European flounder foraging movements in an estuarine nursery seascape inferred from otolith microchemistry and stable isotopes

TitleEuropean flounder foraging movements in an estuarine nursery seascape inferred from otolith microchemistry and stable isotopes
Publication TypeJournal Article
Year of Publication2022
AuthorsTeichert, N, Lizé, A, Tabouret, H, Roussel, J-M, Bareille, G, Trancart, T, Acou, A, Virag, L-S, Pecheyran, C, Carpentier, A, Feunteun, E
JournalMarine Environmental Research
Volume182
Pagination105797
Date PublishedJan-12-2022
ISSN01411136
Abstract

Despite the importance of estuarine nurseries in the regulation of many fish stocks, temporal and spatial movements and habitat use patterns of juvenile fish remain poorly understood. Overall, combining several movement metrics allowed us to characterize dispersal patterns of juvenile flounder, Platichthys flesus, along an estuarine seascape. Specifically, we investigated otolith microchemistry signatures (Sr:Ca and Ba:Ca ratios) and stable isotope ratios (δ13C and δ15N) in muscles of these juveniles, during three consecutive years to assess inter-annual fluctuations in their home range and isotopic niches. The morphological condition and lipid content of individuals were lower in years of high as compared to low dispersal along the estuarine gradient. We discuss these results in relation to the ecosystem productivity and intra- and inter-specific competition level, which in turn affects movements and foraging behaviors of juvenile flounders.

URLhttps://linkinghub.elsevier.com/retrieve/pii/S0141113622002422
DOI10.1016/j.marenvres.2022.105797
Short TitleMarine Environmental Research
Catégorie HCERES
ACL - Peer-reviewed articles
Publication coopération et recherche SUD
Non