Cited by 366Chromosomal and Genetic VariationsEvolution and Genetic DynamicsEvolution and Paleontology Studies

The DOI matches its Crossref record; 42 of the 42 references it cites were found in a registry or an index.

The likelihood of homoploid hybrid speciation

Abstract

New species may be formed through hybridization and without an increase in ploidy. The challenge is for hybrid derivatives to escape the homogenizing effects of gene flow from parental species. The mechanisms hypothesized to underlie this process were modelled using a computer simulation. The model is of recombinational speciation, in which chromosomal rearrangements between parental species result in poor fertility of F1 hybrids, but through recombination, novel homozygous types are formed that have restored fertility. In simulations, stable populations bearing the recombinant karyotypes originated frequently and were maintained when the fertility of F1 hybrids was high. However, this high rate of origination was offset by low genetic isolation, and lower F1 hybrid fertility increased the evolutionary independence of derived populations. In addition, simulations showed that ecological and spatial isolation were required to achieve substantial reproductive isolation of incipient species. In the model, the opportunity for ecological isolation arose as a result of adaptation to extreme habitats not occupied by parental species, and any form of spatial isolation (e.g. founder events) contributed to genetic isolation. Our results confirmed the importance of the combination of factors that had been emphasized in verbal models and illustrate the trade-off between the frequency at which hybrid species arise and the genetic integrity of incipient species.

Overview

Integrity signals

Registry

Crossref · 10.1046/j.1365-2540.2000.00680.x

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Citations

Cites

Research works printed but not linked: 2

  1. Muller, H. J. (1942). Isolating mechanisms, evolution, and temperature. Biol Symposium. 6: 71–125.
  2. Schluter, D. (1998). Ecological causes of speciation. In: Howard, D. J. and Berlocher, S. H. (eds) Endless Forms: Species and Speciation, pp. 114–129. Oxford University Press, New York.

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Metadata

Authors
Buerkle, C. A., Morris, R. J., Asmussen, M. A., & Rieseberg, L. H.
Affiliations
  • Indiana University Bloomington (US)
  • University of Georgia (US)
Venue
Heredity
Published
2000-04
Volume
84
Issue
4
Pages
441-451
ISSN
  • 0018-067X (ISSN-L)
  • 1365-2540
OpenAlex
W2107564934
Cited by
366
References
42
Citations by year
2026: 8 · 2025: 12 · 2024: 11 · 2023: 14 · 2022: 9 · 2021: 10 · 2020: 15 · 2019: 19 · 2018: 13 · 2017: 13 · 2016: 11 · 2015: 17 · 2014: 21 · 2013: 18 · 2012: 23
FWCI
15.67
Type
journal article
Language
en
Open access
closed
Locations
  • Heredity (publishedVersion)
  • PubMed (publishedVersion)
Funders
National Science Foundation
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Chromosomal and Genetic Variations
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Evolution and Genetic Dynamics
  • Physical Sciences › Earth and Planetary Sciences › Paleontology › Evolution and Paleontology Studies
Keywords
homoploid hybrid speciation, hybridization, chromosomal rearrangements, F1 hybrid fertility, recombination, reproductive isolation, gene flow, karyotype evolution, habitat isolation, spatial isolation, founder events
MeSH terms
Animals, Ecology, Fertility, Humans, Hybridization, Genetic, Models, Genetic, Ploidies, Recombination, Genetic, Species Specificity, Likelihood Functions

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