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Evolution of the skeletal musculature of the Gymnotiformes (Teleostei: Ostariophysi)

Grant number: 18/05084-1
Support type:Scholarships in Brazil - Post-Doctorate
Effective date (Start): June 01, 2018
Effective date (End): July 31, 2021
Field of knowledge:Biological Sciences - Zoology - Taxonomy of Recent Groups
Principal researcher:Aléssio Datovo da Silva
Grantee:Luiz Antonio Wanderley Peixoto
Home Institution: Museu de Zoologia (MZ). Universidade de São Paulo (USP). São Paulo , SP, Brazil
Associated research grant:16/19075-9 - Diversity and evolution of Gymnotiformes (Teleostei, Ostariophysi), AP.TEM
Associated scholarship(s):19/26594-0 - The higher-level phylogenetics of Gymnotiformes (Teleostei: Ostariophysi) based on morphological evidence, BE.EP.PD


Despite constituting valuable source of phylogenetic information, skeletal musculature in the Gymnotiformes has been poorly explored by systematists. Less than 2% of all morphological characters employed in the major phylogenetic analyses with the order derive from the myology. All remaining publications on the musculature of the Gymnotiformes are primarily descriptive and include only a few cranial muscles surveyed in less than a dozen species. The present project aims the study of the facial, gular, branchial, body, and fin musculature in a broad range of gymnotiform representatives. This approach will allow a better understanding of the evolution of the main muscular complexes across the order and their implications for the gymnotiform phylogeny. Studies concerning comparative myology and cladistic analyses within the Gymnotiformes are planned to be published in high impact journals.

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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)
PEIXOTO, LUIZ A. W.; PASTANA, MURILO N. L.; BALLEN, GUSTAVO A. New species of glass knifefish genus Eigenmannia (Gymnotiformes: Sternopygidae) with comments on the morphology and function of the enlarged cephalic lateral-line canals of Sternopygidae. Journal of Fish Biology, v. 98, n. 1, p. 142-153, JAN 2021. Web of Science Citations: 0.
PEIXOTO, LUIZ ANTONIO WANDERLEY; DATOVO, ALESSIO; MENEZES, NAERCIO AQUINO; DE SANTANA, CARLOS DAVID. A new species of sexually dimorphic and rheophilic ghost knifefish (Apteronotidae: Gymnotiformes) from the Amazon basin. Journal of Fish Biology, JAN 2021. Web of Science Citations: 0.
GUILHERME M. DUTRA; TIAGO M. S. FREITAS; BRUNO S. PRUDENTE; GILBERTO N. SALVADOR; MANUELA D. V. LEÃO; LUIZ A. W. PEIXOTO; MARINA B. MENDONÇA; ANDRÉ L. NETTO-FERREIRA; FABIO R. SILVA; LUCIANO F. A. MONTAG; WOLMAR B. WOSIACKI. Rapid assessment of the ichthyofauna of the southern Guiana Shield tributaries of the Amazonas River in Pará, Brazil. Acta Amazonica, v. 50, n. 1, p. 24-36, Mar. 2020.
DUTRA, GUILHERME M.; FREITAS, TIAGO M. S.; PRUDENTE, BRUNO S.; SALVADOR, GILBERTO N.; LEAO, V, MANUELA D.; PEIXOTO, LUIZ A. W.; MENDONCA, MARINA B.; NETTO-FERREIRA, ANDRE L.; SILVA, FABIO R.; MONTAG, LUCIANO F. A.; WOSIACKI, WOLMAR B. Rapid assessment of the ichthyofauna of the southern Guiana Shield tributaries of the Amazonas River in Para, Brazil. Acta Amazonica, v. 50, n. 1, p. 24+, JAN-MAR 2020. Web of Science Citations: 2.
PEIXOTO, LUIZ A. W.; DATOVO, ALESSIO; CAMPOS-DA-PAZ, RICARDO; DE SANTANA, CARLOS D.; MENEZES, NAERCIO A. Anatomical, taxonomic, and phylogenetic reappraisal of a poorly known ghost knifefish, Tembeassu marauna (Ostariophysi: Gymnotiformes), using X-ray microcomputed tomography. PLoS One, v. 14, n. 11 NOV 27 2019. Web of Science Citations: 0.

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