2,636 results match your criteria Brazilian journal of biology = Revista brasleira de biologia[Journal]


Feeding aspects of Knodus heteresthes (Eigenmann, 1908) and Moenkhausia lepidura (Kner, 1858) (Characiformes, Characidae) in the Teles Pires and Juruena Rivers, southern Amazon.

Braz J Biol 2020 May 29. Epub 2020 May 29.

Centro de Pesquisa de Limnologia, Biodiversidade e Etnobiologia do Pantanal, Universidade do Estado de Mato Grosso, Cáceres, MT, Brasil.

The composition of the diet of two species of characids (Knodus heteresthes and Moenkhausia lepidura) was evaluated in the Teles Pires and Juruena Rivers, sampled in September and October 2016. We analyzed 226 stomachs of K. heteresthes and 425 of M. Read More

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http://dx.doi.org/10.1590/1519-6984.226136DOI Listing

Danger beyond the catches: a review of conservation threats posed by commercial and non-commercial fisheries in Guaratuba Bay, southern Brazil.

Authors:
P T C Chaves

Braz J Biol 2020 May 29. Epub 2020 May 29.

Departamento de Zoologia, Universidade Federal do Paraná, Curitiba, PR, Brasil.

Comparisons between the implications of commercial and recreational fisheries for estuarine conservation have been a topic of debate. A review on the available data from Guaratuba Bay, Southern Brazil, identifies six threats for conservation, other than those concerning the fishing effort on target resources. Differing from the popular view that fishing for pleasure could be innocuous for the environment, the identified threats concern both commercial and non-commercial fisheries: (1) catching of reproductive individuals; (2) catch of big old fat fecund females; (3) loss and abandonment of fishing gears; (4) use of natural baits; (5) bycatch of rays, turtles and non-target finfish; and (6) bad practices associated with catch-and-release or discarding. Read More

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http://dx.doi.org/10.1590/1519-6984.225063DOI Listing

Arabidopsis CK2 family gene CKB3 involved in abscisic acid signaling.

Braz J Biol 2020 May 29. Epub 2020 May 29.

State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Biology, Hunan University, Changsha, PR China.

CKB3 is a regulatory (beta) subunit of CK2. In this study Arabidopsis thaliana homozygous T-DNA mutant ckb3 was studied to understand the role of CKB3 in abscisic acid (ABA) signaling. The results shown: CKB3 was expressed in all organs and the highest expression in the seeds, followed by the root. Read More

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http://dx.doi.org/10.1590/1519-6984.225345DOI Listing

Community ecology of the metazoan parasites of the Atlantic thread herring, Opisthonema oglinum (Lesueur, 1818) (Actinopterygii: Clupeidae) from the Sepetiba Bay, Rio de Janeiro, Brazil.

Authors:
L Chaves F Paschoal

Braz J Biol 2020 May 29. Epub 2020 May 29.

Laboratório de Parasitologia Animal, Centro de Pesquisas em Biologia, Universidade Castelo Branco, Rio de Janeiro, RJ, Brasil.

This study aimed to evaluate the parasitic fauna of Opisthonema oglinum (Lesueur, 1818) from Southeastern Brazil. Between September 2017 and March 2018, a total of 100 specimens of O. oglinum from the Sepetiba Bay, Rio de Janeiro, Brazil (22°54'S, 43°34'W) were examined. Read More

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http://dx.doi.org/10.1590/1519-6984.229814DOI Listing

Baseline growth of the Trinidad freshwater crab Poppiana dentata () under laboratory conditions.

Braz J Biol 2020 May 29. Epub 2020 May 29.

Department of Life Sciences, Faculty of Science and Technology, The University of the West Indies, West Indies, Trinidad and Tobago.

Poppiana dentata (Randall, 1840) is widely distributed throughout riverine habitats in Trinidad. However, there is a scarcity of information on the biology of this species. This study provides the first baseline examination that describes growth aspects for P. Read More

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http://dx.doi.org/10.1590/1519-6984.226514DOI Listing

A New Maximum Size Record of the Shi Drum (Umbrina cirrosa Linnaeus, 1758) for Aegean Sea.

Braz J Biol 2020 May 29. Epub 2020 May 29.

