22 documents found, page 1 of 3
Occurrence and conservation of the Vulnerable titi monkey Callicebus melanochir...
Costa-Araújo, Rodrigo; Regolin, André Luis [UNESP]; Martello, Felipe; Souza-Alves, João Pedro; Hrbek, Tomas; Ribeiro, Milton Cezar [UNESP]Made available in DSpace on 2022-05-01T05:29:00Z (GMT). No. of bitstreams: 0 Previous issue date: 2021-11-26; Tropical forest hotspots have a high diversity of species but have lost > 70% of their original vegetation cover and are characterized by a multitude of small and isolated fragments. Paradoxically, conservation actions in these areas are still mainly focused on protection of large tracts of forests, a s...
Systematics and biogeography of the Boana albopunctata species group (Anura, Hy...
Fouquet, Antoine; Marinho, Pedro; Rejaud, Alexandre; Carvalho, Thiago R. [UNESP]; Caminer, Marcel A.; Jansen, Martin; Rainha, Raissa N.Made available in DSpace on 2021-06-25T12:41:13Z (GMT). No. of bitstreams: 0 Previous issue date: 2021-01-20; 'Investissement d'Avenir' grant; Brazilian Fundacao de Amparo a Pesquisa do Estado do Amazonas; Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP); SENESCYT (Arca de Noe Initiative); Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq); Coordenação de Aperfeiçoamento de Pessoa...
Uncovering the diversity in the amazophrynella minuta complex: Integrative taxo...
Rojas, Rommel R.; Chaparro, Juan Carlos; Carvalho, Vinícius Tadeu de; Ávila, Róbson Waldemar; Farias, Izeni P.; Hrbek, Tomas; Gordo, MarceloA new species of the genus Amazophrynella (Anura, Bufonidae) is described from the departments of Madre de Dios, Cusco and Junin in Peru. An integrative taxonomy approach is used. A morphological diagnosis, morphometrics comparisons, description of the advertisement call, and the phylogenetic relationships of the new species are provided. Amazophrynella javierbustamantei sp. n. differs from other species of Ama...
A Pan-Amazonian species delimitation: High species diversity within the genus A...
Rojas, Rommel R.; Fouquet, Antoine; Ron, Santiago R.; Hernández-Ruz, Emil José; Melo-Sampaio, Paulo Roberto; Chaparro, Juan Carlos; Vogt, Richard CarlAmphibians are probably the most vulnerable group to climate change and climatechange associate diseases. This ongoing biodiversity crisis makes it thus imperative to improve the taxonomy of anurans in biodiverse but understudied areas such as Amazonia. In this study, we applied robust integrative taxonomic methods combining genetic (mitochondrial 16S, 12S and COI genes), morphological and environmental data to...
Remarkable geographic structuring of rheophilic fishes of the lower Araguaia River
Hrbek, Tomas; Meliciano, Natasha V.; Zuanon, Jansen; Farias, Izeni P.Rapids and waterfalls, and their associated fauna and flora are in peril. With the construction of each new hydroelectric dam, more rapids and waterfalls are destroyed, leading to the disappearance of associated fauna and flora. Areas of rapids harbor distinct, highly endemic rheophilic fauna and flora adapted to an extreme environment. Rheophilic habitats also have disjunct distribution both within and across ...
One thousand DNA barcodes of piranhas and pacus reveal geographic structure and...
Machado, Valéria Nogueira; Collins, Rupert A.; Ota, Rafaela Priscila; Andrade, Marcelo C.; Farias, Izeni P.; Hrbek, TomasPiranhas and pacus (Characiformes: Serrasalmidae) are a charismatic but understudied family of Neotropical fishes. Here, we analyse a DNA barcode dataset comprising 1,122 specimens, 69 species, 16 genera, 208 localities, and 34 major river drainages in order to make an inventory of diversity and to highlight taxa and biogeographic areas worthy of further sampling effort and conservation protection. Using four m...
A new species of river dolphin from Brazil or: How little do we know our biodiv...
Hrbek, Tomas; Silva, Vera Maria Ferreira da; Dutra, Nicole C.L.; Gravena, Waleska; Martin, Anthony Richard; Farias, Izeni P.True river dolphins are some of the rarest and most endangered of all vertebrates. They comprise relict evolutionary lineages of high taxonomic distinctness and conservation value, but are afforded little protection. We report the discovery of a new species of a river dolphin from the Araguaia River basin of Brazil, the first such discovery in nearly 100 years. The species is diagnosable by a series of molecula...
Rivers acting as barriers for bird dispersal in the Amazon
Fernandes, Alexandre Mendes; Cohn-Haft, Mario; Hrbek, Tomas; Farias, Izeni P.Morphological, vocal and genetic studies have shown that the Madeira River and its right bank tributaries delimit populations of primates and birds. We sequenced the cytochrome b gene (approx. 950 bp) for individuals of three suboscine passerine bird species, Glyphorynchus spirurus (Furnariidae), Willisornis poecilinotus (Thamnophilidae) and Schiffornis turdina (Tityridae), on opposite banks of the Madeira Rive...
The Munduruku marmoset: A new monkey species from southern Amazonia
Costa-Araújo, Rodrigo; Melo, Fabiano Rodrigues de; Canale, Gustavo Rodrigues; Hernández-Rangel, Sandra Marcela; Messias, Mariluce RezendeAlthough the Atlantic Forest marmosets (Callithrix spp.) are among the best studied Neotropical primates, the Amazonian marmosets (Callibella humilis, Cebuella spp. and Mico spp.) are much less well-known. Even species diversity and distributions are yet to be properly determined because field data and materials currently available in scientific collections do not allow comprehensive taxonomic studies of Amazon...
Comparative cytogenetics of two of the smallest Amazonian fishes: Fluviphylax s...
Souza, E. R.; Braga Ribeiro, Leila; Feldberg, Eliana; Farias, Izeni P.; Hrbek, Tomas; Gross, Maria ClaudiaThe genus Fluviphylax Whitley, 1965 is comprized of five valid species (F. pygmaeus Myers et Carvalho, 1955, F. zonatus, F. simplex, F. obscurus Costa, 1996, and F. palikur Costa et Le Bail, 1999), which are endemic to the Amazon region. These fishes are the smallest known South American vertebrates and among the smallest know vertebrates on Earth. All species but the type F. pygmaeus have been described in lat...