Site fidelity and shallow genetic structure in the common smooth‐hound shark Mustelus mustelus confirmed by tag‐recapture and genetic data

2021 ◽  
Author(s):  
Juliana D. Klein ◽  
Tamaryn A. Asbury ◽  
Charlene da Silva ◽  
Kelvin L. Hull ◽  
Matthew L. Dicken ◽  
...  
Keyword(s):  
Genetic Structure ◽  
Site Fidelity ◽  
Genetic Data ◽  
The Common

scholarly journals Genetic structure and biogeographic history of the Bicknell’s Thrush/ Gray-cheeked Thrush species complex

The Auk ◽  
2019 ◽  
Vol 137 (1) ◽  
Author(s):  
Alyssa M Fitzgerald ◽  
Jason Weir ◽  
Joel Ralston ◽  
Ian G Warkentin ◽  
Darroch M Whitaker ◽  
...  
Keyword(s):  
Genetic Structure ◽  
Late Pleistocene ◽  
Species Complex ◽  
Extended Period ◽  
Genetic Data ◽  
Distribution Models ◽  
Biogeographic History ◽  
History Of ◽  
Low Levels ◽  
Bicknell's Thrush

Abstract We examined species limits, admixture, and genetic structure among populations in the Bicknell’s Thrush (Catharus bicknelli)–Gray-cheeked Thrush (C. minimus) species complex to establish the geographic and temporal context of speciation in this group, which is a model system in ecology and a high conservation priority. We obtained mitochondrial ND2 sequences from 186 Bicknell’s Thrushes, 77 Gray-cheeked Thrushes, and 55 individuals of their closest relative, the Veery (C. fuscescens), and genotyped a subset of individuals (n = 72) at 5,633 anonymous single nucleotide polymorphic (SNP) loci. Between-species sequence divergence was an order of magnitude greater than divergence within each species, divergence was dated to the late Pleistocene (420 kbp) based on Bayesian coalescence estimation, and a coalescent model (IMa) revealed almost no gene flow between species based on ND2. SNP data were consistent with mitochondrial results and revealed low levels of admixture among species (3 of 37 Bicknell’s Thrushes, no Gray-cheeked Thrushes, and no Veeries were >2% admixed). Species distribution models projected to the Last Glacial Maximum suggest that Bicknell’s Thrush and Gray-cheeked Thrush resided in primarily allopatric refugia in the late Pleistocene, consistent with the genetic data that support reproductive isolation over an extended period of time. Our genetic data suggest that both species underwent demographic expansions, possibly as they expanded out of Pleistocene refugia into their current ranges. We conclude that Bicknell’s Thrush and Gray-cheeked Thrush are 2 distinct species-level lineages despite low levels of Gray-cheeked Thrush introgression in Bicknell’s Thrushes, and divergence has been maintained by a long history of allopatry in subtly different habitats. Their unique phylogeography among boreal forest birds indicates that either cryptic species breaks in eastern North America are still undiscovered, or another factor, such as divergent natural selection, high migratory connectivity, or interspecific competition, played a role in their divergence.

Electrophoretic evidence for the presence of the undescribed ‘Bellinger’ catfish (Tandanus sp.) (Teleostei : Plotosidae) in four New South Wales mid-northern coastal rivers

1997 ◽  
Vol 48 (3) ◽  
pp. 235 ◽  
Author(s):  
Dean R. Jerry ◽  
David J. Woodland
Keyword(s):  
Population Structure ◽  
New South ◽  
New South Wales ◽  
Genetic Data ◽  
Undescribed Species ◽  
Allopatric Populations ◽  
South Wales ◽  
Coastal Rivers ◽  
Allelic Differences ◽  
The Common

Genetic data were collected from eight allopatric populations of the common freshwater catfish, Tandanus tandanus. Catfish sampled from the New South Wales (NSW) mid-northern coastal rivers of the Bellinger, Macleay, Hastings and Manning exhibited fixed allelic differences from T. tandanus from the type locality (Namoi River) at four enzymatic loci (GPI-1*, EST*, UMB-1* and UMB-2*), suggesting that, collectively, catfish from these four river systems constitute an undescribed species of Tandanus. Catfish from the northern coastal rivers of NSW (Tweed, Richmond and Clarence) displayed a complex pattern of population structure that was not fully resolved by the present study. More work is needed on the complex assemblage of populations of eel-tailed catfish in the eastern coastal drainages of Australia.

scholarly journals Mapping and Genetic Structure Analysis of the Anthracnose Resistance Locus Co-1HY in the Common Bean (Phaseolus vulgaris L.)

PLoS ONE ◽  
2017 ◽  
Vol 12 (1) ◽  
pp. e0169954 ◽  
Author(s):  
Mingli Chen ◽  
Jing Wu ◽  
Lanfen Wang ◽  
Nitin Mantri ◽  
Xiaoyan Zhang ◽  
...  
Keyword(s):  
Genetic Structure ◽  
Phaseolus Vulgaris ◽  
Common Bean ◽  
Structure Analysis ◽  
Resistance Locus ◽  
Phaseolus Vulgaris L ◽  
Anthracnose Resistance ◽  
The Common

GENETIC STRUCTURE AND COLONIZATION PROCESSES IN EUROPEAN POPULATIONS OF THE COMMON VOLE, MICROTUS ARVALIS

Evolution ◽  
2005 ◽  
Vol 59 (10) ◽  
pp. 2231-2242 ◽  
Author(s):  
Gerald Heckel ◽  
Reto Burri ◽  
Sabine Fink ◽  
Jean-François Desmet ◽  
Laurent Excoffier
Keyword(s):  
Genetic Structure ◽  
Common Vole ◽  
Microtus Arvalis ◽  
The Common ◽  
European Populations
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