2,455 results match your criteria Brazilian journal of biology = Revista brasleira de biologia[Journal]


Erratum.

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Braz J Biol 2019 Jul-Sep;79(3):554

[This corrects the article doi: 10.1590/1519-6984.15315]. Read More

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http://dx.doi.org/10.1590/1519-6984.490301DOI Listing

Impact of phosphate solubilizing bacteria on wheat (Triticum aestivum ) in the presence of pesticides.

Braz J Biol 2019 Jan-Mar;79(1):29-37. Epub 2018 Mar 22.

Department of Microbiology and Molecular Genetics, University of the Punjab - PU, Lahore, 54590, Quaid-e-Azam Campus, Pakistan.

Three phosphate solubilizing bacteria were isolated and identified by 16S rRNA sequencing as Pseudomonas putida, Pseudomonas sp and Pseudomonas fulva . The strains were subjected to plant biochemical testing and all the PGPR attributes were checked in the presence of pesticides (chlorpyrifos and pyriproxyfen). The phosphate solubilizing index of strain Ros2 was highest in NBRIP medium i. Read More

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http://dx.doi.org/10.1590/1519-6984.172213DOI Listing
March 2019
1 Read

In vivo induction of hepatocellular carcinoma by diethylnitrosoamine and pharmacological intervention in Balb C mice using Bergenia ciliata extracts.

Braz J Biol 2019 Jan 14. Epub 2019 Jan 14.

Microbial Biotechnology and Medical Toxicology Laboratory, Department of Zoology, University of Azad Jammu and Kashmir, Muzaffarabad-13100, Pakistan.

Background: Hepatocellular carcinoma is the most frequent primary malignancy of liver and accounts for as many as one million deaths worldwide in a year.

Objectives: The aim of the present study was to evaluate the anti-cancerous efficiency of Bergenia ciliata rhizome against diethylnitrosoamine induced hepatocarcinogenesis in Balb C mice.

Methods: One percent diethylnitrosoamine was prepared by using 99 ml of normal saline NaCl (0. Read More

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http://dx.doi.org/10.1590/1519-6984.186565DOI Listing
January 2019
1 Read

Erratum: Fish consumption on the Amazon: a review of biodiversity, hydropower and food security issues.

Authors:

Braz J Biol 2019 Apr-Jun;79(2):368

[This corrects the article doi: 10.1590/1519-6984.186572]. Read More

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http://dx.doi.org/10.1590/1519-6984.790118DOI Listing
December 2018

Variation in the prevalence and abundance of acanthocephalans in brown-nosed coatis Nasua nasua and crab-eating foxes Cerdocyon thous in the Brazilian Pantanal.

Braz J Biol 2019 Jul-Sep;79(3):533-542. Epub 2018 Dec 10.

Laboratório de Biologia e Parasitologia de Mamíferos Silvestre Reservatórios, Instituto Oswaldo Cruz - IOC, Fundação Oswaldo Cruz - FIOCRUZ, Avenida Brasil, 4365, Manguinhos, CEP 21045-900, Rio de Janeiro, RJ, Brasil.

Host infection by parasites is influenced by an array of factors, including host and environmental features. We investigated the relationship between host sex, body size and age, as well as seasonality on infection patterns by acanthocephalan in coatis (Procyonidae: Nasua nasua) and in crab-eating foxes (Canidae: Cerdocyon thous ) from the Brazilian Pantanal wetlands. Between 2006 and 2009, we collected faecal samples from these hosts and analyzed for the presence of acanthocephalan eggs. Read More

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http://dx.doi.org/10.1590/1519-6984.187881DOI Listing
December 2018
1 Read

Parasitoids diversity in organic Sweet Pepper (Capsicum annuum) associated with Basil (Ocimum basilicum) and Marigold (Tagetes erecta ).

Braz J Biol 2018 Dec 10. Epub 2018 Dec 10.

Laboratório de Controle Biológico Conservativo, Departamento de Entomologia, Universidade Federal de Lavras - UFLA, Av. Doutor Sylvio Menicucci, 1001, Kennedy, CEP 37200-000, Lavras, MG, Brasil.

The sweet pepper (Capsicum annuum L.) is one of the most important crops in Brazilian farming. Many insect are related to this crop, compromising the quantity and quality of the fruit, representing a production problem. Read More

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http://dx.doi.org/10.1590/1519-6984.185417DOI Listing
December 2018
9 Reads

Protists and other organisms on a minute snail periostracum.

Braz J Biol 2019 Jul-Sep;79(3):521-526. Epub 2018 Dec 3.

Estación Biológica Juan Roberto Zarruk, Universidad Centroamericana - UCA, Rotonda Rubén Darío 150 m Oeste, Managua, Nicaragua.

Since the foundation of the Malacological Center in 1980, Universidad Centro Americana (UCA), Managua-Nicaragua, has been monitoring and collecting the marine, terrestrial, fluvial and lake mollusk population of the country. Many specimens have been photographed by Scanning Electronic Microscope (SEM), and in one of these, observation of the hairy periostracum reveals a seemingly thriving population of minute protists in possible symbiosis with their host. Adequate magnification and comparison with previous studies allowed the determination of these hosts as diatoms, testaceous amoebae, yeast, phacus, spores and other undetermined organisms which occur in tropical forests on rocks, trees and leaves. Read More

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http://dx.doi.org/10.1590/1519-6984.186837DOI Listing
December 2018
2 Reads

Reproductive ecology of Otocinclus vittatus (Regan, 1904) in the Pantanal floodplain, upper Paraguay River basin.

