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Citation for Study 21395

Citation title: "Phylogeography of the sand dollar genus Encope: implications regarding the Central American Isthmus and rates of molecular evolution".

Study name: "Phylogeography of the sand dollar genus Encope: implications regarding the Central American Isthmus and rates of molecular evolution".

This study is part of submission 21395 (Status: Published).

Citation

Coppard S.E., & Lessios H.A. 2017. Phylogeography of the sand dollar genus Encope: implications regarding the Central American Isthmus and rates of molecular evolution. Scientific Reports, .

Authors

Coppard S.E. (submitter) 315-859-4923
Lessios H.A.

Abstract

Vicariant events have been widely used to calibrate rates of molecular evolution, the completion of the Central American Isthmus more extensively than any other. Recent studies have claimed that rather than the generally accepted date of ~3 million years ago (Ma), the Isthmus was effectively complete by the middle Miocene, 13 Ma. We present a fossil calibrated phylogeny of the new world sand dollar genus Encope, based on one nuclear and four mitochondrial genes, calibrated with fossils at multiple nodes. Present day distributions of Encope are likely the result of multiple range contractions and extinction events. Most species are now endemic to a single region, but one widely distributed species in each ocean is composed of morphotypes previously described as separate species. The most recent separation between eastern Pacific and Caribbean extant clades occurred at 4.90 Ma, indicating that the Isthmus of Panama allowed genetic exchange until the Pliocene. The rate of evolution of mitochondrial genes in Encope has been ten times slower than in the closely related genera Mellita and Lanthonia. This large difference in rates suggests that splits between eastern Pacific and Caribbean biota, dated on the assumption of a ?universal? mitochondrial DNA clock are not valid.

Keywords

Encope, Mellitidae, speciation, Isthmus of Panama, Pliocene closure, ecophenotypic variation, slow rate of mtDNA evolution

External links

About this resource

Canonical resource URI: http://purl.org/phylo/treebase/phylows/study/TB2:S21395
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Show BibTeX reference

		@ARTICLE{TreeBASE2Ref27509,
	 author = {Simon E Coppard and H A Lessios},
	 title = {Phylogeography of the sand dollar genus Encope: implications regarding the Central American Isthmus and rates of molecular evolution},
	 year = {2017},
	 keywords = {Encope, Mellitidae, speciation, Isthmus of Panama, Pliocene closure, ecophenotypic variation, slow rate of mtDNA evolution},
	 doi = {},
	 url = {http://},
	 pmid = {},
	 journal = {Scientific Reports},
	 volume = {},
	 number = {},
	 pages = {},
	 abstract = {Vicariant events have been widely used to calibrate rates of molecular evolution, the completion of the Central American Isthmus more extensively than any other.  Recent studies have claimed that rather than the generally accepted date of ~3 million years ago (Ma), the Isthmus was effectively complete by the middle Miocene, 13 Ma.  We present a fossil calibrated phylogeny of the new world sand dollar genus Encope, based on one nuclear and four mitochondrial genes, calibrated with fossils at multiple nodes.  Present day distributions of Encope are likely the result of multiple range contractions and extinction events.  Most species are now endemic to a single region, but one widely distributed species in each ocean is composed of morphotypes previously described as separate species. The most recent separation between eastern Pacific and Caribbean extant clades occurred at 4.90 Ma, indicating that the Isthmus of Panama allowed genetic exchange until the Pliocene. The rate of evolution of mitochondrial genes in Encope has been ten times slower than in the closely related genera Mellita and Lanthonia.  This large difference in rates suggests that splits between eastern Pacific and Caribbean biota, dated on the assumption of a ?universal? mitochondrial DNA clock are not valid.}
}

Show RIS reference

TY - JOUR
ID - 27509
AU - Coppard,Simon E
AU - Lessios,H A
T1 - Phylogeography of the sand dollar genus Encope: implications regarding the Central American Isthmus and rates of molecular evolution
PY - 2017
KW - Encope
KW - Mellitidae
KW - speciation
KW - Isthmus of Panama
KW - Pliocene closure
KW - ecophenotypic variation
KW - slow rate of mtDNA evolution
UR - http://dx.doi.org/
N2 - Vicariant events have been widely used to calibrate rates of molecular evolution, the completion of the Central American Isthmus more extensively than any other. Recent studies have claimed that rather than the generally accepted date of ~3 million years ago (Ma), the Isthmus was effectively complete by the middle Miocene, 13 Ma. We present a fossil calibrated phylogeny of the new world sand dollar genus Encope, based on one nuclear and four mitochondrial genes, calibrated with fossils at multiple nodes. Present day distributions of Encope are likely the result of multiple range contractions and extinction events. Most species are now endemic to a single region, but one widely distributed species in each ocean is composed of morphotypes previously described as separate species. The most recent separation between eastern Pacific and Caribbean extant clades occurred at 4.90 Ma, indicating that the Isthmus of Panama allowed genetic exchange until the Pliocene. The rate of evolution of mitochondrial genes in Encope has been ten times slower than in the closely related genera Mellita and Lanthonia. This large difference in rates suggests that splits between eastern Pacific and Caribbean biota, dated on the assumption of a ?universal? mitochondrial DNA clock are not valid.
L3 -
JF - Scientific Reports
VL -
IS -
ER -