Rapid and Predictable Evolution of Admixed Populations Between Two Drosophila Species Pairs
Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
StandardStandard
Yn: Genetics, Cyfrol 214, Rhif 1, 01.01.2020, t. 211-230.
Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
HarvardHarvard
APA
CBE
MLA
VancouverVancouver
Author
RIS
TY - JOUR
T1 - Rapid and Predictable Evolution of Admixed Populations Between Two Drosophila Species Pairs
AU - Matute, Daniel R.
AU - Comeault, Aaron
AU - Earley, Eric
AU - Serrato-Capuchina, Antonio
AU - Peede, David
AU - Monroy-Eklund, Anaïs
AU - Huang, Wen
AU - Jones, Corbin D.
AU - Mackay, Trudy F.C.
AU - Coyne, Jerry A.
N1 - Copyright © 2020 by the Genetics Society of America.
PY - 2020/1/1
Y1 - 2020/1/1
N2 - Abstract In this article, Matute et al. report an experiment in which they generated eight interspecific admixed populations using two species pairs of Drosophila. They found that in both species pairs, and across all experimental replicates... The consequences of hybridization are varied, ranging from the origin of new lineages, introgression of some genes between species, to the extinction of one of the hybridizing species. We generated replicate admixed populations between two pairs of sister species of Drosophila: D. simulans and D. mauritiana; and D. yakuba and D. santomea. Each pair consisted of a continental species and an island endemic. The admixed populations were maintained by random mating in discrete generations for over 20 generations. We assessed morphological, behavioral, and fitness-related traits from each replicate population periodically, and sequenced genomic DNA from the populations at generation 20. For both pairs of species, species-specific traits and their genomes regressed to those of the continental species. A few alleles from the island species persisted, but they tended to be proportionally rare among all sites in the genome and were rarely fixed within the populations. This paucity of alleles from the island species was particularly pronounced on the X-chromosome. These results indicate that nearly all foreign genes were quickly eliminated after hybridization and that selection against the minor species genome might be similar across experimental replicates.
AB - Abstract In this article, Matute et al. report an experiment in which they generated eight interspecific admixed populations using two species pairs of Drosophila. They found that in both species pairs, and across all experimental replicates... The consequences of hybridization are varied, ranging from the origin of new lineages, introgression of some genes between species, to the extinction of one of the hybridizing species. We generated replicate admixed populations between two pairs of sister species of Drosophila: D. simulans and D. mauritiana; and D. yakuba and D. santomea. Each pair consisted of a continental species and an island endemic. The admixed populations were maintained by random mating in discrete generations for over 20 generations. We assessed morphological, behavioral, and fitness-related traits from each replicate population periodically, and sequenced genomic DNA from the populations at generation 20. For both pairs of species, species-specific traits and their genomes regressed to those of the continental species. A few alleles from the island species persisted, but they tended to be proportionally rare among all sites in the genome and were rarely fixed within the populations. This paucity of alleles from the island species was particularly pronounced on the X-chromosome. These results indicate that nearly all foreign genes were quickly eliminated after hybridization and that selection against the minor species genome might be similar across experimental replicates.
KW - Animals
KW - Biological Evolution
KW - Chromosome Mapping
KW - Drosophila/classification
KW - Genetic Speciation
KW - Genetic Variation
KW - Genetics, Population
KW - Genome
KW - Hybridization, Genetic
KW - Reproduction
KW - Sexual Behavior, Animal
U2 - 10.1534/genetics.119.302685
DO - 10.1534/genetics.119.302685
M3 - Article
C2 - 31767631
VL - 214
SP - 211
EP - 230
JO - Genetics
JF - Genetics
SN - 0016-6731
IS - 1
ER -