A Quantitative Histologic Analysis of Oogenesis in the Flatfish Species <i>Pleuronectes platessa</i> as a Tool for Fisheries Management
Carine Sauger,
Jérôme Quinquis,
Clothilde Berthelin,
Mélanie Lepoittevin,
Nicolas Elie,
Laurent Dubroca,
Kristell Kellner
Affiliations
Carine Sauger
Unity Biology of Organisms and Aquatic Ecosystems (UMR 8067 BOREA), University of Caen-Normandie, Muséum National d’Histoire Naturelle, Sorbonne University, CNRS, IRD, Université des Antilles, Esplanade de la Paix, 14032 Caen, France
Jérôme Quinquis
Laboratoire Ressources Halieutiques de Port en Bessin, Institut Français de Recherche pour l’Exploitation de la Mer (IFREMER), Avenue du Général de Gaulle, 14520 Port en Bessin Huppain, France
Clothilde Berthelin
Unity Biology of Organisms and Aquatic Ecosystems (UMR 8067 BOREA), University of Caen-Normandie, Muséum National d’Histoire Naturelle, Sorbonne University, CNRS, IRD, Université des Antilles, Esplanade de la Paix, 14032 Caen, France
Mélanie Lepoittevin
Unity Biology of Organisms and Aquatic Ecosystems (UMR 8067 BOREA), University of Caen-Normandie, Muséum National d’Histoire Naturelle, Sorbonne University, CNRS, IRD, Université des Antilles, Esplanade de la Paix, 14032 Caen, France
Nicolas Elie
Service Unit PLATON, VIRTUAL’HIS, Federative Structure 4207 “Normandie Oncologie”, Normandie University UNICAEN, 14000 Caen, France
Laurent Dubroca
Laboratoire Ressources Halieutiques de Port en Bessin, Institut Français de Recherche pour l’Exploitation de la Mer (IFREMER), Avenue du Général de Gaulle, 14520 Port en Bessin Huppain, France
Kristell Kellner
Unity Biology of Organisms and Aquatic Ecosystems (UMR 8067 BOREA), University of Caen-Normandie, Muséum National d’Histoire Naturelle, Sorbonne University, CNRS, IRD, Université des Antilles, Esplanade de la Paix, 14032 Caen, France
The following paper gives a detailed description of the oogenesis cycle for the European Plaice (Pleuronectes platessa), from oogonia to post-ovulatory follicle, including ovarian follicle and zona pellucida sizes. Noteworthy particularities were the difficulty in identifying cortical alveoli due to their very small size. Quantitative histology (stereology) on histological slides was used to determine a first size at maturity for females from the English Channel, which was found to be smaller compared to the literature (19 cm). Stereology also determined a first spawning event starting in January, with a peak in February and ongoing until March. Moreover, the use of stereology showed misclassifications for individuals categorized into a maturity phase using a macroscopic visual method. Misclassifications were found with individuals that had spawned (D) but were put under the immature (A) phase, and individuals in development (B) classified under D.
