Sympatric speciation in palms on an oceanic island

@article{Savolainen2006SympatricSI,
  title={Sympatric speciation in palms on an oceanic island},
  author={Vincent Savolainen and Marie-Charlotte Anstett and Christian Lexer and Ian Hutton and James J. Clarkson and Maria Vibe Norup and Martyn P. Powell and David A. Springate and Nicolas Salamin and William J. Baker},
  journal={Nature},
  year={2006},
  volume={441},
  pages={210-213}
}
The origin of species diversity has challenged biologists for over two centuries. [...] Key Result A large dated phylogenetic tree shows that the two species of Howea, endemic to the remote Lord Howe Island, are sister taxa and diverged from each other well after the island was formed 6.9 million years ago. During fieldwork, we found a substantial disjunction in flowering time that is correlated with soil preference.Expand
View on Nature
csun.edu
586 Citations
Highly Influential Citations
28
Background Citations
270
Methods Citations
19
Results Citations
15

Figures, Tables, and Topics from this paper

586 Citations

Citation Type

Citation Type

Sympatric speciation in a genus of marine reef fishes
TLDR
The study addresses limitations of previous studies and supports new criteria for inferring sympatric speciation, as well as comparing aspects of reproductive isolation between allopatric and sympatrics taxa both in nature and in the laboratory. Expand
Evolutionary biology: Sympatric plant speciation in islands? (Reply)
TLDR
Stuessy questions the conclusions of sympatric speciation in a case study of palms on Lord Howe Island and proposes an alternative hypothesis, whereby the two Howea species evolved allopatrically when the island was larger and less eroded. Expand
Evolutionary biology: Sympatric plant speciation in islands?
TLDR
Comparative data on two endemic species of the palm genus Howea in Lord Howe Island are presented, from which it is inferred that speciation was sympatric — that is, divergence had occurred in the absence of geographic isolation. Expand
A comparative analysis of the mechanisms underlying speciation on Lord Howe Island
TLDR
Genetic analyses show that prezygotic isolating barriers within species are currently insufficiently strong to allow further population differentiation, and species distribution modelling indicates that competitive exclusion may result in selection against admixed individuals. Expand
A comparative analysis of island floras challenges taxonomy‐based biogeographical models of speciation
TLDR
One of the first, complete assessments of the geographic modes of speciation for the flora of a small oceanic island is presented, showing that widely used island biogeography approaches overestimate rates of in situ speciation. Expand
Sympatric speciation in mountain roses (Metrosideros) on an oceanic island
TLDR
Prezygotic reproductive isolation is mediated by flowering time shifts in the species, and likely evolved under selection, to drive the completion of speciation within a small geographical area. Expand
Evidence for sympatric speciation in a Wallacean ancient lake
TLDR
The results all concur with criteria necessary to demonstrate sympatric speciation in ricefishes on Sulawesi, an island of Wallacea, and it is found that the three species are morphologically distinguishable and clearly separated by population‐structure analyses based on the SNPs, suggesting that they are reproductively isolated from each other. Expand
PHYLOGENETIC EVIDENCE FOR MULTIPLE SYMPATRIC ECOLOGICAL DIVERSIFICATION IN A MARINE SNAIL
TLDR
This analysis provides strong evidence that divergent selection across a sharp ecological gradient promoted the parallel divergence of body size and shape between two sympatric ecotypes, which may represent the first step in speciation. Expand
How sympatric is speciation in the Howea palms of Lord Howe Island?
TLDR
It is found that Howea forsteriana is less abundant than Howea belmoreana, and speciation in Howea was indeed sympatric, although under certain strict definitions it may be called parapatric. Expand
Ecological speciation along an elevational gradient in a tropical passerine bird?
TLDR
Although the two forms do not appear to have differentiated locally in parapatry, morphological and vocal divergence along the elevational gradient is consistent with adaptation, suggesting a possible link between adaptive evolution in morphology and songs and the origin of reproductive isolation via a behavioural barrier to gene flow. Expand
...
1
2
3
4
5
...

References

SHOWING 1-10 OF 37 REFERENCES
On the origin of species by sympatric speciation
TLDR
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. Expand
Sympatric speciation suggested by monophyly of crater lake cichlids
TLDR
A mitochondrial DNA analysis of cichlid species flocks endemic to two such lakes in Cameroon suggests that the flocks in each lake are monophyletic: the implication being that each lake was colonized once only, the size and shape of each lake being such that subsequent diversification would have been sympatric. Expand
Natural selection and sympatric divergence in the apple maggot Rhagoletis pomonella
TLDR
A gene–environment interaction (fitness trade-off) that is related to host phenology and that genetically differentiates the races is documented. Expand
Interactions among quantitative traits in the course of sympatric speciation
TLDR
The hypergeometric phenotypic model is used to show that sympatric speciation is possible even when fitness and mate choice depend on different quantitative traits, so that speciation must involve formation of covariance between these traits. Expand
Sympatric speciation by sexual selection
TLDR
It is shown that variation in a male secondary sexual character with two conspicuous extremes and the corresponding variance in female mating preference around no preference may jointly evolve into bimodal distributions with increasing modal divergence of the male and female traits, pulling a population apart into two prezygotically isolated populations. Expand
Sympatric speciation in animals: the ugly duckling grows up.
  • S. Via
  • Biology, Medicine
  • Trends in ecology & evolution
  • 2001
TLDR
It might be time for a re-evaluation of the geographical classification of speciation modes in favor of one based primarily on evolutionary mechanisms. Expand
Sympatric speciation in animals: new wine in old bottles.
  • G. Bush
  • Biology, Medicine
  • Trends in ecology & evolution
  • 1994
TLDR
The initiation of speciation through a habitat shift in animals which mate within a preferred habitat (such as many phytophagous and parasitic invertebrates and some vertebrates) requires few genetic changes. Expand
Polyploid incidence and evolution.
TLDR
New estimates for the incidence of polyploidy in ferns and flowering plants are presented based on a simple model describing transitions between odd and even base chromosome numbers, and it is indicated that ploidy changes may represent from 2 to 4% of speciation events in flowering plants and 7% in f Ferns. Expand
Speciation by host switch in brood parasitic indigobirds
TLDR
It is shown that all indigobird species are similar genetically, but are significantly differentiated in both mitochondrial haplotype and nuclear allele frequencies, which support a model of recent sympatric speciation. Expand
Monophyletic origin of Lake Victoria cichlid fishes suggested by mitochondrial DNA sequences
TLDR
This work sequenced up to 803 base pairs of mitochondrial DNA from 14 representative Victorian species and 23 additional African species to study the 'flock' of cichlid fishes in Lake Victoria. Expand
...
1
2
3
4
...