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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Phylogenetic significance of clasper morphology of electric rays (Chondrichthyes: Batoidea: Torpediniformes)

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Author(s):
Moreira, Renan A. [1] ; de Carvalho, Marcelo R. [1]
Total Authors: 2
Affiliation:
[1] Univ Sao Paulo, Dept Zool, Inst Biociencias, Rua Matao, Trav 14, 101, BR-05508090 Sao Paulo, SP - Brazil
Total Affiliations: 1
Document type: Journal article
Source: Journal of Morphology; v. 282, n. 3 JAN 2021.
Web of Science Citations: 0
Abstract

Torpediniformes (electric rays) is a monophyletic group strongly supported by morphological and molecular phylogenetic studies. The claspers of electric rays, however, are poorly documented in comparation to the clasper of other batoids, especially skates, and the knowledge of their anatomical variation is restricted to the description of a few species. The present article analyzes the external and skeletal clasper anatomy of electric rays and reports newly discovered characters that can be useful for taxonomic diagnoses and higher-level systematic studies. The family Torpedinidae exclusively presents the integumental flap, a poorly calcified clasper skeleton, and a dorsal marginal cartilage with a medial flange on its distal portion. Derived or diagnostic characters were not found in the clasper of the reportedly nonmonophyletic families Narcinidae and Narkidae; however, the claspers of species and genera of narcinids and narkids present different anatomical patterns that can be useful for taxonomic and phylogenetic studies. (AU)

FAPESP's process: 13/12434-5 - Comparative morphology and importance systematic of the mixopterigium of Batoidea (Chondrichthyes: Elasmobranchii)
Grantee:Renan Andrade Moreira
Support Opportunities: Scholarships in Brazil - Doctorate