Microsatellite gene diversity analysis in anadromous arctic char, Salvelinus alpinus, from Labrador, Canada

1998 ◽  
Vol 55 (5) ◽  
pp. 1264-1272 ◽  
Author(s):  
Louis Bernatchez ◽  
J Brian Dempson ◽  
Sylvain Martin
Keyword(s):  
Mitochondrial Dna ◽  
Salvelinus Alpinus ◽  
Gene Diversity ◽  
Arctic Char ◽  
Diversity Analysis ◽  
Fine Scale ◽  
Geographic Scale ◽  
Scale Population ◽  
Population Structuring ◽  
Heterozygous Deficiency

We analysed six loci among 257 Arctic char (Salvelinus alpinus) representing seven locations in Labrador and Newfoundland to provide a first assessment of microsatellites gene diversity in anadromous char and to determine the geographic scale of population structuring within the species. The number of alleles per locus varied between 9 and 48, and gene diversity ranged from 0.190 to 0.968. Significant FST and differences in allele frequencies were observed among most samples, as well as heterozygous deficiency, which was indicative of a Wahlund's effect. These results implied the existence of genetically distinct populations on a microgeographic scale (less than 10 km) and that our samples represented an admixture of char from those populations that interchange among rivers for owerwintering, in congruence with tagging investigations. These results indicate that microsatellites potentially offer more sensitivity than allozymes and mitochondrial DNA to infer fine-scale population structure in anadromous arctic char.

scholarly journals RAD sequencing of common whelk, Buccinum undatum, reveals fine‐scale population structuring in Europe and cryptic speciation within the North Atlantic

2021 ◽  
Vol 11 (6) ◽  
pp. 2616-2629
Author(s):  
Jake Goodall ◽  
Kristen Marie Westfall ◽  
Hildur Magnúsdóttir ◽  
Snæbjörn Pálsson ◽  
Erla Björk Örnólfsdóttir ◽  
...  
Keyword(s):  
North Atlantic ◽  
Cryptic Speciation ◽  
Rad Sequencing ◽  
Fine Scale ◽  
Buccinum Undatum ◽  
The North ◽  
Scale Population ◽  
Population Structuring ◽  
The North Atlantic

Geographic influences on fine-scale, hierarchical population structure in northern Canadian populations of anadromous Arctic Char (Salvelinus alpinus)

2013 ◽  
Vol 97 (11) ◽  
pp. 1233-1252 ◽  
Author(s):  
Les N. Harris ◽  
Jean-Sébastien Moore ◽  
Paul Galpern ◽  
Ross F. Tallman ◽  
Eric B. Taylor
Keyword(s):  
Population Structure ◽  
Salvelinus Alpinus ◽  
Arctic Char ◽  
Fine Scale

Microsatellite Gene Diversity Analysis in Landlocked Arctic Char from Maine

2002 ◽  
Vol 131 (6) ◽  
pp. 1106-1118 ◽  
Author(s):  
Louis Bernatchez ◽  
James G. Rhydderch ◽  
Frederick W. Kircheis
Keyword(s):  
Gene Diversity ◽  
Arctic Char ◽  
Diversity Analysis

Mitochondrial DNA and Conservation of an Aboriginal Arctic Char (Salvelinus alpinus oquassa) from Floods Pond, Maine

1994 ◽  
Vol 51 (1) ◽  
pp. 62-67 ◽  
Author(s):  
Irv Kornfield ◽  
Frederick W. Kircheis
Keyword(s):  
Mitochondrial Dna ◽  
New England ◽  
Lake Trout ◽  
Salvelinus Alpinus ◽  
Restriction Endonuclease Analysis ◽  
Arctic Char ◽  
Eastern Canada ◽  
Fish Samples ◽  
Endemic Population ◽  
Distinct Lineage

Periods of low water in Floods Pond, Maine, USA, during spawning seasons for an endemic population of landlocked Arctic char, Salvelinus alpinus oquassa, have contributed to several year-class failures. To determine the genetic uniqueness of these fish, samples of Arctic char from five isolated lakes in New England and eastern Canada were examined by restriction endonuclease analysis of mitochondrial DNA (mtDNA) and compared with samples of lake trout (Salvelinus namaycush) and Arctic char from Scandinavia. Results suggest that (1) Arctic char of eastern North America should all be considered members of Salvelinus alpinus oquassa, (2) char from Floods Pond possess a unique mtDNA banding pattern for one restriction enzyme not observed in fish from any other sampled locality (this difference delineates a distinct lineage of Arctic char whose preservation is warranted on genetic grounds), and (3) unique banding patterns did not characterize any other studied char population, including geographic variants (these populations may be viewed as genetically homogeneous, and none warrant individual protection based upon our genetic characterizations). We contend that genetically identified lineages in the early stages of divergence warrant preservation.

scholarly journals Evidence of Recent Fine-Scale Population Structuring in South American Puma concolor

Diversity ◽  
2017 ◽  
Vol 9 (4) ◽  
pp. 44 ◽  
Author(s):  
Bruno Saranholi ◽  
Karla Chávez-Congrains ◽  
Pedro Galetti
Keyword(s):  
Puma Concolor ◽  
South American ◽  
Fine Scale ◽  
Scale Population ◽  
Population Structuring

First confirmation of salmonid alphavirus infection in Arctic char Salvelinus alpinus and in Austria

2018 ◽  
Vol 130 (1) ◽  
pp. 71-76
Author(s):  
E Lewisch ◽  
T Frank ◽  
H Soliman ◽  
O Schachner ◽  
A Friedl ◽  
...  
Keyword(s):  
Salvelinus Alpinus ◽  
Arctic Char ◽  
Alphavirus Infection

Genome-Wide Single Nucleotide Polymorphisms are Robust in Resolving Fine-Scale Population Genetic Structure of the Small Brown Planthopper, Laodelphax striatellus (Fallén) (Hemiptera: Delphacidae)

2019 ◽  
Vol 112 (5) ◽  
pp. 2362-2368
Author(s):  
Yan Liu ◽  
Lei Chen ◽  
Xing-Zhi Duan ◽  
Dian-Shu Zhao ◽  
Jing-Tao Sun ◽  
...  
Keyword(s):  
Population Structure ◽  
Discriminant Analysis ◽  
Genetic Structure ◽  
Population Genetic ◽  
Brown Planthopper ◽  
Fine Scale ◽  
Nucleotide Polymorphisms ◽  
Single Nucleotide ◽  
Small Brown Planthopper ◽  
Scale Population

Abstract Deciphering genetic structure and inferring migration routes of insects with high migratory ability have been challenging, due to weak genetic differentiation and limited resolution offered by traditional genotyping methods. Here, we tested the ability of double digest restriction-site associated DNA sequencing (ddRADseq)-based single nucleotide polymorphisms (SNPs) in revealing the population structure relative to 13 microsatellite markers by using four small brown planthopper populations as subjects. Using ddRADseq, we identified 230,000 RAD loci and 5,535 SNP sites, which were present in at least 80% of individuals across the four populations with a minimum sequencing depth of 10. Our results show that this large SNP panel is more powerful than traditional microsatellite markers in revealing fine-scale population structure among the small brown planthopper populations. In contrast to the mixed population structure suggested by microsatellites, discriminant analysis of principal components (DAPC) of the SNP dataset clearly separated the individuals into four geographic populations. Our results also suggest the DAPC analysis is more powerful than the principal component analysis (PCA) in resolving population genetic structure of high migratory taxa, probably due to the advantages of DAPC in using more genetic variation and the discriminant analysis function. Together, these results point to ddRADseq being a promising approach for population genetic and migration studies of small brown planthopper.

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