Journal ArticleDOI
A major sextet of mitochondrial DNA phylogenetic assemblages extant in eastern North American brook trout (Salvelinus fontinalis): distribution and postglacial dispersal patterns
TLDR
Comparisons of mtDNA diversity between fish from putative refugial and recolonization zones for this species indicate that more than one refugia region contributed to northern recolonized regions.Abstract:
Mitochondrial DNA (mtDNA) restriction fragment length polymorphisms (RFLPs) of 2422 brook trout (Salvelinus fontinalis) from 60 units (major drainages, small stream catchments, and isolated lakes) representing 155 populations in eastern North America were examined to test hypotheses regarding postglacial dispersal and recolonization. An analysis of molecular variance (AMOVA) indicated that 38.8% of the variation was partitioned among the units, while approximately 60% was distributed among populations (phiST = 59.3) compared with 40.7% within populations. This distribution of variation suggests a large degree of heterogeneity in population founding events and phylogeographic structuring in this species. Comparisons of mtDNA diversity between fish from putative refugial and recolonization zones for this species indicate that more than one refugial region contributed to northern recolonization. Haplotypic diversities in recolonized regions are greatest in south-central populations (i.e., southern Great Lake...read more
Citations
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Journal ArticleDOI
Landscape structure and hierarchical genetic diversity in the brook charr, Salvelinus fontinalis.
TL;DR: Evidence is provided for the role of contemporary landscape features in shaping the observed pattern of genetic diversity at smaller geographic scales (within and among populations within river drainage) and for the increasing evidence for nonequilibrium conditions between drift and migration in a wide array of animal taxa.
Journal ArticleDOI
Consequences of unequal population size, asymmetric gene flow and sex‐biased dispersal on population structure in brook charr (Salvelinus fontinalis)
TL;DR: The results demonstrate how dispersal and population structure may interrelate to produce spatial variation in intraspecific diversity, and are therefore relevant for conservation programmes seeking to define conservation units or predict recolonization rates of extirpated populations.
Journal ArticleDOI
The Rise and Fall of Isolation by Distance in the Anadromous Brook Charr (Salvelinus fontinalis Mitchill)
Vincent Castric,Louis Bernatchez +1 more
TL;DR: It is demonstrated that changes in a species' geographic range and dispersal capabilities may contribute to shaping geographic patterns of genetic diversity.
Journal ArticleDOI
A Comparative Mitogenomic Analysis of the Potential Adaptive Value of Arctic Charr mtDNA Introgression in Brook Charr Populations (Salvelinus fontinalis Mitchill)
TL;DR: A comparative sequence analysis of the whole mitochondrial genome of both brook and arctic charr to identify the distribution of mutational differences across these two genomes supported the hypothesis of selective constraints acting on synonymous codon usage.
Journal ArticleDOI
A paradox of trout invasions in North America
TL;DR: This paper argues that an interaction among zoogeography, evolutionary history, and environmental resistance from the natural flow regimes can account for invasions by two trout species outside their native ranges in North America.
References
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Journal ArticleDOI
The neighbor-joining method: a new method for reconstructing phylogenetic trees.
Naruya Saitou,Masatoshi Nei +1 more
TL;DR: The neighbor-joining method and Sattath and Tversky's method are shown to be generally better than the other methods for reconstructing phylogenetic trees from evolutionary distance data.
Journal ArticleDOI
Analysis of molecular variance inferred from metric distances among DNA haplotypes: application to human mitochondrial DNA restriction data.
TL;DR: In this article, a framework for the study of molecular variation within a single species is presented, where information on DNA haplotype divergence is incorporated into an analysis of variance format, derived from a matrix of squared-distances among all pairs of haplotypes.
Journal Article
Analysis of molecular variance inferred from metric distances among DNA haplotypes: application to human mitochondrial DNA restriction data.
Journal ArticleDOI
Intraspecific Phylogeography: The Mitochondrial DNA Bridge Between Population Genetics and Systematics
John C. Avise,Jonathan Arnold,R M Ball,Eldredge Bermingham,Trip Lamb,Joseph E. Neigel,Carol A. Reeb,Nancy C. Saunders +7 more
TL;DR: This poster presents a probabilistic procedure to characterize the response of the immune system to E.coli bacteria and shows clear patterns in response to the presence of E. coli.
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