Please use this identifier to cite or link to this item: https://hdl.handle.net/10216/120267
Author(s): Amaral C.R.L.
Pereira F.
Silva D.A.
Amorim A.
de Carvalho E.F.
Title: The mitogenomic phylogeny of the Elasmobranchii (Chondrichthyes)
Publisher: Taylor & Francis
Issue Date: 2018
Abstract: Here we present a mitogenomic perspective on the evolution of sharks and rays, being a first glance on the complete mitochondrial history of such an old and diversified group of vertebrates. The Elasmobranchii is a diverse subclass of Chondrichthyes, or cartilaginous fish, with about 1200 species of ocean- and freshwater-dwelling fishes spread all over the world’s seas, including some of the ocean’s largest fishes. The group dates back about 400 million years near the Devonian–Silurian boundary, being nowadays represented by several derivative lineages, mainly related to Mesozoic forms. Although considered of ecological, commercial and conservation importance, the phylogeny of this old group is poorly studied and still under debate. Here we apply a molecular systematic approach on 82 complete mitochondrial genomes to investigate the phylogeny of the Elasmobranchii. By using maximum likelihood (ML) and Bayesian analyses, we found a clear separation within the shark clade between the Galeomorphii and the Squalomorphii, as well as sister taxa relationships between the Carcharhiniformes and the Lamniformes. Moreover, we found that Pristoidei clusters within the Rhinobatoidei, having been recovered as the sister taxon of the Rhinobatos genus in a clade which also includes the basal Zapteryx. Our results also reject the Hypnosqualea hypothesis, which proposes that the Batoidea should be placed within the Selachii. © 2017, © 2017 Informa UK Limited, trading as Taylor & Francis Group.
Subject: mitochondrial DNA
Article
Bayes theorem
bootstrapping
Callorhinchus callorynchus
Carcharhiniformes
Chimaera monstrosa
codon
DNA barcoding
elasmobranch
Galeomorphii
Lamniformes
maximum likelihood method
membrane structure
mitochondrial genome
mitogenomics
molecular genetics
nonhuman
phylogeny
priority journal
Pristoidei
Rhinobatoidei
shark
signal noise ratio
Squalomorphii
taxonomy
animal
classification
endangered species
fish
genetics
mitochondrial genome
species differentiation
Animals
Endangered Species
Fishes
Genetic Speciation
Genome, Mitochondrial
Phylogeny
URI: https://hdl.handle.net/10216/120267
Source: Mitochondrial DNA Part A: DNA Mapping, Sequencing, and Analysis, vol. 29(6), p. 867-878
Document Type: Artigo em Revista Científica Internacional
Rights: restrictedAccess
Appears in Collections:CIIMAR - Artigo em Revista Científica Internacional

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