Department of Biology

Aarhus University Seal / Aarhus Universitets segl

Professor Peter Teglberg Madsen

What a jerk: prey engulfment revealed by high-rate, super-cranial accelerometry on a harbour seal (Phoca vitulina)

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What a jerk: prey engulfment revealed by high-rate, super-cranial accelerometry on a harbour seal (Phoca vitulina). / Ydesen, Kristina S; Wisniewska, Danuta Maria; Hansen, Janni D; Beedholm, Kristian; Johnson, Mark; Madsen, Professor Peter Teglberg.

In: Journal of Experimental Biology, Vol. 217, 2014, p. 2239-2243.

Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaperJournal articleResearchpeer-review

Harvard

Ydesen, KS, Wisniewska, DM, Hansen, JD, Beedholm, K, Johnson, M & Madsen, PPT 2014, 'What a jerk: prey engulfment revealed by high-rate, super-cranial accelerometry on a harbour seal (Phoca vitulina)', Journal of Experimental Biology, vol. 217, pp. 2239-2243. https://doi.org/10.1242/jeb.100016

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MLA

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Author

Ydesen, Kristina S ; Wisniewska, Danuta Maria ; Hansen, Janni D ; Beedholm, Kristian ; Johnson, Mark ; Madsen, Professor Peter Teglberg. / What a jerk: prey engulfment revealed by high-rate, super-cranial accelerometry on a harbour seal (Phoca vitulina). In: Journal of Experimental Biology. 2014 ; Vol. 217. pp. 2239-2243.

Bibtex

@article{0e1b665353f84854a32a52d6aac2d476,
title = "What a jerk: prey engulfment revealed by high-rate, super-cranial accelerometry on a harbour seal (Phoca vitulina)",
abstract = "A key component in understanding the ecological role of marine mammal predators is to identify how and where they capture prey in time and space. Satellite and archival tags on pinnipeds generally only provide diving and position information, and foraging is often inferred to take place in particular shaped dives or when the animal remains in an area for an extended interval. However, fast movements of the head and jaws may provide reliable feeding cues that can be detected by small low-power accelerometers mounted on the head. To test this notion, a harbour seal (Phoca vitulina) was trained to wear an OpenTag (sampling at 200 or 333 Hz with ±2 or ±16 g clipping) on its head while catching fish prey in front of four underwater digital high-speed video cameras. We show that both raptorial and suction feeding generate jerk (i.e. differential of acceleration) signatures with maximum peak values exceeding 1000 m s−3. We conclude that reliable prey capture cues can be derived from fast-sampling, head-mounted accelerometer tags, thus holding a promising potential for long-term studies of foraging ecology and field energetics of aquatic predators in their natural environments",
keywords = "Harbour seal, Pinniped, Accelerometry, foraging ability, Feeding, Jerk, Tag",
author = "Ydesen, {Kristina S} and Wisniewska, {Danuta Maria} and Hansen, {Janni D} and Kristian Beedholm and Mark Johnson and Madsen, {Professor Peter Teglberg}",
year = "2014",
doi = "10.1242/jeb.100016",
language = "English",
volume = "217",
pages = "2239--2243",
journal = "BRITISH JOURNAL OF EXPERIMENTAL BIOLOGY",
issn = "0022-0949",
publisher = "The/Company of Biologists Ltd.",

}

RIS

TY - JOUR

T1 - What a jerk: prey engulfment revealed by high-rate, super-cranial accelerometry on a harbour seal (Phoca vitulina)

AU - Ydesen, Kristina S

AU - Wisniewska, Danuta Maria

AU - Hansen, Janni D

AU - Beedholm, Kristian

AU - Johnson, Mark

AU - Madsen, Professor Peter Teglberg

PY - 2014

Y1 - 2014

N2 - A key component in understanding the ecological role of marine mammal predators is to identify how and where they capture prey in time and space. Satellite and archival tags on pinnipeds generally only provide diving and position information, and foraging is often inferred to take place in particular shaped dives or when the animal remains in an area for an extended interval. However, fast movements of the head and jaws may provide reliable feeding cues that can be detected by small low-power accelerometers mounted on the head. To test this notion, a harbour seal (Phoca vitulina) was trained to wear an OpenTag (sampling at 200 or 333 Hz with ±2 or ±16 g clipping) on its head while catching fish prey in front of four underwater digital high-speed video cameras. We show that both raptorial and suction feeding generate jerk (i.e. differential of acceleration) signatures with maximum peak values exceeding 1000 m s−3. We conclude that reliable prey capture cues can be derived from fast-sampling, head-mounted accelerometer tags, thus holding a promising potential for long-term studies of foraging ecology and field energetics of aquatic predators in their natural environments

AB - A key component in understanding the ecological role of marine mammal predators is to identify how and where they capture prey in time and space. Satellite and archival tags on pinnipeds generally only provide diving and position information, and foraging is often inferred to take place in particular shaped dives or when the animal remains in an area for an extended interval. However, fast movements of the head and jaws may provide reliable feeding cues that can be detected by small low-power accelerometers mounted on the head. To test this notion, a harbour seal (Phoca vitulina) was trained to wear an OpenTag (sampling at 200 or 333 Hz with ±2 or ±16 g clipping) on its head while catching fish prey in front of four underwater digital high-speed video cameras. We show that both raptorial and suction feeding generate jerk (i.e. differential of acceleration) signatures with maximum peak values exceeding 1000 m s−3. We conclude that reliable prey capture cues can be derived from fast-sampling, head-mounted accelerometer tags, thus holding a promising potential for long-term studies of foraging ecology and field energetics of aquatic predators in their natural environments

KW - Harbour seal

KW - Pinniped

KW - Accelerometry

KW - foraging ability

KW - Feeding

KW - Jerk

KW - Tag

U2 - 10.1242/jeb.100016

DO - 10.1242/jeb.100016

M3 - Journal article

C2 - 24737765

VL - 217

SP - 2239

EP - 2243

JO - BRITISH JOURNAL OF EXPERIMENTAL BIOLOGY

JF - BRITISH JOURNAL OF EXPERIMENTAL BIOLOGY

SN - 0022-0949

ER -