On the origin of asexual species by means of hybridization and drift

Publication: Research - peer-reviewEditorial

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On the origin of asexual species by means of hybridization and drift. / Hartfield, Matthew.

In: Molecular Ecology, Vol. 25, No. 14, 07.2016, p. 3264-3265.

Publication: Research - peer-reviewEditorial

Harvard

Hartfield, M 2016, 'On the origin of asexual species by means of hybridization and drift' Molecular Ecology, vol 25, no. 14, pp. 3264-3265. DOI: 10.1111/mec.13713

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MLA

Vancouver

Hartfield M. On the origin of asexual species by means of hybridization and drift. Molecular Ecology. 2016 Jul;25(14):3264-3265. Available from, DOI: 10.1111/mec.13713

Author

Hartfield, Matthew / On the origin of asexual species by means of hybridization and drift.

In: Molecular Ecology, Vol. 25, No. 14, 07.2016, p. 3264-3265.

Publication: Research - peer-reviewEditorial

Bibtex

@article{7f894792cddf46dca363be6fb6314584,
title = "On the origin of asexual species by means of hybridization and drift",
keywords = "animal mating, breeding systems, ecological genetics, evolution of sex, population genetics, BDELLOID ROTIFERS, FACULTATIVE SEX",
author = "Matthew Hartfield",
year = "2016",
month = "7",
doi = "10.1111/mec.13713",
volume = "25",
pages = "3264--3265",
journal = "Molecular Ecology",
issn = "0962-1083",
publisher = "Wiley-Blackwell Publishing Ltd.",
number = "14",

}

RIS

TY - JOUR

T1 - On the origin of asexual species by means of hybridization and drift

AU - Hartfield,Matthew

PY - 2016/7

Y1 - 2016/7

N2 - Several species of asexuals appear to have existed for millions of years. This is despite the prevalent view that natural selection is weakened without gene exchange, which should cause these organisms to rapidly go extinct. In theory, one can identify evolutionary long-lived asexuals from their allelic sequence divergence, also known as the 'Meselson effect', which leads to elevated within-individual diversity. Yet evidence that this phenomenon exists is mixed. Furthermore, several confounding factors can lead to similar outcomes, including the formation of asexual species by hybridization. Disentangling these factors has proved to be tricky, but Ament-Velasquez et al. (2016) have provided an elegant solution in this issue of Molecular Ecology. They studied transcriptomes and mitochondrial DNA from the Lineus genus of nemertean worms, which contains both sexual and asexual types, to first show that the asexual L. pseudolactus is a hybrid between a sexual and an asexual species. After isolating out diversity arising from this hybridization, they find subsequent evidence for the Meselson effect. This study sets a new standard for differentiating between the complex causes and consequences of asexuality.

AB - Several species of asexuals appear to have existed for millions of years. This is despite the prevalent view that natural selection is weakened without gene exchange, which should cause these organisms to rapidly go extinct. In theory, one can identify evolutionary long-lived asexuals from their allelic sequence divergence, also known as the 'Meselson effect', which leads to elevated within-individual diversity. Yet evidence that this phenomenon exists is mixed. Furthermore, several confounding factors can lead to similar outcomes, including the formation of asexual species by hybridization. Disentangling these factors has proved to be tricky, but Ament-Velasquez et al. (2016) have provided an elegant solution in this issue of Molecular Ecology. They studied transcriptomes and mitochondrial DNA from the Lineus genus of nemertean worms, which contains both sexual and asexual types, to first show that the asexual L. pseudolactus is a hybrid between a sexual and an asexual species. After isolating out diversity arising from this hybridization, they find subsequent evidence for the Meselson effect. This study sets a new standard for differentiating between the complex causes and consequences of asexuality.

KW - animal mating

KW - breeding systems

KW - ecological genetics

KW - evolution of sex

KW - population genetics

KW - BDELLOID ROTIFERS

KW - FACULTATIVE SEX

U2 - 10.1111/mec.13713

DO - 10.1111/mec.13713

M3 - Editorial

VL - 25

SP - 3264

EP - 3265

JO - Molecular Ecology

T2 - Molecular Ecology

JF - Molecular Ecology

SN - 0962-1083

IS - 14

ER -