Faculty of Fisheries, Kastamonu University, Kastamonu, Turkey.

The present study has been conducted to find out new findings on maximum length and weight values of Umbrina cirrosa in the Bay of Saros (Northern Aegean Sea, Turkey). On September, 11, 2016, a single specimen of Umbrina cirrosa with 68.8 cm total length and 2600. Read More

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http://dx.doi.org/10.1590/1519-6984.231643DOI Listing

Fecundity of Chub Mackerel (Scomber japonicus Houttuyn, 1782) in the Aegean Sea.

Authors:
Ö Cengiz

Braz J Biol 2020 May 29. Epub 2020 May 29.

Faculty of Fisheries, Van Yüzüncü Yıl University, Van, Turkey.

This study was carried out in April - June 2014 to determine absolute fecundity (F) of the chub mackerel (Scomber japonicus Houttuyn, 1782) in Saros Bay (Aegean Sea, Turkey). The relations between the absolute fecundity and total length, total weight and age of the chub mackerel females were estimated as F=0.0318TL4. Read More

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http://dx.doi.org/10.1590/1519-6984.230716DOI Listing

Prevalence of autosomal dominant polycystic kidney disease in Persian and Persian-related cats in Brazil.

Braz J Biol 2020 May 29. Epub 2020 May 29.

Departamento de Patologia, Faculdade de Medicina Veterinária e Zootecnia, Universidade de São Paulo, São Paulo, SP, Brasil.

Autosomal dominant polycystic kidney disease (ADPKD) is the most common genetic disease in cats. However, scarce data on its prevalence are available in Brazil. Persian cats and Persian-related breeds were assessed by molecular genotyping for a C to A transversion in exon 29 of PKD1 gene to determine ADPKD prevalence in a Brazilian population. Read More

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http://dx.doi.org/10.1590/1519-6984.227131DOI Listing

Molecular epidemiology of Pseudomonas aeruginosa isolated from lower respiratory tract of ICU patients.

Braz J Biol 2020 May 29. Epub 2020 May 29.

Shaanxi Institute for Food and Drug Control, Xi'an, Shaanxi, China.

Lower respiratory tract infections (LRTIs) caused by Pseudomonas aeruginosa are the most common infection among hospitalized patients, associated with increased levels of morbidity, mortality and attributable health care costs. Increased resistant Pseudomonas worldwide has been quite meaningful to patients, especially in intensive care unit (ICUs). Different species of Pseudomonas exhibit different genetic profile and varied drug resistance. Read More

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http://dx.doi.org/10.1590/1519-6984.226309DOI Listing

Brasilia tapaculo (Scytalopus novacapitalis) seasonality and site occupancy in altitudinal riparian environments after non-natural burnings and feral pig invasion in Serra da Canastra National Park, Brazil.

Braz J Biol 2020 May 20. Epub 2020 May 20.

Departamento de Ecologia e Biologia Evolutiva, Programa de Pós-Graduação em Ecologia e Recursos Naturais, Universidade Federal de São Carlos, São Carlos, SP, Brasil.

The Brasilia Tapaculo, Scytalopus novacapitalis Sick, 1958, is a rare, geographically restricted, and endangered bird species that inhabits riparian vegetation of Cerrado, mainly Gallery Forests. In Serra da Canastra National Park, southeastern Brazil, wetlands are under threat due to frequent non-natural burnings and invasion by feral pigs, Sus scrofa, Linnaeus, 1758. We aimed to evaluate the possible effects of seasonal variations on S. Read More

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http://dx.doi.org/10.1590/1519-6984.223953DOI Listing

Staphylococcus aureus growth delay after exposure to low fluencies of blue light (470 nm).

Braz J Biol 2020 May 20. Epub 2020 May 20.

Unidade Acadêmica Especial de Ciências da Saúde, Programa de Pós-graduação em Ciências Aplicadas à Saúde, Universidade Federal de Goiás, Jataí, GO, Brasil.

Antibiotic resistance is one of the greatest challenges to treat bacterial infections worldwide, leading to increase in medical expenses, prolonged hospital stay and increased mortality. The use of blue light has been suggested as an innovative alternative to overcome this problem. In this study we analyzed the antibacterial effect of blue light using low emission parameters on Staphylococcus aureus cultures. Read More

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http://dx.doi.org/10.1590/1519-6984.226473DOI Listing

Structure and spatial distribution of the rotifer assemblages along a tropical reservoir.

