Swimming in Formation in Krill (Euphausiacea), a hypothesis: Dynamics of the flow field, properties of antennular sensor systems and a sensory-motor link
The act of swimming in formation by species such as Euphausia superba , Antarctic krill, is assumed to be regulated by a sensitivity to the characteristic and spatially elaborate flow field produced by this species of shrimp. We used a related species, Meganyctiphanes , North-Atlantic krill, to visu...
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fthighwire:oai:open-archive.highwire.org:plankt:fbh122v1 2023-05-15T13:57:29+02:00 Swimming in Formation in Krill (Euphausiacea), a hypothesis: Dynamics of the flow field, properties of antennular sensor systems and a sensory-motor link Patria, Mufti P. Wiese, Konrad 2004-07-28 01:13:02.0 text/html http://plankt.oxfordjournals.org/cgi/content/short/fbh122v1 https://doi.org/10.1093/plankt/fbh122 en eng Oxford University Press http://plankt.oxfordjournals.org/cgi/content/short/fbh122v1 http://dx.doi.org/10.1093/plankt/fbh122 Copyright (C) 2004, Oxford University Press Article TEXT 2004 fthighwire https://doi.org/10.1093/plankt/fbh122 2016-11-16T18:35:32Z The act of swimming in formation by species such as Euphausia superba , Antarctic krill, is assumed to be regulated by a sensitivity to the characteristic and spatially elaborate flow field produced by this species of shrimp. We used a related species, Meganyctiphanes , North-Atlantic krill, to visualize the flow field produced by tethered shrimps in an aquarium. In this situation the propulsion jetflow some centimeters behind the shrimp is surrounded by a vortex-ring of recoiling water motion from which, if the vortex is also produced by unrestrained swimming shrimp, a following shrimp hypothetically can draw forces of lift and propulsion to decrease energy expense in long distance migration. Two antennular sensitivities to water vibration in frequency ranges 5-40 and 40 to 150 Hz were calibrated and the activity of connected interneurons was traced into the abdominal pleopod-carrying segments. Water oscillation of 3-10 Hz frequency, applied to the antennules, was shown to entrain a closely synchronous pleopod beat in the stimulated specimens. Text Antarc* Antarctic Antarctic Krill Euphausia superba North Atlantic HighWire Press (Stanford University) Antarctic Journal of Plankton Research 26 11 1315 1325 |
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HighWire Press (Stanford University) |
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English |
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Article Patria, Mufti P. Wiese, Konrad Swimming in Formation in Krill (Euphausiacea), a hypothesis: Dynamics of the flow field, properties of antennular sensor systems and a sensory-motor link |
topic_facet |
Article |
description |
The act of swimming in formation by species such as Euphausia superba , Antarctic krill, is assumed to be regulated by a sensitivity to the characteristic and spatially elaborate flow field produced by this species of shrimp. We used a related species, Meganyctiphanes , North-Atlantic krill, to visualize the flow field produced by tethered shrimps in an aquarium. In this situation the propulsion jetflow some centimeters behind the shrimp is surrounded by a vortex-ring of recoiling water motion from which, if the vortex is also produced by unrestrained swimming shrimp, a following shrimp hypothetically can draw forces of lift and propulsion to decrease energy expense in long distance migration. Two antennular sensitivities to water vibration in frequency ranges 5-40 and 40 to 150 Hz were calibrated and the activity of connected interneurons was traced into the abdominal pleopod-carrying segments. Water oscillation of 3-10 Hz frequency, applied to the antennules, was shown to entrain a closely synchronous pleopod beat in the stimulated specimens. |
format |
Text |
author |
Patria, Mufti P. Wiese, Konrad |
author_facet |
Patria, Mufti P. Wiese, Konrad |
author_sort |
Patria, Mufti P. |
title |
Swimming in Formation in Krill (Euphausiacea), a hypothesis: Dynamics of the flow field, properties of antennular sensor systems and a sensory-motor link |
title_short |
Swimming in Formation in Krill (Euphausiacea), a hypothesis: Dynamics of the flow field, properties of antennular sensor systems and a sensory-motor link |
title_full |
Swimming in Formation in Krill (Euphausiacea), a hypothesis: Dynamics of the flow field, properties of antennular sensor systems and a sensory-motor link |
title_fullStr |
Swimming in Formation in Krill (Euphausiacea), a hypothesis: Dynamics of the flow field, properties of antennular sensor systems and a sensory-motor link |
title_full_unstemmed |
Swimming in Formation in Krill (Euphausiacea), a hypothesis: Dynamics of the flow field, properties of antennular sensor systems and a sensory-motor link |
title_sort |
swimming in formation in krill (euphausiacea), a hypothesis: dynamics of the flow field, properties of antennular sensor systems and a sensory-motor link |
publisher |
Oxford University Press |
publishDate |
2004 |
url |
http://plankt.oxfordjournals.org/cgi/content/short/fbh122v1 https://doi.org/10.1093/plankt/fbh122 |
geographic |
Antarctic |
geographic_facet |
Antarctic |
genre |
Antarc* Antarctic Antarctic Krill Euphausia superba North Atlantic |
genre_facet |
Antarc* Antarctic Antarctic Krill Euphausia superba North Atlantic |
op_relation |
http://plankt.oxfordjournals.org/cgi/content/short/fbh122v1 http://dx.doi.org/10.1093/plankt/fbh122 |
op_rights |
Copyright (C) 2004, Oxford University Press |
op_doi |
https://doi.org/10.1093/plankt/fbh122 |
container_title |
Journal of Plankton Research |
container_volume |
26 |
container_issue |
11 |
container_start_page |
1315 |
op_container_end_page |
1325 |
_version_ |
1766265147684290560 |