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Taxonomy and morphology of genus Scyliorhinus Blainville, 1816 (Chondrichthyes: Carcharhiniformes: Scyliorhinidae)

Grant number: 14/20316-5
Support type:Scholarships in Brazil - Doctorate
Effective date (Start): July 01, 2015
Effective date (End): September 15, 2018
Field of knowledge:Biological Sciences - Zoology - Taxonomy of Recent Groups
Principal Investigator:Mônica de Toledo-Piza Ragazzo
Grantee:Karla Diamantina de Araújo Soares
Home Institution: Instituto de Biociências (IB). Universidade de São Paulo (USP). São Paulo , SP, Brazil
Associated scholarship(s):16/22214-0 - Taxonomy and morphology of Northeastern Atlantic Scyliorhinus Blainville, 1816 (Chondrichthyes; Carcharhiniformes; Scyliorhinidae), BE.EP.DR   15/21314-9 - Taxonomy and morphology of Western central Atlantic Scyliorhinus Blainville, 1816 (Chondrichthyes; Carcharhiniformes; Scyliorhinidae), BE.EP.DR


The family Scyliorhinidae is the most diverse family of sharks with at least 16 genera and 160 species. Belonging to this family, the genus Scyliorhinus have 15 valid species, with varied color patterns and very similar external morphology. Such patterns are used extensively in taxonomic studies and identification of species of the genus; however, many questions are found in relation to the definition and interpretation of the enormous variation found in individuals of the same species and the distinction of apparently similar patterns in individuals of different species. Data on the lateral line canals, copulatory organs, skulls and other internal anatomical components are scarce, invalidating comparisons between species. Moreover, the definition of the genus presents inconsistencies, since a number of reallocations, redescriptions and sinonimizations of the nominal species is found in the literature. Due to the need for a broad morphological and taxonomic revision of the genus Scyliorhinus, this study aims to conduct an internal and external anatomical analysis of members of this genus, identifying the characters that define the taxon Scyliorhinus and describing the anatomical patterns, meristics and general and exclusive aspects of these species, suggesting synonyms, describing possible new species and elucidating morphological patterns that may eventually help build a phylogeny of the genus. (AU)

Scientific publications (6)
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
SOARES, KARLA D. A.; DE CARVALHO, MARCELO R. Phylogenetic relationship of catshark species of the genus Scyliorhinus (Chondrichthyes, Carcharhiniformes, Scyliorhinidae) based on comparative morphology. ZOOSYSTEMATICS AND EVOLUTION, v. 96, n. 2, p. 345-395, JUN 19 2020. Web of Science Citations: 0.
SOARES, KARLA D. A. Comparative anatomy of the clasper of catsharks and its phylogenetic implications (Chondrichthyes: Carcharhiniformes: Scyliorhinidae). Journal of Morphology, v. 281, n. 6, p. 591-607, JUN 2020. Web of Science Citations: 1.
SOARES, KARLA D. A. Sexually dimorphic body proportions in the catshark genus Scyliorhinus (Chondrichthyes: Carcharhiniformes: Scyliorhinidae). Journal of Fish Biology, v. 95, n. 2, p. 683-685, AUG 2019. Web of Science Citations: 0.
DE ARAUJO SOARES, KARLA DIAMANTINA; DE CARVALHO, MARCELO RODRIGUES; SCHWINGEL, PAULO RICARDO; FAZZANO GADIG, OTTO BISMARCK. A New Species of Parmaturus (Chondrichthyes: Carcharhiniformes: Scyliorhinidae) from Brazil, Southwestern Atlantic. Copeia, v. 107, n. 2, p. 314-322, JUN 2019. Web of Science Citations: 0.
SOARES, KARLA D. A.; DE CARVALHO, MARCELO R. The catshark genus Scyliorhinus (Chondrichthyes: Carcharhiniformes: Scyliorhinidae): taxonomy, morphology and distribution. Zootaxa, v. 4601, n. 1, p. 1-147, MAY 7 2019. Web of Science Citations: 0.
SOARES, KARLA D. A.; GOMES, ULISSES L.; DE CARVALHO, MARCELO R. Taxonomic review of catsharks of the Scyliorhinus haeckelii group, with the description of a new species (Chondrichthyes: Carcharhiniformes: Scyliorhinidae). Zootaxa, v. 4066, n. 5, p. 501-534, JAN 19 2016. Web of Science Citations: 3.
Academic Publications
(References retrieved automatically from State of São Paulo Research Institutions)
SOARES, Karla Diamantina de Araújo. Systematics of the genus Scyliorhinus Blainville, 1816 (Chondrichthyes: Carcharhiniformes: Scyliorhinidae). 2018. Doctoral Thesis - Universidade de São Paulo (USP). Instituto de Biociências São Paulo.

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