Vertical migration behaviour in the northern krill Meganyctiphanes norvegica is influenced by moult and reproductive processes
International audience A population of the northern krill Meganyctiphanes norvegica was sampled between 24 July and 3 August 1998 in the Alkor Deep, Kattegat, in order to investigate the influence of sexual and developmental factors on the vertical distribution of adult krill. Depth-discrete samples...
Published in: | Marine Ecology Progress Series |
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Main Authors: | , , |
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Format: | Article in Journal/Newspaper |
Language: | English |
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HAL CCSD
1999
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Online Access: | https://hal.archives-ouvertes.fr/hal-03504556 https://hal.archives-ouvertes.fr/hal-03504556/document https://hal.archives-ouvertes.fr/hal-03504556/file/m190p253.pdf https://doi.org/10.3354/meps190253 |
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ftccsdartic:oai:HAL:hal-03504556v1 2023-05-15T17:10:41+02:00 Vertical migration behaviour in the northern krill Meganyctiphanes norvegica is influenced by moult and reproductive processes Tarling, GA Cuzin-Roudy, J Buchholz, F Laboratoire d'océanographie de Villefranche (LOV) Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Institut de la Mer de Villefranche (IMEV) Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS) 1999 https://hal.archives-ouvertes.fr/hal-03504556 https://hal.archives-ouvertes.fr/hal-03504556/document https://hal.archives-ouvertes.fr/hal-03504556/file/m190p253.pdf https://doi.org/10.3354/meps190253 en eng HAL CCSD info:eu-repo/semantics/altIdentifier/doi/10.3354/meps190253 hal-03504556 https://hal.archives-ouvertes.fr/hal-03504556 https://hal.archives-ouvertes.fr/hal-03504556/document https://hal.archives-ouvertes.fr/hal-03504556/file/m190p253.pdf doi:10.3354/meps190253 http://creativecommons.org/licenses/by/ info:eu-repo/semantics/OpenAccess MARINE ECOLOGY PROGRESS SERIES https://hal.archives-ouvertes.fr/hal-03504556 MARINE ECOLOGY PROGRESS SERIES, 1999, 190, pp.253-262. ⟨10.3354/meps190253⟩ [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography info:eu-repo/semantics/article Journal articles 1999 ftccsdartic https://doi.org/10.3354/meps190253 2022-01-01T23:22:30Z International audience A population of the northern krill Meganyctiphanes norvegica was sampled between 24 July and 3 August 1998 in the Alkor Deep, Kattegat, in order to investigate the influence of sexual and developmental factors on the vertical distribution of adult krill. Depth-discrete samples of krill were taken with a 1 m(2) MOCNESS net at the cardinal times of day (midnight, midday, sunrise and sunset). Specimens were immediately measured and categorised for moulting and spawning status. Further samples were preserved for detailed analysis in the home laboratory. Results showed that the population concentrated in the deep (80 to 100 m) during day-time but segregated vertically during nighttime. Moulting occurred in the deep during night-time, away from the main part of the non-moulting population, which was located between 80 and 50 m. Spawning females were most evident in the up permost depth interval (30 to 5 m). Moulting at night in the deepest layers may be viewed as a mechanism to avoid cannibalism whilst in a vulnerable condition. Spawning in the warm upper layers accelerates reproductive processes and may also reduce the depth to which the eggs sink before hatching into nauplii. Article in Journal/Newspaper Meganyctiphanes norvegica Northern krill Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) Kattegat ENVELOPE(9.692,9.692,63.563,63.563) Marine Ecology Progress Series 190 253 262 |
institution |
Open Polar |
collection |
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) |
op_collection_id |
ftccsdartic |
language |
English |
topic |
[SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography |
spellingShingle |
[SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography Tarling, GA Cuzin-Roudy, J Buchholz, F Vertical migration behaviour in the northern krill Meganyctiphanes norvegica is influenced by moult and reproductive processes |
topic_facet |
[SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography |
description |
International audience A population of the northern krill Meganyctiphanes norvegica was sampled between 24 July and 3 August 1998 in the Alkor Deep, Kattegat, in order to investigate the influence of sexual and developmental factors on the vertical distribution of adult krill. Depth-discrete samples of krill were taken with a 1 m(2) MOCNESS net at the cardinal times of day (midnight, midday, sunrise and sunset). Specimens were immediately measured and categorised for moulting and spawning status. Further samples were preserved for detailed analysis in the home laboratory. Results showed that the population concentrated in the deep (80 to 100 m) during day-time but segregated vertically during nighttime. Moulting occurred in the deep during night-time, away from the main part of the non-moulting population, which was located between 80 and 50 m. Spawning females were most evident in the up permost depth interval (30 to 5 m). Moulting at night in the deepest layers may be viewed as a mechanism to avoid cannibalism whilst in a vulnerable condition. Spawning in the warm upper layers accelerates reproductive processes and may also reduce the depth to which the eggs sink before hatching into nauplii. |
author2 |
Laboratoire d'océanographie de Villefranche (LOV) Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Institut de la Mer de Villefranche (IMEV) Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS) |
format |
Article in Journal/Newspaper |
author |
Tarling, GA Cuzin-Roudy, J Buchholz, F |
author_facet |
Tarling, GA Cuzin-Roudy, J Buchholz, F |
author_sort |
Tarling, GA |
title |
Vertical migration behaviour in the northern krill Meganyctiphanes norvegica is influenced by moult and reproductive processes |
title_short |
Vertical migration behaviour in the northern krill Meganyctiphanes norvegica is influenced by moult and reproductive processes |
title_full |
Vertical migration behaviour in the northern krill Meganyctiphanes norvegica is influenced by moult and reproductive processes |
title_fullStr |
Vertical migration behaviour in the northern krill Meganyctiphanes norvegica is influenced by moult and reproductive processes |
title_full_unstemmed |
Vertical migration behaviour in the northern krill Meganyctiphanes norvegica is influenced by moult and reproductive processes |
title_sort |
vertical migration behaviour in the northern krill meganyctiphanes norvegica is influenced by moult and reproductive processes |
publisher |
HAL CCSD |
publishDate |
1999 |
url |
https://hal.archives-ouvertes.fr/hal-03504556 https://hal.archives-ouvertes.fr/hal-03504556/document https://hal.archives-ouvertes.fr/hal-03504556/file/m190p253.pdf https://doi.org/10.3354/meps190253 |
long_lat |
ENVELOPE(9.692,9.692,63.563,63.563) |
geographic |
Kattegat |
geographic_facet |
Kattegat |
genre |
Meganyctiphanes norvegica Northern krill |
genre_facet |
Meganyctiphanes norvegica Northern krill |
op_source |
MARINE ECOLOGY PROGRESS SERIES https://hal.archives-ouvertes.fr/hal-03504556 MARINE ECOLOGY PROGRESS SERIES, 1999, 190, pp.253-262. ⟨10.3354/meps190253⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.3354/meps190253 hal-03504556 https://hal.archives-ouvertes.fr/hal-03504556 https://hal.archives-ouvertes.fr/hal-03504556/document https://hal.archives-ouvertes.fr/hal-03504556/file/m190p253.pdf doi:10.3354/meps190253 |
op_rights |
http://creativecommons.org/licenses/by/ info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.3354/meps190253 |
container_title |
Marine Ecology Progress Series |
container_volume |
190 |
container_start_page |
253 |
op_container_end_page |
262 |
_version_ |
1766067326957912064 |