Microsatellite polymorphism and the population structure of Atlantic cod (<i>Gadus morhua</i>) in the northwest Atlantic

Bentzen, Paul; Taggart, Christopher T.; Ruzzante, Daniel E.; Cook, Doug

doi:10.1139/f96-238

Cited by 187 publications

(197 citation statements)

References 20 publications

Supporting

Mentioning

164

Contrasting

Order By: Relevance

“…The homogeneity among the NE Atlantic collections and all the NW Atlantic collections reported by Grant (1984) may be attributable to balancing selection (at least for some of the allozyme loci; e.g., Pogson et al 1995) or the lack of divergence through drift due to the time interval of separation. When the NW Atlantic collections in this study were pooled, the differentiation between NE and NW Atlantic herring was twice as great as that detected between NE and NW Atlantic cod Gadus morhua (Bentzen et al 1996) based on dinucleotide microsatellite markers. It has been suggested (e.g., Carr and Crutcher 1998) that F ST results derived from microsatellite markers underestimate the degree of trans-Atlantic differentiation due to homoplasy.…”

Section: Discussionmentioning

confidence: 66%

Genetic Differentiation, Temporal Stability, and the Absence of Isolation by Distance among Atlantic Herring Populations

McPherson

O’Reilly

Taggart

2004

Transactions of the American Fisheries Society

View full text Add to dashboard Cite

Abstract.-The genetic variation among 17 spawning groups of Atlantic herring Clupea harengus was assessed at several temporal and spatial scales using nine tetranucleotide microsatellites. PanAtlantic samples were drawn from the Scotian Shelf, the Celtic Sea, the Baltic Sea, and coastal Iceland. Significant differentiation was observed between northeastern and northwestern Atlantic herring (F ST ϳ 0.065) and among northwestern Atlantic spawning groups (max F ST ϭ 0.014) at the spatial scale of the Scotian Shelf. Geographic distance among Scotian Shelf collections did not explain the pattern of genetic differentiation observed (e.g., lack of isolation by distance). The temporal proximity of collections (as measured by days between collections) explained 30% of the pairwise population differentiation (P ϭ 0.0025). Allele frequencies of replicate samples and year-class analyses demonstrate temporal stability at four locations.

show abstract

Section: Discussionmentioning

confidence: 66%

Genetic Differentiation, Temporal Stability, and the Absence of Isolation by Distance among Atlantic Herring Populations

McPherson

O’Reilly

Taggart

2004

Transactions of the American Fisheries Society

View full text Add to dashboard Cite

show abstract

“…With the same set of markers, Bentzen et al. (1996) found heterogeneity between Labrador (North) and Grand Banks (South) samples, and also suggested that the Flemish Cap and Scotian Shelf populations were significantly differentiated. Hardie et al.…”

Section: Discussionmentioning

confidence: 98%

“…Extensive mtDNA analyses have found little or no structure in waters off the coasts of eastern North America (Carr, Snellen, Howse, & Wroblewski, 1995), Iceland (Árnason, Pálsson, & Arason, 1992; Árnason, Petersen, Kristinsson, Sigurgíslason, & Pálsson, 2000), the Faroe Islands (Sigurgíslason & Árnason, 2003), Norway (Árnason & Pálsson, 1996), and the Baltic Sea (Árnason, Petersen, & Pálsson, 1998). In contrast, microsatellite studies suggest range‐wide isolation by distance (O'Leary, Coughlan, Dillane, McCarthy, & Cross, 2007), and significant structure in waters off North America (e.g., Flemish cap, Bentzen, Taggart, Ruzzante, & Cook, 1996; inshore vs. offshore, Ruzzante, Taggart, Cook, & Goddard, 1996; Arctic populations, Hardie, Gillett, & Hutchings, 2006), Norway (Knutsen, Jorde, André, & Stenseth, 2003), and the North Sea (Hutchinson, Carvalho, & Rogers, 2001). Furthermore, genome scans of nuclear SNP markers have suggested the presence of local adaptation and temperature gradients at both large and small scales (Árnason & Halldórsdóttir, 2015; Berg et al., 2016; Bradbury et al., 2010, 2013; Nielsen et al., 2009).…”

