Phylogenetic relationship of catshark species of the genus Scyliorhinus (Chondrichthyes, Carcharhiniformes, Scyliorhinidae) based on comparative morphology
The genus Scyliorhinus is part of the family Scyliorhinidae, the most diverse family of sharks and of the subfamily Scyliorhininae along with Cephaloscyllium and Poroderma. This study reviews the phylogenetic relationships of species of Scyliorhinus in the subfamily Scyliorhininae. S...
Main Authors: | , |
---|---|
Format: | Article |
Language: | English |
Published: |
Pensoft Publishers
2020-06-01
|
Series: | Zoosystematics and Evolution |
Online Access: | https://zse.pensoft.net/article/52420/download/pdf/ |
id |
doaj-3e28f753b605473c849bea20e0c3b47f |
---|---|
record_format |
Article |
spelling |
doaj-3e28f753b605473c849bea20e0c3b47f2020-11-25T02:15:59ZengPensoft PublishersZoosystematics and Evolution1860-07432020-06-0196234539510.3897/zse.96.5242052420Phylogenetic relationship of catshark species of the genus Scyliorhinus (Chondrichthyes, Carcharhiniformes, Scyliorhinidae) based on comparative morphologyKarla D. A. Soares0Marcelo R. de Carvalho1Universidade de São PauloUniversidade de São Paulo The genus Scyliorhinus is part of the family Scyliorhinidae, the most diverse family of sharks and of the subfamily Scyliorhininae along with Cephaloscyllium and Poroderma. This study reviews the phylogenetic relationships of species of Scyliorhinus in the subfamily Scyliorhininae. Specimens of all Scyliorhinus species were examined as well as specimens of four of the 18 species of Cephaloscyllium, two species of Poroderma, representatives of almost all other catshark (scyliorhinid) genera and one proscylliid (Proscyllium habereri). A detailed morphological study, including external and internal morphology, morphometry and meristic data, was performed. From this study, a total of 84 morphological characters were compiled into a data matrix. Parsimony analysis was employed to generate hypotheses of phylogenetic relationships using the TNT 1.1. Proscyllium habereri was used to root the cladogram. The phylogenetic analysis, based on implied weighting (k = 3; 300 replications and 100 trees saved per replication), resulted in three equally most parsimonious cladograms with 233 steps, with a CI of 0.37 and an RI of 0.69. The monophyly of the subfamily Scyliorhininae is supported as well as of the genus Scyliorhinus, which is proposed to be the sister group of Cephaloscyllium. The phylogenetic relationships amongst Scyliorhinus species are presented for the first time. https://zse.pensoft.net/article/52420/download/pdf/ |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Karla D. A. Soares Marcelo R. de Carvalho |
spellingShingle |
Karla D. A. Soares Marcelo R. de Carvalho Phylogenetic relationship of catshark species of the genus Scyliorhinus (Chondrichthyes, Carcharhiniformes, Scyliorhinidae) based on comparative morphology Zoosystematics and Evolution |
author_facet |
Karla D. A. Soares Marcelo R. de Carvalho |
author_sort |
Karla D. A. Soares |
title |
Phylogenetic relationship of catshark species of the genus Scyliorhinus (Chondrichthyes, Carcharhiniformes, Scyliorhinidae) based on comparative morphology |
title_short |
Phylogenetic relationship of catshark species of the genus Scyliorhinus (Chondrichthyes, Carcharhiniformes, Scyliorhinidae) based on comparative morphology |
title_full |
Phylogenetic relationship of catshark species of the genus Scyliorhinus (Chondrichthyes, Carcharhiniformes, Scyliorhinidae) based on comparative morphology |
title_fullStr |
Phylogenetic relationship of catshark species of the genus Scyliorhinus (Chondrichthyes, Carcharhiniformes, Scyliorhinidae) based on comparative morphology |
title_full_unstemmed |
Phylogenetic relationship of catshark species of the genus Scyliorhinus (Chondrichthyes, Carcharhiniformes, Scyliorhinidae) based on comparative morphology |
title_sort |
phylogenetic relationship of catshark species of the genus scyliorhinus (chondrichthyes, carcharhiniformes, scyliorhinidae) based on comparative morphology |
publisher |
Pensoft Publishers |
series |
Zoosystematics and Evolution |
issn |
1860-0743 |
publishDate |
2020-06-01 |
description |
The genus Scyliorhinus is part of the family Scyliorhinidae, the most diverse family of sharks and of the subfamily Scyliorhininae along with Cephaloscyllium and Poroderma. This study reviews the phylogenetic relationships of species of Scyliorhinus in the subfamily Scyliorhininae. Specimens of all Scyliorhinus species were examined as well as specimens of four of the 18 species of Cephaloscyllium, two species of Poroderma, representatives of almost all other catshark (scyliorhinid) genera and one proscylliid (Proscyllium habereri). A detailed morphological study, including external and internal morphology, morphometry and meristic data, was performed. From this study, a total of 84 morphological characters were compiled into a data matrix. Parsimony analysis was employed to generate hypotheses of phylogenetic relationships using the TNT 1.1. Proscyllium habereri was used to root the cladogram. The phylogenetic analysis, based on implied weighting (k = 3; 300 replications and 100 trees saved per replication), resulted in three equally most parsimonious cladograms with 233 steps, with a CI of 0.37 and an RI of 0.69. The monophyly of the subfamily Scyliorhininae is supported as well as of the genus Scyliorhinus, which is proposed to be the sister group of Cephaloscyllium. The phylogenetic relationships amongst Scyliorhinus species are presented for the first time. |
url |
https://zse.pensoft.net/article/52420/download/pdf/ |
work_keys_str_mv |
AT karladasoares phylogeneticrelationshipofcatsharkspeciesofthegenusscyliorhinuschondrichthyescarcharhiniformesscyliorhinidaebasedoncomparativemorphology AT marcelordecarvalho phylogeneticrelationshipofcatsharkspeciesofthegenusscyliorhinuschondrichthyescarcharhiniformesscyliorhinidaebasedoncomparativemorphology |
_version_ |
1724893584207904768 |