• Corpus ID: 29826700

Effects of Post-Glacial Range Expansions and Population Bottlenecks on Species Richness

  title={Effects of Post-Glacial Range Expansions and Population Bottlenecks on Species Richness},
  author={Anders Ödeen},
This thesis relates modern speciation theory to the effects of sudden changes in the range and size of populations. Special reference is made to the climatic oscillations during the Quaternary ice ages. A meta-analysis of laboratory experiments showed that support for allopatric speciation is weak, especially for the peripatric type of allopatric speciation. Furthermore, factors traditionally believed to increase the likelihood of speciation have had little effect on the generation of… 

Dynamics in the evolution of sexual traits: losses and gains, radiation and convergence in yellow wagtails (Motacilla flava)

We analyse patterns of genetic diversity and song complexity in the Palaearctic yellow wagtail (Motacilla flava), a highly polytypic species complex. Mitochondrial and nuclear DNA show that the

Discordance between genomic divergence and phenotypic variation in a rapidly evolving avian genus (Motacilla).

Mitochondrial DNA and plumage evolution in the white wagtail Motacilla alba

336.We analyzed sequences of two mitochondrial DNA (mtDNA) gene regions (controlregion and ND2) totaling 1477 base-pairs from 232 specimens of the white wagtailMotacilla alba obtained from 27

Wintering range of western yellow wagtail Motacilla flava in Africa and Europe in a historical perspective

Received: 25 October 2018 Accepted for publication: 30 July 2019 Online publication: 7 October 2020 Abstract Over the past few centuries, some subspecies of the western yellow wagtail Motacilla flava

Loss of genetic variability in reintroduced roach (Rutilus rutilus) populations

Genetic variation at five microsatellite loci and in mtDNA was surveyed in reintroduced and ‘control’ populations of roach in Sweden, and measures of genetic variability were strongly correlated with lake characteristics that influence population size and food availability.

Evolution of the breeding range of the Black-headed Yellow Wagtail (Motacilla flava feldegg)

The Black-headed Yellow Wagtail ( Motacilla flava feldegg ) has shown a clear tendency to expand its breeding range in the period 1830-2015, with an accentuation of the phenomenon during the second

Taxonomic status of grey-headed Yellow Wagtails breeding in western China

The localization of its apparent range in relation to other subspecies along with fairly consistent male and female plumages suggest that it is more likely to represent an undescribed taxon, but it is argued that more research is needed to firmly establish its taxonomic status.

Directional preferences of Yellow Wagtail (Motacilla flava) (Linnaeus, 1758) subspecies migrating through Kızılırmak Delta in spring

Both observation and ringing data showed that the Yellow Wagtail subspecies stop-over in mixed flocks during spring migration in Kızılırmak Delta before they cross the Black Sea, which is a large migration barrier, and use this area for resting and feeding.

The evolutionary history of the white wagtail species complex, (Passeriformes: Motacillidae: Motacilla alba)

The white wagtail complex was probably in the Mediterranean, with its geography having a considerable effect on speciation processes, and the influence of dispersal on the distribution and divergence of this complex species was showed.

Breeding biology of two wagtail subspecies on Ulleung Island, Korea: Amur Wagtails, Motacilla alba leucopsis and Black-backed Wagtails, M. a. lugens

The results indicate no reproductive barrier between the two subspecies, but that some post-isolating mechanisms are still in progress.



Laboratory environments are not conducive for allopatric speciation

It is suggested that allopatric speciation experiments are more likely to yield conclusive results under divergent selection than under drift, and points to the benefits of large populations and many generations.

Sexual conflict promotes speciation in insects.

The results not only highlight the general importance of postmating sexual selection in speciation, but also support the recent suggestion that sexual conflict is a key engine of speciation.

Effective population size may limit the power of laboratory experiments to demonstrate sympatric and parapatric speciation

This study demonstrates that the experimental evidence frequently used as an argument against sympatric and parapatric speciation models is not as strong as previously believed.

Genetic Revolutions, Founder Effects, and Speciation

It is argued that, although founder effects may cause speciation under sufficiently stringent conditions, they are only one extreme of a continuous range of possibilities, and divergence may be driven in a variety of ways, without the need for drastic external changes.


The data from Drosophila are unique-and are likely to remain so-because of the large number of crossable species and the ease of estimating sexual and postzygotic isolation in the laboratory, and some estimates of reproductive isolation and phylogenetic relatedness when better data became available are revised.


  • K. Kaneshiro
  • Biology
    Evolution; international journal of organic evolution
  • 1980
This paper elaborates the hypothesis proposed by Kaneshiro (1976) and proposes a uni-directional phylogeny for the six populations of the grimshawi complex of species.

The colonization history and present-day population structure of the European great tit (Parus major major)

The colonization history and present-day population structure of the European subspecies of the great tit Parus major major were studied using mitochondrial control region sequences. One major


The role of geographical separation in generating allopatry has been overemphasized in the past and its role in generating diminished gene flow in combination with strong, discontinuous, and multifarious divergent selection, has been largely unappreciated.

Ecology and the origin of species.

Founder Effect Speciation: A Theoretical Reassessment

The theoretical models demonstrated are closely related to the verbal schemes of Mayr's "genetic revolutions," Carson's founder-flush process, and Templeton's genetic transilience and demonstrate that founder effect speciation is plausible.