Braz J Biol 2020 May 20. Epub 2020 May 20.

Centro de Ciências Agrárias, Ambientais e Biológicas, Universidade Federal do Recôncavo da Bahia, Cruz das Almas, BA, Brasil.

The construction of reservoirs is a common practice in the world. These systems modify the hydric landscape and alter the flow of rivers, becoming lotic environments in lentic. Here we investigated the structure and spatial distribution of rotifers along a tropical reservoir. Read More

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http://dx.doi.org/10.1590/1519-6984.226446DOI Listing

Diet of a bromeligenous species of treefrog in the Brazilian semiarid.

Braz J Biol 2020 May 20. Epub 2020 May 20.

Departamento de Ciências Biológicas, Universidade Estadual do Sudoeste da Bahia, Jequié, BA, Brasil.

Phyllodytes tuberculosus is a bromeligenous anuran species whose geographic distribution is restricted to areas of the Caatinga and to transition zones between Caatinga and Atlantic Forest in the central-south of the state of Bahia. Its existence in close relationship with bromeliads and its occurrence in dry and highly seasonal environments drove us to the supposition that species is opportunistic/generalist regard to diet. We collected the items present in the stomach of 43 P. Read More

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http://dx.doi.org/10.1590/1519-6984.229742DOI Listing

BPA toxicity during development of zebrafish embryo.

Braz J Biol 2020 May 20. Epub 2020 May 20.

Programa de Pós-graduação em Ciências Aplicadas à Saúde, Laboratório de Genética e Biologia Molecular, Universidade Federal de Goiás, Jataí, GO, Brasil.

Bisphenol A (BPA) is a monomer used in the production of polycarbonate, a polymer commonly found in plastics, epoxy resins and thermal papers. The presence of BPA in food, water, air and dust has been of great concern in recent years not only due to environmental and ecological issues but also because of its supposed risk to public health related to its mutagenic and carcinogenic potential. In this study we evaluated the toxicity of bisphenol A in zebrafish embryos (Danio rerio) and determined the 50% lethal concentration (LC50) of this chemical. Read More

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http://dx.doi.org/10.1590/1519-6984.230562DOI Listing

Change in malate dehydrogenase and alpha amylase activities in Rubus fruticosus and Valeriana jatamansi treated granary weevil, Sitophilus granarius.

Braz J Biol 2020 Jun 1. Epub 2020 Jun 1.

Department of Biological Science, Karakoram International University, Gilgit Baltistan, Pakistan.

Poor storage conditions provide favorable environment to stored grain pests for their growth. The bio-pesticides are the best alternatives to synthetic pesticides. Present study was conducted to compare toxicity of Rubus fruticosus and Valeriana jatamansi against granary weevil, Sitophilus granarius and subsequent changes in enzyme activity responsible for grain damage. Read More

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http://dx.doi.org/10.1590/1519-6984.226952DOI Listing

Reproduction of Hypoptopoma inexspectatum (Holmberg, 1893) (Siluriformes, Loricariidae) in the Southern Pantanal Floodplain, Upper Paraguay River Basin, Brazil.

Braz J Biol 2020 Jun 1. Epub 2020 Jun 1.

Laboratório de Ecologia, Centro de Estudos em Recursos Naturais, Universidade Estadual de Mato Grosso do Sul, Dourados, MS, Brasil.

This work aimed to describe the reproductive biology of Hypoptopoma inexspectatum in southern Pantanal. A total of 538 individuals were sampled and analyzed from February 2009 through January 2011 in southern Pantanal. We did not observe differences in sex-ratio, and both sexes presented positive allometric length/weight relationship (LWR). Read More

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http://dx.doi.org/10.1590/1519-6984.225352DOI Listing

How do pesticides affect bats? - A brief review of recent publications.

Braz J Biol 2020 May 15. Epub 2020 May 15.

Departamento de Biologia Geral, Universidade Federal de Viçosa, Viçosa, MG, Brazil.

