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You searched for: Subject "genetic drift" Remove constraint Subject: "genetic drift"
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1. One of these wolves is not like the other: morphological effects and conservation implications of captivity in Mexican wolves

Author:
L. Siciliano‐Martina; J. E. Light; D. G. Riley; A. M. Lawing
Source:
Animal conservation 2022 v.25 no.1 pp. 77-90
ISSN:
1367-9430
Subject:
genetic drift,   etc   ; Canis lupus; captive animals; endangered species; morphs; skull;     Show all 6 Subjects
Abstract:
... Maintaining animal populations in captivity can be a useful way to conserve species, especially those that are extinct in the wild or endangered in their native habitats. These animals could be reintroduced into the wild from captivity if conditions improve. However, captive populations of endangered species are often established with few wild‐caught individuals and are maintained in novel habitat ...
DOI:
10.1111/acv.12724

2. Determinants of Virus Variation, Evolution, and Host Adaptation

Author:
Katherine LaTourrette; Hernan Garcia-Ruiz
Source:
Pathogens 2022 v.11 no.9 pp. -
ISSN:
2076-0817
Subject:
genetic drift,   etc   ; evolution; genetic variation; hosts; mutation; viral genome; viruses;     Show all 7 Subjects
Abstract:
... Virus evolution is the change in the genetic structure of a viral population over time and results in the emergence of new viral variants, strains, and species with novel biological properties, including adaptation to new hosts. There are host, vector, environmental, and viral factors that contribute to virus evolution. To achieve or fine tune compatibility and successfully establish infection, vi ...
DOI:
10.3390/pathogens11091039

3. A dynamic ancestral graph model and GPU‐based simulation of a community based on metagenomic sampling

Author:
Cortland K. Griswold
Source:
Molecular ecology resources 2022 v.22 no.6 pp. 2429-2442
ISSN:
1755-098X
Subject:
genetic drift,   etc   ; computer software; ecological communities; loci; metagenomics; models; natural selection; statistics; viability;     Show all 9 Subjects
Abstract:
... In this paper, we present an ancestral graph model of the evolution of a guild in an ecological community. The model is based on a metagenomic sampling design in that a random sample is taken at the community, as opposed the taxon, level and species are discovered by genetic sequencing. The specific implementation of the model envisions an ecological guild that was founded by colonization at some ...
DOI:
10.1111/1755-0998.13613

4. A lizard with two tales: What diversification within Sceloporus occidentalis teaches us about species formation

Author:
Ricardo J. Pereira; Sonal Singhal
Source:
Molecular ecology 2022 v.31 no.2 pp. 407-410
ISSN:
0962-1083
Subject:
genetic drift,   etc   ; Sceloporus occidentalis; ecology; gene flow; genomics; introgression; lizards; reproductive isolation; sympatry;     Show all 9 Subjects
Abstract:
... In 1859, Charles Darwin proposed that species are not fundamentally different from subspecies or the varieties from which they evolve. A century later, Dobzhansky (1958) suggested that many such lineages are ephemeral and are likely to reverse differentiation through introgression (Figure 1a); only a few evolve complete reproductive isolation and persist in sympatry. In this issue of Molecular Eco ...
DOI:
10.1111/mec.16321

5. Detecting Selection in the HIV-1 Genome during Sexual Transmission Events

Author:
David Seifert; Beda Joos; Dominique L. Braun; Corinna S. Oberle; Corinne D. Schenkel; Herbert Kuster; Christina Grube; Jürg Böni; Sabine Yerly; Vincent Aubert; Thomas Klimkait; Huldrych F. Günthard; Niko Beerenwinkel; Karin J. Metzner; on behalf of the Swiss HIV Cohort Study
Source:
Viruses 2022 v.14 no.2 pp. -
ISSN:
1999-4915
Subject:
genetic drift,   etc   ; HIV infections; amino acids; cohort studies; genome; population dynamics; statistical analysis; viruses;     Show all 8 Subjects
Abstract:
... Little is known about whether and how variation in the HIV-1 genome affects its transmissibility. Assessing which genomic features of HIV-1 are under positive or negative selection during transmission is challenging, because very few virus particles are typically transmitted, and random genetic drift can dilute genetic signals in the recipient virus population. We analyzed 30 transmitter–recipient ...
DOI:
10.3390/v14020406

