Seasonal reproduction, multiple spawning, and fecundity in northern krill, Meganyctiphanes norvegica, and Antarctic krill, Euphausia superba
2nd International Symposium on Krill, UNIV CALIF SANTA CRUZ, SANTA CRUZ, CALIFORNIA, AUG 23-27, 1999 International audience Both northern krill, Meganyctiphanes norvegica, and Antarctic krill, Euphausia superba, release eggs seasonally in multiple spawning events. Fecundity estimates were determined...
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ftsorbonneuniv:oai:HAL:hal-03483090v1 2024-09-15T17:47:02+00:00 Seasonal reproduction, multiple spawning, and fecundity in northern krill, Meganyctiphanes norvegica, and Antarctic krill, Euphausia superba Cuzin-Roudy, J 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) 2000 https://hal.science/hal-03483090 https://doi.org/10.1139/cjfas-57-S3-6 en eng HAL CCSD NRC Research Press info:eu-repo/semantics/altIdentifier/doi/10.1139/cjfas-57-S3-6 hal-03483090 https://hal.science/hal-03483090 doi:10.1139/cjfas-57-S3-6 ISSN: 0706-652X EISSN: 1205-7533 Canadian Journal of Fisheries and Aquatic Sciences https://hal.science/hal-03483090 Canadian Journal of Fisheries and Aquatic Sciences, 2000, 57 (3), pp.6-15. ⟨10.1139/cjfas-57-S3-6⟩ [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography info:eu-repo/semantics/article Journal articles 2000 ftsorbonneuniv https://doi.org/10.1139/cjfas-57-S3-6 2024-07-25T23:47:52Z 2nd International Symposium on Krill, UNIV CALIF SANTA CRUZ, SANTA CRUZ, CALIFORNIA, AUG 23-27, 1999 International audience Both northern krill, Meganyctiphanes norvegica, and Antarctic krill, Euphausia superba, release eggs seasonally in multiple spawning events. Fecundity estimates were determined based on counts of mature oocytes in the ovary of females in preserved field samples. Principal components analysis and allometry were used to analyze the covariation of egg-batch size with female characteristics. In both krill species, egg-batch size scaled isometrically with ovarian weight but showed a positive allometry with body size. Predicted egg-batch size ranged from 200 to 4000 eggs for M. norvegica of 25.5-35 mm body length and from 1500 to 6000 eggs for E. superba of 36-55 mm. Allometric relationships can be used to predict annual fecundity from size structure data of krill populations. In this study, the effect of temperature on the duration of molting and spawning cycles was used to infer a number of reproductive cycles per year. taking into account climate and seasonal variation. Article in Journal/Newspaper Antarc* Antarctic Antarctic Krill Euphausia superba Meganyctiphanes norvegica Northern krill HAL Sorbonne Université Canadian Journal of Fisheries and Aquatic Sciences 57 S3 6 15 |
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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 Cuzin-Roudy, J Seasonal reproduction, multiple spawning, and fecundity in northern krill, Meganyctiphanes norvegica, and Antarctic krill, Euphausia superba |
topic_facet |
[SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography |
description |
2nd International Symposium on Krill, UNIV CALIF SANTA CRUZ, SANTA CRUZ, CALIFORNIA, AUG 23-27, 1999 International audience Both northern krill, Meganyctiphanes norvegica, and Antarctic krill, Euphausia superba, release eggs seasonally in multiple spawning events. Fecundity estimates were determined based on counts of mature oocytes in the ovary of females in preserved field samples. Principal components analysis and allometry were used to analyze the covariation of egg-batch size with female characteristics. In both krill species, egg-batch size scaled isometrically with ovarian weight but showed a positive allometry with body size. Predicted egg-batch size ranged from 200 to 4000 eggs for M. norvegica of 25.5-35 mm body length and from 1500 to 6000 eggs for E. superba of 36-55 mm. Allometric relationships can be used to predict annual fecundity from size structure data of krill populations. In this study, the effect of temperature on the duration of molting and spawning cycles was used to infer a number of reproductive cycles per year. taking into account climate and seasonal variation. |
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 |
Cuzin-Roudy, J |
author_facet |
Cuzin-Roudy, J |
author_sort |
Cuzin-Roudy, J |
title |
Seasonal reproduction, multiple spawning, and fecundity in northern krill, Meganyctiphanes norvegica, and Antarctic krill, Euphausia superba |
title_short |
Seasonal reproduction, multiple spawning, and fecundity in northern krill, Meganyctiphanes norvegica, and Antarctic krill, Euphausia superba |
title_full |
Seasonal reproduction, multiple spawning, and fecundity in northern krill, Meganyctiphanes norvegica, and Antarctic krill, Euphausia superba |
title_fullStr |
Seasonal reproduction, multiple spawning, and fecundity in northern krill, Meganyctiphanes norvegica, and Antarctic krill, Euphausia superba |
title_full_unstemmed |
Seasonal reproduction, multiple spawning, and fecundity in northern krill, Meganyctiphanes norvegica, and Antarctic krill, Euphausia superba |
title_sort |
seasonal reproduction, multiple spawning, and fecundity in northern krill, meganyctiphanes norvegica, and antarctic krill, euphausia superba |
publisher |
HAL CCSD |
publishDate |
2000 |
url |
https://hal.science/hal-03483090 https://doi.org/10.1139/cjfas-57-S3-6 |
genre |
Antarc* Antarctic Antarctic Krill Euphausia superba Meganyctiphanes norvegica Northern krill |
genre_facet |
Antarc* Antarctic Antarctic Krill Euphausia superba Meganyctiphanes norvegica Northern krill |
op_source |
ISSN: 0706-652X EISSN: 1205-7533 Canadian Journal of Fisheries and Aquatic Sciences https://hal.science/hal-03483090 Canadian Journal of Fisheries and Aquatic Sciences, 2000, 57 (3), pp.6-15. ⟨10.1139/cjfas-57-S3-6⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1139/cjfas-57-S3-6 hal-03483090 https://hal.science/hal-03483090 doi:10.1139/cjfas-57-S3-6 |
op_doi |
https://doi.org/10.1139/cjfas-57-S3-6 |
container_title |
Canadian Journal of Fisheries and Aquatic Sciences |
container_volume |
57 |
container_issue |
S3 |
container_start_page |
6 |
op_container_end_page |
15 |
_version_ |
1810495527428554752 |