NDLI: Discordant introgression in a rapidly expanding hybrid swarm

Content Provider	PubMed Central
Author	Ward, Jessica L. Blum, Mike J. Walters, David M. Porter, Brady A. Burkhead, Noel Freeman, Byron
Copyright Year	2012
Abstract	The erosion of species boundaries can involve rapid evolutionary change. Consequently, many aspects of the process remain poorly understood, including the formation, expansion, and evolution of hybrid swarms. Biological invasions involving hybridization present exceptional opportunities to study the erosion of species boundaries because timelines of interactions and outcomes are frequently well known. Here, we examined clinal variation across codominant and maternally inherited genetic markers as well as phenotypic traits to characterize the expansion and evolution of a hybrid swarm between native Cyprinella venusta and invasive Cyprinella lutrensis minnows. Discordant introgression of phenotype, microsatellite multilocus genotype, and mtDNA haplotype indicates that the observable expansion of the C. venusta × C. lutrensis hybrid swarm is a false invasion front. Both parental and hybrid individuals closely resembling C. lutrensis are numerically dominant in the expansion wake, indicating that the non-native parental phenotype may be selectively favored. These findings show that cryptic introgression can extend beyond the phenotypic boundaries of hybrid swarms and that hybrid swarms likely expand more rapidly than can be documented from phenotypic variation alone. Similarly, dominance of a single parental phenotype following an introduction event may lead to instances of species erosion being mistaken for species displacement without hybridization.
Related Links	http://dx.doi.org/10.1111/j.1752-4571.2012.00249.x
Ending Page	392
Page Count	13
Starting Page	380
File Format	PDF
ISSN	17524571
e-ISSN	17524571
Journal	Evolutionary Applications
Issue Number	4
Volume Number	5
Language	English
Publisher	Blackwell Publishing Ltd
Publisher Date	2012-06-01
Access Restriction	Open
Rights Holder	Blackwell Publishing Ltd
Subject Keyword	Research in Higher Education
Content Type	Text
Resource Type	Article
Subject	Genetics Ecology, Evolution, Behavior and Systematics

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

Data from: Discordant introgression in a rapidly expanding hybrid swarm (Dataset)

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Data from: Discordant introgression in a rapidly expanding hybrid swarm (Dataset)

Differential introgression among loci across a hybrid zone of the intermediate horseshoe bat (Rhinolophus affinis)

Rapid movement and instability of an invasive hybrid swarm

Progressive genome-wide introgression in agricultural Campylobacter coli

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Noncoding Sequences Near Duplicated Genes Evolve Rapidly

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Sequential adaptive introgression of the mitochondrial genome in Drosophila yakuba and Drosophila santomea

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Discordant introgression in a rapidly expanding hybrid swarm