Results 51 to 60 of about 274 (168)

Seven new species of the killifish genus Rivulus (Cyprinodontiformes: Rivulidae) from the Paraná, Paraguay and upperAraguaia river basins, central Brazil

Neotropical Ichthyology
Seven new species of the Rivulus punctatus group collected during recent field studies in central Brazil are described. Rivulus dapazi n. sp., from the upper rio Correntes drainage, rio Paraguay basin, is diagnosed by a unique color pattern of the anal ...
Wilson J. E. M. Costa
doaj   +1 more source

Genetic Diversity and Phylogenetic Relationships of Coevolving Symbiont-Harboring Insect Trypanosomatids, and Their Neotropical Dispersal by Invader African Blowflies (Calliphoridae)

Frontiers in Microbiology, 2018
This study is about the inter- and intra-specific genetic diversity of trypanosomatids of the genus Angomonas, and their association with Calliphoridae (blowflies) in Neotropical and Afrotropical regions. Microscopic examination of 3,900 flies of various
Tarcilla C. Borghesan, Marta Campaner, Tania E. Matsumoto, Omar A. Espinosa, Victor Razafindranaivo, Fernando Paiva, Julio C. Carranza, Nestor Añez, Luis Neves, Luis Neves, Marta M. G. Teixeira, Erney P. Camargo   +11 more
doaj   +1 more source

Eye Darkening Under Dehydration Stress in the Neotropical Frog Boana punctata (Schneider, 1799)

Journal of Experimental Zoology Part A: Ecological and Integrative Physiology, EarlyView.
Dehydration induces a strong and partially reversible increase in iris pigmentation in the Neotropical frog Boana punctata. The tight relationship between iris darkening and hydration state identifies ocular pigmentation as a simple, non‐invasive physiological biomarker with broad potential for assessing hydric stress in amphibian populations ...
Ricardo Reques, Eduardo F. Schaefer, Eduardo A. Sanabria, Leonardo D. Aguiar, Lorena B. Quiroga, Miguel Tejedo   +5 more
wiley   +1 more source

Social wasps (Vespidae: Polistinae) from Ducke Reserve, Amazonas, Brazil

Sociobiology, 2017
Social wasps are common elements in Neotropics, although even elementary data about this taxon in the Amazon region is partially unknown. Therefore the purpose of this work was to increase the knowledge of social wasp fauna at the Ducke Reserve.
Alexandre Somavilla, Marcio Luiz de Oliveira   +1 more
doaj   +1 more source

A new combination in Strophopappus (Asteraceae, Vernonieae, Lepidaploinae)

Nordic Journal of Botany, EarlyView.
Revisions of herbarium collections reveal a new combination in Strophopappus (Asteraceae, Vernonieae, Lepidaploinae). Strophopappus comprises nine species occurring in South America, eight of which are endemic to Brazil. Currently, Vernonia riedeliana is treated as a synonym of Strophopappus bicolor.
Danielle Remor, Carolina M. Siniscalchi, Benoît Loeuille   +2 more
wiley   +1 more source

Portulaca abscondita (Portulacaceae, Caryophyllales), a new microendemic species from Monte Azul, Minas Gerais, Brazil

Nordic Journal of Botany, EarlyView.
Portulaca (Portulacaceae) is a cosmopolitan genus with centers of diversity in Africa and South America. In Brazil, 22 species are recognized, most occurring in xerophytic environments of the Cerrado, particularly in Campos Rupestres. These rocky montane habitats, especially in northern Minas Gerais state, remain undercollected despite their high ...
Danilo Alvarenga Zavatin, Renato Ramos, Jefferson Prado, Angélica Quintanar Castillo, Maria Guadalupe Carvalho Fernandes, Daniela Boanares, José Roberto Ferraz, Thaíla Vieira Alves dos Santos   +7 more
wiley   +1 more source

A new old species of Tetracera (Dilleniaceae) from Espinhaço Range, Brazil

Nordic Journal of Botany, EarlyView.
Tetracera is the only genus within Dilleniaceae with a pantropical distribution. During efforts for a taxonomic revision of the neotropical species, we identified incongruences between application of names and their taxonomic identities, based on protologue and type specimen analysis. Here we describe a new species for the genus bearing a single carpel
Michelly D. F. Araújo, João V. L. Monzoli, Leandro L. Giacomin, Claudio N. Fraga   +3 more
wiley   +1 more source

Contribuição ao conhecimento da melhor terapêutica curativa do tifo exantemático no Brasil (doenca de Piza, Meyer e Gomes)

Memorias do Instituto Oswaldo Cruz, 1953
O autor diz ter tentado a terapêutica do Tifo exantemático neotrópico entre nós, por várias maneiras, durante cêrca de 18 anos, sem que tivesse obtido resultado apreciável.
Octavio de Magalhães
doaj   +1 more source

Fruit use and fruit processing by euphonias, specialized avian frugivores

Oikos, EarlyView.
Euphonias (Neotropical passerines in the genera Euphonia and Chlorophonia) form the quintessential example of a specialized avian frugivore, combining a high reliance on fruit as food and the restriction of fruit taxa exploited. To understand their specialization, we explored the integration of fruit morphological and nutritional traits with their ...
Marco A. Pizo, Paulo H. A. Camargo, Ana C. Crestani, Tobias N. Rojas   +3 more
wiley   +1 more source

Contribuição ao estudo das Pasteurellas: pasteurella intermediária n. sp

Memorias do Instituto Oswaldo Cruz, 1944
Os autores decreveram uma nova bactéria - Pasteurella intermedia n. ap., obtida pela inoculação em cobaio de 2 cc. de sangue total de um indivíduo morto de bronco-pneumonia e suspeito de ter a forma grave de Tifo exantemático neotrópico.
Octavio de Magalhães, Adyr Rocha
doaj   +1 more source