Evolutionary history of Drosophila serido ("cluster" Drosophila buzzatii)

• Grant number: 11/10499-7
• Support Opportunities: Scholarships in Brazil - Doctorate
• Start date until: September 01, 2011
• End date until: February 28, 2015
• Field of knowledge: Biological Sciences - Genetics
• Principal Investigator: Maura Helena Manfrin
• Grantee: Taís Carmona Lavagnini-Pizzo
• Host Institution: Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto (FFCLRP). Universidade de São Paulo (USP). Ribeirão Preto , SP, Brazil

Abstract

Drosophila cactophilic species, as those that belong to Drosophila buzzatii cluster, have close ecological relationship with species of the Cactaceae family, vegetation very common in the Seasonally Tropical Dry Forest (STDF). There are evidences that the climatic fluctuations of the Quaternary influence the STDF distribution, which suffered processes of expansion and contraction of its range, influencing the demographic aspects and gene flow among populations of the Drosophila species. Drosophila serido has been characterized by different markers as a polytypic species, and can be divided in two distinct groups, Northeast and Coast populations. It is probably that these groups observed are related with the processes of expansion and contraction of xerophytic vegetation during the Quaternary. Trying to understand the population structure of D. serido and the phylogeographic processes that influenced its distribution, will be done multilocus analysis (nuclear genes period and GstD1, mitochondrial gene COI) and the species distribution modeling. This approaches will allow: (1) a wide evaluation about the influence of paleoclimatic and ecological events in the history of D. serido populations; (2) inferences about the dispersal routes, colonization and isolation of the coast populations from its dispersal center; (3) verify the taxonomic status of its populations considering the Northeast and Coast division.; (4) re-evaluate, considering the selected markers, the hypothesis that the dispersal center of this populations is the Chapada Diamantina, and (5) discuss about the demographic and historic processes on the STDF domain and its historic relations with other domains in the Brazilian territory.

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)

FRANCO, FERNANDO F.; LAVAGNINI, TAIS C.; SENE, FABIO M.; MANFRIN, MAURA H.. Mito-nuclear discordance with evidence of shared ancestral polymorphism and selection in cactophilic species of Drosophila. Biological Journal of the Linnean Society, v. 116, n. 1, p. 197-210, SEP 2015. (11/10499-7, 10/19557-7)

Academic Publications

(References retrieved automatically from State of São Paulo Research Institutions)

LAVAGNINI-PIZZO, Taís Carmona. Evolutionary history of Drosophila serido (\cluster\ Drosophila buzzatii). 2015. Doctoral Thesis - Universidade de São Paulo (USP). Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto (PCARP/BC) Ribeirão Preto.