Giant Mesozoic coelacanths (Osteichthyes, Actinistia) reveal high body size disparity decoupled from taxic diversity

Abstract The positive correlation between speciation rates and morphological evolution expressed by body size is a macroevolutionary trait of vertebrates. Although taxic diversification and morphological evolution are slow in coelacanths, their fossil record indicates that large and small species co...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Lionel Cavin, André Piuz, Christophe Ferrante, Guillaume Guinot
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/22d354ddcafe4fbf9cde72344522d6b9
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:22d354ddcafe4fbf9cde72344522d6b9
record_format	dspace
spelling	oai:doaj.org-article:22d354ddcafe4fbf9cde72344522d6b92021-12-02T18:25:02ZGiant Mesozoic coelacanths (Osteichthyes, Actinistia) reveal high body size disparity decoupled from taxic diversity10.1038/s41598-021-90962-52045-2322https://doaj.org/article/22d354ddcafe4fbf9cde72344522d6b92021-06-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-90962-5https://doaj.org/toc/2045-2322Abstract The positive correlation between speciation rates and morphological evolution expressed by body size is a macroevolutionary trait of vertebrates. Although taxic diversification and morphological evolution are slow in coelacanths, their fossil record indicates that large and small species coexisted, which calls into question the link between morphological and body size disparities. Here, we describe and reassess fossils of giant coelacanths. Two genera reached up to 5 m long, placing them among the ten largest bony fish that ever lived. The disparity in body size adjusted to taxic diversity is much greater in coelacanths than in ray-finned fishes. Previous studies have shown that rates of speciation and rates of morphological evolution are overall low in this group, and our results indicate that these parameters are decoupled from the disparity in body size in coelacanths. Genomic and physiological characteristics of the extant Latimeria may reflect how the extinct relatives grew to such a large size. These characteristics highlight new evolutionary traits specific to these “living fossils”.Lionel CavinAndré PiuzChristophe FerranteGuillaume GuinotNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-13 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Lionel Cavin André Piuz Christophe Ferrante Guillaume Guinot Giant Mesozoic coelacanths (Osteichthyes, Actinistia) reveal high body size disparity decoupled from taxic diversity
description	Abstract The positive correlation between speciation rates and morphological evolution expressed by body size is a macroevolutionary trait of vertebrates. Although taxic diversification and morphological evolution are slow in coelacanths, their fossil record indicates that large and small species coexisted, which calls into question the link between morphological and body size disparities. Here, we describe and reassess fossils of giant coelacanths. Two genera reached up to 5 m long, placing them among the ten largest bony fish that ever lived. The disparity in body size adjusted to taxic diversity is much greater in coelacanths than in ray-finned fishes. Previous studies have shown that rates of speciation and rates of morphological evolution are overall low in this group, and our results indicate that these parameters are decoupled from the disparity in body size in coelacanths. Genomic and physiological characteristics of the extant Latimeria may reflect how the extinct relatives grew to such a large size. These characteristics highlight new evolutionary traits specific to these “living fossils”.
format	article
author	Lionel Cavin André Piuz Christophe Ferrante Guillaume Guinot
author_facet	Lionel Cavin André Piuz Christophe Ferrante Guillaume Guinot
author_sort	Lionel Cavin
title	Giant Mesozoic coelacanths (Osteichthyes, Actinistia) reveal high body size disparity decoupled from taxic diversity
title_short	Giant Mesozoic coelacanths (Osteichthyes, Actinistia) reveal high body size disparity decoupled from taxic diversity
title_full	Giant Mesozoic coelacanths (Osteichthyes, Actinistia) reveal high body size disparity decoupled from taxic diversity
title_fullStr	Giant Mesozoic coelacanths (Osteichthyes, Actinistia) reveal high body size disparity decoupled from taxic diversity
title_full_unstemmed	Giant Mesozoic coelacanths (Osteichthyes, Actinistia) reveal high body size disparity decoupled from taxic diversity
title_sort	giant mesozoic coelacanths (osteichthyes, actinistia) reveal high body size disparity decoupled from taxic diversity
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/22d354ddcafe4fbf9cde72344522d6b9
work_keys_str_mv	AT lionelcavin giantmesozoiccoelacanthsosteichthyesactinistiarevealhighbodysizedisparitydecoupledfromtaxicdiversity AT andrepiuz giantmesozoiccoelacanthsosteichthyesactinistiarevealhighbodysizedisparitydecoupledfromtaxicdiversity AT christopheferrante giantmesozoiccoelacanthsosteichthyesactinistiarevealhighbodysizedisparitydecoupledfromtaxicdiversity AT guillaumeguinot giantmesozoiccoelacanthsosteichthyesactinistiarevealhighbodysizedisparitydecoupledfromtaxicdiversity
_version_	1718378027915673600

Giant Mesozoic coelacanths (Osteichthyes, Actinistia) reveal high body size disparity decoupled from taxic diversity

Ejemplares similares