Braz J Biol 2018 Nov 23. Epub 2018 Nov 23.

Laboratório de Ecologia, Centro de Estudos em Recursos Naturais, Universidade Estadual de Mato Grosso do Sul - UEMS, Rodovia Dourados - Itahum, Km 12, CEP 79804-970, Dourados, MS, Brasil.

We studied the reproductive biology of Otocinclus vittatus in the southern Pantanal, Brazil. A total of 1066 fishes were analyzed (490 males, 488 females and 88 individuals of undetermined sex), sampled with a rectangular sieve and a seine net from February/2009 to January/2011. Variations in the sex ratio, seasonality in reproduction, fecundity, and size at first maturity were estimated. Read More

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http://dx.doi.org/10.1590/1519-6984.191560DOI Listing
November 2018
4 Reads

Trichospilus diatraeae (Hymenoptera: Eulophidae): development and reproduction in Lepidoptera palm oil pests.

Braz J Biol 2019 Jul-Sep;79(3):377-382. Epub 2018 Nov 23.

Departamento de Engenharia Florestal, Universidade Federal de Viçosa - UFV, CEP 36570-900 Viçosa, MG, Brasil.

Brazil is a leading palm oil producer, but the defoliating caterpillars Opsiphanes invirae Hübner Brassolis sophorae L. (Lepidoptera: Nymphalidae) can reduce the productivity of this crop. The aim of this study was to evaluate the development and reproduction of the parasitoid Trichospilus diatraeae Cherian & Margabandhu (Hymenoptera: Eulophidae) in pupae of these oil palm defoliators. Read More

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http://dx.doi.org/10.1590/1519-6984.173211DOI Listing
November 2018
1 Read

Biochemical identification techniques and antibiotic susceptibility profile of lipolytic ambiental bacteria from effluents.

Braz J Biol 2018 Nov 23. Epub 2018 Nov 23.

Laboratório de Micologia e Bioprospecção, Departamento de Microbiologia e Parasitologia, Instituto de Biologia, Universidade Federal de Pelotas - UFPel, Av. Eliseu Maciel, IB Prédio 18, Sala 03, CEP 96160-000, Capão do Leão, RS, Brasil.

Different methodologies have been developed throughout the years to identify environmental microorganisms to improve bioremediation techniques, determine susceptibility profiles of bacteria in contaminated environments, and reduce the impact of microorganisms in ecosystems. Two methods of bacterial biochemical identification are compared and the susceptibility profile of bacteria, isolated from residential and industrial wastewater, is determined. Twenty-four bacteria were retrieved from the bacteria bank of the Environmental Microbiology Laboratory at the Institute of Biology (IB) of the Universidade Federal de Pelotas, Pelotas, Brazil. Read More

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http://dx.doi.org/10.1590/1519-6984.05616DOI Listing
November 2018

Women and Science: a portrait of herpetology in the state of Piauí.

Braz J Biol 2018 Nov 14. Epub 2018 Nov 14.

Universidade Federal do Piauí - UFPI, Campus Senador Helvídio Nunes de Barros, Rua Cícero Duarte, 905, CEP 64600-000, Picos, PI, Brasil.

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http://dx.doi.org/10.1590/1519-6984.193049DOI Listing
November 2018

First report of Crocidosema (Epinotia) cosmoptila Meyrick, 1917 (Lepidoptera: Tortricidae) in Brazil.

Braz J Biol 2018 Nov 14. Epub 2018 Nov 14.

Departamento de Agronomia, Universidade Estadual do Centro Oeste - UNICENTRO, Rua Simeão Varela de Sá, 3, Campus Cedeteg, Vila Carli, CEP 85040-080, Guarapuava, PR, Brasil.

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http://dx.doi.org/10.1590/1519-6984.191299DOI Listing
November 2018

Antibacterial and antiproliferative activities of the fresh leaf essential oil of Psidium guajava L. (Myrtaceae).

Braz J Biol 2018 Nov 14. Epub 2018 Nov 14.

Instituto Federal de Educação, Ciência e Tecnologia do Sul de Minas Gerais, Av. Maria da Conceição Santos, 900, Parque Real, CEP 37550-000, Pouso Alegre, MG, Brasil.

This study evaluated the antibacterial and antiproliferative activities of the essential oil of Psidium guajava leaves (PG-EO), traditionally used in folk medicine. The essential oil was obtained from fresh leaves by hydrodistillation, using a modified Clevenger apparatus. The major PG-EO chemical constituents were identified by GC-MS and GC-FID as being β-caryophyllene (16. Read More

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http://dx.doi.org/10.1590/1519-6984.189089DOI Listing
November 2018
1 Read

Dynamics of vegetation structure in a fragmented landscape in Minas Gerais, Brazil.

Braz J Biol 2018 Nov 14. Epub 2018 Nov 14.

