30 results match your criteria: "Cidade Universitria[Affiliation]"
Zootaxa
January 2024
Laboratrio de Helmintos Parasitos de Peixes; Instituto Oswaldo Cruz; FIOCRUZ. Avenida Brasil 4365; 21040-360 Rio de Janeiro; RJ; Brazil.
During a study conducted on the helminth fauna of fishes in the middle Munim River basin, State of Maranho, northeastern Brazil, three species (two new) of Diaphorocleidus Jogunoori, Kritsky & Venkatanarasaiah, 2004 are reported from the gills of the piaba Bryconops cf. affinis (Iguanodectidae): Diaphorocleidus affinis (Mizelle, Kritsky & Crane, 1968), D. forcipiformis n.
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January 2024
Universidade de So Paulo; Museu de Zoologia. Av. Nazar 481; 04263-000; Ipiranga; So Paulo; SP; Brazil.
A new monotypic genus of Neurigoninae (Diptera: Dolichopodidae), Naglisia gracilis gen. et sp. nov.
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February 2024
Department of Herpetology; American Museum of Natural History; Central Park West & 79th St.; 10024; New York; NY; U.S.A.; Departmento de Zoolog Universidad de Sevilla; 41012; Sevilla; Spain.
We describe a new species of the Scinax cruentomma species group, with a red streak in the iris and a weakly bilobate vocal sac. It is known from oligotrophic soils in the sedimentary basin of the Ucayali River near Jenaro Herrera (province of Requena, Peru) and Ro Blanco (buffer zone of the Matses Indigenous territory and reserve). The new species can be distinguished from the other species of the S.
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September 2023
Laboratrio de Ictiologia e Conservao. Universidade Federal de Alagoas; Unidade Penedo. Av. Beira Rio; s/n; Centro Histrico. Penedo; Alagoas; Brazil. 57.200-000.
Centropristes fusculus Poey, 1861 historically has variously and somewhat perplexingly been assigned to Centropristis Cuvier, 1829, Prionodes Jenyns, 1840, and Serranus Cuvier, 1816. Here, we provide evidence from comparisons of morphology, ecology, and sexual systems for its inclusion in Serranus and redescribe the species based on the holotype and 60 specimens from Brazil, the Caribbean, the United States, and Uruguay. Serranus fusculus is a simultaneous hermaphrodite, a sexual system that is relevant to its generic placement.
View Article and Find Full Text PDFIn this study we address the diversity of the scyphozoan jellyfish genus Nausithoe Klliker, 1853 (Nausithoidae, Coronatae), questioning the feasibility of using some characters of the medusa stage to identify species and filling in gaps concerning species of the genus and their distributions. Like most scyphozoans, the vast majority of the 21 Nausithoe species have a metagenetic life cycle, but similarity of most polyps within the genus highlights the need for studying morphology of the medusa stage. By analyzing morphological features on preserved and live specimens (polyps and medusae) and comparing these data with the original descriptions, we were able to validate twenty species of the group, providing new information for some of them.
View Article and Find Full Text PDFThe genus Lissodendoryx Topsent, 1892 has 118 valid species for the world, with five species records for Brazil. Here, we provide a description of Lissodendoryx (Waldoschmittia) almeidai sp. nov.
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December 2023
Laboratrio de Ictiologia Sistemtica e Evolutiva; Departamento de Botnica e Zoologia; Universidade Federal do Rio Grande do Norte; Lagoa Nova; 59078-970 Natal; RN; Brazil.
Hypsolebia antenori is a seasonal killifish considered to be broadly distributed along the Caatingas basins of northeastern Brazil, with records in the coastal drainages of the rio Pacoti, rio Jaguaribe, crrego Virglio and rio Apodi-Mossor basins. Based on morphological characters and molecular phylogenetic reconstructions, it was possible to diagnose two new species and restrict H. antenori to the rio Jaguaribe basin.
View Article and Find Full Text PDFSpiders of the family Trochanteriidae are characterized by the carapace being extremely flat, with a reflex border, medium posterior eyes flattened, laterigrade legs, the absence of claw tufts, anterior lateral spinnerets with an incomplete distal article, and an inflatable and epiginal plate formed by a divided plate. Two out of the six worldwide genera of Trocantheriids have species in the Brazilian areas: Trochanteria Karsch and Vectius Simon. Here we present the redescription of Vectius niger and morphological data of Trochanteria gomezi, with an expansion of the distribution of these species in the Neotropical region and unpublished chromosomal data of both species.
