scholarly journals Patterns of Tetracapsuloides bryosalmonae infection of three salmonid species in large, deep Norwegian lakes

2021 ◽  
Author(s):  
Tone Jøran Oredalen ◽  
Mona Sæbø ◽  
Tor Atle Mo
Keyword(s):  
Salmonid Species ◽  
Tetracapsuloides Bryosalmonae

scholarly journals Genomic patterns of diversity and divergence of two introduced salmonid species in Patagonia, South America

2017 ◽  
Vol 10 (4) ◽  
pp. 402-416 ◽  
Author(s):  
Shawn R. Narum ◽  
Pablo Gallardo ◽  
Cristian Correa ◽  
Amanda Matala ◽  
Daniel Hasselman ◽  
...  
Keyword(s):  
South America ◽  
Salmonid Species ◽  
Genomic Patterns

Survey of the Genetic Variation Among Eastern Lake Superior Lake Trout (Salvelinus namaycush)

1981 ◽  
Vol 38 (12) ◽  
pp. 1738-1746 ◽  
Author(s):  
Terrence R. Dehring ◽  
Anne F. Brown ◽  
Charles H. Daugherty ◽  
Stevan R. Phelps
Keyword(s):  
Genetic Variation ◽  
Gel Electrophoresis ◽  
Lake Trout ◽  
Lake Superior ◽  
Salvelinus Namaycush ◽  
Starch Gel Electrophoresis ◽  
Average Heterozygosity ◽  
Management Implications ◽  
Salmonid Species ◽  
Starch Gel

Patterns of genetic variation among lake trout (Salvelinus namaycush) of eastern Lake Superior were examined using starch gel electrophoresis. We used 484 individuals sampled from three areas, representing three morphological types (leans, humpers, and siscowets). Of 50 loci examined, 44 were monomorphic in all groups sampled. Genetic variation occurs at six loci AAT-1,2, MDH-3,4, ME-1, and SOD-1. The average heterozygosity found (H = 0.015) is low relative to other salmonid species. A significant amount of heterogeneity exists among the 10 lake trout samples. These differences are due to variation within as well as between morphological types. The significance and management implications of these data are discussed.Key words: genetic variation, lake trout, Salvelinus namaycush, Lake Superior

scholarly journals Earlier Migration Timing, Decreasing Phenotypic Variation, and Biocomplexity in Multiple Salmonid Species

PLoS ONE ◽  
2013 ◽  
Vol 8 (1) ◽  
pp. e53807 ◽  
Author(s):  
Ryan P. Kovach ◽  
John E. Joyce ◽  
Jesse D. Echave ◽  
Mark S. Lindberg ◽  
David A. Tallmon
Keyword(s):  
Phenotypic Variation ◽  
Migration Timing ◽  
Salmonid Species

scholarly journals Salmon lice evasion, susceptibility, retention, and development differ amongst host salmonid species

2017 ◽  
Vol 75 (3) ◽  
pp. 1071-1079 ◽  
Author(s):  
Samantha Bui ◽  
Elina Halttunen ◽  
Agnes M Mohn ◽  
Tone Vågseth ◽  
Frode Oppedal
Keyword(s):  
Atlantic Salmon ◽  
Chinook Salmon ◽  
Salmo Trutta ◽  
Parasite Development ◽  
Lepeophtheirus Salmonis ◽  
Sea Trout ◽  
Salmon Lice ◽  
Salmonid Species ◽  
Host Parasite ◽  
Temporal Overlap

Abstract With different ecological characteristics amongst salmonid species, their response to parasitic infestation is likely to vary according to their spatial and temporal overlap with the parasite. This study investigated the host–parasite interactions amongst three species of salmonids and the ectoparasitic salmon louse, Lepeophtheirus salmonis. To determine any variation in infestation parameters amongst salmonids, single population groups of Atlantic salmon (Salmo salar), chinook salmon (Onchorhynchus tshawytscha), and previously-infested and naïve sea trout (Salmo trutta) were exposed to a controlled infestation challenge. We found that chinook salmon and both sea trout groups were more susceptible to acquiring lice than Atlantic salmon. Behavioural responses during infestation were more pronounced in Atlantic and chinook salmon. Parasite development was similar in lice attached to Atlantic salmon and sea trout, but hindered on chinook salmon. At 16 days post-infestation, chinook salmon had reduced lice loads to the same level as Atlantic salmon, whilst sea trout retained their lice. These results demonstrate differences in interactions with L. salmonis amongst these species, and highlight the vulnerability of sea trout to infestation.