Programa de Pós-graduação em Ciência Florestal, Departamento de Engenharia Florestal, Universidade Federal dos Vales do Jequitinhonha e Mucuri - UFVJM, Rodovia MGT 367, Km 583, 5000, CEP 39100-000, Alto da Jacuba, Diamantina, MG, Brasil.

Considering that area and edge effects are the most important factors that lead to landscape changes from the fragmentation of terrestrial communities, the present study aimed to analyze changes in the structure of vegetation classes of a fragmented landscape. The methodology employed was based on a model of patch dynamics for the years between 1979 and 2015. The analysis was performed with quantitative (area, shape and edge effect) and qualitative (low declivity of the terrain, fire resistance and tolerance to variation in light) variables of the classes of vegetation. Read More

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http://dx.doi.org/10.1590/1519-6984.188643DOI Listing
November 2018
10 Reads

Genotoxicity effects on Geophagus brasiliensis fish exposed to Doce River water after the environmental disaster in the city of Mariana, MG, Brazil.

Braz J Biol 2018 Nov 14. Epub 2018 Nov 14.

Laboratório de Ictiologia Aplicada - LabPeixe, Universidade Vila Velha - UVV, Avenida Comissário José Dantas de Melo, 21, Boa Vista, CEP 29102-920, Vila Velha, ES, Brasil.

The Doce River basin has suffered the largest environmental accident ever occurred in Brazil with the influx of tailings from Fundão and Santarém, belonging to Samarco mining company, due to the disaster in Mariana. A spill between 50 and 60 million m3 of tailings was estimated by the company. According to Samarco, the wastewater was composed mainly of clay, silt and heavy metals like iron, copper and manganese. Read More

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http://dx.doi.org/10.1590/1519-6984.188086DOI Listing
November 2018
15 Reads

Morphobiological, morphometric and ultrastructural characterization of sylvatic Trypanosoma cruzi isolates from Rio de Janeiro state, Brazil.

Braz J Biol 2019 Apr-Jun;79(2):294-303. Epub 2018 Nov 14.

Laboratório Interdisciplinar em Vigilância Entomológica de Diptera e Hemiptera - LIVEDIH, Instituto Oswaldo Cruz - IOC, Fundação Oswaldo Cruz - FIOCRUZ, Av. Brasil, 4365, CEP 21040-900, Rio de Janeiro, RJ, Brasil.

Triatoma vitticeps is a triatomine with geographic distribution restrict to Brazil, which exhibits high prevalence of Trypanosoma cruzi natural infection. Of special epidemiologic concern, this species often invades households in the states of Rio de Janeiro, Minas Gerais and Espírito Santo. The objective of this study was to evaluate morphological and ultrastructural parameters on three T. Read More

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http://dx.doi.org/10.1590/1519-6984.181719DOI Listing
November 2018

Fruit availability at the individual and local levels influences fruit removal in Cecropia pachystachya.

Braz J Biol 2018 Nov 8. Epub 2018 Nov 8.

Laboratório de Ecologia, Manejo e Conservação de Fauna Silvestre - LEMaC, Escola Superior de Agricultura "Luiz de Queiroz" - ESALQ, Universidade de São Paulo - USP, Av. Pádua Dias, 11, CEP 13418-900, Piracicaba, SP, Brasil.

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http://dx.doi.org/10.1590/1519-6984.198339DOI Listing
November 2018

Ecotoxicological risk assessment due to the presence of bisphenol A and caffeine in surface waters in the Sinos River Basin - Rio Grande do Sul - Brazil.

Braz J Biol 2018 Nov 8. Epub 2018 Nov 8.

Laboratório de Toxicologia Analítica, Pós-graduação em Toxicologia e Análises Toxicológicas, Universidade Feevale, ERS 239, 2755, Vila Nova, CEP 93352-000, Novo Hamburgo, RS, Brasil.

Bisphenol A (BPA) is an emerging contaminant, regularly detected in aquatic ecosystems, considered as an endocrine disrupting compound (EDC). Caffeine is another chemical related to human activity, often found in surface waters. The objective of this study was to evaluate the ecotoxicological risk due to BPA and caffeine in water samples from the Sinos River basin, Rio Grande do Sul, Brazil. Read More

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http://dx.doi.org/10.1590/1519-6984.189752DOI Listing
November 2018

Determination of acute toxicity of ammonium in juvenile Patagonian blenny (Eleginops maclovinus).

Braz J Biol 2018 Nov 8. Epub 2018 Nov 8.

Departamento de Ciencias Ambientales, Facultad de Recursos Naturales, Universidad Católica de Temuco, P.O. Box 15-D, Temuco, Chile.

Deionized ammonium (NH3) acute toxicity (LC50-96h) in Patagonian blenny juveniles (Eleginops maclovinus) was assessed. Concentrations of deionized ammonium in salt water were prepared by using 24.09 ± 2. Read More

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http://dx.doi.org/10.1590/1519-6984.186991DOI Listing
November 2018
11 Reads

Accidentally catching of the catfish Lophiosilurus alexandri (Steindachner, 1876) larvae in aquariums with different colors.

Braz J Biol 2018 Nov 8. Epub 2018 Nov 8.

Laboratório de Aquicultura e Ecologia Aquática, Departamento de Zootecnia, Universidade Federal dos Vales do Jequitinhonha e Mucuri-UFVJM , Rodovia MGT 367, Km 583, 5000, Alto da Jacuba, CEP 39100-000, Diamantina, MG, Brasil.