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April 2023
Laboratory of Advanced Analysis in Biochemistry and Molecular Biology (LAABBM), Department of Biochemistry, Chemistry Institute, Federal University of Rio de Janeiro (UFRJ), Avenida Athos da Silveira Ramos 149, Cidade Universitaria, Rio de Janeiro 21941-909, Brazil.
Beetroot is a tuber rich in antioxidant compounds, i.e., betanin and saponins, and is one of the main sources of dietary nitrate.
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February 2023
Departamento de Química Fundamental, Universidade Federal de Pernambuco Cidade Universitria, CEP, 50.740-540, Recife, PE, Brazil.
An NMR weakly-aligning polymer gel has been prepared by copolymerization of acrylonitrile and 2-acrylamide-2-methyl-1-propanesulfonic acid in the presence of 1,4-butanediol diacrylate as a cross-linker. The polymer readily swells in water in a large range of temperatures, although the swelling ratio is decreased in saline solutions. The swollen gel can be mechanically compressed, in a reversible way, generating anisotropy, as easily shown in H NMR experiments, and allowing measurement of D residual dipolar couplings (RDCs) through F1-coupled HSQC experiments.
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July 2022
Laboratrio de Entomologia, Departamento de Zoologia, Instituto de Biologia, Universidade Federal do Rio de Janeiro, Caixa Postal 68044, Cidade Universitria, Rio de Janeiro, 21941-971, RJ, Brasil.
A new leafhopper genus of the tribe Gyponini, Domahovana gen. nov., is proposed and described based on four newly described species from Amazonas State, Northern Brazil: Domahovana icamiabas sp.
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April 2022
Laboratrio de Carcinologia, Faculdade de Formao de Professores (FFP), Universidade do Estado do Rio de Janeiro (UERJ). R. Francisco Portela, 1470, So GonaloRJ, Brazil.
Magnaphoxus ajaja gen. et sp. nov.
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June 2022
Laboratrio de Ictiologia Sistemtica e Evolutiva, Departamento de Botnica e Zoologia, Centro de Biocincias, Universidade Federal do Rio Grande do Norte, Av. Senador Salgado Filho, 3000, 59072-970 Natal, RN, Brazil. .
Zootaxa
August 2022
Laboratrio de Entomologia, Departamento de Zoologia, Instituto de Biologia, Universidade Federal do Rio de Janeiro, A1-107, Bloco A, Av. Carlos Chagas Filho, 373, Cidade Universitria, CEP: 21941-599, Rio de Janeiro, Brazil..
Opisthencentrus W. Horn, 1893 is a rare monotypic genus of Cicindelidae. The only species, Opisthencentrus dentipennis (Germar, 1843), was recently revised, based only on seven historical specimens, besides a recent published record.
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March 2022
Setor de Herpetologia, Museu de Histria Natural, Universidade Federal de Alagoas, Avenida Amazonas, S/N, Prado, 57010-060, Macei, Alagoas, Brasil. Setor de Biodiversidade, Instituto de Cincias Biolgicas e da Sade, Universidade Federal de Alagoas, Av. Lourival Melo Mota, S/N, Tabuleiro do Martins, 57072-900, Macei, Alagoas, Brasil..
We describe two new species of Brazilian geckos of the genus Phyllopezus based on morphological and molecular data. The first species is currently known from a relictual Cerrado enclavecampos rupestres, in the mountains of the Serra do Espinhao in the state of Bahia. The second species is known from northeastern Atlantic Forest and transitional areas with Caatinga biome in the state of Alagoas.
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November 2021
Laboratrio de Ecologia e Evoluo, Instituto de Cincias Exatas e da Natureza, Universidade da Integrao Internacional da Lusofonia AfroBrasileira, Rodovia CE-060, Km 51, s/n, 62785-000, Acarape, CE, Brazil..
Harvestmen are one of the largest groups of arachnids with more than 6,500 species distributed in 1,500 genera and 50 families. However, the interactions between harvestmen and arthropod-pathogenic fungi have rarely been studied. Certain previous studies report that fungal attack represents one of the most important factors for the mortality of harvestmen, but the fungus has rarely been identified, and most of the important information about the fungus-host interactions remains unrecorded.
