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Phylogeny of the tribe Tachymenini Bailey, 1967 (Serpentes, Dipsadidae, Xenodontinae)

Grant number: 12/13327-5
Support Opportunities:Scholarships in Brazil - Doctorate
Effective date (Start): November 01, 2012
Effective date (End): April 30, 2017
Field of knowledge:Biological Sciences - Zoology - Applied Zoology
Principal Investigator:Hussam El Dine Zaher
Grantee:Vivian Carlos Trevine
Host Institution: Museu de Zoologia (MZ). Universidade de São Paulo (USP). São Paulo , SP, Brazil
Associated research grant:11/50206-9 - Origin and evolution of snakes and their diversification in the Neotropics: a multidisciplinary approach, AP.BTA.TEM
Associated scholarship(s):15/08318-5 - Diversification of Thamnodynastes hypoconia and Thamnodynastes nattereri species complex within the tribe Tachymenini (Serpentes, Dipsadidae, Xenodontinae), BE.EP.DR


Caenophidia systematics ("advanced" snakes) has been impelled in recent years, coincidently with the development of molecular biology, resulting in crucial taxonomical changes for the group. Intra and intertribal evolutionary relationships of the Xenodontinae, and its association with other Dipsadidae, are incipient and the monophyly of several groups are yet instable. The current project addresses the study of the phylogenetic relationships among the members of the tribe Tachymenini (Dipsadidae, Xenodontinae) and its arrangement within Dipsadidae, one of the most representatives groups within Caeonophidia. Morphological and molecular data will be employed in order to compile a comprehensive set of information concerning the tribe's evolutionary relationships. The main objectives herein proposed are: 1) to test the hypothesis of relationship among Tachymenini members, for a better comprehension among genera relationships and to validate taxonomical changes; 2) to test the positioning of Tachymenini within the Xenodontinae. The phylogenetic relationships will be inferred through the analysis of morphological data and gene sampling from four mitochondrial and six nuclear genes. The analysis will be performed following the cladistics methodology and maximum parsimony as the phylogenetic inference method, in a comparative context with probabilistic methods. The assembled results will allow to infer a better resolution of evolutionary patterns from the Tachymenini, to elucidate the relationships between the Xenodontinae and, ultimately, will assist with the understanding of diversification patterns of Neotropical snakes. (AU)

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Scientific publications
(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)
NOBREGA, ROMULO PANTOJA; MONTINGELLI, GIOVANNA GONDIM; TREVINE, VIVIAN; FRANCO, FRANCISCO LUIS; VIEIRA, GUSTAVO H. C.; COSTA, GABRIEL C.; MESQUITA, DANIEL OLIVEIRA. Morphological variation within Thamnodynastes pallidus (Linnaeus, 1758) (Serpentes: Dipsadidae: Xenodontinae: Tachymenini). HERPETOLOGICAL JOURNAL, v. 26, n. 2, p. 165-174, . (11/50206-9, 12/13327-5)
FRANCO, FRANCISCO L.; TREVINE, VIVIAN C.; MONTINGELLI, GIOVANNA G.; ZAHER, HUSSAM. A new species of Thamnodynastes from the open areas of central and northeastern Brazil (Serpentes: Dipsadidae: Tachymenini). SALAMANDRA, v. 53, n. 3, p. 339-350, . (11/50206-9, 12/13327-5)
TREVINE, VIVIAN C.; CAICEDO-PORTILLA, JOSE RANCES; HOOGMOED, MARINUS; THOMAS, ROBERT A.; FRANCO, FRANCISCO L.; MONTINGELLI, GIOVANNA G.; OSORNO-MUNOZ, MARIELA; ZAHER, HUSSAM. new species of Thamnodynastes Wagler, 1830 from western Amazonia, with notes on morphology for members of the Thamnodynastes pallidus group (Serpentes, Dipsadidae, Tachymenini. Zootaxa, v. 4952, n. 2, p. 235-256, . (11/50206-9, 15/08318-5, 12/13327-5)
Academic Publications
(References retrieved automatically from State of São Paulo Research Institutions)
TREVINE, Vivian Carlos. Systematics of the tribe Tachymenini Bailey, 1967 (Serpentes, Dipsadidae, Xenodontinae). 2017. Doctoral Thesis - Universidade de São Paulo (USP). Instituto de Biociências (IBIOC/SB) São Paulo.

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