Genetic Assimilation and the Postcolonization Erosion of Phenotypic Plasticity in Island Tiger Snakes

@article{Aubret2009GeneticAA,
  title={Genetic Assimilation and the Postcolonization Erosion of Phenotypic Plasticity in Island Tiger Snakes},
  author={Fabien Aubret and Richard Shine},
  journal={Current Biology},
  year={2009},
  volume={19},
  pages={1932-1936}
}
In 1942, C.H. Waddington [1] suggested that colonizing populations could initially succeed by flexibly altering their characteristics (phenotypic plasticity; [2-4]) in fitness-inducing traits, but selective forces would rapidly eliminate that plasticity to result in a canalized trait [1, 5, 6]. Waddington termed this process "genetic assimilation"[1, 7]. Despite the potential importance of genetic assimilation to evolutionary changes in founder populations [8-10], empirical evidence on this… Expand

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References

SHOWING 1-10 OF 38 REFERENCES
PERSPECTIVE: GENETIC ASSIMILATION AND A POSSIBLE EVOLUTIONARY PARADOX: CAN MACROEVOLUTION SOMETIMES BE SO FAST AS TO PASS US BY?
TLDR
A typical scenario of evolution of genetic assimilation via an intermediate stage of phenotypic plasticity is proposed and a conceptual map of current and future lines of research aimed at exploring the actual relevance of genetic Assimilation for evolutionary biology is discussed. Expand
PERSPECTIVE: GENETIC ASSIMILATION AND A POSSIBLE EVOLUTIONARY PARADOX: CAN MACROEVOLUTION SOMETIMES BE SO FAST AS TO PASS US BY?
TLDR
A typical scenario of evolution of genetic assimilation via an intermediate stage of phenotypic plasticity is proposed and a conceptual map of current and future lines of research aimed at exploring the actual relevance of genetic Assimilation for evolutionary biology is discussed. Expand
Evolutionary biology: Adaptive developmental plasticity in snakes
TLDR
It is found that both factors influence the difference in jaw size between the two populations, and the influence of developmental plasticity is greater in the island population. Expand
RAPID AND REPEATED ORIGIN OF INSULAR GIGANTISM AND DWARFISM IN AUSTRALIAN TIGER SNAKES
TLDR
The hypotheses that these body size shifts are due to strong selection imposed by the size of available prey items, rather than shared evolutionary history, are supported and are consistent with the notion that adaptive plasticity also has played an important role in body size changes. Expand
EVOLUTIONARY IMPLICATIONS OF PHENOTYPIC PLASTICITY IN THE HINDLIMB OF THE LIZARD ANOLIS SAGREI
Abstract Species of Anolis lizards that use broad substrates have long legs, which provide enhanced maximal sprint speed, whereas species that use narrow surfaces have short legs, which permitExpand
Adaptation to an extraordinary environment by evolution of phenotypic plasticity and genetic assimilation
  • R. Lande
  • Biology, Medicine
  • Journal of evolutionary biology
  • 2009
TLDR
Adaptation to a sudden extreme change in environment, beyond the usual range of background environmental fluctuations, is analysed using a quantitative genetic model of phenotypic plasticity, which indicates the optimal plasticity is proportional to the predictability of environmental fluctuations over time lag τ. Expand
Phenotypic plasticity and evolution by genetic assimilation
TLDR
It is suggested that much of the controversy hinges on several misunderstandings, including unwarranted fears of a general attempt at overthrowing the Modern Synthesis paradigm, and some fundamental conceptual confusion about the proper roles of phenotypic plasticity and natural selection within evolutionary theory. Expand
Biogeography and Ecology of the Reptiles of Tasmania and the Bass Strait Area
The distribution patterns of terrestrial animals and plants in Tasmania and the Bass Strait area are of great interest, for disjunctions of range can be dated and may help to reveal something of theExpand
Body Size of Tiger Snakes in Southern Australia, with Particular Reference to Notechis ater serventyi (Elapidae) on Chappell Island
TLDR
Prey availability, and the correlations of clutch size and reproductive frequency with body size, provide an explanation for the selective advantage of large body size. Expand
Canalization of Development and the Inheritance of Acquired Characters
THE battle, which raged for so long between the theories of evolution supported by geneticists on one hand and by naturalists on the other, has in recent years gone strongly in favour of the former.Expand
...
1
2
3
4
...