Adaptation of cultured salmon Salmo salar (Salmonidae) yearlings to natural environments

Acclimation effect on fish behavioural characteristics: determination of appropriate acclimation period for different species

“…Although the salmonids ( O. mykiss and S. salar ) tested in the present study slightly differed in size, their behavioural patterns were similar.Fish farming and holding conditions may be also viewed as factors affecting fish behavioural characteristics. Several studies have been conducted to understand how the neurobiological, physiological and behavioural characteristics of hatchery‐reared fish differ from those of their wild conspecifics (Alekseev et al ., 2017; Mes et al ., 2018; Sánchez‐González & Nicieza, 2017). In their study, Alekseev et al .…”

“…In their study, Alekseev et al . (2017) reported that behavioural patterns of the hatchery‐reared and wild‐origin salmon juveniles remained different throughout the testing period, because the behavioural habits acquired under the farming conditions more commonly affected juvenile fish survival in natural environments. Mes et al .…”

“…Although the salmonids (O. mykiss and S. salar) tested in the present study slightly differed in size, their behavioural patterns were similar.Fish farming and holding conditions may be also viewed as factors affecting fish behavioural characteristics. Several studies have been conducted to understand how the neurobiological, physiological and behavioural characteristics of hatchery-reared fish differ from those of their wild conspecifics (Alekseev et al, 2017;Mes et al, 2018;S anchez-Gonz alez & Nicieza, 2017). In their study, Alekseev et al (2017) reported that behavioural patterns of the hatchery-reared and wild-origin salmon juveniles remained different throughout the testing period, because the behavioural habits acquired under the farming conditions more commonly affected juvenile fish survival in natural environments.…”

“…Several studies have been conducted to understand how the neurobiological, physiological and behavioural characteristics of hatchery-reared fish differ from those of their wild conspecifics (Alekseev et al, 2017;Mes et al, 2018;S anchez-Gonz alez & Nicieza, 2017). In their study, Alekseev et al (2017) reported that behavioural patterns of the hatchery-reared and wild-origin salmon juveniles remained different throughout the testing period, because the behavioural habits acquired under the farming conditions more commonly affected juvenile fish survival in natural environments. Mes et al (2018) confirmed that the hatchery environment affects the brain regions that are responsible for learning processes and stress responses, providing a neuronal foundation for the occurrence of behavioural differences between hatchery-reared and wild fish populations.…”