6. The uplift of the Hengduan Mountains contributed to the speciation of three Rhododendron species

Author:
Kailai Wang; Xiao-Hui Zhou; Detuan Liu; Youzhi Li; Zhi Yao; Wei-Ming He; Yongbo Liu
Source:
Global ecology and conservation 2022 v.35 pp. e02085
ISSN:
2351-9894
Subject:
genetic drift,   etc   ; DNA; Rhododendron; biodiversity; climate; effective population size; gene flow; genotyping; indigenous species;     Show all 9 Subjects
Abstract:
... Plant speciation in mountain systems is crucial for shaping plant biodiversity, particularly for those endemic species with small populations. The mountain-geobiodiversity hypothesis (MGH) is among the possible mechanisms underlying mountain biodiversity. To test the MGH, we selected three Rhododendron species occupying the Hengduan Mountains (HDM) as focal species and then genotyped 12 population ...
DOI:
10.1016/j.gecco.2022.e02085

7. Limited evidence for local adaptation to salinity and temperature variability in San Juan Island populations of the copepod Tigriopus californicus (Baker)

Author:
Alyssa Liguori
Source:
Journal of experimental marine biology and ecology 2022 v.554 pp. 151752
ISSN:
0022-0981
Subject:
genetic drift,   etc   ; Tigriopus californicus; crustacean culture; fecundity; hypersalinity; phenotype; phenotypic plasticity; survival rate; temperature;     Show all 9 Subjects
Abstract:
... Local adaptation has been studied in a broad range of taxa for decades. However, we have limited understanding of how often it occurs in variable environments. Whether phenotypic plasticity can evolve in distinct ways among populations experiencing different patterns of abiotic variability is unclear. Abiotic conditions in coastal marine habitats can be highly heterogeneous at small spatial scales ...
DOI:
10.1016/j.jembe.2022.151752

8. Multi-year evidence of unbiased sex ratios in hatchery and wild-reared age-0 lake sturgeon (Acipenser fulvescens)

Author:
Gabrielle E. Sanfilippo; Joseph J. Riedy; Douglas L. Larson; Kim T. Scribner
Source:
Journal of Great Lakes research 2022 v.48 no.5 pp. 1306-1313
ISSN:
0380-1330
Subject:
genetic drift,   etc   ; Acipenser fulvescens; artificial selection; genetic variation; hatcheries; juveniles; mortality; research; species recruitment;     Show all 9 Subjects
Abstract:
... Assessment of population sex ratios allows managers to forecast recruitment dynamics and loss of genetic diversity in natural populations and is important when the focal population is in low abundance and subject to demographic stochasticity. If levels of natural or artificial selection differ for males and females and levels of mortality likewise vary, lower levels of population recruitment, loss ...
DOI:
10.1016/j.jglr.2022.07.004

9. Codon usage bias

Author:
Sujatha Thankeswaran Parvathy; Varatharajalu Udayasuriyan; Vijaipal Bhadana
Source:
Molecular biology reports 2022 v.49 no.1 pp. 539-565
ISSN:
0301-4851
Subject:
genetic drift,   etc   ; codon usage; gene expression; genetic code; molecular biology; mutation; natural selection; phylogeny; transgenes;     Show all 9 Subjects
Abstract:
... Codon usage bias is the preferential or non-random use of synonymous codons, a ubiquitous phenomenon observed in bacteria, plants and animals. Different species have consistent and characteristic codon biases. Codon bias varies not only with species, family or group within kingdom, but also between the genes within an organism. Codon usage bias has evolved through mutation, natural selection, and ...
DOI:
10.1007/s11033-021-06749-4

10. Diverging effects of geographic distance and local habitat quality on the genetic characteristics of three butterfly species

Author:
Christophe Lebigre; Camille Turlure; Hélène Vandewalle; Fabian Binard; Jan Christian Habel; Nicolas Schtickzelle
Source:
Ecological entomology 2022 v.47 no.5 pp. 842-854
ISSN:
0307-6946
Subject:
genetic drift,   etc   ; Lycaena; butterflies; entomology; gene flow; genetic variation; habitat destruction; habitats; population size; sympatry;     Show all 10 Subjects
Abstract:
... The genetic characteristics of neutral loci in natural populations are shaped by the interplay between genetic drift and gene flow that themselves result from key ecological and evolutionary processes. Because of their influence on population size, habitats characteristics may influence substantially populations' genetic characteristics. However, past studies focused primarily on variables related ...
DOI:
10.1111/een.13174

11. Polyploidization as an opportunistic mutation: The role of unreduced gametes formation and genetic drift in polyploid establishment

