Cytogenetic studies on genus Oligoryzomys (Sigmodontinae, Rodentia)

• Grant number: 08/00493-9
• Support Opportunities: Scholarships in Brazil - Scientific Initiation
• Start date until: April 01, 2008
• End date until: November 30, 2009
• Field of knowledge: Biological Sciences - Genetics - Animal Genetics
• Principal Investigator: Maria José de Jesus Silva
• Grantee: Camilla Bruno Di Nizo
• Host Institution: Instituto Butantan. Secretaria da Saúde (São Paulo - Estado). São Paulo , SP, Brazil
• Associated research grant: 05/04557-3 - Cytogenetic and molecular studies on neotropical small rodents from Brazil, AP.JP

Abstract

Rodentia, the largest order of living Mammalia, encompasses about 42% of worldwide mammalian biodiversity. Rodents show a widely geographic distribution and a remarkable diversity, and that is why it is quite difficult to achieve the systematic and phylogeny of the group in different hierarchical levels (since species, genera, tribes, subfamilies and families). Oligoryzomys, from the tribe Oryzomyini, was firstly considered as a subgenus of the previous genus Oryzomys and presents a controvertible number of species (from one to 30) and many new species still have been reported in the last years. Since 1970, cytogenetic studies on rodents have been increased essentially because of the main following three points: the advent of coloration techniques; interest in karyotypic differentiation and chromosomal evolution approaches; and karyological data (which can be useful) as an important marker for species diagnosis. The main goal of this project is to characterize cytogenetically Brazilian species of the genus Oligoryzomys, and, in association with other approaches, to contribute to the citotaxonomy and studies of chromosomal evolution of the group.

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)

DI-NIZO, CAMILLA BRUNO; NEVES, CAROLINA LIMA; VILELA, JULIO FERNANDO; SILVA, MARIA JOSE DE J.. New karyologycal data and cytotaxonomic considerations on small mammals from Santa Virginia (Parque Estadual da Serra do Mar, Atlantic Forest, Brazil). COMPARATIVE CYTOGENETICS, v. 8, n. 1, p. 11-30, 2014. (07/03392-6, 05/04557-3, 10/03432-0, 08/00493-9)

SUAREZ-VILLOTA, ELKIN Y.; DI-NIZO, CAMILLA B.; NEVES, CAROLINA L.; DE JESUS SILVA, MARIA JOSE. First cytogenetic information for Drymoreomys albimaculatus (Rodentia, Cricetidae), a recently described genus from Brazilian Atlantic Forest. ZOOKEYS, v. N/A, n. 303, p. 12-pg., 2013-01-01. (10/03432-0, 08/00493-9, 05/04557-3)

SUAREZ-VILLOTA, ELKIN Y.; DI-NIZO, CAMILLA B.; NEVES, CAROLINA L.; DE JESUS SILVA, MARIA JOSE. First cytogenetic information for Drymoreomys albimaculatus (Rodentia, Cricetidae), a recently described genus from Brazilian Atlantic Forest. ZOOKEYS, n. 303, p. 65-76, 2013. (05/04557-3, 10/03432-0, 08/00493-9)