The aim of this study was to evaluate the effect of different colors in development and survival of catfish Lophiosilurus alexandri larvae, as well as over the visual ability of the handler. Larvae were placed in 5 L-aquariums at a density of 7 larvae L-1 , and aquariums had different colors, and were: green and blue (light colors); brown and black (dark colors). The final development; survival, total and standard length, weight and biomass of the larvae were similar in all colored aquaria. Read More

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http://dx.doi.org/10.1590/1519-6984.185502DOI Listing
November 2018

Toxicity bioassay and sub-lethal effects of diazinon on blood profile and histology of liver, gills and kidney of catfish, Clarias gariepinus.

Braz J Biol 2019 Apr-Jun;79(2):326-336. Epub 2018 Nov 8.

Zoology Department, Science College, King Saud University, P. O. Box 2455, Riyadh 11451, Kingdom of Saudi Arabia.

The catfish, Clarias gariepinus, was exposed to different acute concentrations (5-10 mg/l) of diazinon and the Lc50 value was recorded as high as 7.3 mg/l for 96 hours. The fishes exposed to three sub-lethal levels of diazinon (0. Read More

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http://dx.doi.org/10.1590/1519-6984.185408DOI Listing
November 2018
11 Reads

Diet selenium improves the antioxidant defense system of juveniles Nile tilapia ( Oreochromis niloticus L.).

Braz J Biol 2019 Jul-Sep;79(3):527-532. Epub 2018 Oct 25.

Departamento de Zootecnia e Ciências Biológicas, Universidade Federal de Santa Maria - UFSM, Av. Independência, 3751, CEP 98300-000, Palmeira das Missões, RS, Brasil.

From the advancement of tilapia production in recent years, diets are sought that allow the maximum growth, improving health and fish quality. In this study growth, biochemical, hematological and oxidative parameters were evaluated of tilapia fed with increasing selenium levels: 0.53, 0. Read More

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http://dx.doi.org/10.1590/1519-6984.187760DOI Listing
October 2018

Effect of photoperiod on ovarian maturation in Cheirodon interruptus (Teleostei: Characidae).

Braz J Biol 2018 Oct 25. Epub 2018 Oct 25.

Laboratorio de Ecología de Peces, Instituto de Limnología "Dr. Raúl A. Ringuelet" - ILPLA/ CONICET-UNLP, Boulevard 120 y 62, 1460, CP 1900, CC 712, La Plata, Buenos Aires, Argentina.

Cheirodon interruptus is a ubiquitous small characid that inhabits the Pampean region and commonly used as bait. Its vast market is supplied from the wild population causing a significant environmental impact. In this study, we assess the effect of photoperiod on ovarian maturation in order to evaluate its potential as a tool to manipulate reproduction under artificial conditions. Read More

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http://dx.doi.org/10.1590/1519-6984.188607DOI Listing
October 2018

Study on assessment of proximate composition and meat quality of fresh and stored Clarias gariepinus and Cyprinus carpio.

Braz J Biol 2018 Oct 25. Epub 2018 Oct 25.

Department of Zoology, College of Science, King Saud University, P.O. Box 2455, Riyadh 11455, Saudi Arabia.

The organoleptic evaluation and proximate analysis of Clarias gariepinus and Cyprinus carpio were determined in fresh fish and when refrigerated at two different temperatures (-21 °C and 4 °C) for a period of six weeks. A panel of twelve trained judges evaluated the color (live), texture, softness and flavor of fish meat after two minutes' steam cooking. Average score revealed a general decline in organoleptic properties such as color, texture, freshness, and taste of C. Read More

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http://dx.doi.org/10.1590/1519-6984.187647DOI Listing
October 2018
2 Reads

Virulence genes in Escherichia coli isolates from commercialized saltwater mussels Mytella guyanensis (Lamarck, 1819).

Braz J Biol 2018 Oct 25. Epub 2018 Oct 25.

Centro de Ciências da Saúde, Complexo Multidisciplinar de Estudos e Pesquisas em Saúde - COMEPS, Universidade Federal do Recôncavo da Bahia - UFRB, Avenida Carlos Amaral, 1015, Cajueiro, CEP 44574-490, Santo Antônio de Jesus, BA, Brasil.

The isolation of Escherichia coli from food is a major concern. Pathogenic strains of these bacteria cause diseases which range from diarrhea to hemolytic-uremic syndrome. Therefore the virulence genes in E. Read More

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http://dx.doi.org/10.1590/1519-6984.185930DOI Listing
October 2018
5 Reads

Genetic variability of populations of the white-eared opossum, Didelphis albiventris Lund 1840 (Didelphimorphia; Didelphidae) in Brazil.

Braz J Biol 2018 Oct 25. Epub 2018 Oct 25.

Programa de Mestrado em Ciência Animal - CCMA, Centro de Ciências Agrárias - CCA, Universidade Estadual do Maranhão - UEMA, Cidade Universitária Paulo VI, CP 9, São Luís, MA, Brasil.

