CV Lattes
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Universidade Federal de São Carlos (UFSCAR). Centro de Ciências Biológicas e da Saúde (CCBS) (Institutional affiliation from the last research proposal) Birthplace: Brazil
Professor at the Department of Genetics and Evolution at the Federal University of São Carlos (UFSCar). Member and Coordinator of the CNPq Advisory Committee in the area of Genetics (CA-GE) and coordinator of the National Institute of Science and Technology for Biodiversity and Sustainable Use of Neotropical Fishes. Alumnus and member of the Alexander von Humboldt-Stiftung, member of the Editorial Board of 3 scientific journals and reviewer of >78 others. He has experience in the area of Genetics, with an emphasis on Animal Genetics, working mainly on the following topics: Molecular cytogenetics, Comparative Genomics, Biogeography and Evolution. More information about projects and lines of research can be accessed at www.lec.ufscar.br and www.inctpeixes.ufscar.br. ORCID: 0000-0003-4340-1464. Scopus Author ID: 25930310600. Contact: mbcioffi@ufscar.br / inctpeixes@ufscar.br. (Source: Lattes Curriculum)
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There has been a resurgence in the field of Cytogenetics by recent studies employing cutting-edge cytogenetic and modern genomic tools on a variety of organisms; the so-called Cytogenomic field. Although there are some laboratories of excellence in Brazil dedicated to the study of cytogenetics, almost none of them focus on all Vertebrate groups nowadays. We now represent one of the few la…
The present project aims to integrate cytogenetic and genomic approaches to elucidate the mechanisms of origin and differentiation of sex chromosomes and verify whether their differentiation pathways occurred following the canonical model of evolution. To do this, we will analyze nascent and differentiated BZZ@/ZW ; nascent BXX@/XY, @X1X1X2X2/BX1X2Y and @XX/BXY1Y2 systems, present in diff…
Meiosis is one of the fundamental features of eukaryotes, with its underlying mechanisms highly conserved across taxa. A crucial aspect of meiosis is chromosomal pairing, a complex and tightly regulated process that ensures homologous chromosomes align and recombine. This process is vital for genetic recombination and genomic reshuffling during gamete formation, leading to genetic diversi…
The evolution of sex chromosomes represents one of the most interesting topics in Evolutionary biology. The evolutionary dynamics of sex chromosomes have been revealed by recent studies employing cutting-edge cytogenetic and modern genomic tools on a variety of organisms; however, it is still not entirely clear how to best distinguish the distinct their functional evolution pathways in mo…
This project will continue the evolutionary analysis, which has been addressed in our previous projects approved by FAPESP. In this sense, problems that still need to be better understood will be addressed, covering biogeographic and species dispersion issues between different continents, the colonization routes, as well as the evolutionary consequences resulting from geographical isolati…
(Only some records are available in English at this moment)
This project aims to integrate cytogenetic and genomic analyzes to investigate the differentiation of the BZZ/@ZW sex chromosome system present in different vertebrate groups. For this, species of reptiles (the canine snake Spilotes pullatus, carrier of highly heteromorphic Z and W chromosomes) and birds (the emu Dromaius novaehollandiae, carrier of homomorphic Z and W chromosomes and in …
In South America, particularly in the Amazon region, two endemic species of the Osteoglossiformes order are found, the silver arowana (Osteoglossum bicirrhossum) and the black arowana (O. ferrerai), which diverged about 6 million years ago. While the silver arowana, occurs with a wide distribution in the Amazon and Orinoco basins, and the Rupununie and Oiapoque rivers (clear waters), the …
(Only some records are available in English at this moment)
This project aims to advance knowledge of the processes involved in the origin and differentiation of XX/XY and XY-derived systems of sex chromosomes considered atypical and of rare occurrence. For this purpose, were selected the insect (the beetle Omophoita octoguttata, carrier of giant XY sex chromosomes); the fish (the wolffish Hoplias malabaricus, carrier of an XY system where the X i…
Fish offer excellent conditions for analyzing the evolution of sex chromosomes, providing important subsidies for understanding this process among vertebrates as a whole. In particular, Erythrinidae fishes exhibit a broad spectrum of sex chromosome system mechanisms, ranging from nascent to highly differentiated, as well as single and multiple sex chromosome systems. Such variability in s…
The present project aims to integrate cytogenetic and genomic analyzes to investigate evolutionary processes that led to the differentiation of the XX/XY1Y2 sex chromosome system, which is rarer among vertebrates compared to other multiple sex chromosome systems. The isolation and characterization of the satellite DNA library (satellitome) will be carried out in representatives of all ver…
(Only some records are available in English at this moment)
This proposal will integrate cytogenetic and genomic approaches to explore the chromosomal rearrangements and the evolution of the multiple ¿X1X1X2X2/¿X1X2Y sex chromosome system in the Australian lizard species: Lialis burtonis (Pygopodidae; Squamata). Besides, we will also analyze a closely related species, Aprasia parapulchella with homologous XY sex chromosomes. We plan to collect th…
Understanding the genetic basis of adaptive traits is a key step to understanding adaptation, and the evolutionary process. Traits such as vision and color are excellent subjects for investigating adaptation, as they can directly impact an individual's ability to survive and reproduce. In South America, the two extant Osteoglossum species (Arowanas) offer a significant model for studying …
Anura represents the vertebrate group with the highest number of atypical multiple-sex chromosomes derived from sex-autosome translocations, which manifest as chain- or ring-shaped multivalents during meiosis. Such cases are observed in species from the genus Odorrana (Ranidae) and Leptodactylus (Leptodactylidae), despite having diverged at least 135 Mya. The Taiwanese frog Odorrana swinh…
(Only some records are available in English at this moment)
The student has been an undergraduate research fellow in our laboratory since 01/01/2022. In her first IC project, integrative analyses involving cytogenetics, genomics, and bioinformatics techniques in several Triportheus fish species were carried out, with a special focus on the evolution of their ZW sex chromosome system. As a result of these analyses, the article entitled "Following t…
The student is an undergraduate research fellow since 01/01/2023. In the first 12 months of his IC project, integrative analyzes involving cytogenetics, genomics, and bioinformatics techniques in the pale-breasted thrush Turdus leucomelas were carried out. As a result of these analyses, the article entitled "Breaking the Mold: A reciprocal autosomal translocation drives the evolution of t…
Seven months has been completed for the project named "Differentiation of the ZZ/ZW system of sex chromosomes: comparative analysis in species of reptiles and birds" (FAPESP 2022/12296-0). In this initial period, the satellitome of Dromaius novaehollandiae (emu) was characterized and in situ mapped on the emu's chromosomes and in two other phylogenetically related species. The achieved re…
(Only some records are available in English at this moment)
| 2 / 2 | Ongoing grants |
| 8 / 8 | Completed research grants |
| 6 / 6 | Ongoing scholarships in Brazil |
| 20 / 19 | Completed scholarships in Brazil |
| 4 / 4 | Ongoing scholarships abroad |
| 10 / 10 | Completed scholarships abroad |
| 50 / 49 | All research grants and scholarships |
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