Fine scale feeding behavior of Weddell seals measured by mandible accelerometer
Seals are supposed to forage in efficient manner during dives due to strict physiological constraints. Understanding of foraging behavior is essential for a comprehensive understanding of overall diving behavior. Although several techniques of measuring feeding behavior have been developed, direct m...
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ftawi:oai:epic.awi.de:20814 2023-05-15T13:39:47+02:00 Fine scale feeding behavior of Weddell seals measured by mandible accelerometer Naito, Y. Bornemann, Horst Takahashi, A. Plötz, Joachim 2009 application/pdf https://epic.awi.de/id/eprint/20814/ https://epic.awi.de/id/eprint/20814/1/Nat2009a.pdf https://hdl.handle.net/10013/epic.33009 https://hdl.handle.net/10013/epic.33009.d001 unknown https://epic.awi.de/id/eprint/20814/1/Nat2009a.pdf https://hdl.handle.net/10013/epic.33009.d001 Naito, Y. , Bornemann, H. , Takahashi, A. and Plötz, J. (2009) Fine scale feeding behavior of Weddell seals measured by mandible accelerometer , Xth SCAR International Biology Symposium, July 26-31, 2009, Hokkaido University, Sapporo, Hokkaido, Japan. . hdl:10013/epic.33009 EPIC3Xth SCAR International Biology Symposium, July 26-31, 2009, Hokkaido University, Sapporo, Hokkaido, Japan. Conference notRev 2009 ftawi 2021-12-24T15:33:33Z Seals are supposed to forage in efficient manner during dives due to strict physiological constraints. Understanding of foraging behavior is essential for a comprehensive understanding of overall diving behavior. Although several techniques of measuring feeding behavior have been developed, direct measurement of feeding efficiency has not been made. Simultaneous measurement of feeding rate and effort is essential to study feeding efficiency. In order to develop simultaneous measurement of feeding events and effort (swim stroke) we tested a new mandible accelerometer method on free ranging Weddell seals in the Atka Bay, Eckstroem Ice Shelf, Antarctica in November/December 2008. Before to conduct the field test on Weddell seals, we attached the accelerometers (D2GT; 15mm in diameter, 53mm in length, 18g in air, Little Leonardo, Tokyo) on the mandible of captive harp seals. The experiment showed that frequency filtered signal (Igor Filtering Design Laboratory: IFDL WaveMetrics, Lake Oswego, OR U.S.A.) of acceleration from the mandible is quite distinct at moments of prey ingestion allowing us to use mandible accelerometer for the detection of feeding events of seals in the wild. We attached the same accelerometers equipped with two sensors (surge and heave axes) on the mandible of Weddell seals to detect movements associated with feeding and also swim activities. We successfully obtained feeding data together with stroke and depth data. Here we report the results of the diving behavior and foraging success of Weddell seals in Antarctica. Conference Object Antarc* Antarctica Ice Shelf Weddell Seals Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) Atka ENVELOPE(151.789,151.789,60.835,60.835) Weddell |
institution |
Open Polar |
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Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
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ftawi |
language |
unknown |
description |
Seals are supposed to forage in efficient manner during dives due to strict physiological constraints. Understanding of foraging behavior is essential for a comprehensive understanding of overall diving behavior. Although several techniques of measuring feeding behavior have been developed, direct measurement of feeding efficiency has not been made. Simultaneous measurement of feeding rate and effort is essential to study feeding efficiency. In order to develop simultaneous measurement of feeding events and effort (swim stroke) we tested a new mandible accelerometer method on free ranging Weddell seals in the Atka Bay, Eckstroem Ice Shelf, Antarctica in November/December 2008. Before to conduct the field test on Weddell seals, we attached the accelerometers (D2GT; 15mm in diameter, 53mm in length, 18g in air, Little Leonardo, Tokyo) on the mandible of captive harp seals. The experiment showed that frequency filtered signal (Igor Filtering Design Laboratory: IFDL WaveMetrics, Lake Oswego, OR U.S.A.) of acceleration from the mandible is quite distinct at moments of prey ingestion allowing us to use mandible accelerometer for the detection of feeding events of seals in the wild. We attached the same accelerometers equipped with two sensors (surge and heave axes) on the mandible of Weddell seals to detect movements associated with feeding and also swim activities. We successfully obtained feeding data together with stroke and depth data. Here we report the results of the diving behavior and foraging success of Weddell seals in Antarctica. |
format |
Conference Object |
author |
Naito, Y. Bornemann, Horst Takahashi, A. Plötz, Joachim |
spellingShingle |
Naito, Y. Bornemann, Horst Takahashi, A. Plötz, Joachim Fine scale feeding behavior of Weddell seals measured by mandible accelerometer |
author_facet |
Naito, Y. Bornemann, Horst Takahashi, A. Plötz, Joachim |
author_sort |
Naito, Y. |
title |
Fine scale feeding behavior of Weddell seals measured by mandible accelerometer |
title_short |
Fine scale feeding behavior of Weddell seals measured by mandible accelerometer |
title_full |
Fine scale feeding behavior of Weddell seals measured by mandible accelerometer |
title_fullStr |
Fine scale feeding behavior of Weddell seals measured by mandible accelerometer |
title_full_unstemmed |
Fine scale feeding behavior of Weddell seals measured by mandible accelerometer |
title_sort |
fine scale feeding behavior of weddell seals measured by mandible accelerometer |
publishDate |
2009 |
url |
https://epic.awi.de/id/eprint/20814/ https://epic.awi.de/id/eprint/20814/1/Nat2009a.pdf https://hdl.handle.net/10013/epic.33009 https://hdl.handle.net/10013/epic.33009.d001 |
long_lat |
ENVELOPE(151.789,151.789,60.835,60.835) |
geographic |
Atka Weddell |
geographic_facet |
Atka Weddell |
genre |
Antarc* Antarctica Ice Shelf Weddell Seals |
genre_facet |
Antarc* Antarctica Ice Shelf Weddell Seals |
op_source |
EPIC3Xth SCAR International Biology Symposium, July 26-31, 2009, Hokkaido University, Sapporo, Hokkaido, Japan. |
op_relation |
https://epic.awi.de/id/eprint/20814/1/Nat2009a.pdf https://hdl.handle.net/10013/epic.33009.d001 Naito, Y. , Bornemann, H. , Takahashi, A. and Plötz, J. (2009) Fine scale feeding behavior of Weddell seals measured by mandible accelerometer , Xth SCAR International Biology Symposium, July 26-31, 2009, Hokkaido University, Sapporo, Hokkaido, Japan. . hdl:10013/epic.33009 |
_version_ |
1766124891957886976 |