European flounder foraging movements in an estuarine nursery seascape inferred from otolith microchemistry and stable isotopes - Archive ouverte HAL Access content directly
Journal Articles Marine Environmental Research Year : 2022

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

(1, 2) , (1, 2, 3) , (4) , (5, 6) , (4) , (1, 2) , (6, 2) , (2) , (4) , (1, 7) , (1, 2)
1
2
3
4
5
6
7

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.
Not file

Dates and versions

hal-03843206 , version 1 (08-11-2022)

Identifiers

Cite

Nils Teichert, Anne Lizé, Hélène Tabouret, Jean-Marc Roussel, Gilles Bareille, et al.. European flounder foraging movements in an estuarine nursery seascape inferred from otolith microchemistry and stable isotopes. Marine Environmental Research, 2022, 182, pp.105797. ⟨10.1016/j.marenvres.2022.105797⟩. ⟨hal-03843206⟩
0 View
0 Download

Altmetric

Share

Gmail Facebook Twitter LinkedIn More