Population dynamics of the krill Meganyctiphanes norvegica (M Sars, 1857) (Crustacea: Euphausiacea) in the Ligurian Sea (NW Mediterranean sea). Size structure, growth and mortality modelling
International audience The seasonal abundance, population structure and dynamics of the euphausiid Meganyctiphanes norvegica were studied from samples taken year round in the NW Mediterranean Sea Length-frequency distributions were generally bimodal: the first mode was interpreted as the born-in-the...
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ftsorbonneuniv:oai:HAL:hal-03479841v1 2024-09-15T18:18:24+00:00 Population dynamics of the krill Meganyctiphanes norvegica (M Sars, 1857) (Crustacea: Euphausiacea) in the Ligurian Sea (NW Mediterranean sea). Size structure, growth and mortality modelling Labat, Jp Cuzinroudy, J Station Zoologique de Villefranche Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS) 1996 https://hal.science/hal-03479841 https://doi.org/10.1093/plankt/18.12.2295 en eng HAL CCSD Oxford University Press (OUP) info:eu-repo/semantics/altIdentifier/doi/10.1093/plankt/18.12.2295 hal-03479841 https://hal.science/hal-03479841 doi:10.1093/plankt/18.12.2295 ISSN: 0142-7873 EISSN: 1464-3774 Journal of Plankton Research https://hal.science/hal-03479841 Journal of Plankton Research, 1996, 18 (12), pp.2295-2312. ⟨10.1093/plankt/18.12.2295⟩ [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography info:eu-repo/semantics/article Journal articles 1996 ftsorbonneuniv https://doi.org/10.1093/plankt/18.12.2295 2024-07-25T23:47:52Z International audience The seasonal abundance, population structure and dynamics of the euphausiid Meganyctiphanes norvegica were studied from samples taken year round in the NW Mediterranean Sea Length-frequency distributions were generally bimodal: the first mode was interpreted as the born-in-the-year cohort (0+) and the second as a combination of the older age classes (1+). To describe growth, a bilinear function provides the best fit. A growth rate of 0.052 mm day(-1) (1.56 mm month(-1)) was calculated for the first part of the growth function and 0.0034 mm day(-1) for the second part. A negative exponential mortality function was fitted, giving a mortality rate of 0.0034 day(-1) (1.25 year(-1)). A numerical simulation of the size structure of the Ligurian population was performed and the validity of the model was checked using a multifactorial analysis. The demographic characteristics of the Ligurian population were compared to those of other areas and were interpreted as a functional adaptation of M.norvegica to the southern part of the geographical distribution of the species. Article in Journal/Newspaper Meganyctiphanes norvegica HAL Sorbonne Université Journal of Plankton Research 18 12 2295 2312 |
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Open Polar |
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HAL Sorbonne Université |
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ftsorbonneuniv |
language |
English |
topic |
[SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography |
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[SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography Labat, Jp Cuzinroudy, J Population dynamics of the krill Meganyctiphanes norvegica (M Sars, 1857) (Crustacea: Euphausiacea) in the Ligurian Sea (NW Mediterranean sea). Size structure, growth and mortality modelling |
topic_facet |
[SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography |
description |
International audience The seasonal abundance, population structure and dynamics of the euphausiid Meganyctiphanes norvegica were studied from samples taken year round in the NW Mediterranean Sea Length-frequency distributions were generally bimodal: the first mode was interpreted as the born-in-the-year cohort (0+) and the second as a combination of the older age classes (1+). To describe growth, a bilinear function provides the best fit. A growth rate of 0.052 mm day(-1) (1.56 mm month(-1)) was calculated for the first part of the growth function and 0.0034 mm day(-1) for the second part. A negative exponential mortality function was fitted, giving a mortality rate of 0.0034 day(-1) (1.25 year(-1)). A numerical simulation of the size structure of the Ligurian population was performed and the validity of the model was checked using a multifactorial analysis. The demographic characteristics of the Ligurian population were compared to those of other areas and were interpreted as a functional adaptation of M.norvegica to the southern part of the geographical distribution of the species. |
author2 |
Station Zoologique de Villefranche Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS) |
format |
Article in Journal/Newspaper |
author |
Labat, Jp Cuzinroudy, J |
author_facet |
Labat, Jp Cuzinroudy, J |
author_sort |
Labat, Jp |
title |
Population dynamics of the krill Meganyctiphanes norvegica (M Sars, 1857) (Crustacea: Euphausiacea) in the Ligurian Sea (NW Mediterranean sea). Size structure, growth and mortality modelling |
title_short |
Population dynamics of the krill Meganyctiphanes norvegica (M Sars, 1857) (Crustacea: Euphausiacea) in the Ligurian Sea (NW Mediterranean sea). Size structure, growth and mortality modelling |
title_full |
Population dynamics of the krill Meganyctiphanes norvegica (M Sars, 1857) (Crustacea: Euphausiacea) in the Ligurian Sea (NW Mediterranean sea). Size structure, growth and mortality modelling |
title_fullStr |
Population dynamics of the krill Meganyctiphanes norvegica (M Sars, 1857) (Crustacea: Euphausiacea) in the Ligurian Sea (NW Mediterranean sea). Size structure, growth and mortality modelling |
title_full_unstemmed |
Population dynamics of the krill Meganyctiphanes norvegica (M Sars, 1857) (Crustacea: Euphausiacea) in the Ligurian Sea (NW Mediterranean sea). Size structure, growth and mortality modelling |
title_sort |
population dynamics of the krill meganyctiphanes norvegica (m sars, 1857) (crustacea: euphausiacea) in the ligurian sea (nw mediterranean sea). size structure, growth and mortality modelling |
publisher |
HAL CCSD |
publishDate |
1996 |
url |
https://hal.science/hal-03479841 https://doi.org/10.1093/plankt/18.12.2295 |
genre |
Meganyctiphanes norvegica |
genre_facet |
Meganyctiphanes norvegica |
op_source |
ISSN: 0142-7873 EISSN: 1464-3774 Journal of Plankton Research https://hal.science/hal-03479841 Journal of Plankton Research, 1996, 18 (12), pp.2295-2312. ⟨10.1093/plankt/18.12.2295⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1093/plankt/18.12.2295 hal-03479841 https://hal.science/hal-03479841 doi:10.1093/plankt/18.12.2295 |
op_doi |
https://doi.org/10.1093/plankt/18.12.2295 |
container_title |
Journal of Plankton Research |
container_volume |
18 |
container_issue |
12 |
container_start_page |
2295 |
op_container_end_page |
2312 |
_version_ |
1810456520261894144 |