New records of Trachycephalus mambaiensis (Amphibia: Hylidae) from a cerrado region in Minas Gerais state, Brazil

Dayrell, Jussara Santos; Fernandes, Vítor Dias; Moura, Mario R.; Feio, Renato Neves

doi:10.15560/8.2.269

Cited by 3 publications

(2 citation statements)

References 3 publications

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“…Among the new reports to Cerrado endemic frogs, we highlight the record of Trachycephalus mambaiensis for the Combinado municipality, southeastern of the Tocantins. This species was previously known for the Goiás state (Mambaí and São Domingos municipalities), Bahia (Santa Maria da Vitória municipality) and Minas Gerais (Bonito de Minas, Januária, and João Pinheiro municipalities) state (Freitas et al 2011, Silveira & Pacheco 2011, Dayrell et al 2012. This record extends the distribution of T. mambaiensis nearly 70 km from the near known population, in the São Domingos municipality, Goiás, and is the first for the Tocantins state.…”

Section: New Recordssupporting

confidence: 57%

Richness, diversity patterns, and taxonomic notes of amphibians from the Tocantins state

et al. 2020

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Herein, we provide the first comprehensive amphibian checklist for the State of Tocantins, North of Brazil, based on field sampling, literature data, and specimens deposited in zoological collections. We performed field surveys from 2012 to 2019 in 12 Tocantins municipalities, totaling 376 days of sampling effort. We analyzed 25 papers from the literature and examined 1311 specimens from collections and collected 750 during field surveys. We recorded 90 amphibian species distributed in 12 anurans and two caecilians families. At least seven undescribed species along the state were recorded. We also present new records for 20 species for the state, nine of them corresponding to Amazonian species, four Cerrado endemic, one Caatinga species, and the widely distributed treefrog Boana crepitans; the others five new records comprise undescribed species. Our data also suggest that the Tocantins amphibian composition is not geographically structured in relation to the biomes, since Amazonian, Caatinga, and Cerrado amphibian lineages have their distribution nearly completely overlapped in the state. We propose that this absence of spatial structuration may be a result of two factors (synergetic or not). First, the events of expansion and retraction of the biomes caused by the Quaternary climatic cycles, which may have mixed the populations of species from different biomes causing the notable pattern of overlapped distribution observed here. Second, the forest environments (e.g. gallery and riparian forests) associated to the Araguaia-Tocantins River basins may have acted as historical dispersal corridors for the Amazonian amphibian lineages into the Cerrado of the Tocantins. Despite the sampling effort of the present study, we stress that gaps of information still remain and further field sampling efforts should be performed along the state. Lastly, taxonomic appraisals involving the species with problematic taxonomic status recorded here should be based on multiples lines of evidences (acoustic, molecular, and morphological data), which will render a more accurate view on the Tocantins amphibian diversity. Such data are extremely necessary under the current high rate of habitat loss across the state, since they can be used to guide public policies of conservation.

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Section: New Recordssupporting

confidence: 57%

Richness, diversity patterns, and taxonomic notes of amphibians from the Tocantins state

et al. 2020

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“…nigromaculatus indicates that the species requires taxonomic revision, as its type locality (“America Meridionalis”; von Tschudi, 1838) is too vague to allow a simple association of the name if lineages associated with it are not closely related. These three species of Trachycephalus collectively are distributed throughout a large geographical area (Dias et al, 2010; Roberto et al, 2011; Vieira et al, 2011; Dayrell et al, 2012). This wide distribution, coupled with the low genetic distances and different degrees of ossification, suggest that further studies are needed to understand their geographical variation, contact zones and taxonomic status.…”

Section: Discussionmentioning

confidence: 99%

The phylogeny of the Casque‐headed Treefrogs (Hylidae: Hylinae: Lophyohylini)

et al. 2020

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The South American and West Indian Casque‐headed Treefrogs (Hylidae: Hylinae: Lophyohylini) include 85 species. These are notably diverse in morphology (e.g. disparate levels of cranial hyperossification) and life history (e.g. different reproductive modes, chemical defences), have a wide distribution, and occupy habitats from the tropical rainforests to semiarid scrubland. In this paper, we present a phylogenetic analysis of this hylid tribe based on sequence fragments of up to five mitochondrial (12S, 16S, ND1, COI, Cytb) and six nuclear genes (POMC, RAG‐1, RHOD, SIAH, TNS3, TYR). We included most of its species (> 96%), in addition to a number of new species. Our results indicate: (i) the paraphyly of Trachycephalus with respect to Aparasphenodon venezolanus; (ii) the nonmonophyly of Aparasphenodon, with Argenteohyla siemersi, Corythomantis galeata and Nyctimantis rugiceps nested within it, and Ap. venezolanus nested within Trachycephalus; (iii) the polyphyly of Corythomantis; (iv) the nonmonophyly of the recognized species groups of Phyllodytes; and (v) a pervasive low support for the deep relationships among the major clades of Lophyohylini, including C. greeningi and the monotypic genera Itapotihyla and Phytotriades. To remedy the nonmonophyly of Aparasphenodon, Corythomantis, and Trachycephalus, we redefined Nyctimantis to include Aparasphenodon (with the exception of Ap. venezolanus, which we transferred to Trachycephalus), Argenteohyla, and C. galeata. Additionally, our results indicate the need for taxonomic work in the following clades: (i) Trachycephalus dibernardoi and Tr. imitatrix; (ii) Tr. atlas, Tr. mambaiensis and Tr. nigromaculatus; and (iii) Phyllodytes. On the basis of our phylogenetic results, we analyzed the evolution of skull hyperossification and reproductive biology, with emphasis on the multiple independent origins of phytotelm breeding, in the context of Anura. We also analyzed the inter‐related aspects of chemical defences, venom delivery, phragmotic behaviour, co‐ossification, and prevention of evaporative water loss.

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Guia de identificação das espécies de anfíbios (Anura e Gymnophiona) do estado de Goiás e do Distrito Federal, Brasil Central

Vaz-Silva¹,

Maciel²,

Nomura³

et al. 2020

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New records of Trachycephalus mambaiensis (Amphibia: Hylidae) from a cerrado region in Minas Gerais state, Brazil

Cited by 3 publications

References 3 publications

Richness, diversity patterns, and taxonomic notes of amphibians from the Tocantins state

Richness, diversity patterns, and taxonomic notes of amphibians from the Tocantins state

The phylogeny of the Casque‐headed Treefrogs (Hylidae: Hylinae: Lophyohylini)

Guia de identificação das espécies de anfíbios (Anura e Gymnophiona) do estado de Goiás e do Distrito Federal, Brasil Central

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