Author:
Josselin Clo; Nélida Padilla‐García; Filip Kolář
Source:
Journal of evolutionary biology 2022 v.35 no.8 pp. 1099-1109
ISSN:
1010-061X
Subject:
genetic drift,   etc   ; diploidy; frequency dependent selection; genetic instability; quantitative traits; selfing; tetraploidy; theoretical models; triploidy;     Show all 9 Subjects
Abstract:
... It is broadly assumed that polyploidy success reflects an increase in fitness associated with whole‐genome duplication (WGD), due to higher tolerance to stressful conditions. Nevertheless, WGD also arises with several costs in neo‐polyploid lineages, like genomic instability, or cellular mis‐management. In addition to these costs, neo‐polyploid individuals also face frequency dependent selection b ...
DOI:
10.1111/jeb.14055

12. Reduced climate adaptation at range edges in North American Arabidopsis lyrata

Author:
Darío Sánchez‐Castro; Antoine Perrier; Yvonne Willi
Source:
Global ecology and biogeography 2022 v.31 no.6 pp. 1066-1077
ISSN:
1466-822X
Subject:
genetic drift,   etc   ; Arabidopsis lyrata subsp. lyrata; biogeography; genetic variation; niches; population size; temperature; North America;     Show all 8 Subjects
Abstract:
... AIM: Species’ range limits, when not caused by dispersal limitation, are the result of constraints to the evolution of the ecological niche such that further range expansion is slow or not possible. An important evolutionary constraint at range edges may be the enhanced action of genetic drift. Here we tested whether a history of small population size and enhanced genetic drift was linked with red ...
DOI:
10.1111/geb.13483

13. Genetic variation in westslope cutthroat trout reveals that widespread genetic rescue is warranted

Author:
Ryan P. Kovach; Robb F. Leary; Donovan A. Bell; Sally Painter; Angela Lodmell; Andrew R. Whiteley
Source:
Canadian journal of fisheries and aquatic sciences 2022 v.79 no.6 pp. 936-946
ISSN:
1205-7533
Subject:
genetic drift,   etc   ; Oncorhynchus clarkii; drainage; freshwater; genetic rescue; genetic variation; heterozygosity; humans; population structure; Missouri;     Show all 10 Subjects
Abstract:
... Although human fragmentation of freshwater habitats is ubiquitous, the genetic consequences of isolation and a roadmap to address them are poorly documented for most fishes. This is unfortunate, because translocation for genetic rescue could help mitigate problems. We used genetic data (32 SNPs) from 203 populations of westslope cutthroat trout (Oncorhynchus clarkii lewisi) to (1) document the eff ...
DOI:
10.1139/cjfas-2021-0102

14. Distinguishing between unreliability and dishonesty: A comparative study of aggressive communication in crayfish

Author:
Zackary A. Graham; Michael J. Angilletta Jr.
Source:
Functional ecology 2022 v.36 no.1 pp. 73-82
ISSN:
0269-8463
Subject:
genetic drift,   etc   ; aggression; animal communication; body size; claws; comparative study; crayfish; ecology; fecundity; physical activity; social dominance;     Show all 11 Subjects
Abstract:
... A major challenge in the study of animal communication is distinguishing whether signals convey honest or dishonest information. Biologists infer the honesty of a signal from its correlation with the information being signalled (e.g. fecundity or fighting ability)—the better the correlation, the more honest the signal. However, this view of signalling potentially conflates unreliable indicators wi ...
DOI:
10.1111/1365-2435.13927

15. Evolution during seed production for ecological restoration? A molecular analysis of 19 species finds only minor genomic changes

Author:
Malte Conrady; Christian Lampei; Oliver Bossdorf; Walter Durka; Anna Bucharova
Source:
Journal of applied ecology 2022 v.59 no.5 pp. 1383-1393
ISSN:
0021-8901
Subject:
genetic drift,   etc   ; applied ecology; ecological restoration; genetic stability; genetic variation; genomics; grasslands; outcrossing; seed dormancy; Austria; Germany;     Show all 11 Subjects
Abstract:
... A growing number of restoration projects require large amounts of seeds. As harvesting natural populations cannot cover the demand, wild plants are often propagated in large‐scale monocultures. There are concerns that this cultivation process may cause genetic drift and unintended selection, altering the genetic properties of the cultivated populations and reducing their genetic diversity. Such ch ...
DOI:
10.1111/1365-2664.14155

16. Adaptive divergence in bill morphology and other thermoregulatory traits is facilitated by restricted gene flow in song sparrows on the California Channel Islands

Author:
Maybellene P. Gamboa; Cameron K. Ghalambor; T. Scott Sillett; Scott A. Morrison; W. Chris Funk
Source:
Molecular ecology 2022 v.31 no.2 pp. 603-619
ISSN:
0962-1083
Subject:
genetic drift,   etc   ; Melospiza melodia; adaptive radiation; climate; color; gene flow; genomics; phenotypic variation; physiology; plumage; population structure; California;     Show all 12 Subjects
Abstract:
... Disentangling the effects of neutral and adaptive processes in maintaining phenotypic variation across environmental gradients is challenging in natural populations. Song sparrows (Melospiza melodia) on the California Channel Islands occupy a pronounced east‐west climate gradient within a small spatial scale, providing a unique opportunity to examine the interaction of genetic isolation (reduced g ...
DOI:
10.1111/mec.16253

