Comparison of gene flow estimates between species of darters in different streams

Faber, Joseph E.; White, Matthew M.

doi:10.1111/j.1095-8649.2000.tb02225.x

Cited by 11 publications

(8 citation statements)

References 43 publications

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“…Tributary-related levels of variation are reported for Etheostoma flabellare (Faber & White, 2000), and in Salmo trutta, microsatellite variation seems related to waterfalls and tributaries (Carlsson et al, 1999). In continental species of fish, isoenzyme variation in tributaries is apparently responsible for 22.2% (Ward et al, 1994) to 32.8% (Gyllensten, 1985) of total genetic variation.…”

Section: Discussionmentioning

confidence: 90%

Determining Management Units in Southeastern Brazil: The Case of Astyanax bimaculatus (Linnaeus, 1758) (Teleostei: Ostariophysi: Characidae)

2006

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Characterization, management and protection of biodiversity are the most prominent challenges in conservation biology. Analyses on molecular similarity (Random Amplified Polymorphic DNA-Polymerase Chain Reaction, RAPD-PCR) and morphologic patterns (morphometric and meristic characters) were performed to evaluate the existence of population structuring in the Doce river basin, in a widespread small-sized characin, Astyanax bimaculatus. Three hundred (300) individuals were collected from six locations isolated by waterfalls or dams, in the Doce river basin, Minas Gerais State, Brazil. Genetic differentiation among tributaries was significant (p<0.00001) and accounted for 21% of total variance (p<0.00001). Only the Grande waterfall of the Casca river was an effective factor for differentiation of populations (p<0.00001), and meristic characters were also consistent with molecular data. We concluded that genetic and morphologic variation of this species was not necessarily associated with waterfalls and that molecular and meristic data are effective predictors of population divergence in this basin. The consequences of these findings for the protection and management of aquatic biodiversity were discussed.

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Section: Discussionmentioning

confidence: 90%

Determining Management Units in Southeastern Brazil: The Case of Astyanax bimaculatus (Linnaeus, 1758) (Teleostei: Ostariophysi: Characidae)

2006

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“…Greater genetic divergence of the Blanchard River sample in western Lake Erie from tributaries in the central basin (Chagrin, Cuyahoga and Grand Rivers) reflects their general geographic distances. The Blanchard River sample shares some mtDNA haplotypes with the other Lake Erie tributaries, but because the E. caeruleum has limited dispersal capabilities (Paine, 1984; Faber & White, 2001), this probably represents a common glacial refugium ancestry. The star pattern observed in the haplotype networks and mismatch distribution analyses suggests that haplotypes underwent rapid genetic radiation during the glacial–interglacial cycles.…”

Section: Discussionmentioning

confidence: 99%

Landscape genetic patterns of the rainbow darterEtheostoma caeruleum: a catchment analysis of mitochondrial DNA sequences and nuclear microsatellites

Haponski

Bollin

Jedlicka

et al. 2009

Journal of Fish Biology

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Catchment population structure and divergence patterns of the rainbow darter Etheostoma caeruleum (Percidae: Teleostei), an eastern North American benthic fish, are tested using a landscape genetics approach. Allelic variation at eight nuclear DNA microsatellite loci and two mitochondrial DNA regions [cytochrome (cyt) b gene and control region; 2056 aligned base pairs (bp)] is analysed from 89 individuals and six sites in the Lake Erie catchment (Blanchard, Chagrin, Cuyahoga and Grand Rivers) v. the Ohio River catchment (Big Darby Creek and Little Miami River). Genetic and geographic patterning is assessed using phylogenetic trees, pair-wise F(ST) analogues, AMOVA partitioning, Mantel regression, Bayesian assignment, 3D factorial correspondence and barrier analyses. Results identify 34 cyt b haplotypes, 22 control region haplotypes and 137 microsatellite alleles whose distributions demonstrate marked genetic divergence between populations from the Lake Erie and Ohio River catchments. Etheostoma caeruleum populations in the Lake Erie and Ohio River catchments diverged c. 1.6 mya during the Pleistocene glaciations. Greater genetic separations characterize the Ohio River populations, reflecting their older habitat age and less recent connectivity. Divergence levels within the Lake Erie catchment denote more recent post-glacial origins. Notably, the western Lake Erie Blanchard River population markedly differs from the three central basin tributary samples, which are each genetically distinguishable using microsatellites. Overall relationships among the Lake Erie sites refute a genetic isolation by geographic distance hypothesis. Etheostoma caeruleum populations thus exchange few genes and have low migration among tributaries and catchments.

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“…Previous studies based on allozyme electrophoresis and mtDNA sequences on populations of Greenside Darter in the United States showed that gene flow varies among regions studied (Heithaus and Laushman 1997;Turner and Trexler 1998). Faber and White (2000) found no significant divergence between populations in two unconnected Ohio River tributaries, whereas Turner (2001) found populations within a 66-km study area in the Spring River, Arkansas were significantly divergent.…”

Section: Introductionmentioning

confidence: 87%

The effects of river barriers and range expansion of the population genetic structure and stability in Greenside Darter (Etheostoma blennioides) populations

2008

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The genetic structure of a stream-dwelling fish, the Greenside Darter, Etheostoma blennioides, is described from variation at nine microsatellite loci in 26 populations in the northern-most portions of the species' range in southern Ontario, Canada in two sampling years. We found relatively high levels of genetic structure at the among-and within-watershed scales, with some watersheds and populations exhibiting very high divergence. The Ausable River populations were especially isolated, containing distinct populations of potential conservation concern. Temporal replicates at selected localities showed evidence of substantial temporal variation in genetic structure, perhaps resulting from movement among sites. We found strong evidence for an effect of river barriers (dams and weirs) on dispersal measured by genotype assignment techniques. However, we found no bias in upstream vs downstream dispersal. Significant isolation-by-distance relationships in both sample years indicate that river distance is an important factor regulating gene flow in these watersheds. The Canadian Greenside Darter populations are expanding their range into more northerly watersheds, but also show substantial within-watershed genetic structure despite substantial dispersal.

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Comparison of gene flow estimates between species of darters in different streams

Cited by 11 publications

References 43 publications

Determining Management Units in Southeastern Brazil: The Case of Astyanax bimaculatus (Linnaeus, 1758) (Teleostei: Ostariophysi: Characidae)

Determining Management Units in Southeastern Brazil: The Case of Astyanax bimaculatus (Linnaeus, 1758) (Teleostei: Ostariophysi: Characidae)

Landscape genetic patterns of the rainbow darterEtheostoma caeruleum: a catchment analysis of mitochondrial DNA sequences and nuclear microsatellites

The effects of river barriers and range expansion of the population genetic structure and stability in Greenside Darter (Etheostoma blennioides) populations

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