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Taxonomic analysis of the species of the family Squalidae Blainvillei, 1816 (Elasmobranchii: Chondrichthyes: Squaliformes) held at the ichthyology collection of the Natural History Museum (NHM)

Grant number: 13/11621-6
Support type:Scholarships abroad - Research Internship - Doctorate
Effective date (Start): September 01, 2013
Effective date (End): November 30, 2013
Field of knowledge:Biological Sciences - Zoology - Taxonomy of Recent Groups
Principal researcher:Marcelo Rodrigues de Carvalho
Grantee:Sarah Tházia Viana de Figueirêdo
Supervisor abroad: Ralf Britz
Home Institution: Instituto de Biociências (IB). Universidade de São Paulo (USP). São Paulo , SP, Brazil
Research place: Natural History Museum, London, England  
Associated to the scholarship:11/18861-7 - Taxonomic and morphological revision of the family Squalidae Blainville, 1816 (Elasmobranchii: Chondrichthyes: Squaliformes), BP.DR


The family Squalidae comprises two genera of sharks, Squalus and Cirrhigaleus, whose species have a complex taxonomy due to the difficulty of morphological distinction between them, associated to an uncertainty in relation to the application of many nominal species, calling up for a taxonomic revision. Therefore, a taxonomic revision of the family has been developed in order to globally delimitate the valid species, clinching the nomenclature of the nominal species for each genus. A morphological revision will provide efficient taxonomic characters for distinction among the recognized species through a detailed analysis of both external and skeletal morphology. Cranial and external measurements have been taken as well as dissections, clearing and staining, and radiographs have been achieved. At the present, 700 specimens of the family from the Northwestern and Southeastern Atlantic Northeastern and Southwestern Pacific and Indian Oceans were analyzed. Specimens from regions such as Mediterranean, Black and Red Seas as well as type specimens from the nominal species held in the European institutions were not yet investigated. The current proposal, which is related to my PhD project, aims to accomplish a research internship during three months at the Natural History Museum (NHM) in London in order to analyze comparatively relevant series of specimens of the genera and the type material held at the Ichthyology collection. Loan material will be requested besides short visits to other institutions in Europe may be achieved for obtaining more representation of the family. (AU)

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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, 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, SARAH T. DE F.; DE CARVALHO, MARCELO R. Redescription of Squalus acutipinnis Regan, 1908, a Valid Species of Spiny Dogfish from Southern Africa (Chondrichthyes: Squaliformes: Squalidae). Copeia, v. 104, n. 2, p. 539-553, JUL 2016. Web of Science Citations: 7.

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