Didelphis albiventris are found throughout Northeast and Central Brazil to central-southern Uruguay and it was subject of few studies in a population level. Given this, the present study investigated the genetic variability of the species using the mitochondrial molecular marker cytochrome oxidase c subunit I. We analyzed samples from the different biomes within three Brazilian regions: Northeast (Caatinga , Cerrado, and Atlantic Forest), Southeast (Cerrado , Atlantic Forest, Cerrado/Atlantic Forest, and Cerrado/Caatinga ecotones) and South (Pampa and Atlantic Forest). Read More

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http://dx.doi.org/10.1590/1519-6984.184842DOI Listing
October 2018

Microsatellite multiplex systems for Brycon orbignyanus (Characiformes: Bryconidae).

Braz J Biol 2018 Oct 29. Epub 2018 Oct 29.

Laboratório de Recursos Genéticos, Departamento de Zootecnia, Universidade Federal de São João Del Rei - UFSJ, Campus Tancredo de Almeida Neves, Praça Frei Orlando, 170, CEP 36307-352, São João Del-Rei, MG, Brasil.

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http://dx.doi.org/10.1590/1519-6984.192528DOI Listing
October 2018

The effect of replacement of fish meal with Amino Acids and Optimized Protein Levels in the diet of the Nile Tilapia Oreochromis niloticus.

Braz J Biol 2018 Oct 29. Epub 2018 Oct 29.

Department of Zoology, College of Science, King Saud University, Riyadh, Saudi Arabia.

This study was conducted to determine an appropriate replacement of fishmeal with amino acids (AAs) and optimized protein levels in practical diets for Oreochromis niloticus with mean initial body weight 12.52±0.63g. Read More

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http://dx.doi.org/10.1590/1519-6984.189413DOI Listing
October 2018
2 Reads

First record of Bulimulus tenuissimus (Mollusca) as potential experimental intermediate host of Angiostrongylus cantonensis (Nematoda).

Braz J Biol 2018 Oct 29. Epub 2018 Oct 29.

Programa de Pós-graduação em Ciências Veterinárias, Instituto de Veterinária, Universidade Federal Rural do Rio de Janeiro - UFRRJ, BR 465, Km 7, CEP 23897-000, Seropédica, RJ, Brasil.

Snails are essential to complete the life cycle of the metastrongylid nematode Angiostrongylus cantonensis, the causative agent of infections in domestic and wild animals, mainly rodents, and also of neural angiostrongyliasis or eosinophilic meningitis in humans. There are many reports of mollusks that can act as intermediate hosts of this parasite, especially freshwater snails and the African giant Achatina fulica. The terrestrial gastropod Bulimulus tenuissimus is widely distributed in Brazil and other species of the same genus occur in Brazil and other countries, overlapping regions in which there are reports of the occurrence of A. Read More

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http://dx.doi.org/10.1590/1519-6984.188914DOI Listing
October 2018
10 Reads

Role of Synadenium grantii latex proteases in nematicidal activity on Meloidogyne incognita and Panagrellus redivivus.

Braz J Biol 2018 Oct 29. Epub 2018 Oct 29.

Departamento de Bioquímica e Biologia Molecular, Universidade Federal de Viçosa - UFV, Av. Peter Henry Rolfs, s/n, CCBII, Campus Universitário, CEP 36570-900, Viçosa, MG, Brasil.

Synadenium grantii is a Euphorbiaceae plant commonly found in Brazil, known as Janaúba or Leitosinha, whose latex is traditionally used for several purposes. However, it is not known whether the nematicidal action of this plant latex occurs due to the action of proteases. The present work aims to evaluate the nematicidal activity of proteases from Synadenium grantii latex on Meloidogyne incognita and Panagrellus redivivus. Read More

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http://dx.doi.org/10.1590/1519-6984.188129DOI Listing
October 2018
27 Reads

Reproductive biology of pequira Bryconamericus stramineus (Eigenmann, 1908) in Funil Reservoir-MG, Brazil.

Braz J Biol 2018 Oct 29. Epub 2018 Oct 29.

Departamento de Bilogia, Universidade Federal de Lavras - UFLA, Pc Prof. Edmir Sa Santos, s/n, Câmpus Universitário, CP 3037, CEP 37200-000, Lavras, MG, Brasil.

In order to evaluate aspects of reproductive biology of the "pequira" ( Bryconamericus stramineus) in the elevator of the Funil Dam - MG, fish capture was carried out from November 2008 to January 2009 and 317 individuals were collected. The mean standard length (SL) of the population was 4.96 cm and mean weight 1. Read More

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http://dx.doi.org/10.1590/1519-6984.186925DOI Listing
October 2018

Fish consumption on the Amazon: a review of biodiversity, hydropower and food security issues.

Braz J Biol 2019 Apr-Jun;79(2):345-357. Epub 2018 Oct 29.

Fenner School of Environment and Society, The Australian National University - ANU, B141, B48, B48A, Linnaeus Way, Acton ACT 2601, Canberra, Australia.

The lack of knowledge about the majority of fish species harvested in Amazonian small-scale fisheries, in association with impacts from hydroelectric power plants, may lead to biodiversity loss and a decrease in the protein food supply for riverine Amazonians. This study uses existing datasets on fisheries and riverine developmental projects to infer effects associated with fish losses where actual data and outcomes are not available. The targeted fish species' status may be regarded as either threatened or there being no knowledge of their conservation requirements, biology or ecology. Read More

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http://dx.doi.org/10.1590/1519-6984.186572DOI Listing
October 2018
14 Reads

Aquatic macrophytes and trophic interactions: a scientometric analyses and research perspectives.