scholarly journals Tetracapsuloides bryosalmonae abundance in river water

2017 ◽  
Vol 124 (2) ◽  
pp. 145-157 ◽  
Author(s):  
I Fontes ◽  
H Hartikainen ◽  
JW Holland ◽  
CJ Secombes ◽  
B Okamura
Keyword(s):  
River Water ◽  
Tetracapsuloides Bryosalmonae

scholarly journals A chromosome-anchored genome assembly for Lake Trout (Salvelinus namaycush)

2021 ◽  
Author(s):  
Seth Smith ◽  
Eric Normandeau ◽  
Haig Djambazian ◽  
Pubudu Nawarathna ◽  
Pierre Berube ◽  
...  
Keyword(s):  
Genome Assembly ◽  
Lake Trout ◽  
Single Copy ◽  
Salvelinus Namaycush ◽  
Genomic Research ◽  
Total Size ◽  
Salmonid Species ◽  
Long Read ◽  
Potential Applications ◽  
Conservation Concern

Here we present an annotated, chromosome-anchored, genome assembly for Lake Trout (Salvelinus namaycush) – a highly diverse salmonid species of notable conservation concern and an excellent model for research on adaptation and speciation. We leveraged Pacific Biosciences long-read sequencing, paired-end Illumina sequencing, proximity ligation (Hi-C), and a previously published linkage map to produce a highly contiguous assembly composed of 7,378 contigs (contig N50 = 1.8 mb) assigned to 4,120 scaffolds (scaffold N50 = 44.975 mb). 84.7% of the genome was assigned to 42 chromosome-sized scaffolds and 93.2% of Benchmarking Universal Single Copy Orthologs were recovered, putting this assembly on par with the best currently available salmonid genomes. Estimates of genome size based on k-mer frequency analysis were highly similar to the total size of the finished genome, suggesting that the entirety of the genome was recovered. A mitome assembly was also produced. Self-vs-self synteny analysis allowed us to identify homeologs resulting from the Salmonid specific autotetraploid event (Ss4R) and alignment with three other salmonid species allowed us to identify homologous chromosomes in other species. We also generated multiple resources useful for future genomic research on Lake Trout including a repeat library and a sex averaged recombination map. A novel RNA sequencing dataset was also used to produce a publicly available set of gene annotations using the National Center for Biotechnology Information Eukaryotic Genome Annotation Pipeline. Potential applications of these resources to population genetics and the conservation of native populations are discussed.

scholarly journals Efficient genome editing in multiple salmonid cell lines using ribonucleoprotein complexes

2020 ◽  
Author(s):  
Remi L. Gratacap ◽  
Ye Hwa Jin ◽  
Marina Mantsopoulou ◽  
Ross D. Houston
Keyword(s):  
Rainbow Trout ◽  
Atlantic Salmon ◽  
Infectious Diseases ◽  
Genome Editing ◽  
Cell Lines ◽  
Chinook Salmon ◽  
Model Systems ◽  
Fish Cell ◽  
Ribonucleoprotein Complexes ◽  
Salmonid Species

AbstractInfectious and parasitic diseases have major negative economic and animal welfare impacts on aquaculture of salmonid species. Improved knowledge of the functional basis of host response and genetic resistance to these diseases is key to developing preventative and treatment options. Cell lines provide a valuable model to study infectious diseases in salmonids, and genome editing using CRISPR provides an exciting avenue to evaluate the function of specific genes in those systems. While CRISPR/Cas9 has been successfully performed in a Chinook salmon cell line (CHSE-214), there are no reports to date of editing of cell lines derived from the most commercially relevant salmonid species Atlantic salmon and rainbow trout, which are difficult to transduce and therefore edit using lentivirus-mediated methods. In the current study, a method of genome editing of salmonid cell lines using ribonucleoprotein (RNP) complexes was optimised and tested in the most commonly-used salmonid fish cell lines; Atlantic salmon (SHK-1 and ASK cell lines), rainbow trout (RTG-2) and Chinook salmon (CHSE-214). Electroporation of RNP based on either Cas9 or Cas12a was efficient at targeted editing of all the tested lines (typically > 90 % cells edited), and the choice of enzyme expands the number of potential target sites for editing within the genomes of these species. These optimised protocols will facilitate functional genetic studies in salmonid cell lines, which are widely used as model systems for infectious diseases in aquaculture.

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