Gene flow and the maintenance of species boundaries

Molecular Ecology
Erica L LarsonRichard G Harrison


Hybrid zones are regions where individuals from genetically differentiated populations meet and mate, resulting in at least some offspring of mixed ancestry. Patterns of gene flow (introgression) in hybrid zones vary across the genome, allowing assessment of the role of individual genes or genome regions in reproductive isolation. Here, we document patterns of introgression between two recently diverged species of field crickets. We sampled at a very fine spatial scale and genotyped crickets for 110 highly differentiated single nucleotide polymorphisms (SNPs) identified through transcriptome scans. Using both genomic and geographic cline analysis, we document remarkably abrupt transitions (<100 m) in allele frequencies for 50 loci, despite high levels of gene flow at other loci. These are among the steepest clines documented for any hybridizing taxa. Furthermore, the cricket hybrid zone provides one of the clearest examples of the semi-permeability of species boundaries. Comparisons between data from the fine-scale transect and data (for the same set of markers) from sampling a much larger area in a different region of the cricket hybrid zone reveal consistent patterns of introgression for individual loci. The consistency in pa...Continue Reading

Associated Datasets

Nov 21, 2013·Charles L. RossErica L. Larson


Jun 8, 2001·Evolution; International Journal of Organic Evolution·C A Buerkle, Loren H Rieseberg
Dec 19, 2002·Evolution; International Journal of Organic Evolution·Charles L Ross, Richard G Harrison
Sep 25, 2003·Evolution; International Journal of Organic Evolution·Timothy H VinesBeate Nürnberger
Sep 3, 2004·Evolution; International Journal of Organic Evolution·Ben L PhillipsCraig Moritz
May 30, 2006·Molecular Biology and Evolution·Jose A AndrésRichard G Harrison
May 23, 2008·Proceedings. Biological Sciences·Jose A AndrésRichard G Harrison
Sep 11, 2008·Heredity·Anna Qvarnström, R I Bailey
Jan 16, 2009·Molecular Ecology·Patrik NosilDaniel Ortiz-Barrientos
Feb 7, 2009·Science·Dolph Schluter
Jul 22, 2009·Evolution; International Journal of Organic Evolution·Luana S MarojaRichard G Harrison
Oct 3, 2009·Evolution; International Journal of Organic Evolution·Katherine C TeeterPriscilla K Tucker
Apr 6, 2011·Evolution; International Journal of Organic Evolution·Petra DufkováJaroslav Piálek
Apr 12, 2011·Molecular Ecology·Nicolas BiernePatrice David
Apr 28, 2011·Evolution; International Journal of Organic Evolution·Miloš MacholánJaroslav Piálek
Mar 1, 2010·Molecular Ecology Resources·Z Gompert, C Alex Buerkle
Nov 19, 2011·Journal of Evolutionary Biology·Erica L LarsonRichard G Harrison
Apr 24, 2012·Evolution; International Journal of Organic Evolution·Sonal Singhal, Craig Moritz
Jul 5, 2012·Evolution; International Journal of Organic Evolution·Z GompertC A Buerkle
Oct 17, 2012·PloS One·Erica L LarsonRichard G Harrison
Jan 18, 2013·Journal of Evolutionary Biology·R AbbottD Zinner
Apr 24, 2013·Ecology and Evolution·Erica L LarsonRichard G Harrison
Aug 7, 2013·Ecology and Evolution·Benjamin M Fitzpatrick
Dec 5, 2013·Evolution; International Journal of Organic Evolution·Erica L LarsonRichard G Harrison
Jan 1, 1979·Oecologia·Richard G Harrison


Jul 21, 2016·Current Opinion in Insect Science·Carlos F AriasW Owen McMillan
Aug 21, 2014·Evolution; International Journal of Organic Evolution·Scott A TaylorIrby Lovette
Mar 29, 2016·Royal Society Open Science·Jessica L McKenziePatricia M Schulte
Jun 4, 2014·Evolution; International Journal of Organic Evolution·Daniel T BaldassarreMichael S Webster
Feb 24, 2015·Molecular Ecology·Elizabeth G MandevilleC A Buerkle
Jan 8, 2015·Molecular Ecology·Loren RiesebergA Geraldes
May 20, 2015·Trends in Ecology & Evolution·Scott A TaylorRichard G Harrison
Apr 3, 2016·Molecular Ecology·Amanda M Kenney, Andrea Sweigart
Jul 2, 2016·Journal of Evolutionary Biology·J R Dupuis, Felix A H Sperling
Aug 26, 2014·The Journal of Heredity·Richard G Harrison, Erica L Larson
Apr 13, 2017·Evolution; International Journal of Organic Evolution·Benjamin M Winger
Mar 12, 2019·Evolution; International Journal of Organic Evolution·Florentine RiquetNicolas Bierne
Feb 11, 2019·Molecular Ecology·Shawn M BillermanMatthew D Carling
Oct 24, 2019·Molecular Ecology·J W Arntzen
Feb 9, 2020·Molecular Ecology·David L SlagerJohn Klicka
Mar 19, 2019·International Journal of Primatology·Liliana Cortés-OrtizDomingo Canales-Espinosa
Dec 24, 2019·Evolution Letters·Nora MitchellKenneth D Whitney
Aug 7, 2019·Journal of Evolutionary Biology·Paul S GinsbergKelly A Dyer
Sep 25, 2019·Molecular Ecology·Piotr ZielińskiWiesław Babik

Related Concepts

Trending Feeds


Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Hereditary Sensory Autonomic Neuropathy

Hereditary Sensory Autonomic Neuropathies are a group of inherited neurodegenerative disorders characterized clinically by loss of sensation and autonomic dysfunction. Here is the latest research on these neuropathies.

Spatio-Temporal Regulation of DNA Repair

DNA repair is a complex process regulated by several different classes of enzymes, including ligases, endonucleases, and polymerases. This feed focuses on the spatial and temporal regulation that accompanies DNA damage signaling and repair enzymes and processes.

Glut1 Deficiency

Glut1 deficiency, an autosomal dominant, genetic metabolic disorder associated with a deficiency of GLUT1, the protein that transports glucose across the blood brain barrier, is characterized by mental and motor developmental delays and infantile seizures. Follow the latest research on Glut1 deficiency with this feed.

Separation Anxiety

Separation anxiety is a type of anxiety disorder that involves excessive distress and anxiety with separation. This may include separation from places or people to which they have a strong emotional connection with. It often affects children more than adults. Here is the latest research on separation anxiety.

KIF1A Associated Neurological Disorder

KIF1A associated neurological disorder (KAND) is a rare neurodegenerative condition caused by mutations in the KIF1A gene. KAND may present with a wide range and severity of symptoms including stiff or weak leg muscles, low muscle tone, a lack of muscle coordination and balance, and intellectual disability. Find the latest research on KAND here.

Regulation of Vocal-Motor Plasticity

Dopaminergic projections to the basal ganglia and nucleus accumbens shape the learning and plasticity of motivated behaviors across species including the regulation of vocal-motor plasticity and performance in songbirds. Discover the latest research on the regulation of vocal-motor plasticity here.

Related Papers

Evolution; International Journal of Organic Evolution
Erica L LarsonRichard G Harrison
Evolution; International Journal of Organic Evolution
Katherine C TeeterPriscilla K Tucker
Evolution; International Journal of Organic Evolution
Luana S MarojaRichard G Harrison
© 2021 Meta ULC. All rights reserved