17. Improving Genetic Status Despite Fragmentation and Small Effective Population Size in Hill's Thistle (Cirsium hillii)

Author:
Daniel P. Carlsen; Leah E. Sefton; Chelsea L. Butcher; Chelsi P. Abbott; Joanne M. Dannenhoffer; Bradley J. Swanson
Source:
American midland naturalist 2022 v.187 no.1 pp. 1-13
ISSN:
0003-0031
Subject:
genetic drift,   etc   ; Cirsium; allelic variation; effective population size; habitat destruction; habitats; heterozygosity; microsatellite repeats; risk; threatened species; Michigan;     Show all 11 Subjects
Abstract:
... Small, fragmented populations are at greater risk of extirpation due to reduced genetic diversity from inbreeding and genetic drift. These processes ultimately decrease individual fitness and reduce the ability of a population to adapt. Hill's thistle (Cirsium hillii) is classified as a threatened species throughout much of its range, primarily due to the destruction and fragmentation of its habit ...
DOI:
10.1674/0003-0031-187.1.1

18. Environment dependence of the expression of mutational load and species’ range limits

Author:
Antoine Perrier; Darío Sánchez‐Castro; Yvonne Willi
Source:
Journal of evolutionary biology 2022 v.35 no.5 pp. 731-741
ISSN:
1010-061X
Subject:
genetic drift,   etc   ; Allee effect; Arabidopsis lyrata; empirical research; environmental quality; evolutionary biology; genomics; heterosis; heterozygosity; intrinsic factors; synergism;     Show all 11 Subjects
Abstract:
... Theoretical and empirical research on the causes of species’ range limits suggest the contribution of several intrinsic and extrinsic factors, with potentially complex interactions among them. An intrinsic factor proposed by recent theory is mutational load increasing towards range edges because of genetic drift. Furthermore, environmental quality may decline towards range edges and enhance the ex ...
DOI:
10.1111/jeb.13997

19. Arthropod-Borne Virus Surveillance as a Tool to Study the Australian Mosquito Virome

Author:
Agathe M. G. Colmant; David Warrilow; Sonja Hall-Mendelin; Michael Onn; Jody Hobson-Peters; Bixing Huang; Nina Kurucz; Allan Warchot; Bridgette R. Primmer; Sally Isberg; Helle Bielefeldt-Ohmann; Roy A. Hall
Source:
Viruses 2022 v.14 no.9 pp. -
ISSN:
1999-4915
Subject:
genetic drift,   etc   ; Coquillettidia; Neohydatothrips variabilis; RNA; West Nile virus; crocodiles; insects; monitoring; streams; surveys; viruses; China; Northern Territory;     Show all 13 Subjects
Abstract:
... Mosquitoes (n = 4381 in 198 pools) were collected in March and April 2018 to survey the presence of West Nile virus Kunjin strain in mosquito populations around crocodile farms in the Darwin region of the Northern Territory (NT) of Australia. While no Kunjin virus was detected in these mosquitoes, we applied our viral replicative intermediates screening system termed monoclonal antibodies to viral ...
DOI:
10.3390/v14091882

20. Genomic consequences of colonisation, migration and genetic drift in barn owl insular populations of the eastern Mediterranean

Author:
Ana Paula Machado; Alexandros Topaloudis; Tristan Cumer; Eléonore Lavanchy; Vasileios Bontzorlos; Renato Ceccherelli; Motti Charter; Nicolaos Kassinis; Petros Lymberakis; Francesca Manzia; Anne‐Lyse Ducrest; Mélanie Dupasquier; Nicolas Guex; Alexandre Roulin; Jérôme Goudet
Source:
Molecular ecology 2022 v.31 no.5 pp. 1375-1388
ISSN:
0962-1083
Subject:
genetic drift,   etc   ; Cyprus; Tyto alba; barns; climate; ecology; gene flow; genetic variation; genome; genomics; Crete; Greece; Mediterranean Sea;     Show all 13 Subjects
Abstract:
... The study of insular populations was key in the development of evolutionary theory. The successful colonisation of an island depends on the geographic context, and specific characteristics of the organism and the island, but also on stochastic processes. As a result, apparently identical islands may harbour populations with contrasting histories. Here, we use whole genome sequences of 65 barn owls ...
DOI:
10.1111/mec.16324