| Full text | |
| Author(s): |
Lanna, Flavia
[1]
;
Werneck, Fernanda
[2]
;
Gehara, Marcelo
[3]
;
Fonseca, Emanuel
[1]
;
Colli, Guarino
[4]
;
Sites, Jr., Jack
[5, 6]
;
Rodrigues, Miguel
[7]
;
Garda, Adrian
[8]
Total Authors: 8
|
| Affiliation: | [1] Univ Fed Rio Grande do Norte, Programa Posgrad Ecol, Campus Univ, BR-59078900 Natal, RN - Brazil
[2] INPA, Programa Colecoes Cient Biol, Coordenacao Biodiversidade, BR-69067375 Manaus, Amazonas - Brazil
[3] Amer Museum Nat Hist, Dept Herpetol, 79th St Cent Pk West, New York, NY 10024 - USA
[4] Univ Brasilia, Dept Zool, BR-70910900 Brasilia, DF - Brazil
[5] Brigham Young Univ, Dept Biol, Provo, UT 84602 - USA
[6] Brigham Young Univ, Bean Life Sci Museum, Provo, UT 84602 - USA
[7] Univ Sao Paulo, Inst Biociencias, Dept Zool, BR-05508090 Sao Paulo, SP - Brazil
[8] Univ Fed Rio Grande do Norte, Ctr Biociencias, Dept Bot & Zool, Campus Univ, BR-59078900 Natal, RN - Brazil
Total Affiliations: 8
|
| Document type: | Journal article |
| Source: | Molecular Phylogenetics and Evolution; v. 127, p. 638-645, OCT 2018. |
| Web of Science Citations: | 5 |
| Abstract | |
The Pleistocenic Arc Hypothesis (PAH) posits that South American Seasonally Dry Tropical Forests (SDTF) were interconnected during Pleistocene glacial periods, enabling the expansion of species ranges that were subsequently fragmented in interglacial periods, promoting speciation. The lizard genus Lygodactylus occurs in Africa, Madagascar, and South America. Compared to the high diversity of African Lygodactylus, only two species are known to occur in South America, L. klugei and L. wetzeli, distributed in SDTFs and the Chaco, respectively. We use a phylogenetic approach based on mitochondrial (ND2) and nuclear (RAG-1) markers covering the known range of South American Lygodactylus to investigate (i) if they are monophyletic relative to their African congeners, (ii) if their divergence is congruent with the fragmentation of the PAH, and (iii) if cryptic diversity exists within currently recognized species. Maximum likelihood and Bayesian phylogenetic analyses recovered a well-supported monophyletic South American Lygodactylus, presumably resulting from a single trans-Atlantic dispersal event 29 Mya. Species delimitation analyses supported the existence of five putative species, three of them undescribed. Divergence times among L. klugei and the three putative undescribed species, all endemic to the SDTFs, are not congruent with the fragmentation of the PAH. However, fragmentation of the once broader and continuous SDTFs likely influenced the divergence of L. wetzeli in the Chaco and Lygodactylus sp. 3 (in a SDTF enclave in the Cerrado). (AU) | |
| FAPESP's process: | 13/50297-0 - Dimensions US-BIOTA São Paulo: a multidisciplinary framework for biodiversity prediction in the Brazilian Atlantic forest hotspot |
| Grantee: | Cristina Yumi Miyaki |
| Support Opportunities: | BIOTA-FAPESP Program - Thematic Grants |
| FAPESP's process: | 03/10335-8 - Systematics and evolution of the herpetological fauna from Neotropical areas |
| Grantee: | Miguel Trefaut Urbano Rodrigues |
| Support Opportunities: | Research Projects - Thematic Grants |
| FAPESP's process: | 11/50146-6 - Comparative phylogeography, phylogeny, paleoclimate modeling, and taxonomy of neotropical reptiles and amphibians |
| Grantee: | Miguel Trefaut Urbano Rodrigues |
| Support Opportunities: | BIOTA-FAPESP Program - Thematic Grants |