ArticleScientific reports2017
Phylogeography of the sand dollar genus Encope: implications regarding the Central American Isthmus and rates of molecular evolution.
Article in Scientific reports, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.
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8 citing papers in PubMed, 24 citations in OpenAlex.
- Article
- Article
- Phylogeny, ancestral ranges and reclassification of sand dollars.Scientific reports · 2023Article
- Mitochondrial phylogeny of the brittle star genus Ophioderma.Scientific reports · 2022Article
- Phylogenomic analyses of echinoid diversification prompt a re-evaluation of their fossil record.eLife · 2022Article
- Article
- Protoconch enlargement in Western Atlantic turritelline gastropod species following the closure of the Central American Seaway.Ecology and evolution · 2019Article
- A phylogenomic resolution of the sea urchin tree of life.BMC evolutionary biology · 2018Article
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Authors and funding
2 authors at 1 institution in 1 country.
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No grant is acknowledged in the PubMed record.
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.
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