Data from: Long necks enhance and constrain foraging capacity in aquatic vertebrates
Highly specialized diving birds display substantial dichotomy in neck length with, for example, cormorants and anhingas having extreme necks, while penguins and auks have minimized necks. We attached acceleration loggers to Imperial cormorants Phalacrocorax atriceps and Magellanic penguins Spheniscu...
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ftdryad:oai:v1.datadryad.org:10255/dryad.160408 2023-05-15T17:58:36+02:00 Data from: Long necks enhance and constrain foraging capacity in aquatic vertebrates Wilson, Rory P. Gómez-Laich, Agustina Sala, Juan E. Dell'Omo, Giacomo Holton, Mark D. Quintana, Flavio Patagonian Shelf 2017-10-17T14:25:41Z http://hdl.handle.net/10255/dryad.160408 https://doi.org/10.5061/dryad.23vc1 unknown doi:10.5061/dryad.23vc1/1 doi:10.1098/rspb.2017.2072 doi:10.5061/dryad.23vc1 Wilson RP, Gómez-Laich A, Sala JE, Dell'Omo G, Holton MD, Quintana F (2017) Long necks enhance and constrain foraging capacity in aquatic vertebrates. Proceedings of the Royal Society B 284(1867): 20172072. http://hdl.handle.net/10255/dryad.160408 diving birds neck length accelerometry energy expenditure Article 2017 ftdryad https://doi.org/10.5061/dryad.23vc1 https://doi.org/10.5061/dryad.23vc1/1 https://doi.org/10.1098/rspb.2017.2072 2020-01-01T15:58:38Z Highly specialized diving birds display substantial dichotomy in neck length with, for example, cormorants and anhingas having extreme necks, while penguins and auks have minimized necks. We attached acceleration loggers to Imperial cormorants Phalacrocorax atriceps and Magellanic penguins Spheniscus magellanicus, both foraging in waters over the Patagonian Shelf, to examine the difference in movement between their respective heads and bodies in an attempt to explain this dichotomy. The penguins had head and body attitudes and movements that broadly concurred throughout all phases of their dives. By contrast, although the cormorants followed this pattern during the descent and ascent phases of dives, during the bottom (foraging) phase of the dive, the head angle differed widely from that of the body and its dynamism (measured using vectorial dynamic acceleration) was over four times greater. A simple model indicated that having the head on an extended neck would allow these cormorants to half the energy expenditure that they would expend if their body moved in the way their heads did. This apparently energy-saving solution is likely to lead to greater heat loss though and would seem tenable in slow-swimming species because the loss of streamlining that it engenders would make it detrimental for fast-swimming taxa such as penguins. Article in Journal/Newspaper Phalacrocorax atriceps Dryad Digital Repository (Duke University) |
institution |
Open Polar |
collection |
Dryad Digital Repository (Duke University) |
op_collection_id |
ftdryad |
language |
unknown |
topic |
diving birds neck length accelerometry energy expenditure |
spellingShingle |
diving birds neck length accelerometry energy expenditure Wilson, Rory P. Gómez-Laich, Agustina Sala, Juan E. Dell'Omo, Giacomo Holton, Mark D. Quintana, Flavio Data from: Long necks enhance and constrain foraging capacity in aquatic vertebrates |
topic_facet |
diving birds neck length accelerometry energy expenditure |
description |
Highly specialized diving birds display substantial dichotomy in neck length with, for example, cormorants and anhingas having extreme necks, while penguins and auks have minimized necks. We attached acceleration loggers to Imperial cormorants Phalacrocorax atriceps and Magellanic penguins Spheniscus magellanicus, both foraging in waters over the Patagonian Shelf, to examine the difference in movement between their respective heads and bodies in an attempt to explain this dichotomy. The penguins had head and body attitudes and movements that broadly concurred throughout all phases of their dives. By contrast, although the cormorants followed this pattern during the descent and ascent phases of dives, during the bottom (foraging) phase of the dive, the head angle differed widely from that of the body and its dynamism (measured using vectorial dynamic acceleration) was over four times greater. A simple model indicated that having the head on an extended neck would allow these cormorants to half the energy expenditure that they would expend if their body moved in the way their heads did. This apparently energy-saving solution is likely to lead to greater heat loss though and would seem tenable in slow-swimming species because the loss of streamlining that it engenders would make it detrimental for fast-swimming taxa such as penguins. |
format |
Article in Journal/Newspaper |
author |
Wilson, Rory P. Gómez-Laich, Agustina Sala, Juan E. Dell'Omo, Giacomo Holton, Mark D. Quintana, Flavio |
author_facet |
Wilson, Rory P. Gómez-Laich, Agustina Sala, Juan E. Dell'Omo, Giacomo Holton, Mark D. Quintana, Flavio |
author_sort |
Wilson, Rory P. |
title |
Data from: Long necks enhance and constrain foraging capacity in aquatic vertebrates |
title_short |
Data from: Long necks enhance and constrain foraging capacity in aquatic vertebrates |
title_full |
Data from: Long necks enhance and constrain foraging capacity in aquatic vertebrates |
title_fullStr |
Data from: Long necks enhance and constrain foraging capacity in aquatic vertebrates |
title_full_unstemmed |
Data from: Long necks enhance and constrain foraging capacity in aquatic vertebrates |
title_sort |
data from: long necks enhance and constrain foraging capacity in aquatic vertebrates |
publishDate |
2017 |
url |
http://hdl.handle.net/10255/dryad.160408 https://doi.org/10.5061/dryad.23vc1 |
op_coverage |
Patagonian Shelf |
genre |
Phalacrocorax atriceps |
genre_facet |
Phalacrocorax atriceps |
op_relation |
doi:10.5061/dryad.23vc1/1 doi:10.1098/rspb.2017.2072 doi:10.5061/dryad.23vc1 Wilson RP, Gómez-Laich A, Sala JE, Dell'Omo G, Holton MD, Quintana F (2017) Long necks enhance and constrain foraging capacity in aquatic vertebrates. Proceedings of the Royal Society B 284(1867): 20172072. http://hdl.handle.net/10255/dryad.160408 |
op_doi |
https://doi.org/10.5061/dryad.23vc1 https://doi.org/10.5061/dryad.23vc1/1 https://doi.org/10.1098/rspb.2017.2072 |
_version_ |
1766167280656318464 |