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Patterns of DNA methylation throughout a range expansion of an introduced songbird.

Content Provider	World Health Organization (WHO)-Global Index Medicus
Author	Liebl, Andrea L. Schrey, Aaron W. Richards, Christina L. Martin, Lynn B.
Spatial Coverage	Kenya
Description	Country affiliation: United States Author Affiliation: Liebl AL ( Department of Integrative Biology, University of South Florida, Tampa, FL 33620, USA. aliebl@mail.usf.edu)
Abstract	The spread of invasive species presents a genetic paradox: how do individuals overcome the genetic barriers associated with introductions (e.g., bottlenecks and founder effects) to become adapted to the new environment? In addition to genetic diversity, epigenetic variation also contributes to phenotypic variation and could influence the spread of an introduced species in novel environments. This may occur through two different (non-mutually exclusive) mechanisms. Individuals may benefit from existing (and heritable) epigenetic diversity or de novo epigenetic marks may increase in response to the new environment; both mechanisms might increase flexibility in new environments. Although epigenetic changes in invasive plants have been described, no data yet exist on the epigenetic changes throughout a range expansion of a vertebrate. Here, we used methylation sensitive-amplified fragment length polymorphism to explore genome-wide patterns of methylation in an expanding population of house sparrows (Passer domesticus). House sparrows were introduced to Kenya in the 1950s and have significant phenotypic variation dependent on the time since colonization. We found that Kenyan house sparrows had high levels of variation in methylation across the genome. Interestingly, there was a significant, potentially compensatory relationship between epigenetic and genetic diversity: epigenetic diversity was negatively correlated with genetic diversity and positively correlated with inbreeding across the range expansion. Thus, methylation may increase phenotypic variation and/or plasticity in response to new environments and therefore be an important source of inter-individual variation for adaptation in these environments, particularly over the short timescales over which invasions occur.
File Format	HTM / HTML
ISSN	15407063
e-ISSN	15577023
Journal	Integrative and Comparative Biology
Issue Number	2
Volume Number	53
Language	English
Publisher	Oxford University Press
Publisher Date	2013-08-01
Publisher Place	Great Britain (UK)
Access Restriction	Open
Subject Keyword	Discipline Zoology Discipline Biology Adaptation, Physiological Genetics Dna Methylation Introduced Species Sparrows Animals Epigenomics Founder Effect Kenya Phenotype Research Support, Non-u.s. Gov't Research Support, U.s. Gov't, Non-p.h.s.
Content Type	Text
Resource Type	Article
Subject	Plant Science Medicine Animal Science and Zoology

Sl.	Authority	Responsibilities	Communication Details
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

Ecological Epigenetics: Beyond MS-AFLP.

The role of methylation of DNA in environmental adaptation.

Epigenetics in comparative biology: why we should pay attention.

Rapid evolution of an invasive weed.

Physiological responses to shifts in multiple environmental stressors: relevance in a changing world.

Environmentally cued hatching in reptiles.

The integrated phenotype.

Physiological correlates of urbanization in a desert songbird.

Founder effects persist despite adaptive differentiation: a field experiment with lizards.

Patterns of DNA methylation throughout a range expansion of an introduced songbird.

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Ecological Epigenetics: Beyond MS-AFLP.

The role of methylation of DNA in environmental adaptation.

Epigenetics in comparative biology: why we should pay attention.

Rapid evolution of an invasive weed.

Physiological responses to shifts in multiple environmental stressors: relevance in a changing world.

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The integrated phenotype.

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Patterns of DNA methylation throughout a range expansion of an introduced songbird.