Plastic and genomic change of a newly established lizard population following a founder event
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Plastic and genomic change of a newly established lizard population following a founder event. / Sabolić, Iva; Mira, Óscar; Brandt, Débora Y. C.; Lisičić, Duje; Stapley, Jessica; Novosolov, Maria; Bakarić, Robert; Cizelj, Ivan; Glogoški, Marko; Hudina, Tomislav; Taverne, Maxime; Allentoft, Morten E.; Nielsen, Rasmus; Herrel, Anthony; Štambuk, Anamaria.
In: Molecular Ecology, 2024.Research output: Contribution to journal › Journal article › Research › peer-review
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TY - JOUR
T1 - Plastic and genomic change of a newly established lizard population following a founder event
AU - Sabolić, Iva
AU - Mira, Óscar
AU - Brandt, Débora Y. C.
AU - Lisičić, Duje
AU - Stapley, Jessica
AU - Novosolov, Maria
AU - Bakarić, Robert
AU - Cizelj, Ivan
AU - Glogoški, Marko
AU - Hudina, Tomislav
AU - Taverne, Maxime
AU - Allentoft, Morten E.
AU - Nielsen, Rasmus
AU - Herrel, Anthony
AU - Štambuk, Anamaria
N1 - Publisher Copyright: © 2023 John Wiley & Sons Ltd.
PY - 2024
Y1 - 2024
N2 - Understanding how phenotypic divergence arises among natural populations remains one of the major goals in evolutionary biology. As part of competitive exclusion experiment conducted in 1971, 10 individuals of Italian wall lizard (Podarcis siculus (Rafinesque-Schmaltz, 1810)) were transplanted from Pod Kopište Island to the nearby island of Pod Mrčaru (Adriatic Sea). Merely 35 years after the introduction, the newly established population on Pod Mrčaru Island had shifted their diet from predominantly insectivorous towards omnivorous and changed significantly in a range of morphological, behavioural, physiological and ecological characteristics. Here, we combine genomic and quantitative genetic approaches to determine the relative roles of genetic adaptation and phenotypic plasticity in driving this rapid phenotypic shift. Our results show genome-wide genetic differentiation between ancestral and transplanted population, with weak genetic erosion on Pod Mrčaru Island. Adaptive processes following the founder event are indicated by highly differentiated genomic loci associating with ecologically relevant phenotypic traits, and/or having a putatively adaptive role across multiple lizard populations. Diverged traits related to head size and shape or bite force showed moderate heritability in a crossing experiment, but between-population differences in these traits did not persist in a common garden environment. Our results confirm the existence of sufficient additive genetic variance for traits to evolve under selection while also demonstrating that phenotypic plasticity and/or genotype by environment interactions are the main drivers of population differentiation at this early evolutionary stage.
AB - Understanding how phenotypic divergence arises among natural populations remains one of the major goals in evolutionary biology. As part of competitive exclusion experiment conducted in 1971, 10 individuals of Italian wall lizard (Podarcis siculus (Rafinesque-Schmaltz, 1810)) were transplanted from Pod Kopište Island to the nearby island of Pod Mrčaru (Adriatic Sea). Merely 35 years after the introduction, the newly established population on Pod Mrčaru Island had shifted their diet from predominantly insectivorous towards omnivorous and changed significantly in a range of morphological, behavioural, physiological and ecological characteristics. Here, we combine genomic and quantitative genetic approaches to determine the relative roles of genetic adaptation and phenotypic plasticity in driving this rapid phenotypic shift. Our results show genome-wide genetic differentiation between ancestral and transplanted population, with weak genetic erosion on Pod Mrčaru Island. Adaptive processes following the founder event are indicated by highly differentiated genomic loci associating with ecologically relevant phenotypic traits, and/or having a putatively adaptive role across multiple lizard populations. Diverged traits related to head size and shape or bite force showed moderate heritability in a crossing experiment, but between-population differences in these traits did not persist in a common garden environment. Our results confirm the existence of sufficient additive genetic variance for traits to evolve under selection while also demonstrating that phenotypic plasticity and/or genotype by environment interactions are the main drivers of population differentiation at this early evolutionary stage.
KW - bottleneck
KW - heritability
KW - invasive success
KW - phenotypic plasticity
KW - population crossing experiment
KW - rapid evolution
U2 - 10.1111/mec.17255
DO - 10.1111/mec.17255
M3 - Journal article
C2 - 38133599
AN - SCOPUS:85180718284
JO - Molecular Ecology
JF - Molecular Ecology
SN - 0962-1083
ER -
ID: 379035122