ORCID Profile
0000-0003-3958-9919
Current Organisation
Universidade de São Paulo
Does something not look right? The information on this page has been harvested from data sources that may not be up to date. We continue to work with information providers to improve coverage and quality. To report an issue, use the Feedback Form.
Publisher: Elsevier BV
Date: 11-2014
DOI: 10.1016/J.YMPEV.2014.07.022
Abstract: Levels of bio ersity in the Neotropics are largely underestimated despite centuries of research interest in this region. This is particularly true for the Cerrado, the largest Neotropical savanna and a formally recognized bio ersity hotspot. Molecular species delimitation methods have become essential tools to uncover cryptic species and can be notably robust when coupled with morphological information. We present the first evaluation of the monophyly and cryptic speciation of a widespread Cerrado endemic lizard, Gymnodactylus amarali, using phylogenetic and species-trees methods, as well as a coalescent-based Bayesian species delimitation method. We tested whether lineages resulting from the analyses of molecular data are morphologically diagnosed by traditional meristic scale characters. We recovered eight deeply ergent molecular clades within G. amarali, and two additional ones from seasonally dry tropical forest enclaves between the Cerrado and the Caatinga biomes. Analysis of morphological data statistically corroborated the molecular delimitation for all groups, in a pioneering ex le of the use of support vector machines to investigate morphological differences in animals. The eight G. amarali clades appear monophyletic and endemic to the Cerrado. They display several different properties used by biologists to delineate species and are therefore considered here as candidates for formal taxonomic description. We also present a preliminary account of the biogeographic history of these lineages in the Cerrado, evidence for speciation of sister lineages in the Cerrado-Caatinga contact, and highlight the need for further morphological and genetic studies to assess cryptic ersity in this bio ersity hotspot.
Publisher: Magnolia Press
Date: 23-11-2016
DOI: 10.11646/ZOOTAXA.4196.3.9
Abstract: The question whether taxonomic descriptions naming new animal species without type specimen(s) deposited in collections should be accepted for publication by scientific journals and allowed by the Code has already been discussed in Zootaxa (Dubois & Nemésio 2007 Donegan 2008, 2009 Nemésio 2009a–b Dubois 2009 Gentile & Snell 2009 Minelli 2009 Cianferoni & Bartolozzi 2016 Amorim et al. 2016). This question was again raised in a letter supported by 35 signatories published in the journal Nature (Pape et al. 2016) on 15 September 2016. On 25 September 2016, the following rebuttal (strictly limited to 300 words as per the editorial rules of Nature) was submitted to Nature, which on 18 October 2016 refused to publish it. As we think this problem is a very important one for zoological taxonomy, this text is published here exactly as submitted to Nature, followed by the list of the 493 taxonomists and collection-based researchers who signed it in the short time span from 20 September to 6 October 2016.
Publisher: Wiley
Date: 16-08-2020
DOI: 10.1111/JBI.13937
Publisher: Informa UK Limited
Date: 17-08-2021
Publisher: Wiley
Date: 19-03-2015
DOI: 10.1111/CLA.12118
Publisher: Elsevier BV
Date: 2016
DOI: 10.1016/J.YMPEV.2015.09.005
Abstract: The Cerrado is a wide Neotropical savanna with tremendously high endemic ersity. Yet, it is not clear what the prevalent processes leading to such ersification are. We used the Cerrado-endemic lizard Norops meridionalis to investigate the main abiotic factors that promoted genetic ergence, the timings of these ergence events, and how these relate to cryptic ersity in the group. We sequenced mitochondrial and nuclear genes from 21 sites of N. meridionalis to generate species tree, ergence time estimations, and estimate species limits. We also performed population-level analysis and estimated distribution models to test the roles of niche conservatism and ergence in the group ersification. We found that N. meridionalis is composed by at least five cryptic species. Divergence time estimations suggest that the deepest branches split back into the early-mid Miocene, when most of the geophysical activity of the Cerrado took place. The deep ergences found in N. meridionalis suggest that beta anoles invaded South America much earlier than previously thought. Recent published evidence supports this view, indicating that the Panama gap closed as early as 15 mya, allowing for an early invasion of Norops into South America. The spatial pattern of ersification within N. meridionalis follows a northwest-southeast direction, which is consistent across several species of vertebrates endemic to the Cerrado. Also, we found evidence for non-stationary isolation by distance, which occurs when genetic differentiation depends on space. Our preliminary data in two out of five lineages suggest that niche conservatism is an important mechanism that promoted geographic fragmentation in the group.
Publisher: FapUNIFESP (SciELO)
Date: 2021
DOI: 10.1590/1676-0611-BN-2020-1147
Abstract: Abstract: Many tropical anurans use forest streams to deposit their eggs, but resource use and selection by tadpoles in tropical forests are poorly known. In the present research, we hypothesized that leaf litter and water depth affect tadpole assemblages due to adult habitat selection for oviposition and/or microhabitat selection by tadpoles. Fieldwork was carried out in the Estação Biológica de Boracéia, an Atlantic Rainforest reserve in São Paulo state, southeastern Brazil. We s led tadpoles during a year using 40 double-entry funnel-traps distributed along four streams in the forest. Only leaf litter effects are species dependent. We discussed that habitat structure significance depends on the morphological and ecological adaptation to forage and avoid competition within the tadpole community.
Publisher: American Association for the Advancement of Science (AAAS)
Date: 23-05-2014
Publisher: Wiley
Date: 28-06-2013
DOI: 10.1111/CLA.12045
Publisher: Informa UK Limited
Date: 19-10-2022
No related grants have been discovered for Miguel Trefaut Rodrigues.