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Systematics of the genus Nectomys Peters, 1860 (Cricetidae, Sigmodontinae)

Grant number: 10/18846-5
Support Opportunities:Scholarships in Brazil - Doctorate
Effective date (Start): March 01, 2011
Effective date (End): June 30, 2015
Field of knowledge:Biological Sciences - Zoology - Taxonomy of Recent Groups
Principal Investigator:Alexandre Reis Percequillo
Grantee:Elisandra de Almeida Chiquito
Host Institution: Escola Superior de Agricultura Luiz de Queiroz (ESALQ). Universidade de São Paulo (USP). Piracicaba , SP, Brazil
Associated research grant:09/16009-1 - Systematics, evolution and diversification of the subfamily Sigmodontinae in South America: the tribe Oryzomyini, AP.JP
Associated scholarship(s):12/03381-2 - The genus Nectomys Peters, 1860 (Cricetidae: Sigmodontinae): analysis of specimens from North American institutions, BE.EP.DR


Oryzomyini is the most diverse and widely distributed tribe within the subfamily Sigmodontinae. The species have terrestrial, scansorial, arboreal and even semi-aquatic habits, as the genus Nectomys. The tribe diversity is growing up substantially during the last years due to new taxa descriptions and, therefore, is feasible to assume that there is still a good deal of diversity to be properly described, cataloged and mapped. The genus Nectomys (Cricetidae, Sigmodontinae) presents a taxonomy full of nomenclatural problems, and the phylogenetic relationships between its species remain unknown. The justification of this study is based on the importance of the species delimitation and in the significance of understanding the processes responsible for the diversity generation, so that, in the future, applied studies can be able to delineate conservation strategies, identify pathogens reservoirs, among other applications. Thus, my aims are, first of all, to address the questions about the number and distribution of Nectomys species and, secondly, to solve phylogenetic and biogeographic questions. I can reach these aims, examining specimens (morphological and morphometricaly) deposited in zoological collections. The phylogenetic and biogeographic hypotheses will be proposed based on a morphological and molecular approach, which will be analyzed separately and concatenated. To build such assumptions, I will codify the morphological characters and I will use a mitochondrial gene (cytochrome b). (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)
CHIQUITO, ELISANDRA ALMEIDA; PERCEQUILLO, ALEXANDRE REIS. The taxonomic status of Nectomys saturatus Thomas, 1897 (Cricetidae: Sigmodontinae). Zootaxa, v. 4550, n. 3, p. 321-339, . (12/03381-2, 09/16009-1, 16/20055-2, 10/18846-5)
CHIQUITO, ELISANDRA DE ALMEIDA; PERCEQUILLO, ALEXANDRE REIS. On the rare species Amphinectomys savamis Malygin 1994 (Rodentia, Cricetidae, Sigmodontinae): new record and morphological considerations. MAMMALIA, v. 81, n. 5, p. 531-536, . (12/03381-2, 10/18846-5, 09/16009-1)
Academic Publications
(References retrieved automatically from State of São Paulo Research Institutions)
CHIQUITO, Elisandra de Almeida. Systematics of the genus Nectomys Peters, 1860 (Cricetidae, Sigmodontinae). 2015. Doctoral Thesis - Universidade de São Paulo (USP). Escola Superior de Agricultura Luiz de Queiroz (ESALA/BC) Piracicaba.

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