scholarly journals Artificial lakes delay the migration of brown trout Salmo trutta smolts: a comparison of migratory behaviour in a stream and through an artificial lake

2019 ◽  
Vol 94 (5) ◽  
pp. 745-751
Author(s):  
Michael Schwinn ◽  
Henrik Baktoft ◽  
Kim Aarestrup ◽  
Anders Koed
Keyword(s):  
Brown Trout ◽  
Salmo Trutta ◽  
Migratory Behaviour ◽  
Artificial Lake ◽  
Artificial Lakes ◽  
Brown Trout Salmo Trutta

scholarly journals Telemetry observations of predation and migration behaviour of brown trout (Salmo trutta ) smolts negotiating an artificial lake

2018 ◽  
Vol 34 (8) ◽  
pp. 898-906 ◽  
Author(s):  
Michael Schwinn ◽  
Henrik Baktoft ◽  
Kim Aarestrup ◽  
Martyn C. Lucas ◽  
Anders Koed
Keyword(s):  
Brown Trout ◽  
Salmo Trutta ◽  
Artificial Lake ◽  
Migration Behaviour ◽  
Brown Trout Salmo Trutta ◽  
And Migration

A continuum of life history tactics in a brown trout (Salmo trutta) population

2005 ◽  
Vol 62 (7) ◽  
pp. 1600-1610 ◽  
Author(s):  
Julien Cucherousset ◽  
Dominique Ombredane ◽  
Katia Charles ◽  
Frédéric Marchand ◽  
Jean-Luc Baglinière
Keyword(s):  
Life History ◽  
Brown Trout ◽  
Salmo Trutta ◽  
Environmental Variability ◽  
Continuous Distribution ◽  
Juvenile Growth ◽  
Migratory Behaviour ◽  
Brown Trout Salmo Trutta ◽  
And Migration ◽  
Pit Tagging

Life history tactics of the brown trout (Salmo trutta) population of the Oir River (Normandy, France) were studied using passive integrated transponder (PIT) tagging data of five consecutive cohorts (5900 individuals) monitored between 1995 and 2002. Results demonstrate that (i) life history traits vary among cohorts, chiefly caused by environmental variability, (ii) juvenile growth, particularly second-year growth, plays an important role in the determination of the growing environment and trout exhibit variable migratory behaviour (from remaining in the natal brook to migrating in the sea) related to their juvenile growth rate, and (iii) the description of life history tactics (including juvenile growth, fine-scale migratory behaviour, and reproduction) can be clarified. Tactics are expressed along a continuum in time (age to reproduce) and space (distance of migration). Flexible life history tactics varying with juvenile growth is consistent with previous studies, but the use of empiric data on growth and migration from PIT tagging allows refining the description of life history tactics, taking into account their continuous distribution in time and space.

Resistance of erythrocytes from Brown trout (Salmo trutta m. trutta L.) affected by ulcerative dermal necrosis syndrome

2011 ◽  
Vol 14 (3) ◽  
pp. 443-448 ◽  
Author(s):  
N. Kurhalyuk ◽  
H. Tkachenko ◽  
K. Pałczyńska
Keyword(s):  
Oxidative Stress ◽  
Lipid Peroxidation ◽  
Brown Trout ◽  
Salmo Trutta ◽  
Thiobarbituric Acid ◽  
Control Group ◽  
Thiobarbituric Acid Reactive Substance ◽  
Tbars Level ◽  
Reactive Substance ◽  
Brown Trout Salmo Trutta

Resistance of erythrocytes from Brown trout (Salmo trutta m. trutta L.) affected by ulcerative dermal necrosis syndrome In the present work we evaluated the effect of ulcerative dermal necrosis (UDN) syndrome on resistance of erythrocytes to haemolytic agents and lipid peroxidation level in the blood from brown trout (Salmo trutta m. trutta L.). Results showed that lipid peroxidation increased in erythrocytes, as evidenced by high thiobarbituric acid reactive substance (TBARS) levels. Compared to control group, the resistance of erythrocytes to haemolytic agents was significantly lower in UDN-positive fish. Besides, UDN increased the percent of hemolysated erythrocytes subjected to the hydrochloric acid, urea and hydrogen peroxide. Results showed that UDN led to an oxidative stress in erythrocytes able to induce enhanced lipid peroxidation level, as suggested by TBARS level and decrease of erythrocytes resistance to haemolytic agents.

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