Diving classification and behavior of free-ranging female southern elephant seals based on threedimensional movements and video-recorded observations
The goal of this study was to classify dives of free-ranging female southern elephant seals Mirounga leonina from Península Valdés, Argentina, during their 2 mo post-breeding migration. Classifications were based on 3-dimensional movements and video-recorded observationsfrom 13 797 dives obtained by...
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ftconicet:oai:ri.conicet.gov.ar:11336/109673 2023-10-09T21:51:10+02:00 Diving classification and behavior of free-ranging female southern elephant seals based on threedimensional movements and video-recorded observations McGovern, K.A. Rodriguez, Diego Horacio Lewis, Mirtha Noemi Davis, R.W application/pdf http://hdl.handle.net/11336/109673 eng eng Inter-Research info:eu-repo/semantics/altIdentifier/url/https://www.int-res.com/abstracts/meps/v620/p215-232/ info:eu-repo/semantics/altIdentifier/doi/10.3354/meps12936 http://hdl.handle.net/11336/109673 McGovern, K.A.; Rodriguez, Diego Horacio; Lewis, Mirtha Noemi; Davis, R.W; Diving classification and behavior of free-ranging female southern elephant seals based on threedimensional movements and video-recorded observations; Inter-Research; Marine Ecology Progress Series; 620; 18-6-2019; 215-232 0171-8630 CONICET Digital CONICET info:eu-repo/semantics/restrictedAccess https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ MIROUNGA LEONINA DIVING BEHAVIOR FORAGING BEHAVIOR MYCTOPHID PINNIPED SEAL SOUTH ATLANTIC OCEAN https://purl.org/becyt/ford/1.6 https://purl.org/becyt/ford/1 info:eu-repo/semantics/article info:ar-repo/semantics/artículo info:eu-repo/semantics/publishedVersion ftconicet https://doi.org/10.3354/meps12936 2023-09-24T19:49:41Z The goal of this study was to classify dives of free-ranging female southern elephant seals Mirounga leonina from Península Valdés, Argentina, during their 2 mo post-breeding migration. Classifications were based on 3-dimensional movements and video-recorded observationsfrom 13 797 dives obtained by attaching video and data recorders to the backs of 8 seals. We inferred behavioral functions for the dive classes based on video-recorded observations. Three dive types were identified: foraging, resting, and transit. Most (98%) prey captures occurred during foraging dives, and primary prey were pencil smelt and myctophids. Over deep water, foraging dives were deep (maximum depth 553 ± 258 m, mean ± SD), long in duration (21.5 ± 5.8 min), and meandering with bursts of speed, steep descent and ascent angles, and vertical head movements associated with prey capture. Resting dives were shallower (maximum depth 375 ± 114 m) but lasted longer (22.6 ± 6.2 min), with lower stroking rates and speeds and greater variation inpitch and roll angle during descent. Transit dives were shallower (maximum depth 307 ± 171 m),shorter (19.9 ± 6.6 min), and more linear, with higher swim speeds and stroking rates, shallowerascent angles, and farther straight-line distances traveled. Seals exhibited several strategies toreduce the energetic cost of foraging, including gliding during descent, swimming at optimal speeds for energy savings during foraging dive ascents, ascending at the most cost-effectiveangles during transit dives, and resting preferentially during daytime hours when prey are deepestand foraging dives are less efficient. Fil: McGovern, K.A. Texas A&M University; Estados Unidos Fil: Rodriguez, Diego Horacio. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones Marinas y Costeras. Universidad Nacional de Mar del Plata. Facultad de Ciencias Exactas y Naturales. Instituto de Investigaciones Marinas y Costeras; Argentina Fil: ... Article in Journal/Newspaper Elephant Seals Mirounga leonina South Atlantic Ocean Southern Elephant Seals CONICET Digital (Consejo Nacional de Investigaciones Científicas y Técnicas) Argentina Rodriguez ENVELOPE(-56.720,-56.720,-63.529,-63.529) Marine Ecology Progress Series 620 215 232 |
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Open Polar |
collection |
CONICET Digital (Consejo Nacional de Investigaciones Científicas y Técnicas) |
op_collection_id |
ftconicet |
language |
English |
topic |
MIROUNGA LEONINA DIVING BEHAVIOR FORAGING BEHAVIOR MYCTOPHID PINNIPED SEAL SOUTH ATLANTIC OCEAN https://purl.org/becyt/ford/1.6 https://purl.org/becyt/ford/1 |
spellingShingle |
MIROUNGA LEONINA DIVING BEHAVIOR FORAGING BEHAVIOR MYCTOPHID PINNIPED SEAL SOUTH ATLANTIC OCEAN https://purl.org/becyt/ford/1.6 https://purl.org/becyt/ford/1 McGovern, K.A. Rodriguez, Diego Horacio Lewis, Mirtha Noemi Davis, R.W Diving classification and behavior of free-ranging female southern elephant seals based on threedimensional movements and video-recorded observations |
