| Full text | |
| Author(s): |
Abreu, Edson Fiedler
;
Dalapicolla, Jeronymo
;
Furini, Paulo Roberto
;
De La Sancha, Noe U.
;
Jansa, Sharon A.
;
Percequillo, Alexandre Reis
Total Authors: 6
|
| Document type: | Journal article |
| Source: | Biological Journal of the Linnean Society; v. N/A, p. 16-pg., 2022-06-08. |
| Abstract | |
The oryzomyine rodent Euryzoryzomys russatus is endemic to the Atlantic Forest of South America, where it inhabits mostly pristine humid forests. Previous phylogeographical studies performed with limited sample sizes indicated that rivers and climatic oscillations might have driven the diversification of this species. Here, we used a more comprehensive database to revisit the phylogeography and demographic history of E. russatus. Our phylogenetic inferences and haplotype network recovered four groups within E. russatus, each of which diversified between 0.33 and 0.60 Mya. These groups are mostly allopatric and are structured latitudinally along the Atlantic Forest. We did not detect any genetic break related to the major river drainages. Species distribution models recovered similar suitable areas for E. russatus in the present and past times, suggesting stability in the geographical range during the Pleistocene. The most pronounced change was the expansion of suitable areas onto the emerged continental shelf during the Last Glacial Maximum. Demographic analyses showed evidence of population expansion during periods of lowered seal levels, especially for the haplogroup associated with the Serra do Mar forest refuge. Therefore, our results failed to support the hypothesis of riverine barriers and suggest that the diversification of E. russatus is explained better by forest refugial processes. (AU) | |
| FAPESP's process: | 16/24464-4 - Phylogeography of two sympatric species of spiny rats from the Western Amazon |
| Grantee: | Jeronymo Dalapicolla |
| Support Opportunities: | Scholarships abroad - Research Internship - Doctorate |
| FAPESP's process: | 15/02853-6 - Integrative taxonomy of the genus Proechimys (Rodentia: Echimydae) from Western Amazon |
| Grantee: | Jeronymo Dalapicolla |
| Support Opportunities: | Scholarships in Brazil - Doctorate |
| FAPESP's process: | 12/15928-6 - Non-volant small mammals of Estação Ecológica de Bananal: molecular analyses |
| Grantee: | Edson Fiedler de Abreu Júnior |
| Support Opportunities: | Scholarships abroad - Research Internship - Master's degree |
| FAPESP's process: | 09/16009-1 - Systematics, evolution and diversification of the subfamily Sigmodontinae in South America: the tribe Oryzomyini |
| Grantee: | Alexandre Reis Percequillo |
| Support Opportunities: | Research Grants - Young Investigators Grants |