Increased agricultural production has been increased use of pesticides worldwide, which poses a threat to both human and environmental health. Recent studies suggest that several non-target organisms, from bees to mammals, show a wide variety of toxic effects of pesticides exposure, including impaired behavior, development and reproduction. Among mammals, bats are usually a neglected taxon among ecotoxicological studies, although they play important ecological and economical roles in forest ecosystems and agriculture through to seed dispersal and insect population control. Read More

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http://dx.doi.org/10.1590/1519-6984.225330DOI Listing

Murinometric measurements and retroperitoneal adipose tissue in young rats exposed to the high-fat diet: Is there correlation?

Braz J Biol 2020 May 15. Epub 2020 May 15.

Programa de Pós-Graduação em Alimento, Nutrição e Saúde, Escola de Nutrição, Universidade Federal da Bahia, Salvador, BA, Brasil.

Aim This study aimed to verify the correlation between murine measurements and retroperitoneal adipose tissue in rats exposed to the high-fat diet.

Material And Methods: Wistar male adult rats, descendants of mothers who consumed a high-fat diet during pregnancy and lactation and fed the same diet after weaning were used. At 60 days of life, body weight, longitudinal axis and waist circumference (WC) were measured. Read More

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http://dx.doi.org/10.1590/1519-6984.221405DOI Listing

Epidural anesthesia in Eira barbara Linnaeus, 1758 (Carnivora: Mustelidae).

Braz J Biol 2020 May 15. Epub 2020 May 15.

Departamento de Anestesiologia, Faculdade de Medicina de Botucatu, Universidade Estadual Paulista, Botucatu, SP, Brasil.

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http://dx.doi.org/10.1590/1519-6984.225891DOI Listing

Clinical assessment of acid-base balance in Netherland Dwarf rabbit.

Braz J Biol 2020 May 15. Epub 2020 May 15.

Department of Animal Pathology, College of Veterinary Medicine, University of Santiago de Compostela, Lugo, Spain.

Pet rabbits have increased their popularity in a lot of countries. However, most of the laboratory profiles in rabbit medicine come from the observations made in rabbit as biomodels or meat production. So that further researches are necessary to obtain reference values for hematology and biochemical profiles in pet rabbits and the different breeds, especially, in relation to acid-base balance. Read More

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http://dx.doi.org/10.1590/1519-6984.219754DOI Listing

Tetrastichus howardi (Hymenoptera: Eulophidae): first report of parasitism in Oxydia vesulia (Lepidoptera: Geometridae).

Braz J Biol 2020 May 15. Epub 2020 May 15.

Departamento de Proteção Vegetal, Faculdade de Ciências Agronômicas, Universidade Estadual Paulista, Botucatu, SP, Brasil.

The adaptation of native lepidopteran species to eucalyptus plantations reduces the productivity of this crop in Brazil. Oxydia vesulia Cramer (Lepidoptera: Geometridae) is a secondary pest, frequently reported in eucalyptus plantations with population outbreaks and economic damages. Methods of biological control of this pest may include the use of the exotic pupae endoparasitoid Tetrastichus howardi Olliff (Hymenoptera: Eulophidae), reported as efficient to controlling lepidopteran pests. Read More

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http://dx.doi.org/10.1590/1519-6984.228541DOI Listing

Chemical compositions, radical scavenging capacities and antimicrobial activities in seeds of Satureja hortensis L. and Mentha spicata L. subsp. spicata from Turkey.

Braz J Biol 2020 May 11. Epub 2020 May 11.

Department of Biology, Faculty of Science, Munzur University, Tunceli, Turkey.

The present study determined some biological compounds, radical scavenging activity and antimicrobial capacity in seeds of Satureja hortensis L. and Mentha spicata L. subsp. Read More

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http://dx.doi.org/10.1590/1519-6984.224654DOI Listing

Roosting ecology and morphometric analysis of Pteropus medius (Indian flying fox) in Lower Dir, district, Pakistan.

Braz J Biol 2020 May 11. Epub 2020 May 11.

Department of Zoology, University of Malakand, Lower Dir, Pakistan.

