Dive track profile, intermandibular angel sensor profile and immobilisation data of adult female Weddell seals at Drescher Inlet from expedition DRE2003
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| Format: | Dataset Open Access |
| Langue: | en |
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PANGAEA
2007
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| _version_ | 1867172220596387840 |
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| author | Liebsch, Nikolai S Wilson, Rory P Bornemann, Horst Watanabe, Yuuki Adelung, Dieter Plötz, Joachim |
| author_facet | Liebsch, Nikolai S Wilson, Rory P Bornemann, Horst Watanabe, Yuuki Adelung, Dieter Plötz, Joachim |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | Determination of when and where animals feed and how much they consume is fundamental to understand their ecology and role in ecosystems. However, the lack of reliable data on feeding habits of wild animals, and particularly in marine endotherms, attests to the difficulty in doing this. A promising recent development proposes using a Hall sensor-magnet System - the inter-mandibular angle sensor (IMASEN) attached to animals' jaws to elucidate feeding events. We conducted trials on captive pinnipeds by feeding IMASEN-equipped animals with prey to examine the utility of this system. Most feeding events were clearly distinguishable from other jaw movements; only small prey items might not be resolved adequately. Based on the results of this study we examined feeding events from free-ranging Weddell seals fitted with IMASENs and dead-reckoners during December 2003 at Drescher Inlet (Riiser Larsen Ice Shelf, eastern Weddell Sea coast), and present data on prey capture and ingestion in relation to the three-dimensionalmovement patterns of the seals. A total of 19 Weddell seals were immobilised by using a combination of ketamine, xylazine, and diazepam. Eight seals were drugged once, six two times, and two and three were drugged three and four times each, coming to a total of 38 immobilisation procedures. Narcoses were terminated with yohimbine (doi:10.1594/PANGAEA.438931). |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_603115 |
| institution | PANGAEA |
| language | en |
| publishDate | 2007 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | Dive track profile, intermandibular angel sensor profile and immobilisation data of adult female Weddell seals at Drescher Inlet from expedition DRE2003 Liebsch, Nikolai S Wilson, Rory P Bornemann, Horst Watanabe, Yuuki Adelung, Dieter Plötz, Joachim ANT-XXI/2, PS65; DRE2003; DRE2003_wed_a_f_01; DRE2003_wed_a_f_02; DRE2003_wed_a_f_03; DRE2003_wed_a_f_04; DRE2003_wed_a_f_05; DRE2003_wed_a_f_06; DRE2003_wed_a_f_07; DRE2003_wed_a_f_08; DRE2003_wed_a_f_09; DRE2003_wed_a_f_10; DRE2003_wed_a_f_11; DRE2003_wed_a_f_12; DRE2003_wed_a_f_13; DRE2003_wed_a_f_14; DRE2003_wed_a_f_15; DRE2003_wed_a_f_16; DRE2003_wed_a_f_17; DRE2003_wed_a_f_18; DRE2003_wed_a_f_19; Drescher Camp; Marine endotherm; Marine Mammal Tracking; MET; MMT Determination of when and where animals feed and how much they consume is fundamental to understand their ecology and role in ecosystems. However, the lack of reliable data on feeding habits of wild animals, and particularly in marine endotherms, attests to the difficulty in doing this. A promising recent development proposes using a Hall sensor-magnet System - the inter-mandibular angle sensor (IMASEN) attached to animals' jaws to elucidate feeding events. We conducted trials on captive pinnipeds by feeding IMASEN-equipped animals with prey to examine the utility of this system. Most feeding events were clearly distinguishable from other jaw movements; only small prey items might not be resolved adequately. Based on the results of this study we examined feeding events from free-ranging Weddell seals fitted with IMASENs and dead-reckoners during December 2003 at Drescher Inlet (Riiser Larsen Ice Shelf, eastern Weddell Sea coast), and present data on prey capture and ingestion in relation to the three-dimensionalmovement patterns of the seals. A total of 19 Weddell seals were immobilised by using a combination of ketamine, xylazine, and diazepam. Eight seals were drugged once, six two times, and two and three were drugged three and four times each, coming to a total of 38 immobilisation procedures. Narcoses were terminated with yohimbine (doi:10.1594/PANGAEA.438931). |
| title | Dive track profile, intermandibular angel sensor profile and immobilisation data of adult female Weddell seals at Drescher Inlet from expedition DRE2003 |
| topic | ANT-XXI/2, PS65; DRE2003; DRE2003_wed_a_f_01; DRE2003_wed_a_f_02; DRE2003_wed_a_f_03; DRE2003_wed_a_f_04; DRE2003_wed_a_f_05; DRE2003_wed_a_f_06; DRE2003_wed_a_f_07; DRE2003_wed_a_f_08; DRE2003_wed_a_f_09; DRE2003_wed_a_f_10; DRE2003_wed_a_f_11; DRE2003_wed_a_f_12; DRE2003_wed_a_f_13; DRE2003_wed_a_f_14; DRE2003_wed_a_f_15; DRE2003_wed_a_f_16; DRE2003_wed_a_f_17; DRE2003_wed_a_f_18; DRE2003_wed_a_f_19; Drescher Camp; Marine endotherm; Marine Mammal Tracking; MET; MMT |
| url | https://doi.org/10.1594/PANGAEA.603115 |