The strontium content of roe collected from spawning brown trout Salmo trutta L. reflects recent otolith microchemistry

2008 ◽  
Vol 72 (7) ◽  
pp. 1847-1854 ◽  
Author(s):  
E. M. Waite ◽  
G. P. Closs ◽  
J. Kim ◽  
B. Barry ◽  
A. Markwitz ◽  
...  
Keyword(s):  
Brown Trout ◽  
Salmo Trutta ◽  
Otolith Microchemistry ◽  
Strontium Content ◽  
Brown Trout Salmo Trutta

Experimental evidence simultaneously confirms and contests assumptions implicit to otolith microchemistry research

2014 ◽  
Vol 71 (3) ◽  
pp. 356-365 ◽  
Author(s):  
Geoff Veinott ◽  
Peter A.H. Westley ◽  
Craig F. Purchase ◽  
Lucas Warner
Keyword(s):  
Life History ◽  
Maternal Effects ◽  
Brown Trout ◽  
Salmo Trutta ◽  
Otolith Microchemistry ◽  
Maternal Influence ◽  
Elemental Concentrations ◽  
The Core ◽  
Chemical Signatures ◽  
Brown Trout Salmo Trutta

Otolith microchemistry has become an integral fisheries tool, yet the utility of this tool hinges on the assumptions that (i) elements are temporally stable once deposited in the otolith and (ii) the influence of maternal effects are temporally limited. Here we test these assumptions by quantifying through time the chemical signatures from two families of brown trout (Salmo trutta), differing in maternal life history (i.e., mothers were either anadromous or nonanadromous). Concentrations of zinc, strontium, and barium were temporally stable in the core signatures between different aged siblings, but significant differences in the elemental concentrations of magnesium and manganese were detected. The Sr concentration (indicative of maternal influence) on the growing surface of otoliths converged briefly between families at 3–5 weeks post-emergence, but never stabilized during the course of the experiment. Taken together, these results both confirm and call into question assumptions implicit to otolith microchemistry research. To the extent that the patterns observed here are representative across species, caution is warranted when using otolith microchemistry to address certain types of ecological questions in nature.

Life-history variation of two inland salmonids revealed through otolith microchemistry analysis

2019 ◽  
Vol 76 (11) ◽  
pp. 1971-1981 ◽  
Author(s):  
Lindsy R. Ciepiela ◽  
Annika W. Walters
Keyword(s):  
Rainbow Trout ◽  
Brown Trout ◽  
Salmo Trutta ◽  
Spatial Ecology ◽  
Otolith Microchemistry ◽  
Life History Variation ◽  
Natal Origin ◽  
Rainbow Trout Oncorhynchus Mykiss ◽  
Spawning Site ◽  
Brown Trout Salmo Trutta

Increasingly, otolith microchemistry analysis is used as a tool to trace fish migrations, especially migrations of diadromous fishes. Yet, few studies have used otolith microchemistry to trace migrations in small inland watersheds, leaving major knowledge gaps in our understanding of inland fish spatial ecology. Here, we evaluate the use of tributary habitat for spawning and describe and compare fluvial brown trout (Salmo trutta) and rainbow trout (Oncorhynchus mykiss) natal origin distribution, time spent in natal streams, and spawning site fidelity. 63% of rainbow trout and 57% of brown trout migrated after hatching. Brown trout showed greater variation in time spent in natal tributaries, suggesting that individuals are temporally distributing risk among offspring. By contrast, rainbow trout showed greater variation in natal origin, suggesting that individuals are spatially distributing risk among offspring. Our results indicate there is high inter- and intraspecific migration variation in inland salmonid populations, which may be linked to access to a mosaic of spawning and rearing habitat types.

Determining the spatial distribution of spawning by anadromous and resident brown trout Salmo trutta L using strontium content of eggs collected from redds

2010 ◽  
Vol 20 (3) ◽  
pp. 377-383 ◽  
Author(s):  
Esben A. Kristensen ◽  
Gerard P. Closs ◽  
Ricky Olley ◽  
Jonathan Kim ◽  
Malcolm Reid ◽  
...  
Keyword(s):  
Spatial Distribution ◽  
Brown Trout ◽  
Salmo Trutta ◽  
Strontium Content ◽  
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
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