Section: Introductionmentioning

confidence: 99%

Phylogeographic mitogenomics of Atlantic codGadus morhua: Variation in and among trans‐Atlantic, trans‐Laurentian, Northern cod, and landlocked fjord populations

Lait

Marshall

Carr

2018

Ecology and Evolution

View full text Add to dashboard Cite

The historical phylogeography, biogeography, and ecology of Atlantic cod (Gadus morhua) have been impacted by cyclic Pleistocene glaciations, where drops in sea temperatures led to sequestering of water in ice sheets, emergence of continental shelves, and changes to ocean currents. High‐resolution, whole‐genome mitogenomic phylogeography can help to elucidate this history. We identified eight major haplogroups among 153 fish from 14 populations by Bayesian, parsimony, and distance methods, including one that extends the species coalescent back to ca. 330 kya. Fish from the Barents and Baltic Seas tend to occur in basal haplogroups versus more recent distribution of fish in the Northwest Atlantic. There was significant differentiation in the majority of trans‐Atlantic comparisons (ΦST = .029–.180), but little or none in pairwise comparisons within the Northwest Atlantic of individual populations (ΦST = .000–.060) or defined management stocks (ΦST = .000–.023). Monte Carlo randomization tests of population phylogeography showed significantly nonrandom trans‐Atlantic phylogeography versus absence of such structure within various partitions of trans‐Laurentian, Northern cod (NAFO 2J3KL) and other management stocks, and Flemish Cap populations. A landlocked meromictic fjord on Baffin Island comprised multiple identical or near‐identical mitogenomes in two major polyphyletic clades, and was significantly differentiated from all other populations (ΦST = .153–.340). The phylogeography supports a hypothesis of an eastern origin of genetic diversity ca. 200–250 kya, rapid expansion of a western superhaplogroup comprising four haplogroups ca. 150 kya, and recent postglacial founder populations.

show abstract

“…Sequencing of DNA extracted from these colonies gave rise to 29 se quences (from 24 positive clones) with repeat units of di meric (25), trimeric (3) or tetrameric (1). The C. macro cephalus microsatellite found in this study were 26 perfect repeats (89.66%), three imperfect repeats (10 .34%) no Band patterns of Cma-1 *, Cma-2*, Cma-3* and Cma-4*.…”

Section: Design Of Primer For Microsatellite Locimentioning

confidence: 99%

Isolation and Characterization of Microsatellite Loci of <i>Clarias macrocephalus</i> and Their Application to Genetic Diversity Study

et al. 1999

View full text Add to dashboard Cite

Four microsatellite loci were identified for Clarias macrocephalus and the forward and reverse primers for each locus were designed according to their unique flanking regions. One locus, Cma-1 *, was monomorphic, three loci, Cma-2*, Cma-3 * and Cma-4*, were polymorphic having 5, 14 and 30 al leles per locus respectively. The polymorphic microsatellite loci were studied in four natural populations of C. macrocephalus collected from different locations in Thailand. Mean number of alleles per locus were 8.0, 8.7, 6.0 and 10.0, respective to populations from Pattani, Pattalung, Chiangrai and Prachin buri. Mean heterozygosities were 0.744, 0.765, 0.718 and 0.810 respectively. Nei's genetic distance showed the closest relationship between Pattalung and Prachinburi (0.230) and the largest genetic dis tance between Pattalung and Chiangrai (0.535). However, the genetic distances obtained in this study were not accorded with geographic distance.

show abstract

Microsatellite polymorphism and the population structure of Atlantic cod (Gadus morhua) in the northwest Atlantic

Cited by 187 publications

References 20 publications

Genetic Differentiation, Temporal Stability, and the Absence of Isolation by Distance among Atlantic Herring Populations

Genetic Differentiation, Temporal Stability, and the Absence of Isolation by Distance among Atlantic Herring Populations

Phylogeographic mitogenomics of Atlantic codGadus morhua: Variation in and among trans‐Atlantic, trans‐Laurentian, Northern cod, and landlocked fjord populations

Isolation and Characterization of Microsatellite Loci of <i>Clarias macrocephalus</i> and Their Application to Genetic Diversity Study

Contact Info

Product

Resources

About