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Diversity of neotropical rodents (Rodentia: Sciuridae, Cricetidae, Echimyidae): origin, evolution and biogeography

Grant number: 20/11444-0
Support Opportunities:Research Projects - Thematic Grants
Duration: June 01, 2022 - May 31, 2027
Field of knowledge:Biological Sciences - Zoology - Taxonomy of Recent Groups
Principal Investigator:Alexandre Reis Percequillo
Grantee:Alexandre Reis Percequillo
Host Institution: Escola Superior de Agricultura Luiz de Queiroz (ESALQ). Universidade de São Paulo (USP). Piracicaba , SP, Brazil
Associated researchers:Ana Carolina D'Oliveira Pavan ; Ana Lazar Gomes e Souza ; Ana Paula Carmignotto ; Cibele Rodrigues Bonvicino ; Edson Fiedler de Abreu Júnior ; Elisandra de Almeida Chiquito ; Fabre Pierre-Henri ; Gabriel Henrique Marroig Zambonato ; Guillermo D'Elia ; Jeronymo Dalapicolla ; Jesus Eduardo Maldonado ; José Cassimiro da Silva Junior ; José Maurício Barbanti Duarte ; Joyce Rodrigues Do Prado ; Laura Lacey Knowles ; Marcelo Weksler ; Paulo Ricardo de Oliveira Roth ; Renato Gregorin ; ROBERTO PORTELA MIGUEZ ; Scott Steppan
Associated scholarship(s):23/18114-4 - TURBINATE BONES MORPHOLOGY OF THE ORYZOMYINI TRIBE (MAMMALIA RODENTIA SIGMODONTINAE): AN ECOMORPHOLOGICAL APPROACH, BP.IC
23/16032-0 - INTRASPECIFIC VARIATION IN ECHIMYS CHRYSURUS (Zimmermann, 1780) (Rodentia, Echimyidae), BP.IC
22/15437-4 - NON-FLYING SMALL MAMMALS OF THE SÃO PAULO STATE CERRADO: DIVERSITY, HABITAT USE AND THE IMPACT OF WOODY ENCROACHMENT, BP.DR
+ associated scholarships 22/16202-0 - Diversity of Neotropical rodents (Rodentia: Sciuridae, Cricetidae, Echimyidae): Origin, Evolution and Biogeography, BP.PD
21/00159-6 - Diversification history of bamboo's rats in Amazon rainforest (Dactylomys, Echimyidae, Rodentia): a phylogenomical and ecomorphological approach, BP.MS
19/05374-2 - Taxonomy and systematics of species of the tribe Akodontini (Rodentia: Cricetidae) from Western Brazil, BP.DR - associated scholarships

Abstract

The biological sciences are facing several challenges and one of the most important has been to describe, quantify and understand biological diversity and the mechanisms that generate and maintain the diversity. More intriguing, it has been to evaluate why in some lineages high species richness in accompanied by ecomorphological disparity while in others not. The backbone of this proposal is to study the patterns and process of diversification that explain such differences, using as a biological model an impressive group of mammals of the Neotropical region, the rodents of the families Sciuridae, Cricetidae and Echimyidae (squirrels, rats and spiny-rats). These rodents represent good models as: 1) they are relatively easy to sample, both in the field and collections, and will provide enough sample size for all populations modelling analysis; 2) these three groups represent distinct evolutionary lineages (although being a monophyletic group), with distinct times of arrival in South America and apparently different levels of diversification; 3) several species of each family exhibit sympatric distributions, but with distinct ecologies and life-histories. Although widespread throughout the Neotropical region, rodents and Amazon conform a unique combination, as the Amazon forest is presumed to assemble the most diverse assemblages of these rodents and the most complex scenarios of biotic diversification, but for these groups this still need to be more adequately studied and tested. Consequently, most sampling effort is planned to occur in this region, from where we already have available important samples fir these groups. The patterns and processes of diversification will be studied through innovative concepts and methods, such as comparative phylogeography and coalescent species delimitation approach through the employment of genomic and geometric morphometric analytical methods on a microevolutionary perspective, and time and ancestral area estimates coupled to diversification analyses on a macroevolutionary approach. The combination of the three characteristics of rodents with the Amazonian as the main study area fulfill the theoretical and analytical requirements and premises of qualitative and quantitative methods that will be employed on this proposal.Therefore, our objectives are to describe, quantify and understand biological diversity and the mechanisms that generate and maintain the diversity. (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)
PERCEQUILLO, ALEXANDRE REIS; WEKSLER, MARCELO. Systematics of the genus Euryoryzomys Weksler et al., 2006 (Rodentia: Cricetidae): integrative analysis reveals a new species from north-eastern Brazil. ZOOLOGICAL JOURNAL OF THE LINNEAN SOCIETY, v. N/A, p. 39-pg., . (20/11444-0, 09/16009-1)

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