Effects of woody debris and the supply of terrestrial invertebrates on the diet and growth of brown trout (Salmo trutta) in a boreal stream

2014 ◽  
Vol 59 (12) ◽  
pp. 2488-2501 ◽  
Author(s):  
Pär Gustafsson ◽  
Larry A. Greenberg ◽  
Eva Bergman
Keyword(s):  
Brown Trout ◽  
Salmo Trutta ◽  
Woody Debris ◽  
Terrestrial Invertebrates ◽  
Brown Trout Salmo Trutta

Woody debris and terrestrial invertebrates – effects on prey resources for brown trout (Salmo trutta) in a boreal stream

2014 ◽  
Vol 97 (5) ◽  
pp. 529-542 ◽  
Author(s):  
Pär Gustafsson ◽  
Larry A. Greenberg ◽  
Eva Bergman
Keyword(s):  
Brown Trout ◽  
Salmo Trutta ◽  
Woody Debris ◽  
Terrestrial Invertebrates ◽  
Brown Trout Salmo Trutta ◽  
Prey Resources

Effects of woody debris on the growth and behaviour of brown trout in experimental stream channels

1998 ◽  
Vol 76 (1) ◽  
pp. 56-61 ◽  
Author(s):  
Karl Sundbaum ◽  
Ingemar Näslund
Keyword(s):  
Brown Trout ◽  
Salmo Trutta ◽  
Woody Debris ◽  
Feeding Activity ◽  
Control Channel ◽  
Invertebrate Drift ◽  
Stream Channels ◽  
Gravel Bed ◽  
Brown Trout Salmo Trutta ◽  
Experimental Stream

We examined the effects of woody debris on the growth and behaviour of brown trout (Salmo trutta) in experimental stream channels. Two types of habitat were used in the study: a complex habitat created by placing woody debris on a gravel bed and a uniform habitat consisting of a gravel bed only. The experiment was run both outdoors with wild fish that fed on natural invertebrate drift and indoors with hatchery fish that were fed artificial food. In both treatments most of the fish lost mass. In all trials, however, the fish in the woody debris channel lost less mass than the fish in the control channel. Study of the fishes' behaviour revealed less swimming activity, less aggression, and less feeding activity in the woody debris channel than in the control channel. The results of this study indicate that the presence of woody debris decreases intraspecific competition through visual isolation, allowing fish to reduce aggressive interactions and energy expenditure.

Stable isotope niche convergence in coexisting native and non-native salmonids across age classes

2020 ◽  
Vol 77 (8) ◽  
pp. 1359-1365 ◽  
Author(s):  
Julien Cucherousset ◽  
Libor Závorka ◽  
Sergine Ponsard ◽  
Régis Céréghino ◽  
Frédéric Santoul
Keyword(s):  
Stable Isotope ◽  
Brown Trout ◽  
Brook Trout ◽  
Native Species ◽  
Salmo Trutta ◽  
Niche Overlap ◽  
Age Classes ◽  
Terrestrial Invertebrates ◽  
Brown Trout Salmo Trutta ◽  
Native Salmonids

Niche divergence resulting from coevolution is commonly believed to favour coexistence among competing species; however, recent investigations have demonstrated that an unexpected niche convergence can occur when native and non-native species coexist. Yet, our understanding of the ontogenetic characteristics of this niche convergence remains limited. In the present study, we quantified the stable isotope niche of native brown trout (Salmo trutta) in allopatry and sympatry with non-native brook trout (Salvelinus fontinalis) across four age classes. Our results demonstrated that brown trout displayed a stable isotope niche closer to brook trout in sympatry than in allopatry, which was likely driven by an increased consumption of terrestrial invertebrates by sympatric brown trout. Stable isotope niche overlap was the strongest for young-of-the-year individuals and the intensity of overlap between sympatric native brown trout and non-native brook trout decreased during ontogeny. These findings indicate that niche convergence between the species occur at the earliest age class of the native species and are maintained across ontogeny.

Population density of migratory and resident brown trout (Salmo trutta) in relation to altitude: evidence for a migration cost

2001 ◽  
Vol 70 (1) ◽  
pp. 112-121 ◽  
Author(s):  
T. Bohlin ◽  
J. Pettersson ◽  
E. Degerman
Keyword(s):  
Population Density ◽  
Brown Trout ◽  
Salmo Trutta ◽  
Migration Cost ◽  
Brown Trout Salmo Trutta

Massive infection of Cystidicoloides ephemeridarum discovered during a toxicological survey on an unusual case of skeletal deformities in brown trout Salmo trutta

2020 ◽  
Author(s):  
C Iaria ◽  
N Spanò ◽  
A Smeriglio ◽  
F Capparucci ◽  
G De Benedetto ◽  
...  
Keyword(s):  
Brown Trout ◽  
Salmo Trutta ◽  
Unusual Case ◽  
Skeletal Deformities ◽  
Brown Trout Salmo Trutta

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.

Evaluation of brown trout (Salmo trutta fario) fillets’ shelf life: Fed with a humic supplemented diet

2021 ◽  
Vol 29 ◽  
pp. 100675
Author(s):  
Muhammed Atamanalp ◽  
Arzu Ucar ◽  
Esat Mahmut Kocaman ◽  
Gonca Alak
Keyword(s):  
Shelf Life ◽  
Brown Trout ◽  
Salmo Trutta ◽  
Brown Trout Salmo Trutta ◽  
Salmo Trutta Fario

scholarly journals Effect of water temperature on the morbidity of Tetracapsuloides bryosalmonae (Myxozoa) to brown trout ( Salmo trutta ) under laboratory conditions

2021 ◽  
Author(s):  
Karoline Waldner ◽  
Martin Borkovec ◽  
Florian Borgwardt ◽  
Günther Unfer ◽  
Mansour El‐Matbouli
Keyword(s):  
Water Temperature ◽  
Brown Trout ◽  
Salmo Trutta ◽  
Laboratory Conditions ◽  
Effect Of Water ◽  
Brown Trout Salmo Trutta ◽  
Tetracapsuloides Bryosalmonae
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