Performance and retention of lightweight satellite radio tags applied to the ears of polar bears (Ursus maritimus)
Abstract Background Satellite telemetry studies provide information that is critical to the conservation and management of species affected by ecological change. Here we report on the performance and retention of two types (SPOT-227 and SPOT-305A) of ear-mounted Argos-linked satellite transmitters (...
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ftdoajarticles:oai:doaj.org/article:6df482db67a84d15b15fb8e07ae4a698 2023-05-15T15:35:07+02:00 Performance and retention of lightweight satellite radio tags applied to the ears of polar bears (Ursus maritimus) Øystein Wiig Erik W. Born Kristin L. Laidre Rune Dietz Mikkel Villum Jensen George M. Durner Anthony M. Pagano Eric Regehr Michelle St. Martin Stephen Atkinson Markus Dyck 2017-04-01T00:00:00Z https://doi.org/10.1186/s40317-017-0124-0 https://doaj.org/article/6df482db67a84d15b15fb8e07ae4a698 EN eng BMC http://link.springer.com/article/10.1186/s40317-017-0124-0 https://doaj.org/toc/2050-3385 doi:10.1186/s40317-017-0124-0 2050-3385 https://doaj.org/article/6df482db67a84d15b15fb8e07ae4a698 Animal Biotelemetry, Vol 5, Iss 1, Pp 1-11 (2017) Ear satellite transmitters Performance Retention Platform transmitter terminal PTT Polar bear Ecology QH540-549.5 Animal biochemistry QP501-801 article 2017 ftdoajarticles https://doi.org/10.1186/s40317-017-0124-0 2022-12-31T11:39:02Z Abstract Background Satellite telemetry studies provide information that is critical to the conservation and management of species affected by ecological change. Here we report on the performance and retention of two types (SPOT-227 and SPOT-305A) of ear-mounted Argos-linked satellite transmitters (i.e., platform transmitter terminal, or PTT) deployed on free-ranging polar bears in Eastern Greenland, Baffin Bay, Kane Basin, the southern Beaufort Sea, and the Chukchi Sea during 2007–2013. Results Transmissions from 142 out of 145 PTTs deployed on polar bears were received for an average of 69.3 days. The average functional longevity, defined as the number of days they transmitted while still attached to polar bears, for SPOT-227 was 56.8 days and for SPOT-305A was 48.6 days. Thirty-four of the 142 (24%) PTTs showed signs of being detached before they stopped transmitting, indicating that tag loss was an important aspect of tag failure. Furthermore, 10 of 26 (38%) bears that were re-observed following application of a PTT had a split ear pinna, suggesting that some transmitters were detached by force. All six PTTs that were still on bears upon recapture had lost the antenna, which indicates that antenna breakage was a significant contributor to PTT failure. Finally, only nine of the 142 (6%) PTTs—three of which were still attached to bears—had a final voltage reading close to the value indicating battery exhaustion. This suggests that battery exhaustion was not a major factor in tag performance. Conclusions The average functional longevity of approximately 2 months for ear-mounted PTTs (this study) is poor compared to PTT collars fitted to adult female polar bears, which can last for several years. Early failure of the ear-mounted PTTs appeared to be caused primarily by detachment from the ear or antenna breakage. We suggest that much smaller and lighter ear-mounted transmitters are necessary to reduce the risk of tissue irritation, tissue damage, and tag detachment, and with a more robust antenna design. Our ... Article in Journal/Newspaper Baffin Bay Baffin Bay Baffin Beaufort Sea Chukchi Chukchi Sea Greenland Kane Basin polar bear Ursus maritimus Directory of Open Access Journals: DOAJ Articles Chukchi Sea Baffin Bay Greenland Kane ENVELOPE(-63.038,-63.038,-73.952,-73.952) Animal Biotelemetry 5 1 |
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Open Polar |
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Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Ear satellite transmitters Performance Retention Platform transmitter terminal PTT Polar bear Ecology QH540-549.5 Animal biochemistry QP501-801 |
spellingShingle |
Ear satellite transmitters Performance Retention Platform transmitter terminal PTT Polar bear Ecology QH540-549.5 Animal biochemistry QP501-801 Øystein Wiig Erik W. Born Kristin L. Laidre Rune Dietz Mikkel Villum Jensen George M. Durner Anthony M. Pagano Eric Regehr Michelle St. Martin Stephen Atkinson Markus Dyck Performance and retention of lightweight satellite radio tags applied to the ears of polar bears (Ursus maritimus) |
