Are we analyzing speciation without prejudice?

@article{Johannesson2010AreWA,
  title={Are we analyzing speciation without prejudice?},
  author={Kerstin Johannesson},
  journal={Annals of the New York Academy of Sciences},
  year={2010},
  volume={1206}
}
  • K. Johannesson
  • Published 1 September 2010
  • Biology
  • Annals of the New York Academy of Sciences
Physical isolation has long been the null hypothesis of speciation, with exceptional evidence required to suggest speciation with gene flow. Following recent persuasive theoretical support and strong empirical examples of nonallopatric speciation, one might expect a changed view. However, a review of 73 recent empirical studies shows that when allopatric speciation is suggested, a nonallopatric alternative is rarely considered, whereas the opposite is true in studies suggesting sympatric… 
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15 Citations

THE RATE TEST OF SPECIATION: ESTIMATING THE LIKELIHOOD OF NON‐ALLOPATRIC SPECIATION FROM REPRODUCTIVE ISOLATION RATES IN DROSOPHILA

  • Roman Yukilevich
  • Biology
    Evolution; international journal of organic evolution
  • 2014
A new “rate test of speciation” is developed that estimates the likelihood of non‐allopatric speciation given the distribution of RI rates in allopatry versus sympatry, and shows how using RI measures can greatly inform us about the geographical mode of Speciation in nature.

Sympatric Speciation in the Post “Modern Synthesis” Era of Evolutionary Biology

The evolution of reproductive isolation solely due to natural selection is perhaps the most controversial manner by which sympatric speciation occurs, and it is that which is focused upon in this review.

New sea urchin phylogeography reveals latitudinal shifts associated with speciation

  • M. Hart
  • Biology
    Molecular ecology
  • 2012
‘Where’ and ‘when’ of Arbacia speciation are resolved, and an important question about ‘who’Arbacia species are resolved by revealing extensive allele sharing at both loci between a pair of broadly sympatric nominal species.

Evidence for nonallopatric speciation among closely related sympatric Heliotropium species in the Atacama Desert

The results support the idea that sympatric species of Heliotropium sect.

A complex speciation–richness relationship in a simple neutral model

This framework shows how a simple neutral model can be combined with network theory to reveal complex relationships between speciation, richness, and the spatial organization of populations.

Speciation: Goldschmidt’s Chromosomal Heresy, Once Supported by Gould and Dawkins, is Again Reinstated

With growing evidence for the uncoupling of speciation from adaptation, Goldschmidt’s view can be reinstate again and clarify its 19th-century roots.

When acting as a reproductive barrier for sympatric speciation, hybrid sterility can only be primary

  • D. Forsdyke
  • Biology
    Biological Journal of the Linnean Society
  • 2019
While WCB incompatibilities have long been observed on a microscopic scale, there is growing evidence for a role of dispersed finer DNA sequence differences.

Evolution of divergence between the river lamprey (Lampetra fluviatilis) and the brook lamprey (L.planeri) inferred by experimental approaches and population genomics

Overall this thesis showed that parasitic and non-parasitic lamprey ecotypes represent a promising model for studying speciation and notably the genomic architecture of divergence.

Speciation in the White‐breasted Nuthatch (Sitta carolinensis): a multilocus perspective

Coalescent analyses and hypothesis testing of nested isolation and migration models indicate that isolation and not gene flow has been the major evolutionary mechanism responsible for shaping genetic variation, and all the divergence events within S. carolinensis have occurred in response to the Pleistocene glacial cycles.

Environmental factors associated with genetic and phenotypic divergence among sympatric populations of Arctic charr (Salvelinus alpinus)

The implication is that breeding habitat plays a primary role in isolating populations that differentiate by drift and that phenotypically plastic changes have either become secondarily decoupled from the genetically defined populations or were never fundamental in driving the evolution of genetic diversity in the Windermere system.

References

SHOWING 1-10 OF 59 REFERENCES

Sympatric Speciation: Models and Empirical Evidence

It is now generally accepted that sympatric speciation has occurred in at least a few instances, and is theoretically plausible, and progress is being made on evaluating the empirical validity of key theoretical conditions for sympatrics speciation.

THE GEOGRAPHY OF MAMMALIAN SPECIATION: MIXED SIGNALS FROM PHYLOGENIES AND RANGE MAPS

The results support skepticism about ARC's power for inferring the biogeography of speciation and propose methodological improvements including changes in the way overlap between clades is quantified and Monte Carlo methods to test the null hypothesis of no relationship between phylogenetic relatedness and geographic range overlap.

On the origin of species by sympatric speciation

This work uses multilocus genetics to describe sexual reproduction in an individual-based model and considers the evolution of assortative mating, which leads to reproductive isolation between ecologically diverging subpopulations and conforms well with mounting empirical evidence for the sympatric origin of many species.

What, if anything, is sympatric speciation?

It is argued that testing whether a case fits a particular definition is less informative than evaluating the biological processes affecting divergence, and that this context can be better understood by modelling and measuring quantities, such as gene flow and selection, rather than assigning cases to discrete categories like sympatric and allopatric speciation.

Evidence for Ecological Speciation and Its Alternative

Tests of parallel evolution of reproductive isolation, trait-based assortative mating, and reproductive isolation by active selection have demonstrated that ecological speciation is a common means by which new species arise.

Natural selection in action during speciation

  • S. Via
  • Biology
    Proceedings of the National Academy of Sciences
  • 2009
The formation of the genetic mosaic during early ecological speciation is described, the establishment, effects, and transitory nature of divergence hitchhiking around key ecologically important genes are considered, and a 2-stage model for genetic divergence during ecological Speciation with gene flow is described.

Integration of populations and differentiation of species.

Contrary to early views, it is now clear that speciation can occur in the presence of gene flow and recent theory does support the long-held view that population structure and small population size may increase speciation rates, but only under special conditions.

Pattern, process and geographic modes of speciation

Advances in the study of speciation have come from studies of the processes that constrain or promote divergence, and how they are affected by geography.

Speciation with gene flow could be common

Understanding of the conditions that faciliate divergence in the face of gene flow is improved, by showing that gene flow between cave and spring salamanders was ongoing during speciation, rather than having occurred after a long period of allopatric divergence.

Learning about Modes of Speciation by Computational Approaches

A simulation study to assess the reliability of inferences about modes of speciation from the existing computational approaches alone finds that when one of many assumptions of the isolation—migration model is violated, the methods tend to yield biased estimates of the parameters, potentially lending spurious support for allopatric or parapatric divergence.
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