric Vander Wal |
author_facet |
Maegwin Bonar E Hance Ellington Keith P Lewis Eric Vander Wal |
author_sort |
Maegwin Bonar |
title |
Implementing a novel movement-based approach to inferring parturition and neonate caribou calf survival. |
title_short |
Implementing a novel movement-based approach to inferring parturition and neonate caribou calf survival. |
title_full |
Implementing a novel movement-based approach to inferring parturition and neonate caribou calf survival. |
title_fullStr |
Implementing a novel movement-based approach to inferring parturition and neonate caribou calf survival. |
title_full_unstemmed |
Implementing a novel movement-based approach to inferring parturition and neonate caribou calf survival. |
title_sort |
implementing a novel movement-based approach to inferring parturition and neonate caribou calf survival. |
publisher |
Public Library of Science (PLoS) |
publishDate |
2018 |
url |
https://doi.org/10.1371/journal.pone.0192204 https://doaj.org/article/01ce3f1d48a84061bbe00ab65b930eca |
genre |
Rangifer tarandus |
genre_facet |
Rangifer tarandus |
op_source |
PLoS ONE, Vol 13, Iss 2, p e0192204 (2018) |
op_relation |
http://europepmc.org/articles/PMC5821316?pdf=render https://doaj.org/toc/1932-6203 1932-6203 doi:10.1371/journal.pone.0192204 https://doaj.org/article/01ce3f1d48a84061bbe00ab65b930eca |
op_doi |
https://doi.org/10.1371/journal.pone.0192204 |
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PLOS ONE |
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13 |
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e0192204 |
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