Length–weight relationships of the French pikes Esox spp. (Teleostei, Esocidae)

Lucas Royer; Fabrice Teletchea; Sophie Delavergne; Frédéric Lafitte; Marion Escarpit; Quentin Molina; Emilie Breugnot; Eddy Cosson; Aurélia L'Hostis; Gaël P.J. Denys

doi:10.1051/limn/2024001

All issues

Volume 60 (2024)

Int. J. Lim., 60 (2024) 2

Abstract

Open Access

Issue		Int. J. Lim. Volume 60, 2024


Article Number		2
Number of page(s)		8
DOI		https://doi.org/10.1051/limn/2024001
Published online		08 March 2024

Int. J. Lim. 2024, 60, 2

Short note

Length–weight relationships of the French pikes Esox spp. (Teleostei, Esocidae)

Lucas Royer¹, Fabrice Teletchea¹, Sophie Delavergne², Frédéric Lafitte², Marion Escarpit³, Quentin Molina⁴, Emilie Breugnot⁵, Eddy Cosson⁶, Aurélia L'Hostis⁷ and Gaël P.J. Denys⁸^,9^*

¹ University of Lorraine, UR AFPA, USC INRAE 340, Vandœuvre-lès-Nancy, F-54506, France
² Fédération de la Gironde pour la pêche et la protection du milieu aquatique, 10 ZA du Lapin, 33750 Beychac-et-Caillau, France
³ Fédération des Landes pour la pêche et la protection du milieu aquatique, 102 allées Marines, 40400 Tartas, France
⁴ Fédération du Lot-et-Garonne pour la pêche et la protection du milieu aquatique, 44 cours du 9ème-de-ligne BP 225 47006 Agen cedex, France
⁵ Office Français de la Biodiversité, Direction régionale Nouvelle-Aquitaine, 207 cours du Médoc, 33300 Bordeaux, France
⁶ Office Français de la Biodiversité, Direction Surveillance Evaluation Données, 5 square Félix NADAR, 94300 Vincennes, France
⁷ Union des Fédérations pour la pêche et la protection du milieu aquatique du Bassin Adour-Garonne, 5 chemin de Bramofan, 31120 Roques, France
⁸ Unité Patrimoine Naturel − Centre d'expertise et de données (2006 OFB – MNHN – CNRS – IRD), Muséum national d'Histoire naturelle, 36 rue Geoffroy-Saint-Hilaire CP 41, 75005 Paris, France
⁹ UMR Biologie des organismes et écosystèmes aquatiques (BOREA 8067), MNHN, CNRS, IRD, SU, UCN, UA, 57 rue Cuvier CP26, 75005 Paris, France

^* Corresponding author: gael.denys@mnhn.fr

Received: 10 June 2023
Accepted: 9 January 2024

Abstract

Length–weight relationships for Pike Esox aquitanicus and Esox lucius from France are provided. A total of 9070 specimens were collected, measured and weighted from 1981 to 2022 throughout France by Departmental Angling Federations and the French Agency of Biodiversity during their survey by electrofishing. For all species, the values of b are 2.960 for E. aquitanicus and 2.987 for Esox lucius. We hypothetize this difference by the poor environment where live the Aquitanian pike with no abundant available food and small prey fish species which do not contribute to good conditions for the growth. The study provides the first reference of length–weight relationships for E. aquitanicus.

Key words: Esox aquitanicus / Esox lucius / France / length / weight / endemic species

This is an Open Access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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