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| Sauger, Carine; Quinquis, Jerome; Kellner, Kristell; Heude-berthelin, Clothilde; Lepoittevin, Mélanie; Elie, Nicolas; Dubroca, Laurent. |
| The North Sea plaice, Pleuronectes platessa (Linnaeus, 1758), is a commonly studied commercial flatfish with poorly known ovarian histology. The following dataset is a collection of female plaice gonad images and their corresponding histological slides, collected during a complete season of the plaice’s reproduction cycle. Stereology was used to determine the percentage of different structures found throughout the ovaries. Inter-agent calibrations were accomplished in order to harmonize the stereological readings, and were based on a comprehensive reading protocol and histological lexicon that were specifically written for the plaice’s ovaries. The distribution and homogeneity of the different cell types found throughout the ovaries were also evaluated.... |
| Tipo: Text |
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| Ano: 2020 |
URL: https://archimer.ifremer.fr/doc/00631/74342/73994.pdf |
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| Sauger, Carine; Quinquis, Jerome; Lepoittevin, Mélanie; Heude-berthelin, Clothilde; Kellner, Kristell; Elie, Nicolas; Dubroca, Laurent. |
| The European plaice (Pleuronectes platessa) is a commercial species with stock management advice given through the estimation of fish length at maturity (L50) (Mahé et al., 2007). Estimating the maturity of fish species has been worked on by the International Council for the Exploration of the Sea (ICES) that wants to harmonize the definitions, terminologies and practices used to determine the different maturity phases. Project MATO (MATurité Objective des poissons par l’histologie quantitative) will, among other things, bring knowledge on the ovarian histology of the plaice in order to correlate histological maturity with macroscopic parameters like the size color and texture of the ovaries. With this knowledge, the aim of this study is to set up a... |
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| Ano: 2019 |
URL: https://archimer.ifremer.fr/doc/00609/72093/70818.pdf |
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| Hegron – Mace, Laurence; Legrand, Véronique; Kellner, Kristell; Grangere, Karine; Cochard, Marie-laure; Vigneau, Joel; Daures, Fabienne. |
| La Baie de Granville représente la première région française et européenne de pêche du buccin. Même si cette ressource génère une activité économique importante à l’échelle de la Normandie avec un volume de 8 800 tonnes, 16.82 millions € en 2014 (source SIH), elle reste néanmoins vulnérable. BESTCLIM a pour objectif de 1) Développer la connaissance du cycle de vie du buccin, 2) Evaluer l’activité de la pêcherie et l’état du stock de buccin en Ouest Cotentin avec des méthodes appropriées, 3) Caractériser les aspects socio-économiques de la pêcherie. L’élévation de la température de l’eau impacte la reproduction du buccin en retardant le déclenchement de la gamétogenèse des mâles. Elle a pour effet de réduire de manière importante l’émission de pontes par... |
| Tipo: Text |
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| Ano: 2017 |
URL: http://archimer.ifremer.fr/doc/00422/53394/54435.pdf |
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| Dheilly, Nolwenn; Lelong, Christophe; Huvet, Arnaud; Kellner, Kristell; Dubos, Marie-pierre; Riviere, Guillaume; Boudry, Pierre; Favrel, Pascal. |
| Background: The Pacific oyster Crassostrea gigas (Mollusca, Lophotrochozoa) is an alternative and irregular protandrous hermaphrodite: most individuals mature first as males and then change sex several times. Little is known about genetic and phenotypic basis of sex differentiation in oysters, and little more about the molecular pathways regulating reproduction. We have recently developed and validated a microarray containing 31,918 oligomers (Dheilly et al., 2011) representing the oyster transcriptome. The application of this microarray to the study of mollusk gametogenesis should provide a better understanding of the key factors involved in sex differentiation and the regulation of oyster reproduction. Methodology/Principal Findings: Gene expression was... |
| Tipo: Text |
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| Ano: 2012 |
URL: http://archimer.ifremer.fr/doc/00087/19862/17505.pdf |
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| Sauger, Carine; Quinquis, Jerome; Dubroca, Laurent; Parrad, Sophie; Kellner, Kristell; Heude-berthelin, Clothilde. |
| This protocol was established during project MATO (MATurité Objective des poissons par l’histologie quantitative) for the evaluation of sexual maturity of exploited stock species, as well as to harmonize the sampling process of gonad extraction before the mounting between slide and slip of the gonad sections. This document follows the work of different workshops that aimed to improve the compilation of data on sexual maturity. The WKMATCH (WorKshop for MATurity staging CHairs, 2012) defined a universal evaluation grid for sexual maturity staging of different species. During this workshop, two main recommendations were made, underlining the need to improve and complete the knowledge on sexual maturity, as well as to harmonize the practices used to determine... |
| Tipo: Text |
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| Ano: 2019 |
URL: https://archimer.ifremer.fr/doc/00595/70724/69144.pdf |
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