Phylogeography, colouration, and cryptic speciation across the Indo-Pacific in the sea urchin genus Echinothrix

Abstract The sea urchins Echinothrix calamaris and Echinothrix diadema have sympatric distributions throughout the Indo-Pacific. Diverse colour variation is reported in both species. To reconstruct the phylogeny of the genus and assess gene flow across the Indo-Pacific we sequenced mitochondrial 16S...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Simon E. Coppard, Holly Jessop, Harilaos A. Lessios
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/45d837e4e4d04c54b17fa732758e5f00
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:45d837e4e4d04c54b17fa732758e5f00
record_format	dspace
spelling	oai:doaj.org-article:45d837e4e4d04c54b17fa732758e5f002021-12-02T18:51:52ZPhylogeography, colouration, and cryptic speciation across the Indo-Pacific in the sea urchin genus Echinothrix10.1038/s41598-021-95872-02045-2322https://doaj.org/article/45d837e4e4d04c54b17fa732758e5f002021-08-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-95872-0https://doaj.org/toc/2045-2322Abstract The sea urchins Echinothrix calamaris and Echinothrix diadema have sympatric distributions throughout the Indo-Pacific. Diverse colour variation is reported in both species. To reconstruct the phylogeny of the genus and assess gene flow across the Indo-Pacific we sequenced mitochondrial 16S rDNA, ATPase-6, and ATPase-8, and nuclear 28S rDNA and the Calpain-7 intron. Our analyses revealed that E. diadema formed a single trans-Indo-Pacific clade, but E. calamaris contained three discrete clades. One clade was endemic to the Red Sea and the Gulf of Oman. A second clade occurred from Malaysia in the West to Moorea in the East. A third clade of E. calamaris was distributed across the entire Indo-Pacific biogeographic region. A fossil calibrated phylogeny revealed that the ancestor of E. diadema diverged from the ancestor of E. calamaris ~ 16.8 million years ago (Ma), and that the ancestor of the trans-Indo-Pacific clade and Red Sea and Gulf of Oman clade split from the western and central Pacific clade ~ 9.8 Ma. Time since divergence and genetic distances suggested species level differentiation among clades of E. calamaris. Colour variation was extensive in E. calamaris, but not clade or locality specific. There was little colour polymorphism in E. diadema.Simon E. CoppardHolly JessopHarilaos A. LessiosNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-17 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Simon E. Coppard Holly Jessop Harilaos A. Lessios Phylogeography, colouration, and cryptic speciation across the Indo-Pacific in the sea urchin genus Echinothrix
description	Abstract The sea urchins Echinothrix calamaris and Echinothrix diadema have sympatric distributions throughout the Indo-Pacific. Diverse colour variation is reported in both species. To reconstruct the phylogeny of the genus and assess gene flow across the Indo-Pacific we sequenced mitochondrial 16S rDNA, ATPase-6, and ATPase-8, and nuclear 28S rDNA and the Calpain-7 intron. Our analyses revealed that E. diadema formed a single trans-Indo-Pacific clade, but E. calamaris contained three discrete clades. One clade was endemic to the Red Sea and the Gulf of Oman. A second clade occurred from Malaysia in the West to Moorea in the East. A third clade of E. calamaris was distributed across the entire Indo-Pacific biogeographic region. A fossil calibrated phylogeny revealed that the ancestor of E. diadema diverged from the ancestor of E. calamaris ~ 16.8 million years ago (Ma), and that the ancestor of the trans-Indo-Pacific clade and Red Sea and Gulf of Oman clade split from the western and central Pacific clade ~ 9.8 Ma. Time since divergence and genetic distances suggested species level differentiation among clades of E. calamaris. Colour variation was extensive in E. calamaris, but not clade or locality specific. There was little colour polymorphism in E. diadema.
format	article
author	Simon E. Coppard Holly Jessop Harilaos A. Lessios
author_facet	Simon E. Coppard Holly Jessop Harilaos A. Lessios
author_sort	Simon E. Coppard
title	Phylogeography, colouration, and cryptic speciation across the Indo-Pacific in the sea urchin genus Echinothrix
title_short	Phylogeography, colouration, and cryptic speciation across the Indo-Pacific in the sea urchin genus Echinothrix
title_full	Phylogeography, colouration, and cryptic speciation across the Indo-Pacific in the sea urchin genus Echinothrix
title_fullStr	Phylogeography, colouration, and cryptic speciation across the Indo-Pacific in the sea urchin genus Echinothrix
title_full_unstemmed	Phylogeography, colouration, and cryptic speciation across the Indo-Pacific in the sea urchin genus Echinothrix
title_sort	phylogeography, colouration, and cryptic speciation across the indo-pacific in the sea urchin genus echinothrix
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/45d837e4e4d04c54b17fa732758e5f00
work_keys_str_mv	AT simonecoppard phylogeographycolourationandcrypticspeciationacrosstheindopacificintheseaurchingenusechinothrix AT hollyjessop phylogeographycolourationandcrypticspeciationacrosstheindopacificintheseaurchingenusechinothrix AT harilaosalessios phylogeographycolourationandcrypticspeciationacrosstheindopacificintheseaurchingenusechinothrix
_version_	1718377381478006784

Phylogeography, colouration, and cryptic speciation across the Indo-Pacific in the sea urchin genus Echinothrix

Ejemplares similares