The effects of nutritional state, sex and body size on the marine migration behaviour of sea trout

2021 ◽  
Author(s):  
SH Eldøy ◽  
X Bordeleau ◽  
MJ Lawrence ◽  
EB Thorstad ◽  
AG Finstad ◽  
...  
Keyword(s):  
Body Size ◽  
Nutritional State ◽  
Sea Trout ◽  
Migration Behaviour ◽  
Marine Migration

Comparison of the riverine and early marine migration behaviour and survival of wild and hatchery-reared sea trout Salmo trutta smolts

2014 ◽  
Vol 496 ◽  
pp. 197-206 ◽  
Author(s):  
K Aarestrup ◽  
H Baktoft ◽  
A Koed ◽  
D del Villar-Guerra ◽  
EB Thorstad
Keyword(s):  
Salmo Trutta ◽  
Sea Trout ◽  
Migration Behaviour ◽  
Marine Migration

Refuge use in a killifish: influence of body size and nutritional state

2002 ◽  
Vol 80 (4) ◽  
pp. 782-788 ◽  
Author(s):  
Lisa M Dowling ◽  
Jean-Guy J Godin
Keyword(s):  
Body Size ◽  
Risk Taking ◽  
Control Model ◽  
Nutritional State ◽  
Refuge Use ◽  
Individual Fitness ◽  
Threatening Stimulus ◽  
Energetic State ◽  
Predator Model ◽  
Individual Body

Refuge use by animals provides greater safety from predation. A refuging animal continuously must decide whether to stay in the refuge or to emerge into open habitat. This decision may depend on its energetic state and vulnerability to predation, both of which can vary with individual body size. We experimentally tested the concurrent effects of body size and nutritional (hunger) state on refuge use in the banded killifish (Fundulus diaphanus). Individual killifish were "attacked" in an open laboratory habitat (containing food) by either a trout predator model or a control model that did not resemble a trout. Frightened fish typically fled into a foodless refuge nearby. The amount of time that killifish spent in the refuge before emerging increased significantly with body length, but was not affected by their current nutritional state or the threatening stimulus (type of model). Smaller killifish were thus more risk-prone than larger conspecifics irrespective of their current nutritional state. Such size-mediated risk-taking behaviour has important consequences for individual fitness and implications for population and community composition and dynamics in nature.

scholarly journals Temperature and depth preferences of adult sea trout Salmo trutta during the marine migration phase

2018 ◽  
Vol 599 ◽  
pp. 209-224 ◽  
Author(s):  
ML Kristensen ◽  
D Righton ◽  
D del Villar-Guerra ◽  
H Baktoft ◽  
K Aarestrup
Keyword(s):  
Salmo Trutta ◽  
Sea Trout ◽  
Marine Migration

The first months at sea: marine migration and habitat use of sea trout Salmo trutta post-smolts

2016 ◽  
Vol 89 (3) ◽  
pp. 1624-1640 ◽  
Author(s):  
A. C. Flaten ◽  
J. G. Davidsen ◽  
E. B. Thorstad ◽  
F. Whoriskey ◽  
L. Rønning ◽  
...  
Keyword(s):  
Habitat Use ◽  
Salmo Trutta ◽  
Sea Trout ◽  
Marine Migration

Adolescent Gender Differences in Weight, Activity, and Body-Size Perception

2012 ◽  
Author(s):  
Judith R. Mccalla ◽  
Katie E. Chipungu ◽  
Patrice G. Saab ◽  
Amanda J. Countryman ◽  
Erin N. Etzel ◽  
...  
Keyword(s):  
Gender Differences ◽  
Body Size ◽  
Size Perception ◽  
Body Size Perception
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