The present study was conducted to explore morphometric variations of Pteropus medius (the Indian flying fox) and the roosting trees in Lower Dir, Pakistan. The bats were captured from Morus alba, Morus nigra, Brousonetia papyrifera, Pinus raxburghii, Hevea brasiliensis, Platanus orientalis, Populous nigra, Melia azedarach, Eucalyptus camaldulensis and Grevillea robusta through sling shot and mess net methods. A total of 12 bats were studied for the differential morphological features based on age and sex. Read More

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http://dx.doi.org/10.1590/1519-6984.221935DOI Listing
May 2020
0.783 Impact Factor

Erratum.

Authors:

Braz J Biol 2020 Apr 22. Epub 2020 Apr 22.

[This corrects the article doi: 10.1590/1519-6984.221849]. Read More

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http://dx.doi.org/10.1590/1519-6984.ER221849DOI Listing

Rootstock mediates transcriptional regulation of citrulline metabolism in grafted watermelon.

Braz J Biol 2020 Apr 22. Epub 2020 Apr 22.

Zhengzhou Fruit Research Institute, Chinese Academy of Agricultural Sciences, Zhengzhou, Henan 450009, China.

Citrulline is a non-essential amino acid, involved in key biological functions in plants and humans. Rootstocks have a major impact on citrulline accumulation in grafted watermelon. Information regarding rootstock induced changes in citrulline metabolism is elusive. Read More

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http://dx.doi.org/10.1590/1519-6984.223633DOI Listing

Impact of inorganic salts on vase life and postharvest qualities of the cut flower of Perpetual Carnation.

Braz J Biol 2020 Apr 22. Epub 2020 Apr 22.

Key Laboratory of Plant-Microbe Interactions, Department of Life Science, Shangqiu Normal University, Shangqiu, China.

This study was carried out in the laboratory of Shangqiu Institute of Technology, Henan to investigate the effect of a different combination of inorganic salt on the quality and physiological characteristics of cut flowers (CFs) of Perpetual Carnation. Furthermore, to find out the best preservation solution of inorganic salt that can enhance the ornamental value of CFs of Carnation and prolong its vase life. Sucrose, 8-hydroxyquinoline, paclobutrazol, salicylic acid and different kinds of inorganic salts were added as a preservation solution. Read More

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http://dx.doi.org/10.1590/1519-6984.221502DOI Listing

Diagnosis and treatment of HEp-2 cells contaminated with mycoplasma.

Braz J Biol 2020 Apr 22. Epub 2020 Apr 22.

Departamento de Ciências Biológicas, Faculdade de Ciências e Letras, Universidade Estadual Paulista - UNESP, Av. Dom Antônio, 2100, Parque Universitário, CEP 19806-900, Assis, SP, Brasil.

Contamination of primary and cell cultures by mycoplasmas is one of the main economic and biological pitfalls in basic research, diagnosis and manufacture of biotechnological products. It is a common issue which may be difficult to conduct surveillance on. Mycoplasma presence may affect several physiological parameters of the cell, besides being considered an important source of inaccurate and/or non-reproducible scientific results. Read More

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http://dx.doi.org/10.1590/1519-6984.215721DOI Listing

Genotypical characterization of thermotolerant coliforms isolated from food produced by a Solidarity Economic Venture of Bahia (Brazil).

Braz J Biol 2020 Apr 6. Epub 2020 Apr 6.

Programa de Pós-graduação em Microbiologia Agrícola, Centro de Ciências Agrárias, Ambientais e Biológicas, Universidade Federal do Recôncavo da Bahia (UFRB), Rua Rui Barbosa, 710, Centro, CEP 44380-000, Cruz das Almas, BA, Brasil.

Many Solidarity Economic Venture (SEV) are family farmers who seek to add value to production through artisanal processing, which can lead to food contamination. Thus, this study aimed to genotypically characterize thermotolerant coliforms (TtC) strains from food produced by local agribusinesses of SEV during January to April 2019. Samples from thirteen production units (PU) from the SEV were submitted to a microbiological analysis of thermotolerant coliforms (AFNOR 3M1/2 - 09/89), using a fast count method in Petrifilm™ dishes. Read More

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http://dx.doi.org/10.1590/1519-6984.226833DOI Listing

Pathogenicity of Steinernema brazilense (Rhabditida: Steinernematidae) to Gonipterus platensis (Coleoptera: Curculionidae) prepupae.

