OVARIAN DEVELOPMENT AND SEXUAL MATURITY STAGING IN ANTARCTIC KRILL, EUPHAUSIA-SUPERBA DANA (EUPHAUSIACEA)
International audience Several lines of evidence suggest that reproductive development in Antarctic krill is not a simple stepwise process. We present a new method for staging sexual development of female krill, and a key which can be used for live animals and Formalin-fixed samples. The key takes i...
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Online Access: | https://hal.science/hal-03476531 https://doi.org/10.2307/1548361 |
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ftsorbonneuniv:oai:HAL:hal-03476531v1 2024-09-15T17:43:40+00:00 OVARIAN DEVELOPMENT AND SEXUAL MATURITY STAGING IN ANTARCTIC KRILL, EUPHAUSIA-SUPERBA DANA (EUPHAUSIACEA) Cuzinroudy, J Amsler, Mo Station Zoologique de Villefranche Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS) 1991 https://hal.science/hal-03476531 https://doi.org/10.2307/1548361 en eng HAL CCSD info:eu-repo/semantics/altIdentifier/doi/10.2307/1548361 hal-03476531 https://hal.science/hal-03476531 doi:10.2307/1548361 JOURNAL OF CRUSTACEAN BIOLOGY https://hal.science/hal-03476531 JOURNAL OF CRUSTACEAN BIOLOGY, 1991, 11 (2), pp.236-249. ⟨10.2307/1548361⟩ [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography info:eu-repo/semantics/article Journal articles 1991 ftsorbonneuniv https://doi.org/10.2307/1548361 2024-07-25T23:47:52Z International audience Several lines of evidence suggest that reproductive development in Antarctic krill is not a simple stepwise process. We present a new method for staging sexual development of female krill, and a key which can be used for live animals and Formalin-fixed samples. The key takes into account female general appearance, thelycum development, ovarian morphology, and developmental steps of changes in the ovarian cells. This staging method is based on the results of a histological study of ovarian development, but the use of the key itself involves only simple observations and rapid execution of a squash from a piece of the ovary. The reproductive cycle of krill is divided into 10 stages: 8 stages for ovarian development leading to egg production, and 2 stages for sexual regression and reorganization after spawning periods. We believe that such a method could be useful for predicting spawning events and their timing for Antarctic krill, and for a better estimation of fecundity and related energy requirements. Similar keys devised for other euphausiids and free-spawning pelagic crustaceans will allow comparisons among different reproductive strategies. Article in Journal/Newspaper Antarc* Antarctic Antarctic Krill Euphausia superba HAL Sorbonne Université Journal of Crustacean Biology 11 2 236 |
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Open Polar |
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HAL Sorbonne Université |
op_collection_id |
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 Cuzinroudy, J Amsler, Mo OVARIAN DEVELOPMENT AND SEXUAL MATURITY STAGING IN ANTARCTIC KRILL, EUPHAUSIA-SUPERBA DANA (EUPHAUSIACEA) |
topic_facet |
[SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography |
description |
International audience Several lines of evidence suggest that reproductive development in Antarctic krill is not a simple stepwise process. We present a new method for staging sexual development of female krill, and a key which can be used for live animals and Formalin-fixed samples. The key takes into account female general appearance, thelycum development, ovarian morphology, and developmental steps of changes in the ovarian cells. This staging method is based on the results of a histological study of ovarian development, but the use of the key itself involves only simple observations and rapid execution of a squash from a piece of the ovary. The reproductive cycle of krill is divided into 10 stages: 8 stages for ovarian development leading to egg production, and 2 stages for sexual regression and reorganization after spawning periods. We believe that such a method could be useful for predicting spawning events and their timing for Antarctic krill, and for a better estimation of fecundity and related energy requirements. Similar keys devised for other euphausiids and free-spawning pelagic crustaceans will allow comparisons among different reproductive strategies. |
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 |
Cuzinroudy, J Amsler, Mo |
author_facet |
Cuzinroudy, J Amsler, Mo |
author_sort |
Cuzinroudy, J |
title |
OVARIAN DEVELOPMENT AND SEXUAL MATURITY STAGING IN ANTARCTIC KRILL, EUPHAUSIA-SUPERBA DANA (EUPHAUSIACEA) |
title_short |
OVARIAN DEVELOPMENT AND SEXUAL MATURITY STAGING IN ANTARCTIC KRILL, EUPHAUSIA-SUPERBA DANA (EUPHAUSIACEA) |
title_full |
OVARIAN DEVELOPMENT AND SEXUAL MATURITY STAGING IN ANTARCTIC KRILL, EUPHAUSIA-SUPERBA DANA (EUPHAUSIACEA) |
title_fullStr |
OVARIAN DEVELOPMENT AND SEXUAL MATURITY STAGING IN ANTARCTIC KRILL, EUPHAUSIA-SUPERBA DANA (EUPHAUSIACEA) |
title_full_unstemmed |
OVARIAN DEVELOPMENT AND SEXUAL MATURITY STAGING IN ANTARCTIC KRILL, EUPHAUSIA-SUPERBA DANA (EUPHAUSIACEA) |
title_sort |
ovarian development and sexual maturity staging in antarctic krill, euphausia-superba dana (euphausiacea) |
publisher |
HAL CCSD |
publishDate |
1991 |
url |
https://hal.science/hal-03476531 https://doi.org/10.2307/1548361 |
genre |
Antarc* Antarctic Antarctic Krill Euphausia superba |
genre_facet |
Antarc* Antarctic Antarctic Krill Euphausia superba |
op_source |
JOURNAL OF CRUSTACEAN BIOLOGY https://hal.science/hal-03476531 JOURNAL OF CRUSTACEAN BIOLOGY, 1991, 11 (2), pp.236-249. ⟨10.2307/1548361⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.2307/1548361 hal-03476531 https://hal.science/hal-03476531 doi:10.2307/1548361 |
op_doi |
https://doi.org/10.2307/1548361 |
container_title |
Journal of Crustacean Biology |
container_volume |
11 |
container_issue |
2 |
container_start_page |
236 |
_version_ |
1810490766724694016 |