Braz J Biol 2018 Oct 29. Epub 2018 Oct 29.

Laboratório de Interações Multitróficas - LIM, Programa de Pós-graduação em Biologia Vegetal, Departamento de Biociências, Universidade Federal de Pernambuco - UFPE, Av. Profº Moraes Rêgo, s/n, Cidade Universitária, CEP 50670-90, Recife, PE, Brasil.

Aquatic macrophytes have a recognized role in ecosystem structuring and an important position in trophic cascades interactions, whose understanding is to improve water quality. In recent years, the number of studies on the role of aquatic macrophytes in trophic webs and interactions has increased, but South America has made little progress in research in the area. In this study, we investigated the main gaps and perspectives for future studies on macrophytes and trophic interactions, analyzing global publications, especially those conducted by South American researchers. Read More

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http://dx.doi.org/10.1590/1519-6984.185505DOI Listing
October 2018

Phytochemical screening and in vitro antibacterial, antifungal, antioxidant and antitumor activities of the red propolis Alagoas.

Braz J Biol 2019 Jul-Sep;79(3):452-459. Epub 2018 Oct 29.

Centro Universitário Cesmac - CESMAC, Rua Cônego Machado, Farol, CEP 57051-160, Maceió, AL, Brasil.

The study aimed to evaluate the antimicrobial activity, antioxidant, toxicity and phytochemical screening of the Red Propolis Alagoas. Antimicrobial activity was evaluated by disk diffusion method. Determination of antioxidant activity was performed using the DPPH assay (1. Read More

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http://dx.doi.org/10.1590/1519-6984.182959DOI Listing
October 2018
3 Reads

Pollen as a component of the diet of Doru luteipes (Scudder, 1876) (Dermaptera: Forficulidade).

Braz J Biol 2018 Oct 18. Epub 2018 Oct 18.

Laboratório de Entomologia, Centro Nacional de Pesquisa de Milho e Sorgo - EMBRAPA, Rodovia MG-424, Km 45, CP 285 e 151, CEP 35701-970, Sete Lagoas, MG, Brasil.

The properties of maize pollen in the diet of Doru luteipes were determined by biological responses of the predator feeding on natural preys and artificial diet. The biological parameters of D. luteipes fed on Spodoptera frugiperda (Smith, 1797) eggs, maize pollen, Rhopalosiphum maidis (Fitch, 1856) + maize pollen and R. Read More

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http://dx.doi.org/10.1590/1519-6984.184072DOI Listing
October 2018
3 Reads

Density-dependent seed predation in Attalea geraensis Barb. Rodr. (Arecaceae) caused by bruchid beetles in the Brazilian Cerrado.

Authors:
J Ragusa-Netto

Braz J Biol 2018 Oct 18. Epub 2018 Oct 18.

Departamento de Ciências Naturais, Universidade Federal de Mato Grosso do Sul - UFMS, Campus Três Lagoas, Avenida Ranulpho Marques Leal, 3484, CP 210, CEP 79610-100, Três Lagoas, MS, Brasil.

Palms are an important component of Neotropical communities as they are often diverse and abundant. In some areas, palms occur in high density and act as limiting factor in tree recruitment by limiting tree seedling and sapling abundance. In this study, I evaluated the intensity of seed mortality caused by insects in Attalea geraensis, in a large area of preserved Cerrado (Serra do Cabral, MG, Brazil) during wet season when both A. Read More

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http://dx.doi.org/10.1590/1519-6984.183318DOI Listing
October 2018

Acoustic niche partitioning in an anuran community from the municipality of Floriano, Piauí, Brazil.

Braz J Biol 2018 Oct 18. Epub 2018 Oct 18.

Universidade Federal do Piauí - UFPI, Campus Amilcar Ferreira Sobral, BR 343, Km 3,5, CEP 64800-000, Floriano, PI, Brasil.

Vocalizations are an important trait for the identification of cryptic and/or closely related amphibian species. Different vocalizations also contribute to partitioning of the acoustic space by sympatric species. This study aimed to describe the advertisement calls of anurans in a pond of the municipality of Floriano, State of Piauí, Brazil, and infer the acoustic niche partitioning of amphibians. Read More

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http://dx.doi.org/10.1590/1519-6984.180399DOI Listing
October 2018
1 Read

Molecular identification and microbiological evaluation of isolates from equipments and food contact surfaces in a hospital Food and Nutrition Unit.

Braz J Biol 2019 Apr-Jun;79(2):191-200. Epub 2018 Oct 18.

Departamento de Ciência dos Alimentos, Instituto de Ciência e Tecnologia de Alimentos - ICTA, Universidade Federal do Rio Grande do Sul - UFRGS, Avenida Bento Gonçalves, 9500, Campus do Vale, CEP 91501-970, Porto Alegre, RS, Brasil.

