scholarly journals Comparative responses to endocrine disrupting compounds in early life stages of Atlantic salmon, Salmo salar

2014 ◽  
Vol 152 ◽  
pp. 1-10 ◽  
Author(s):  
T.A. Duffy ◽  
L.R. Iwanowicz ◽  
S.D. McCormick
Keyword(s):  
Atlantic Salmon ◽  
Salmo Salar ◽  
Early Life ◽  
Endocrine Disrupting Compounds ◽  
Life Stages ◽  
Early Life Stages ◽  
Atlantic Salmon Salmo Salar ◽  
Endocrine Disrupting

Distribution of Al, Cd, Cu, Fe, Mn, Pb and Zn in Liver, Gills and Muscle of Early Life Stages of Atlantic Salmon (Salmo salar)

2019 ◽  
Vol 102 (3) ◽  
pp. 419-424
Author(s):  
María Gabriela Lobos ◽  
Claudio Sáez ◽  
Alejandra Chavarría ◽  
Maritza Sepúlveda ◽  
Patricia Díaz ◽  
...  
Keyword(s):  
Atlantic Salmon ◽  
Salmo Salar ◽  
Early Life ◽  
Life Stages ◽  
Early Life Stages ◽  
Atlantic Salmon Salmo Salar

Spatial distribution of Atlantic salmon (Salmo salar) breeders: among- and within-river variation and predicted consequences for offspring habitat availability

2010 ◽  
Vol 67 (12) ◽  
pp. 1993-2001 ◽  
Author(s):  
Anders Gravbrøt Finstad ◽  
Sigurd Einum ◽  
Leif Magnus Sættem ◽  
Bjart Are Hellen
Keyword(s):  
Spatial Distribution ◽  
Atlantic Salmon ◽  
Salmo Salar ◽  
Early Life ◽  
Skewed Distribution ◽  
Habitat Availability ◽  
Life Stages ◽  
Early Life Stages ◽  
Juvenile Dispersal ◽  
Atlantic Salmon Salmo Salar

The spatial distribution of breeders within populations may have important implications for offspring habitat availability in species where mobility of early life stages is restricted. Here we address this issue using time series of spawner distributions from eight Norwegian Atlantic salmon ( Salmo salar ) populations. Whereas spawners distribute themselves uniformly along the length of the rivers in some populations, others show a heavily skewed distribution. Linear mixed models identified pronounced and temporally consistent among-population differences in spawner distributions. Using a model of limited juvenile dispersal from nests following emergence, we show that the observed spawner distributions are predicted to result in significant proportions of rivers being inaccessible for young of the year during early life stages, and the magnitude of this effect differs among populations (e.g., ranging from 27% to 59% for dispersal distance of 250 m). Thus, assuming population regulation during early but not later juvenile stages, consistent differences in spawner distributions among populations such as those observed here may translate into differences in productivity (i.e., carrying capacity) as well as egg densities required for populations to reach their spawning targets.

Early life bacterial succession under different diet regime Atlantic salmon (Salmo salar L.)

2020 ◽  
Author(s):  
Eleni Nikouli ◽  
Konstantinos Kormas ◽  
Yang Jin ◽  
Yngvar Olsen ◽  
Ingrid Bakke ◽  
...  
Keyword(s):  
Atlantic Salmon ◽  
Fish Oil ◽  
Early Life ◽  
Life Stages ◽  
Early Life Stages ◽  
Bacterial Phyla ◽  
Lipid Source ◽  
First Feeding ◽  
Bacterial Succession ◽  
Dietary Treatments

Abstract Backgound: The present study investigated the effect of different lipid source in the feed on the colonization and the bacterial succession in early life stages (fertilized eggs until 93 days post first feeding) of S. salar. The two diets used in this study, FD (fish oil based diet) and VD (vegetable oil based diet), were formulated to cover the fish nutritional requirements and except the lipid source the components were identical between them.Hindgut samples collected at 0, 35, 65 and 93 days post first feeding (dpff). Moreover, fertilized eggs, yolk sac larvae, rearing water and feed were also sampled in order to assess a possible contribution of their microbiota to the colonization of the gut. To analyze the composition of the bacterial communities, the Illumina MiSeq platform was used. Results: S. salar growth variables (mean wet weight and total length) did not differ significantly during the experiment (p> 0.05) across replicate tanks and between dietary treatments. The analysis of the 16S rDNA sequencing data revealed a total of 4548 unique OTUs, affiliated in 21 bacterial phyla. Proteobacteria, Firmicutes, Actinobacteria and Bacteroidetes were the dominant bacterial phyla. 13 OTUs were shared among all S. salar samples independent of life stage and diet treatment. Similarity percentages analysis (SIMPER) based on Bray–Curtis distance, showed that the average dissimilarity among the groups of the same life stages was 76.0%, whereas the average dissimilarity within groups of the same dietary treatment was 78.5% (FD) and 83.6% (VD). Conclusion: Feeding on either fish oil or vegetable oil-based diets, did not result in significant differences in the intestinal microbiota. The composition of gut microbiota did not differ significantly between the two dietary treatments, but changed with age, and each stage was characterized by different dominant bacteria. These OTUs are related to species that provide different functions and have been isolated from a variety of environments. Finally, this study revealed the occurrence of a core microbiota independent of the studied life stages and diet during the early life stages of Atlantic salmon.

Freshwater habitat of Atlantic salmon (Salmo salar)

2000 ◽  
Vol 57 (2) ◽  
pp. 497-506 ◽  
Author(s):  
Agnès Bardonnet ◽  
Jean-Luc Baglinière
Keyword(s):  
Atlantic Salmon ◽  
Salmo Salar ◽  
Spatial Scales ◽  
Life Stage ◽  
Habitat Requirements ◽  
Life Stages ◽  
Freshwater Habitat ◽  
Geomorphological Unit ◽  
Atlantic Salmon Salmo Salar

This perspective summarizes our knowledge of the freshwater habitat of Atlantic salmon (Salmo salar). The article is organized by life stage and identifies areas where more research is needed. For example, little is known of the kelt and presmolt life stages despite their importance in stock maintenance. We also believe that further investigation is required to assess the relevance of variables currently used to characterize habitat and that more attention should be focussed on adult and embryo-larva habitat requirements. We also discuss the fact that the majority of research is directed at habitat at the micro (i.e., immediate area around the fish) and macro scales (area of the geomorphological unit), while the influence of habitat at higher spatial scales should also be considered.

Segregation of infectious pancreatic necrosis resistance QTL in the early life cycle of Atlantic Salmon (Salmo salar)

2010 ◽  
Vol 41 (5) ◽  
pp. 531-536 ◽  
Author(s):  
A. A. Gheyas ◽  
R. D. Houston ◽  
J. C. Mota-Velasco ◽  
D. R. Guy ◽  
A. E. Tinch ◽  
...  
Keyword(s):  
Life Cycle ◽  
Atlantic Salmon ◽  
Salmo Salar ◽  
Early Life ◽  
Pancreatic Necrosis ◽  
Resistance Qtl ◽  
Atlantic Salmon Salmo Salar ◽  
Infectious Pancreatic Necrosis
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