Project

RELIEFS

Which early life stage(s) limits sole recruitment in the Bay of Biscay ?
  • Timeframe : 2024 -
  • Local Budget: 24 000 €
  • Coordinator: AGLIA
  • Contact: Jean-Baptiste LECOMTE
  • Keywords : Cycle de vie / Habitats essentiels / Poissons / Populations / Survie / Analyses de séries temporelles / Modélisation statistique / Statistiques multivariées

The sole is an emblematic species of the Bay of Biscay. Although a considerable number of vessels rely on this species, we have observed a decline in recruitment that has accelerated over the past decade, despite the implementation of management measures that have resulted in a reduction in fishing mortality.

The objective of this project is to ascertain at which stage of the life cycle a decline in sole survival can be identified, which would ultimately result in a reduction in recruitment. The data obtained from the fishing and environmental surveys will be analysed statistically in order to identify a break in abundance between the different life stages. This preliminary stage will enable us to better target the stage of the life cycle requiring in-depth research, which will be the subject of a larger-scale project to identify the factors influencing sole survival on the stages identified in this project.


Publications issued from the project

Grandremy Nina, Lecomte Jean-Baptiste, Le Pape Olivier (2026). Identifying the critical life stage of a recruitment-driven decline in an exploited marine fish stock: The Bay of Biscay common sole. Progress in Oceanography, 2026, 244, ⟨10.1016/j.pocean.2026.103724⟩

Grandremy Nina, Lecomte Jean-Baptiste, Le Pape Olivier (2025). RELIEFS Project IDENTIFYING THE LIFE CYCLE STAGES THAT LIMIT THE RECRUITMENT OF COMMON SOLE IN THE GULF OF GASCOGNE. INSTITUT AGRO RENNES ANGERS. 2025

People involved

LE PAPE Olivier, Scientist
Phone : +33 2 23 48 55 31
Email : olivier.le.pape@institut-agro.fr
LECOMTE Jean-Baptiste, Scientist
Phone : +33 2 40 37 42 35
Email : jean.baptiste.lecomte@ifremer.fr

Funding and Support

France Filière Pêche : Enjeux immédiats