Phylogeography, Population Structure, and Historical Demography of Black Drum in North America

2021 ◽  
Author(s):  
Damon Williford ◽  
Joel Anderson ◽  
William Karel ◽  
Zachary Olsen
Keyword(s):  
Population Structure ◽  
North America ◽  
Historical Demography

Multilocus phylogeography and population structure of common eiders breeding in North America and Scandinavia

2011 ◽  
Vol 38 (7) ◽  
pp. 1368-1380 ◽  
Author(s):  
Sarah A. Sonsthagen ◽  
Sandra L. Talbot ◽  
Kim T. Scribner ◽  
Kevin G. McCracken
Keyword(s):  
Population Structure ◽  
North America ◽  
Common Eiders

scholarly journals Evolution and Population Structure of Salmonella enterica Serovar Newport

2010 ◽  
Vol 192 (24) ◽  
pp. 6465-6476 ◽  
Author(s):  
Vartul Sangal ◽  
Heather Harbottle ◽  
Camila J. Mazzoni ◽  
Reiner Helmuth ◽  
Beatriz Guerra ◽  
...  
Keyword(s):  
Population Structure ◽  
North America ◽  
Salmonella Enterica ◽  
Health Concern ◽  
Global Public Health ◽  
Multiple Sequence ◽  
Monophyletic Lineage ◽  
Population Structures ◽  
Paratyphi B ◽  
Multiple Drugs

ABSTRACT Salmonellosis caused by Salmonella enterica serovar Newport is a major global public health concern, particularly because S. Newport isolates that are resistant to multiple drugs (MDR), including third-generation cephalosporins (MDR-AmpC phenotype), have been commonly isolated from food animals. We analyzed 384 S. Newport isolates from various sources by a multilocus sequence typing (MLST) scheme to study the evolution and population structure of the serovar. These were compared to the population structure of S. enterica serovars Enteritidis, Kentucky, Paratyphi B, and Typhimurium. Our S. Newport collection fell into three lineages, Newport-I, Newport-II, and Newport-III, each of which contained multiple sequence types (STs). Newport-I has only a few STs, unlike Newport-II or Newport-III, and has possibly emerged recently. Newport-I is more prevalent among humans in Europe than in North America, whereas Newport-II is preferentially associated with animals. Two STs of Newport-II encompassed all MDR-AmpC isolates, suggesting recent global spread after the acquisition of the bla CMY-2 gene. In contrast, most Newport-III isolates were from humans in North America and were pansusceptible to antibiotics. Newport was intermediate in population structure to the other serovars, which varied from a single monophyletic lineage in S. Enteritidis or S. Typhimurium to four discrete lineages within S. Paratyphi B. Both mutation and homologous recombination are responsible for diversification within each of these lineages, but the relative frequencies differed with the lineage. We conclude that serovars of S. enterica provide a variety of different population structures.

scholarly journals Genetic diversity, population structure, and effective population size in two yellow bat species in south Texas

PeerJ ◽  
2020 ◽  
Vol 8 ◽  
pp. e10348
Author(s):  
Austin S. Chipps ◽  
Amanda M. Hale ◽  
Sara P. Weaver ◽  
Dean A. Williams
Keyword(s):  
Genetic Diversity ◽  
Population Structure ◽  
North America ◽  
Wind Energy ◽  
Population Size ◽  
Effective Population Size ◽  
Microsatellite Loci ◽  
South Texas ◽  
Population Substructure ◽  
Effective Population

There are increasing concerns regarding bat mortality at wind energy facilities, especially as installed capacity continues to grow. In North America, wind energy development has recently expanded into the Lower Rio Grande Valley in south Texas where bat species had not previously been exposed to wind turbines. Our study sought to characterize genetic diversity, population structure, and effective population size in Dasypterus ega and D. intermedius, two tree-roosting yellow bats native to this region and for which little is known about their population biology and seasonal movements. There was no evidence of population substructure in either species. Genetic diversity at mitochondrial and microsatellite loci was lower in these yellow bat taxa than in previously studied migratory tree bat species in North America, which may be due to the non-migratory nature of these species at our study site, the fact that our study site is located at a geographic range end for both taxa, and possibly weak ascertainment bias at microsatellite loci. Historical effective population size (NEF) was large for both species, while current estimates of Ne had upper 95% confidence limits that encompassed infinity. We found evidence of strong mitochondrial differentiation between the two putative subspecies of D. intermedius (D. i. floridanus and D. i. intermedius) which are sympatric in this region of Texas, yet little differentiation using microsatellite loci. We suggest this pattern is due to secondary contact and hybridization and possibly incomplete lineage sorting at microsatellite loci. We also found evidence of some hybridization between D. ega and D. intermedius in this region of Texas. We recommend that our data serve as a starting point for the long-term genetic monitoring of these species in order to better understand the impacts of wind-related mortality on these populations over time.

scholarly journals Tracking invasions of a destructive defoliator, the gypsy moth (Erebidae: Lymantria dispar ): Population structure, origin of intercepted specimens, and Asian introgression into North America

2020 ◽  
Vol 13 (8) ◽  
pp. 2056-2070
Author(s):  
Yunke Wu ◽  
Steven M. Bogdanowicz ◽  
Jose A. Andres ◽  
Kendra A. Vieira ◽  
Baode Wang ◽  
...  
Keyword(s):  
Population Structure ◽  
North America ◽  
Gypsy Moth ◽  
Lymantria Dispar

Origin, genetic diversity, and population structure of Nectria coccinea var. faginata in North America

Mycologia ◽  
1999 ◽  
Vol 91 (4) ◽  
pp. 583-592 ◽  
Author(s):  
Eileen M. Mahoney ◽  
Michael G. Milgroom ◽  
Wayne A. Sinclair ◽  
David R. Houston
Keyword(s):  
Genetic Diversity ◽  
Population Structure ◽  
North America

Environmental extremes drive population structure at the northern range limit of Atlantic salmon in North America

2018 ◽  
Vol 27 (20) ◽  
pp. 4026-4040 ◽  
Author(s):  
Emma V. A. Sylvester ◽  
Robert G. Beiko ◽  
Paul Bentzen ◽  
Ian Paterson ◽  
John B. Horne ◽  
...  
Keyword(s):  
Population Structure ◽  
North America ◽  
Atlantic Salmon ◽  
Range Limit ◽  
Environmental Extremes ◽  
Northern Range Limit

scholarly journals First Records of the Northern Long-eared Bat, Myotis septentrionalis, in the Yukon Territory

2006 ◽  
Vol 120 (1) ◽  
pp. 39 ◽  
Author(s):  
Thomas S. Jung ◽  
Brian G. Slough ◽  
David W. Nagorsen ◽  
Tanya A. Dewey ◽  
Todd Powell
Keyword(s):  
Population Structure ◽  
North America ◽  
Adult Male ◽  
Yukon Territory ◽  
River Valley ◽  
Myotis Septentrionalis ◽  
Northwestern North America

Three adult male Northern Long-eared Bats, Myotis septentrionalis, were captured in mist nets in July 2004 in the LaBiche River Valley, southeastern Yukon. These are the first records of M. septentrionalis in the Yukon. Further survey work is needed to delineate the extent of the range and population structure of this and other species of bats in northwestern North America.

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