Braz J Biol 2020 Apr 6. Epub 2020 Apr 6.

Departamento de Produção Vegetal, Universidade Estadual Paulista "Júlio de Mesquita Filho" - UNESP, CEP 18603-970, Botucatu, SP, Brasil.

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http://dx.doi.org/10.1590/1519-6984.224905DOI Listing

Multiple comparisons of diversity indices invaded by Lantana camara.

Braz J Biol 2020 Mar 30. Epub 2020 Mar 30.

Department of Biology, Allama Iqbal Open University, Islamabad-44000, Pakistan.

Current study assessed the impact of Lantana camara invasion on native plant diversity in Pothohar region of Pakistan. The approach used for study was random samplings and comparisons of diversity indices [number of species (S), abundance (N), species richness (R), evenness (Jꞌ), Shannon diversity index (Hꞌ) and Simpson index of dominance (λ)] with two categorical factors i.e. Read More

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http://dx.doi.org/10.1590/1519-6984.222147DOI Listing

First record of Trachyderes succinctus succinctus (Linnaeus, 1758) (Coleoptera: Cerambycidae) in Khaya ivorensis A. Chev. (Meliaceae) in Brazil.

Braz J Biol 2020 Mar 23. Epub 2020 Mar 23.

Departamento de Entomologia e Acarologia, Escola Superior de Agricultura "Luiz de Queiroz" - ESALQ, Universidade de São Paulo - USP, CEP 13418-900, Piracicaba, SP, Brasil.

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http://dx.doi.org/10.1590/1519-6984.226537DOI Listing

Behavioral aspects of waterbirds.

Braz J Biol 2020 Mar 13. Epub 2020 Mar 13.

Programa de Pós-graduação em Ecologia e Recursos Naturais, Universidade Federal de São Carlos, São Carlos, SP, Brasil.

Estuaries are used by waterbirds as foraging, resting and nesting sites, serving also as shelter for migratory birds. The dynamics of this avifauna in an aquatic environment may be associated with the differences of time of day, tide height, temperature, wind speed and use of the site by different species. This study had the objective of evaluating behavioral aspects of aquatic birds, relating the influence of environmental variables with their activities. Read More

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http://dx.doi.org/10.1590/1519-6984.225048DOI Listing

Record of Haplotaxis aedeochaeta Brinkhurst & Marchese, 1987 (Oligochaeta: Haplotaxidae) in a conservation unity in the state of São Paulo.

Braz J Biol 2020 Mar 13. Epub 2020 Mar 13.

Departamento de Hidráulica e Saneamento, Escola de Engenharia de São Carlos, Universidade de São Paulo, São Carlos, SP, Brasil.

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http://dx.doi.org/10.1590/1519-6984.225164DOI Listing

Histopathological studies of red palm weevil Rhynchophorus ferrugineus, (Olivier) larvae and adults to evaluate certain nano pesticides.

Braz J Biol 2020 Mar 9. Epub 2020 Mar 9.

Department of Economic Entomology and Pesticides, Faculty of Agriculture, Cairo University, Giza, Egypt.

Rhynchophorus ferrugineus (RPW) (Olivier) (Coleoptera: Curculionidae) is one of the most destructive pest of palm according to dozens of literature, a lot of effort have been made since three decades up to date to solve this problem, one of newest solution raised is using nano pesticides. Imidacloprid and Chloropyrophos and their nano form were tested against 10 days-old larvae and newly emerged adults of the red palm weevil. The pesticides had toxicological and pathological effects on Rh. Read More

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http://dx.doi.org/10.1590/1519-6984.227621DOI Listing

Efficiency of biological control for fall armyworm resistant to the protein Cry1F.

Braz J Biol 2020 Mar 9. Epub 2020 Mar 9.

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

Understanding the ecological and toxicological relationship between genetically modified cultivars (GM) and biological control agents is of great importance for discussions related to the compatability of GM cultivars and integrated management strategies for pest resistance. The present study evaluated the search behavior and predatory capacity of Orius insidiosus (Say) (Hemiptera: Anthocoridae) and Doru luteipes (Scudder) (Dermaptera: Forficulidae) on eggs and caterpillars of Spodoptera frugiperda (J. E. Read More

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http://dx.doi.org/10.1590/1519-6984.224774DOI Listing

Biological control in the germination of seeds from two species native of the Cerrado region.