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July 2021
Laboratrio de Anfbios e Rpteis, Departamento de Zoologia, Instituto de Biologia, Universidade Federal do Rio de Janeiro (UFRJ). Av. Carlos Chagas Filho, 373, Prdio do CCS, Bloco A, Sala A1-111, Cidade Universitria, CEP 21941-902, Rio de Janeiro, RJ, Brazil..
N/A.
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July 2021
Department of Zoology, Institute of Biosciences, University of So Paulo, Rua do Mato, Travessa 14, n. 101, Cidade Universitria, So Paulo-SP, 05508-900, Brazil. .
Eudexia Brauer Bergenstamm, 1889, a Dexiini genus restricted to the Neotropical Region, is revised with proposal of the following new synonymies: Chaetocalirrhoe Townsend, 1935 = Eudexia, syn. nov. and Cordillerodexia Townsend, 1927 = Eudexia, syn.
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October 2021
Departamento de Zoologia, Instituto de Biologia, Universidade Federal do Rio de Janeiro, Caixa Postal 68044, Cidade Universitria, 21941-971, Rio de Janeiro, RJ, Brazil. Tel. +55 21 3938-6371.
Ibyacerina caparao new genus, new species (Trichoptera: Leptoceridae) is described and illustrated from specimens collected at Serra do Capara, Minas Gerais, Brazil. The monotypic genus is characterized by tibial spur formula 0,2,2; preanal appendages originating from a single base with a median process; tergum X broad, heavily sclerotized, saddle-like, wider at apex, and upturned, bearing small stout setae; inferior appendages each 3-branched, setose; and phallic apparatus tubular, curved slightly ventrad, with pair of lateral processes. Phylogenetic Bayesian and maximum likelihood analyses based on concatenated cytochrome oxidase I (COI) and carbamoyl-phosphate synthetase (CAD) partial sequences (1,504 bp) including representatives of 38 leptocerid genera positioned Ibyacerina gen.
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September 2021
Universidade Federal de Pernambuco, Avenida Professor Moraes Rego, s/n, Departamento Zoologia, Cidade Universitria, Recife, Pernambuco 50670-901. Brazil.
A study involving experiments on a natural Brazilian coral reef, with the aim of assessing the impacts that may be caused by an increase in sea level on benthic fauna, showed that Chromadoridae Filipjev, 1917 was the most abundant and diverse family of Nematoda. Our results also showed that Chromadora Bastian, 1865 was the most abundant and diverse genus, represented by three species: C. serrambi sp.
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August 2021
Department of Biology, The University of Texas at Arlington, Texas 76019-0498..
We describe a new species of gymnophthalmid lizard, Oreosaurus bisbali sp. nov., from the Turimiquire Massif in northeastern Venezuela.
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August 2021
Departamento de Zoologia, Universidade Federal de Pernambuco, Av. Professor Moraes Rego, S/N, Cidade Universitria, 50760-420, Recife, PE, Brazil. .
We describe a new species of nurse-frog (Aromobatidae, Allobates) from the Amazonian forest of Loreto, Peru using morphological, acoustic and genetic data. Our phylogenetic analysis placed Allobates sieggreenae sp. nov.
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November 2021
Departamento de Entomologia, Museu Nacional, Universidade Federal do Rio de Janeiro, Quinta da Boa Vista, So Cristvo, Rio de Janeiro, RJ, Brazil. .
Neometrypus Desutter, 1988 n. status is elevated to the generic level. Ten new species of this genus are described (N.
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August 2021
Universidade Federal de Pernambuco, Departamento de Zoologia, Centro de Biocincias, Av. Professor Moraes Rego s/n, Cidade Universitria 50670901, Recife, Pernambuco, Brazil..
Phys Rev Lett
November 2020
National Research University Higher School of Economics, 101000 Moscow, Russia.
It is well known that superconductivity in quasi-one-dimensional (Q1D) materials is hindered by large fluctuations of the order parameter. They reduce the critical temperature and can even destroy the superconductivity altogether. Here it is demonstrated that the situation changes dramatically when a Q1D pair condensate is coupled to a higher-dimensional stable one, as in recently discovered multiband Q1D superconductors.
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