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Taxonomic revision of species of the family Squalidae Blainville, 1816 (Elasmobranchii: Chondrichthyes: Squaliformes) from Southern Africa

Grant number: 14/26503-1
Support type:Scholarships abroad - Research Internship - Doctorate
Effective date (Start): March 02, 2015
Effective date (End): October 01, 2015
Field of knowledge:Biological Sciences - Zoology - Taxonomy of Recent Groups
Principal Investigator:Marcelo Rodrigues de Carvalho
Grantee:Sarah Tházia Viana de Figueirêdo
Supervisor abroad: Ofer Gon
Home Institution: Instituto de Biociências (IB). Universidade de São Paulo (USP). São Paulo , SP, Brazil
Local de pesquisa : National Research Foundation (NRF), South Africa  
Associated to the scholarship:11/18861-7 - Taxonomic and morphological revision of the family Squalidae Blainville, 1816 (Elasmobranchii: Chondrichthyes: Squaliformes), BP.DR

Abstract

Squalidae comprises two genera of sharks, Squalus and Cirrhigaleus, whose species have a complex taxonomy due to the difficulty of morphological distinction, associated to an uncertainty in relation to the application of many nominal species, calling for a taxonomic revision. Therefore, a worldwide taxonomic revision of the family is being developed in order to delimit valid species, resolving the status of the nominal species available in each genus. The objective of this study is to provide efficient taxonomic characters for distinguishing among valid species, through a detailed analysis of both external and skeletal morphology. Cranial and external measurements are being taken, along with dissections and radiographs in order to obtain new morphological subsidies for differentiating species. Results will be compared with recent molecular systematic analysis. The waters surrounding the Southern Africa have been shown to be a region of great diversity of the family with four potentially new species of Squalus discovered in this PhD project. However, a broader morphological comparative analysis of specimens from this region needs to be achieved for providing an adequate morphological description for the valid species, describe the new species, and implement the new nomenclature in a global context. The current proposal, which is related to the ongoing PhD project, aims to achieve a seven month research internship at the South African Institute of Aquatic Biodiversity (SAIAB) in South Africa in order to analyze specimens of Squalidae from Southern Africa. Specimens will be requested on loan from and short visits to other institutions may be undertaken to increase the amount of material sampled from the region. (AU)

Scientific publications (4)
(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)
VIANA, SARAH T. F. L.; DE CARVALHO, MARCELO R. Squalus shiraii sp. nov. (Squaliformes, Squalidae), a new species of dogfish shark from Japan with regional nominal species revisited. ZOOSYSTEMATICS AND EVOLUTION, v. 96, n. 2, p. 275-311, JUN 10 2020. Web of Science Citations: 0.
VIANA, SARAH T. DE F. L.; LISHER, MARK W.; DE CARVALHO, MARCELO R. Two new species of short-snouted dogfish sharks of the genus Squalus Linnaeus, 1758, from southern Africa (Chondrichthyes: Squaliformes: Squalidae). MARINE BIODIVERSITY, v. 48, n. 4, p. 1787-1814, DEC 2018. Web of Science Citations: 4.
VIANA, S. T. F. L.; DE CARVALHO, M. R. Resurrection and Redescription of the Southern Dogfish Squalus probatovi (Squalidae), a Valid Species from Angola. JOURNAL OF ICHTHYOLOGY, v. 58, n. 5, p. 617-632, SEP 2018. Web of Science Citations: 1.
VIANA, S. T. DE. F. L.; DE CARVALHO, M. R.; EBERT, D. A. Squalus bassi sp nov., a new long-snouted spurdog (Chondrichthyes: Squaliformes: Squalidae) from the Agulhas Bank. Journal of Fish Biology, v. 91, n. 4, p. 1178-1207, OCT 2017. Web of Science Citations: 3.

Please report errors in scientific publications list by writing to: cdi@fapesp.br.