The hygienic and sanitary control in Food and Nutrition Units (FNU) is considered a standard procedure to produce adequate meals and reduce the risk of foodborne diseases and hospital infections. This study aimed to evaluate the isolation and identification of bacteria from equipment and food contact surfaces in a hospital FNU as well as to evaluate the sanitary condition. Likewise, it was analyzed the adhesion of the microorganisms on polyethylene cutting boards. Read More

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http://dx.doi.org/10.1590/1519-6984.175350DOI Listing
October 2018
13 Reads

Chemical composition of essential oils from the apiaceae family, cytotoxicity, and their antifungal activity in vitro against candida species from oral cavity.

Braz J Biol 2019 Jul-Sep;79(3):432-437. Epub 2018 Oct 11.

Laboratório de Parasitologia, Departamento de Microbiologia e Parasitologia, Institute de Biologia, Universidade Federal de Pelotas - UFPel, s/n, Capão do Leão, CEP 96010-900, Pelotas, RS, Brasil.

The aims of this research were: evaluate the chemical composition and the cytotoxicity of the Cuminum cyminum (cumin), Anethum graveolens (dill), Pimpinella anisum (anise) and Foeniculum vulgare (fennel) essential oils, as well as their antifungal activity in vitro against ten Candida spp. isolates. The chemical composition of the oils was analyzed by means of gas chromatography coupled with mass spectrometry (GC/MS). Read More

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http://dx.doi.org/10.1590/1519-6984.182206DOI Listing
October 2018
2 Reads

An ovotestis event in the gonochoric sea urchin Loxechinus albus (Echinodermata: Echinoidea).

Braz J Biol 2019 Jul-Sep;79(3):548-551. Epub 2018 Oct 8.

Facultad de Ciencias del Mar - FACIMAR, Universidad Autonoma de Sinaloa - UAS, CP 80000, Mazatlan, Sinaloa, Mexico.

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http://dx.doi.org/10.1590/1519-6984.188534DOI Listing
October 2018
3 Reads

Use of eugenol for anesthesia of lesser guitarfish Zapteryx brevirostris (Rhinobatidae).

Braz J Biol 2019 Jul-Sep;79(3):516-520. Epub 2018 Oct 8.

Núcleo de Pesquisa e Desenvolvimento do Litoral Norte, Instituto de Pesca, Estrada Joaquim Lauro de Monte Claro Neto, 2275, CEP 11680-000, Ubatuba, SP, Brasil.

Anesthesia can be utilized as a non-lethal procedure to allow easy handling of teleosts and elasmobranchs in captivity or in the wild. For this, anesthetic protocols need to be established according to the species. The aim of this study was to determine the ideal concentration of eugenol for anesthesia of Zapteryx brevirostris. Read More

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http://dx.doi.org/10.1590/1519-6984.186755DOI Listing
October 2018
14 Reads

Does intensive feeding frequency affect growth performance of common snook Centropomus undecimalis (Bloch, 1792)?

Braz J Biol 2019 Jul-Sep;79(3):505-509. Epub 2018 Oct 8.

Instituto de Pesca, Agência Paulista de Tecnologia do Agronegócio, Secretaria da Agricultura e Abastecimento, Av. Cais do Porto, 2275, CEP 11680-000, Ubatuba, SP, Brasil.

Salt water recirculation systems using automatic feeders are a new frontier for marine aquaculture. It is possible to decrease the vulnerability of the traditional fish farming in open systems and reduce wasteful feeding and discharge of effluents, as well as increase the economic returns. An experiment with common snook fingerings (4. Read More

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http://dx.doi.org/10.1590/1519-6984.186394DOI Listing
October 2018

Biotic potential and reproductive parameters of Spodoptera cosmioides (Walker) (Lepidoptera: Noctuidae) in the laboratory.

Braz J Biol 2019 Jul-Sep;79(3):488-494. Epub 2018 Oct 8.

Faculdade UnB Planaltina, Universidade de Brasília - UnB, Área Universitária 1, Vila Nossa Senhora de Fátima, CEP 73345-010, Planaltina, DF, Brasil.

In this study we evaluate the biotic potential and reproductive parameters of Spodoptera cosmioides (Walker, 1858) under controlled conditions (25 ± 1 °C, 70 ± 10% RH and 14 hour photophase). Females, on average, (14.433 days) did not live significantly longer than their male counterparts (13. Read More

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http://dx.doi.org/10.1590/1519-6984.184595DOI Listing
October 2018
1 Read

First record of Nais schubarti Marcus, 1944 (Oligochaeta: Naididae) in the State of São Paulo.

Braz J Biol 2019 Jul-Sep;79(3):552-553. Epub 2018 Oct 4.

Departamento de Hidráulica e Saneamento, Escola de Engenharia de São Carlos - EESC, Universidade de São Paulo - USP, CP 359, CEP 13566-590, São Carlos, SP, Brasil.

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http://dx.doi.org/10.1590/1519-6984.189084DOI Listing
October 2018

Ciliated microeukaryotes (Alveolata: Ciliophora) of a lotic urban system located in Minas Gerais - Brazil.

Braz J Biol 2019 Jul-Sep;79(3):543-547. Epub 2018 Oct 4.

Laboratório de Protozoologia, Instituto de Ciências Biológicas, Universidade Federal de Juiz de Fora - UFJF, Rua José Lourenço Kelmer, s/n, Martelos, CEP 36036-900, Juiz de Fora, MG, Brasil.

