Abstract
Mitochondrial and nuclear introgression among closely related taxa can greatly complicate the process of determining their phylogenetic relationships. In the Central Highlands of North America, many fish taxa have undergone introgression; in this study, we demonstrate the existence of an unusual introgression event in the Etheostoma zonale species group. We used one mitochondrial and seven nuclear loci to determine the relationships of the taxa within the E. zonale group, and their degree of differentiation. We found evidence of multiple divergent populations within each species; much of the divergence within species has taken place during the Pleistocene. We also found evidence of a previously unknown cryptic species in the Upper Tennessee River which diverged from the remainder of the group during the Pliocene, and has undergone mitochondrial and nuclear introgression with E. zonale, in an apparent process of speciation reversal. We examined the effects that using varying types of recombination tests to eliminate the signal of recombination from nuclear loci would have on the phylogenetic placement of this introgressed lineage in our species tree analyses.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 13-28 |
| Number of pages | 16 |
| Journal | Molecular Phylogenetics and Evolution |
| Volume | 70 |
| Issue number | 1 |
| DOIs | |
| State | Published - Jan 1 2014 |
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Keywords
- Biogeography
- Hybridization
- Ichthyology
- Introgression
- Recombination
- Species trees
Cite this
Cryptic speciation reversal in the Etheostoma zonale (Teleostei : Percidae) species group, with an examination of the effect of recombination and introgression on species tree inference. / Halas, Dominik; Simons, Andrew M.
In: Molecular Phylogenetics and Evolution, Vol. 70, No. 1, 01.01.2014, p. 13-28.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Cryptic speciation reversal in the Etheostoma zonale (Teleostei
T2 - Percidae) species group, with an examination of the effect of recombination and introgression on species tree inference
AU - Halas, Dominik
AU - Simons, Andrew M
PY - 2014/1/1
Y1 - 2014/1/1
N2 - Mitochondrial and nuclear introgression among closely related taxa can greatly complicate the process of determining their phylogenetic relationships. In the Central Highlands of North America, many fish taxa have undergone introgression; in this study, we demonstrate the existence of an unusual introgression event in the Etheostoma zonale species group. We used one mitochondrial and seven nuclear loci to determine the relationships of the taxa within the E. zonale group, and their degree of differentiation. We found evidence of multiple divergent populations within each species; much of the divergence within species has taken place during the Pleistocene. We also found evidence of a previously unknown cryptic species in the Upper Tennessee River which diverged from the remainder of the group during the Pliocene, and has undergone mitochondrial and nuclear introgression with E. zonale, in an apparent process of speciation reversal. We examined the effects that using varying types of recombination tests to eliminate the signal of recombination from nuclear loci would have on the phylogenetic placement of this introgressed lineage in our species tree analyses.
AB - Mitochondrial and nuclear introgression among closely related taxa can greatly complicate the process of determining their phylogenetic relationships. In the Central Highlands of North America, many fish taxa have undergone introgression; in this study, we demonstrate the existence of an unusual introgression event in the Etheostoma zonale species group. We used one mitochondrial and seven nuclear loci to determine the relationships of the taxa within the E. zonale group, and their degree of differentiation. We found evidence of multiple divergent populations within each species; much of the divergence within species has taken place during the Pleistocene. We also found evidence of a previously unknown cryptic species in the Upper Tennessee River which diverged from the remainder of the group during the Pliocene, and has undergone mitochondrial and nuclear introgression with E. zonale, in an apparent process of speciation reversal. We examined the effects that using varying types of recombination tests to eliminate the signal of recombination from nuclear loci would have on the phylogenetic placement of this introgressed lineage in our species tree analyses.
KW - Biogeography
KW - Hybridization
KW - Ichthyology
KW - Introgression
KW - Recombination
KW - Species trees
UR - http://www.scopus.com/inward/record.url?scp=84884365812&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84884365812&partnerID=8YFLogxK
U2 - 10.1016/j.ympev.2013.08.014
DO - 10.1016/j.ympev.2013.08.014
M3 - Article
C2 - 23994165
AN - SCOPUS:84884365812
VL - 70
SP - 13
EP - 28
JO - Molecular Phylogenetics and Evolution
JF - Molecular Phylogenetics and Evolution
SN - 1055-7903
IS - 1
ER -