topic_facet |
MIROUNGA LEONINA DIVING BEHAVIOR FORAGING BEHAVIOR MYCTOPHID PINNIPED SEAL SOUTH ATLANTIC OCEAN https://purl.org/becyt/ford/1.6 https://purl.org/becyt/ford/1 |
description |
The goal of this study was to classify dives of free-ranging female southern elephant seals Mirounga leonina from Península Valdés, Argentina, during their 2 mo post-breeding migration. Classifications were based on 3-dimensional movements and video-recorded observationsfrom 13 797 dives obtained by attaching video and data recorders to the backs of 8 seals. We inferred behavioral functions for the dive classes based on video-recorded observations. Three dive types were identified: foraging, resting, and transit. Most (98%) prey captures occurred during foraging dives, and primary prey were pencil smelt and myctophids. Over deep water, foraging dives were deep (maximum depth 553 ± 258 m, mean ± SD), long in duration (21.5 ± 5.8 min), and meandering with bursts of speed, steep descent and ascent angles, and vertical head movements associated with prey capture. Resting dives were shallower (maximum depth 375 ± 114 m) but lasted longer (22.6 ± 6.2 min), with lower stroking rates and speeds and greater variation inpitch and roll angle during descent. Transit dives were shallower (maximum depth 307 ± 171 m),shorter (19.9 ± 6.6 min), and more linear, with higher swim speeds and stroking rates, shallowerascent angles, and farther straight-line distances traveled. Seals exhibited several strategies toreduce the energetic cost of foraging, including gliding during descent, swimming at optimal speeds for energy savings during foraging dive ascents, ascending at the most cost-effectiveangles during transit dives, and resting preferentially during daytime hours when prey are deepestand foraging dives are less efficient. Fil: McGovern, K.A. Texas A&M University; Estados Unidos Fil: Rodriguez, Diego Horacio. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones Marinas y Costeras. Universidad Nacional de Mar del Plata. Facultad de Ciencias Exactas y Naturales. Instituto de Investigaciones Marinas y Costeras; Argentina Fil: ... |
format |
Article in Journal/Newspaper |
author |
McGovern, K.A. Rodriguez, Diego Horacio Lewis, Mirtha Noemi Davis, R.W |
author_facet |
McGovern, K.A. Rodriguez, Diego Horacio Lewis, Mirtha Noemi Davis, R.W |
author_sort |
McGovern, K.A. |
title |
Diving classification and behavior of free-ranging female southern elephant seals based on threedimensional movements and video-recorded observations |
title_short |
Diving classification and behavior of free-ranging female southern elephant seals based on threedimensional movements and video-recorded observations |
title_full |
Diving classification and behavior of free-ranging female southern elephant seals based on threedimensional movements and video-recorded observations |
title_fullStr |
Diving classification and behavior of free-ranging female southern elephant seals based on threedimensional movements and video-recorded observations |
title_full_unstemmed |
Diving classification and behavior of free-ranging female southern elephant seals based on threedimensional movements and video-recorded observations |
title_sort |
diving classification and behavior of free-ranging female southern elephant seals based on threedimensional movements and video-recorded observations |
publisher |
Inter-Research |
url |
http://hdl.handle.net/11336/109673 |
long_lat |
ENVELOPE(-56.720,-56.720,-63.529,-63.529) |
geographic |
Argentina Rodriguez |
geographic_facet |
Argentina Rodriguez |
genre |
Elephant Seals Mirounga leonina South Atlantic Ocean Southern Elephant Seals |
genre_facet |
Elephant Seals Mirounga leonina South Atlantic Ocean Southern Elephant Seals |
op_relation |
info:eu-repo/semantics/altIdentifier/url/https://www.int-res.com/abstracts/meps/v620/p215-232/ info:eu-repo/semantics/altIdentifier/doi/10.3354/meps12936 http://hdl.handle.net/11336/109673 McGovern, K.A.; Rodriguez, Diego Horacio; Lewis, Mirtha Noemi; Davis, R.W; Diving classification and behavior of free-ranging female southern elephant seals based on threedimensional movements and video-recorded observations; Inter-Research; Marine Ecology Progress Series; 620; 18-6-2019; 215-232 0171-8630 CONICET Digital CONICET |
op_rights |
info:eu-repo/semantics/restrictedAccess https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
op_doi |
https://doi.org/10.3354/meps12936 |
container_title |
Marine Ecology Progress Series |
container_volume |
620 |
container_start_page |
215 |
op_container_end_page |
232 |
_version_ |
1779314267396243456 |