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http://dx.doi.org/10.1590/1519-6984.187301DOI Listing
October 2018
1 Read

Rubus sellowii Cham. & Schlitdl. (Rosaceae) fruit nutritional potential characterization.

Braz J Biol 2019 Jul-Sep;79(3):510-515. Epub 2018 Oct 4.

Programa de Pós-graduação em Biotecnologia, Universidade do Vale do Taquari - Univates, Av. Avelino Talini, 171, CEP 95900-000, Universitário, Lajedo, RS, Brasil.

The aim of this study was to know the physical, chemical and nutritional characteristics of Rubus sellowii (Rosaceae) fruits, known as blackberry, native plant mainly to Rio Grande do Sul State (RS), Brazil. For this, three different populations of this plant were selected and the fruits were analyzed through moisture, ash, titratable acidity, pH, lipids, fibers, carbohydrates, proteins, carotenoids, lycopene, ascorbic acid, aminogram and in vitro digestibility. Fruits showed high acidity (3. Read More

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http://dx.doi.org/10.1590/1519-6984.186435DOI Listing
October 2018
9 Reads

Phytosociological contrast of ferns and lycophytes from forest fragments with different surroundings matrices in southern Brazil.

Braz J Biol 2019 Jul-Sep;79(3):495-504. Epub 2018 Oct 4.

Instituto de Ecología, A.C., Red de Ecología Funcional, Carretera antigua a Coatepec-351, 91070 Xalapa, Veracruz, México.

Forest edges typically exhibit higher luminosity and lower humidity than the forest interior, resulting in an abiotic gradient. However, the degree of abiotic difference can be affected from the type of the matrix, influencing the selection of species. We compared the floristic and phytosociological structure of understory communities of ferns and lycophytes of the edge and interior of three forest sites influenced by different types of surrounding matrices (natural field, Pinus plantation, and cultivation of crops). Read More

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http://dx.doi.org/10.1590/1519-6984.186077DOI Listing
October 2018
1 Read

Environmental impacts of a reduced flow stretch on hydropower plants.

Braz J Biol 2019 Jul-Sep;79(3):470-487. Epub 2018 Oct 4.

Programa de Planejamento Energético - PPE, Instituto Alberto Luiz Coimbra de Pós-graduação e Pesquisa de Engenharia - COPPE, Universidade Federal do Rio de Janeiro - UFRJ, Avenida Horácio de Macedo, 2030, Centro de Tecnologia, Bloco C, 2º andar, sala 211, Cidade Universitária, CEP 21941-914, Rio de Janeiro, RJ, Brasil.

In Brazil, given its privileged hydrology, the unexplored economic use of water resources has many dimensions, such as hydroelectric power. This energy will face increasingly rigorous social and environmental impact assessments (40% of potential is located in the Amazon region). Hydropower inventory studies conducted over decades, with solutions such as ecological river flows, that flood smaller areas and reduce natural river flows modifications, are being reviewed. Read More

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http://dx.doi.org/10.1590/1519-6984.183883DOI Listing
October 2018
1 Read

Frequency of Clustered Regularly Interspaced Short Palindromic Repeats (CRISPRs) in non-clinical Enterococcus faecalis and Enterococcus faecium strains.

Braz J Biol 2019 Jul-Sep;79(3):460-465. Epub 2018 Oct 4.

Programa de Pós-graduacao em Microbiologia Agricola e do Ambiente, Departamento de Microbiologia, Imunologia e Parasitologia, Universidade Federal do Rio Grande do Sul - UFRGS, Sarmento Leite, 500, sala 216, CEP 90050-170, Porto Alegre, RS, Brasil.

The fidelity of the genomes is defended by mechanism known as Clustered Regularly Interspaced Short Palindromic Repeats (CRISPR) systems. Three Type II CRISPR systems (CRISPR1- cas, CRISPR2 and CRISPR3-cas) have been identified in enterococci isolates from clinical and environmental samples. The aim of this study was to observe the distribution of CRISPR1-cas, CRISPR2 and CRISPR3-cas in non-clinical strains of Enterococcus faecalis and Enterococcus faecium isolates from food and fecal samples, including wild marine animals. Read More

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http://dx.doi.org/10.1590/1519-6984.183375DOI Listing
October 2018
1 Read

Xiphidiocercariae from naturally infected Lymnaea columella (Mollusca, Gastropoda) in urban area: morphology and ultrastructure of the larvae and histological changes in the mollusc host.

Braz J Biol 2019 Jul-Sep;79(3):446-451. Epub 2018 Oct 4.

Área de Biofísica, Departamento de Ciências Fisiológicas, Instituto de Ciências Biológicas e da Saúde, Universidade Federal Rural do Rio de Janeiro - UFRRJ, Rodovia BR 465, Km 07, CEP 23890-000, Seropédica, RJ, Brasil.

Urban agriculture is very common in the cities, as Rio de Janeiro and adjacencies, being important as economic activity. However, this practice can create appropriate conditions for establishment and maintenance of life cycle of many parasites. Lymneid snails can act as intermediate hosts of many trematodes species, including those that infect humans and wild and domestic. Read More

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http://dx.doi.org/10.1590/1519-6984.182501DOI Listing
October 2018
10 Reads