Sexual Selection and Direction of Evolution in the Biosystematics of Hawaiian Drosophilidae

Kaneshiro, Kenneth Y.

doi:10.1146/annurev.en.28.010183.001113

Cited by 127 publications

(140 citation statements)

References 25 publications

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“…The females from the older islands discriminate against males from the younger island. Conversely, females from the younger island show much less discriminatory behavior (32). Over time, the older population in a relatively stable environment appears to have built up an increasingly complex mate choice system.…”

Section: Selection Favoring Reproductive Isolating Barriers Is Questimentioning

confidence: 99%

Mate choice theory and the mode of selection in sexual populations

Carson

2003

Proc. Natl. Acad. Sci. U.S.A.

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Indirect new data imply that mate and͞or gamete choice are major selective forces driving genetic change in sexual populations. The system dictates nonrandom mating, an evolutionary process requiring both revised genetic theory and new data on heritability of characters underlying Darwinian fitness. Successfully reproducing individuals represent rare selections from among vigorous, competing survivors of preadult natural selection. Nonrandom mating has correlated demographic effects: reduced effective population size, inbreeding, low gene flow, and emphasis on deme structure. Characters involved in choice behavior at reproduction appear based on quantitative trait loci. This variability serves selection for fitness within the population, having only an incidental relationship to the origin of genetically based reproductive isolation between populations. The claim that extensive hybridization experiments with Drosophila indicate that selection favors a gradual progression of ''isolating mechanisms'' is flawed, because intragroup random mating is assumed. Over deep time, local sexual populations are strong, independent genetic systems that use rich fields of variable polygenic components of fitness. The sexual reproduction system thus particularizes, in small subspecific populations, the genetic basis of the grand adaptive sweep of selective evolutionary change, much as Darwin proposed.evolution ͉ genetic variability ͉ natural selection ͉ population genetics

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Section: Selection Favoring Reproductive Isolating Barriers Is Questimentioning

confidence: 99%

Mate choice theory and the mode of selection in sexual populations

Carson

2003

Proc. Natl. Acad. Sci. U.S.A.

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“…The closely related species pair, D. silvestris and D. heteroneura have undergone extensive morphological and behavioural differentiation as a result of founder events on the island of Hawaii Present Addresses: *Depament of Genetics, Washington University Medical School, St. Louis, Missouri 63110, t Office of Technology Assessment, United States Congress, Washington, D.C. (Carson, 1983;Kaneshiro, 1983). However, chromosome studies and isozyme analysis show little genetic change within and between these species.…”

Section: Introductionmentioning

confidence: 99%

Mitochondrial DNA variability in natural populations of Hawaiian Drosophila. I. Methods and levels of variability in D. silvestris and D. heteroneura populations

1986

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We describe techniques by which mitochondrial DNA (mtDNA) restriction site information can be obtained for up to 16 different restriction endonucleases on individual Hawaiian Drosophila, in particular D. silvestris and D. heteroneura. We have constructed mtDNA restriction site maps for a total of forty-eight wild caught genomes of both species, from seven major collecting sites on the island of Hawaii. Levels of variability are, in general, high in D. silvestris (p of Ewens et al., 1981 = 0.0486) and lower in D. heteroneura (p = 0.0327). Measures of population subdivision using Nei's G, indicate that about 50-60 per cent of the observed variability is due to interdemic subdivision. In accordance, populations within a species show a much lower level of variability, however some populations harbour individuals that are very divergent from the rest of their conspecifics at the same locality. We review two possible mechanisms that could explain the presence of these divergent individuals, hybridisation and the effects of stochastic branching processes.

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“…Fourth, speciation is frequently associated with lineages colonizing new areas. In fact, some of the best examples of dramatic radiations appear to have been driven by sexual selection as lineages colonized new areas (e.g., lineages on islands [Hawaiian Drosophila: Kaneshiro 1983Kaneshiro , 1988Kaneshiro , 1989Kaneshiro and Boake 1987;Hawaiian spiders: Gillespie 2004;Hawaiian crickets: Mendelson and Shaw 2005;Caribbean lizards: Losos 1998], cichlid radiations in the African rift lakes following their drying and refilling [Seehausen et al 1997;Kornfield and Smith 2000;Turner et al 2001;Verheyen et al 2003;Salzburger and Meyer 2004]). Recolonization of deglaciated areas during the interglacial periods of the Quaternary (reviewed in Hewitt 1999Hewitt , 2004) may also have provided substantial opportunities for such mechanisms to generate new species on continentwide bases.…”

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confidence: 99%

The Evolution of Female Mating Preferences: Differentiation From Species With Promiscuous Males Can Promote Speciation

McPeek

Gavrilets

2006

Evolution

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Abstract. Females of many species are frequently courted by promiscuous males of their own and other closely related species. Such mating interactions may impose strong selection on female mating preferences to favor trait values in conspecific males that allow females to discriminate them from their heterospecific rivals. We explore the consequences of such selection in models of the evolution of female mating preferences when females must interact with heterospecific males from which they are completely postreproductively isolated. Specifically, we allow the values of both the most preferred male trait and the tolerance of females for males that deviate from this most preferred trait to evolve. Also, we consider situations in which females base their mating decisions on multiple male traits and must interact with males of multiple species. Females will rapidly differentiate in preference when they sometimes mistake heterospecific males for suitable mates, and the differentiation of female preference will select for conspecific male traits to differentiate as well. In most circumstances, this differentiation continues indefinitely, but slows substantially once females are differentiated enough to make mistakes rare. Populations of females with broader preference functions (i.e., broader tolerance for males with trait values that deviate from females' most preferred values) will evolve further to differentiate if the shape of the function cannot evolve. Also, the magnitude of separation that evolves is larger and achieved faster when conspecific males have lower relative abundance. The direction of differentiation is also very sensitive to initial conditions if females base their mate choices on multiple male traits. We discuss how these selection pressures on female mate choice may lead to speciation by generating differentiation among populations of a progenitor species that experiences different assemblages of heterospecifics. Opportunities for differentiation increase as the number of traits involved in mate choice increase and as the number of species involved increases. We suggest that this mode of speciation may have been particularly prevalent in response to the cycles of climatic change throughout the Quaternary that forced the assembly and disassembly of entire communities on a continentwide basis.

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Sexual Selection and Direction of Evolution in the Biosystematics of Hawaiian Drosophilidae

Cited by 127 publications

References 25 publications

Mate choice theory and the mode of selection in sexual populations

Mate choice theory and the mode of selection in sexual populations

Mitochondrial DNA variability in natural populations of Hawaiian Drosophila. I. Methods and levels of variability in D. silvestris and D. heteroneura populations

The Evolution of Female Mating Preferences: Differentiation From Species With Promiscuous Males Can Promote Speciation

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