Monitoring of sexual maturation in silver eels using ultrasonography
International audience Understanding and control of eel maturation has strong interest for scientific and commercial purposes. To progress in this area, possible improvement of sex determination and maturation monitoring using ultrasonography was investigated in silver eels (Anguilla anguilla). Nine...
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ftccsdartic:oai:HAL:hal-02600967v1 2023-05-15T13:27:44+02:00 Monitoring of sexual maturation in silver eels using ultrasonography Suivi par échographie de la maturation sexuelles des anguilles argentées Bureau Du Colombier, Sarah Jacobs, Louis Gesset, Charline Elie, Pierre Lambert, Patrick Ecosystèmes aquatiques et changements globaux (UR EABX) Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA) Québec, Canada 2014-08-17 https://hal.inrae.fr/hal-02600967 en eng HAL CCSD hal-02600967 https://hal.inrae.fr/hal-02600967 IRSTEA: PUB00043453 De la recherche à la gestion des pêches : penser et agir localement et globalement. 144th Annual Meeting of the American Fisheries Society https://hal.inrae.fr/hal-02600967 De la recherche à la gestion des pêches : penser et agir localement et globalement. 144th Annual Meeting of the American Fisheries Society, Aug 2014, Québec, Canada. pp.1, 2014 GSI [SDE]Environmental Sciences info:eu-repo/semantics/conferenceObject Poster communications 2014 ftccsdartic 2021-10-17T00:03:01Z International audience Understanding and control of eel maturation has strong interest for scientific and commercial purposes. To progress in this area, possible improvement of sex determination and maturation monitoring using ultrasonography was investigated in silver eels (Anguilla anguilla). Ninety six fish were scanned for sex determination using portable ultrasound equipment. Part of them was then subjected to artificial induction of maturation for monitoring of gonad growth at the individual level, and estimation of ovary mass and then gonadosomatic index (GSI) in females. Estimations of gonad length and cross-sectional areas at different times of maturation were used for calculation of ovary mass. Ultrasonography resulted in 100 % success in sex determination and good estimation of ovary mass (97% correlation with true values). Two methods were compared for estimation of ovary mass: one based on a linear model and another on estimating ovary volume from a representation of gonad shape. The one using linear model seemed to be the most appropriate. Ultrasonography made possible the detection of early inter-individual differences in maturation in female silver eels, and has great potential for use in eel both for conservation and aquaculture. Conference Object Anguilla anguilla Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) Canada |
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Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) |
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ftccsdartic |
language |
English |
topic |
GSI [SDE]Environmental Sciences |
spellingShingle |
GSI [SDE]Environmental Sciences Bureau Du Colombier, Sarah Jacobs, Louis Gesset, Charline Elie, Pierre Lambert, Patrick Monitoring of sexual maturation in silver eels using ultrasonography |
topic_facet |
GSI [SDE]Environmental Sciences |
description |
International audience Understanding and control of eel maturation has strong interest for scientific and commercial purposes. To progress in this area, possible improvement of sex determination and maturation monitoring using ultrasonography was investigated in silver eels (Anguilla anguilla). Ninety six fish were scanned for sex determination using portable ultrasound equipment. Part of them was then subjected to artificial induction of maturation for monitoring of gonad growth at the individual level, and estimation of ovary mass and then gonadosomatic index (GSI) in females. Estimations of gonad length and cross-sectional areas at different times of maturation were used for calculation of ovary mass. Ultrasonography resulted in 100 % success in sex determination and good estimation of ovary mass (97% correlation with true values). Two methods were compared for estimation of ovary mass: one based on a linear model and another on estimating ovary volume from a representation of gonad shape. The one using linear model seemed to be the most appropriate. Ultrasonography made possible the detection of early inter-individual differences in maturation in female silver eels, and has great potential for use in eel both for conservation and aquaculture. |
author2 |
Ecosystèmes aquatiques et changements globaux (UR EABX) Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA) |
format |
Conference Object |
author |
Bureau Du Colombier, Sarah Jacobs, Louis Gesset, Charline Elie, Pierre Lambert, Patrick |
author_facet |
Bureau Du Colombier, Sarah Jacobs, Louis Gesset, Charline Elie, Pierre Lambert, Patrick |
author_sort |
Bureau Du Colombier, Sarah |
title |
Monitoring of sexual maturation in silver eels using ultrasonography |
title_short |
Monitoring of sexual maturation in silver eels using ultrasonography |
title_full |
Monitoring of sexual maturation in silver eels using ultrasonography |
title_fullStr |
Monitoring of sexual maturation in silver eels using ultrasonography |
title_full_unstemmed |
Monitoring of sexual maturation in silver eels using ultrasonography |
title_sort |
monitoring of sexual maturation in silver eels using ultrasonography |
publisher |
HAL CCSD |
publishDate |
2014 |
url |
https://hal.inrae.fr/hal-02600967 |
op_coverage |
Québec, Canada |
geographic |
Canada |
geographic_facet |
Canada |
genre |
Anguilla anguilla |
genre_facet |
Anguilla anguilla |
op_source |
De la recherche à la gestion des pêches : penser et agir localement et globalement. 144th Annual Meeting of the American Fisheries Society https://hal.inrae.fr/hal-02600967 De la recherche à la gestion des pêches : penser et agir localement et globalement. 144th Annual Meeting of the American Fisheries Society, Aug 2014, Québec, Canada. pp.1, 2014 |
op_relation |
hal-02600967 https://hal.inrae.fr/hal-02600967 IRSTEA: PUB00043453 |
_version_ |
1766400110661468160 |