Tip-dated phylogeny of whirligig beetles reveals ancient lineage surviving on Madagascar

Abstract The temporal origin of Madagascar’s extraordinary endemic diversity is debated. A preference for Cenozoic dispersal origins has replaced the classical view of Mesozoic vicariance in the wake of molecular dating. However, evidence of ancient origins is mounting from arthropod groups. Using p...

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Autores principales:	Grey T. Gustafson, Alexander A. Prokin, Rasa Bukontaite, Johannes Bergsten, Kelly B. Miller
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/1bd42db69ba740e3b857e279b93bdcf9
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spelling	oai:doaj.org-article:1bd42db69ba740e3b857e279b93bdcf92021-12-02T15:05:45ZTip-dated phylogeny of whirligig beetles reveals ancient lineage surviving on Madagascar10.1038/s41598-017-08403-12045-2322https://doaj.org/article/1bd42db69ba740e3b857e279b93bdcf92017-08-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-08403-1https://doaj.org/toc/2045-2322Abstract The temporal origin of Madagascar’s extraordinary endemic diversity is debated. A preference for Cenozoic dispersal origins has replaced the classical view of Mesozoic vicariance in the wake of molecular dating. However, evidence of ancient origins is mounting from arthropod groups. Using phylogenetic ‘tip-dating’ analysis with fossils, we show that a whirligig beetle species, Heterogyrus milloti, inhabiting forest streams in southeastern Madagascar is the last survivor of a once dominant and widespread Mesozoic group. With a Late Triassic to Early Jurassic origin (226–187 Ma) it is the hitherto oldest dated endemic lineage of animal or plant on Madagascar. Island biotas’ sensitivity to extinction is well known, but islands can also provide refuge from continental extinction. Heterogyrus milloti is an irreplaceable link to the freshwater biota of the Mesozoic and serves as a reminder of what may be lost without critical conservation efforts on Madagascar.Grey T. GustafsonAlexander A. ProkinRasa BukontaiteJohannes BergstenKelly B. MillerNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-9 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Grey T. Gustafson Alexander A. Prokin Rasa Bukontaite Johannes Bergsten Kelly B. Miller Tip-dated phylogeny of whirligig beetles reveals ancient lineage surviving on Madagascar
description	Abstract The temporal origin of Madagascar’s extraordinary endemic diversity is debated. A preference for Cenozoic dispersal origins has replaced the classical view of Mesozoic vicariance in the wake of molecular dating. However, evidence of ancient origins is mounting from arthropod groups. Using phylogenetic ‘tip-dating’ analysis with fossils, we show that a whirligig beetle species, Heterogyrus milloti, inhabiting forest streams in southeastern Madagascar is the last survivor of a once dominant and widespread Mesozoic group. With a Late Triassic to Early Jurassic origin (226–187 Ma) it is the hitherto oldest dated endemic lineage of animal or plant on Madagascar. Island biotas’ sensitivity to extinction is well known, but islands can also provide refuge from continental extinction. Heterogyrus milloti is an irreplaceable link to the freshwater biota of the Mesozoic and serves as a reminder of what may be lost without critical conservation efforts on Madagascar.
format	article
author	Grey T. Gustafson Alexander A. Prokin Rasa Bukontaite Johannes Bergsten Kelly B. Miller
author_facet	Grey T. Gustafson Alexander A. Prokin Rasa Bukontaite Johannes Bergsten Kelly B. Miller
author_sort	Grey T. Gustafson
title	Tip-dated phylogeny of whirligig beetles reveals ancient lineage surviving on Madagascar
title_short	Tip-dated phylogeny of whirligig beetles reveals ancient lineage surviving on Madagascar
title_full	Tip-dated phylogeny of whirligig beetles reveals ancient lineage surviving on Madagascar
title_fullStr	Tip-dated phylogeny of whirligig beetles reveals ancient lineage surviving on Madagascar
title_full_unstemmed	Tip-dated phylogeny of whirligig beetles reveals ancient lineage surviving on Madagascar
title_sort	tip-dated phylogeny of whirligig beetles reveals ancient lineage surviving on madagascar
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/1bd42db69ba740e3b857e279b93bdcf9
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Tip-dated phylogeny of whirligig beetles reveals ancient lineage surviving on Madagascar

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