Editing Peripatric speciation (section)

=== Kaneshiro model ===
[[File:Kaneshiro Peripatric Speciation (process).png|right|thumb|upright=1.4|In the Kaneshiro model, a sample of a larger population results in an isolated population with fewer males that are able to lower the threshold of receptivity among females. Over time, choosy females are selected against and there is an increase in frequency of less choosy females resulting in a shift in the gene frequency of the population. Such a condition result in a "destabilized" genetic condition allowing new genetic variants to arise. Novel variants that are better adapted to the new habitat will be selected and over time the genetic makeup of the peripatric population may be different enough to become reproductively isolated from the old one.]] 
The Kaneshiro Model also provides an explanation of the mechanism of speciation during founder events as proposed by Ernst Mayr and Hampton Carson. In most cases, founder events result when single fertilized female is accidentally translocated to an entirely different location, e.g., an adjacent island among a chain of islands such as the Hawaiian Archipelago, and produces a few offspring. Such a founder colony is faced with extremely small population size which as described by the Kaneshiro Model, experiences a shift in the mating system towards and increase in frequency of less choosy females. The resulting destabilization of the genetic system provides the milieu for new genetic variants to arise providing the recipe for speciation to occur. Eventually, a growth in population size paired with novel [[Mating preferences#Female mate preferences|female mate preferences]] will give rise to reproductive isolation from the main population-thereby completing the speciation process.<ref name=KYK1980/> Support for this model comes from experiments and observation of species that exhibit asymmetric mating patterns such as the [[Hawaiian Drosophila|Hawaiian ''Drosophila'']] species<ref>{{Citation |title=Sexual selection and direction of evolution in the biosystematics of Hawaiian Drosophilidae |author=Kenneth Y. Kaneshiro |journal=Annual Review of Entomology |year=1983 |volume=28 |pages=161–178 |doi=10.1146/annurev.en.28.010183.001113}}</ref><ref>{{Citation |title=Behavioral Phylogenies and the Direction of Evolution |author=Luther Val Giddings & Alan R. Templeton |journal=Science |year=1983 |volume=220 |issue=4595 |pages=372–378 |doi=10.1126/science.220.4595.372 |pmid=17831399 |bibcode=1983Sci...220..372G |s2cid=45100702 }}</ref> or the Hawaiian cricket ''[[Laupala]]''.<ref>{{Citation |title=Mating asymmetry and the direction of evolution in the Hawaiian cricket genus ''Laupala'' |author=Kerry L. Shaw & Ezequiel Lugo |journal=Molecular Ecology |year=2001 |volume=10 |issue=3 |pages=751–759 |doi=10.1046/j.1365-294x.2001.01219.x |pmid=11298985 |bibcode=2001MolEc..10..751S |s2cid=38590572 }}</ref> However, while laboratory experiments are ongoing and yet to be completed in support of the model, there are field observations of shifts in the mating systems that undergo population bottlenecks which demonstrate that the dynamics of sexual selection is occurring in nature and therefore, it does represent a plausible process of peripatric speciation that takes place in nature.<ref name=AO&ABF2002/>