topic_facet |
Ear satellite transmitters Performance Retention Platform transmitter terminal PTT Polar bear Ecology QH540-549.5 Animal biochemistry QP501-801 |
description |
Abstract Background Satellite telemetry studies provide information that is critical to the conservation and management of species affected by ecological change. Here we report on the performance and retention of two types (SPOT-227 and SPOT-305A) of ear-mounted Argos-linked satellite transmitters (i.e., platform transmitter terminal, or PTT) deployed on free-ranging polar bears in Eastern Greenland, Baffin Bay, Kane Basin, the southern Beaufort Sea, and the Chukchi Sea during 2007–2013. Results Transmissions from 142 out of 145 PTTs deployed on polar bears were received for an average of 69.3 days. The average functional longevity, defined as the number of days they transmitted while still attached to polar bears, for SPOT-227 was 56.8 days and for SPOT-305A was 48.6 days. Thirty-four of the 142 (24%) PTTs showed signs of being detached before they stopped transmitting, indicating that tag loss was an important aspect of tag failure. Furthermore, 10 of 26 (38%) bears that were re-observed following application of a PTT had a split ear pinna, suggesting that some transmitters were detached by force. All six PTTs that were still on bears upon recapture had lost the antenna, which indicates that antenna breakage was a significant contributor to PTT failure. Finally, only nine of the 142 (6%) PTTs—three of which were still attached to bears—had a final voltage reading close to the value indicating battery exhaustion. This suggests that battery exhaustion was not a major factor in tag performance. Conclusions The average functional longevity of approximately 2 months for ear-mounted PTTs (this study) is poor compared to PTT collars fitted to adult female polar bears, which can last for several years. Early failure of the ear-mounted PTTs appeared to be caused primarily by detachment from the ear or antenna breakage. We suggest that much smaller and lighter ear-mounted transmitters are necessary to reduce the risk of tissue irritation, tissue damage, and tag detachment, and with a more robust antenna design. Our ... |
format |
Article in Journal/Newspaper |
author |
Øystein Wiig Erik W. Born Kristin L. Laidre Rune Dietz Mikkel Villum Jensen George M. Durner Anthony M. Pagano Eric Regehr Michelle St. Martin Stephen Atkinson Markus Dyck |
author_facet |
Øystein Wiig Erik W. Born Kristin L. Laidre Rune Dietz Mikkel Villum Jensen George M. Durner Anthony M. Pagano Eric Regehr Michelle St. Martin Stephen Atkinson Markus Dyck |
author_sort |
Øystein Wiig |
title |
Performance and retention of lightweight satellite radio tags applied to the ears of polar bears (Ursus maritimus) |
title_short |
Performance and retention of lightweight satellite radio tags applied to the ears of polar bears (Ursus maritimus) |
title_full |
Performance and retention of lightweight satellite radio tags applied to the ears of polar bears (Ursus maritimus) |
title_fullStr |
Performance and retention of lightweight satellite radio tags applied to the ears of polar bears (Ursus maritimus) |
title_full_unstemmed |
Performance and retention of lightweight satellite radio tags applied to the ears of polar bears (Ursus maritimus) |
title_sort |
performance and retention of lightweight satellite radio tags applied to the ears of polar bears (ursus maritimus) |
publisher |
BMC |
publishDate |
2017 |
url |
https://doi.org/10.1186/s40317-017-0124-0 https://doaj.org/article/6df482db67a84d15b15fb8e07ae4a698 |
long_lat |
ENVELOPE(-63.038,-63.038,-73.952,-73.952) |
geographic |
Chukchi Sea Baffin Bay Greenland Kane |
geographic_facet |
Chukchi Sea Baffin Bay Greenland Kane |
genre |
Baffin Bay Baffin Bay Baffin Beaufort Sea Chukchi Chukchi Sea Greenland Kane Basin polar bear Ursus maritimus |
genre_facet |
Baffin Bay Baffin Bay Baffin Beaufort Sea Chukchi Chukchi Sea Greenland Kane Basin polar bear Ursus maritimus |
op_source |
Animal Biotelemetry, Vol 5, Iss 1, Pp 1-11 (2017) |
op_relation |
http://link.springer.com/article/10.1186/s40317-017-0124-0 https://doaj.org/toc/2050-3385 doi:10.1186/s40317-017-0124-0 2050-3385 https://doaj.org/article/6df482db67a84d15b15fb8e07ae4a698 |
op_doi |
https://doi.org/10.1186/s40317-017-0124-0 |
container_title |
Animal Biotelemetry |
container_volume |
5 |
container_issue |
1 |
_version_ |
1766365422691549184 |