scholarly journals Anadromy, potamodromy and residency in brown trout Salmo trutta : the role of genes and the environment

2019 ◽  
Vol 95 (3) ◽  
pp. 692-718 ◽  
Author(s):  
Andrew Ferguson ◽  
Thomas E. Reed ◽  
Tom F. Cross ◽  
Philip McGinnity ◽  
Paulo A. Prodöhl
Keyword(s):  
Brown Trout ◽  
Salmo Trutta ◽  
Brown Trout Salmo Trutta

scholarly journals Extended spawning in brown trout (Salmo trutta) populations from the Southern Iberian Peninsula: the role of climate variability

2015 ◽  
Vol 73 (AoP) ◽  
Author(s):  
José E. Larios-López ◽  
José M. Tierno de Figueroa ◽  
Miguel Galiana-García ◽  
Javier Gortázar ◽  
Carlos Alonso
Keyword(s):  
Climate Variability ◽  
Iberian Peninsula ◽  
Brown Trout ◽  
Salmo Trutta ◽  
Brown Trout Salmo Trutta

scholarly journals Oxidative stress and partial migration in brown trout (Salmo trutta)

2017 ◽  
Vol 95 (11) ◽  
pp. 829-835 ◽  
Author(s):  
Kim Birnie-Gauvin ◽  
Kathryn S. Peiman ◽  
Martin H. Larsen ◽  
Henrik Baktoft ◽  
Kim Aarestrup ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Antioxidant Capacity ◽  
Brown Trout ◽  
Salmo Trutta ◽  
Oxidative Status ◽  
Partial Migration ◽  
Migration Strategy ◽  
Brown Trout Salmo Trutta ◽  
And Migration

During migration, animals are typically limited by their endogenous energetic resources that must be allocated to the physiological costs associated with locomotion, as well as avoiding and (or) compensating for oxidative stress. To date, there have been few attempts to understand the role of oxidative status in migration biology, particularly in fish. Semi-anadromous brown trout (Salmo trutta L., 1758) exhibit partial migration, where some individuals smoltify and migrate to sea, and others become stream residents, providing us with an excellent model to investigate the link between oxidative stress and migration. Using the brown trout, we obtained blood samples from juveniles from a coastal stream in Denmark in the fall prior to peak seaward migration that occurs in the spring, and assayed for antioxidant capacity (oxygen radical absorbance capacity) and oxidative stress levels (ratio of oxidized to reduced glutathione). We found that individuals that migrated had higher antioxidant capacity than residents and that future migration date was negatively correlated with both antioxidant capacity and body length in the fall. This study provides the first evidence that oxidative status is associated with migration strategy and timing, months in advance of the actual migration, and provides insight into the role of oxidative status in animal migration.

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