Braz J Biol 2020 Mar 9. Epub 2020 Mar 9.

Laboratório de Cultura de Tecidos Vegetal, Instituto Federal Goiano - IF Goiano, Campus Rio Verde, Av. Sul Goiana, Km 01, Zona Rural, CEP 75900-000, Rio Verde, GO, Brasil.

Microorganisms have been efficiently used for the biological control of phytopathogens through the production of antimicrobial substances. However, the objectives of this work were: to study the germination of Butia purpurascens Glassman and Butia archeri Glassman seeds in different substrates, to select and identify the endophytic and rhizospheric bacterial isolates of B. purpurascens and B. Read More

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http://dx.doi.org/10.1590/1519-6984.222279DOI Listing

Some aspects of germination in Banisteriopsis variabilis B.Gates (Malpighiaceae).

Braz J Biol 2020 Mar 9. Epub 2020 Mar 9.

Centro de Ciências Agrárias, Universidade Federal de São Carlos - UFSCar, Via Anhanguera, Km 17, Pedras Preciosas, CEP 13600-970, Araras, SP, Brasil.

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http://dx.doi.org/10.1590/1519-6984.220556DOI Listing

Nutritive evaluation, metabolisable energy and digestible amino acid contents of different indigenous feedstuff for Nile tilapia (Oreochromis niloticus).

Braz J Biol 2020 Mar 9. Epub 2020 Mar 9.

Faculty of Veterinary Sciences, Bahauddin Zakariya University, Multan, Pakistan.

Three trials were executed to examine the nutritive profile, metabolisable energy and digestible amino acid (AA) contents of four indigenous feed ingredients including wheat (W), wheat middling (WM), canola meal (CM) and rapeseed meal (RSM) in Nile tilapia. Three samples of each test ingredient were collected from three different locations of Multan (MUL) and Sukkar (SKR), of Pakistan. The collected three samples were pooled thereafter to make a homogenous/ representative sample of each test ingredient from a particular study site. Read More

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http://dx.doi.org/10.1590/1519-6984.216198DOI Listing

Evaluation of the operational conditions in the production and morphology of Chlorella sp.

Braz J Biol 2020 Feb 21. Epub 2020 Feb 21.

Centro de Estudios y de Investigación en Biotecnología - CIBIOT, Facultad de Ingeniería Química, Universidad Pontificia Bolivariana, Cir. 1ª #70-01, of. Bloque 11-116, Medellín, Colombia.

It was evaluated the effect of operational conditions in the production of Chlorella sp. after its selection from genus Chlorella sp., Scenedesmus sp. Read More

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http://dx.doi.org/10.1590/1519-6984.228874DOI Listing
February 2020

Hummingbird (Aves: Trochilidae) assemblage using resources from the exotic African tuliptree, Spathodea campanulata (Bignoniaceae) in a Neotropical altered environment, southeastern Brazil.

Braz J Biol 2020 Feb 21. Epub 2020 Feb 21.

Laboratório de Aves Neotropicais, Departamento de Ecologia e Biologia Evolutiva, Universidade Federal de São Carlos - UFSCar, Rod. Washington Luís, Km 235, CEP 13565-905, São Carlos, SP, Brasil.

The non-native African tuliptree, Spathodea campanulata (P. Beauv), is widely distributed in altered Neotropical environments, where hummingbirds are important pollinators. We investigated the assemblage of hummingbirds which fed on its nectar and described their behavior, to understand possible influences of the exotic tree on the territorial behavior in an altered environment in southeastern Brazil. Read More

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http://dx.doi.org/10.1590/1519-6984.223723DOI Listing
February 2020

Isolates of Bacillus thuringiensis from Maranhão biomes with potential insecticidal action against Aedes aegypti larvae (Diptera, Culicidae).

Braz J Biol 2020 Feb 21. Epub 2020 Feb 21.

Laboratório de Entomologia Médica, Departamento de Química e Biologia, Centro de Estudos Superiores de Caxias - CESC, Universidade Estadual do Maranhão - UEMA, Praça Duque de Caxias, s/n, Morro do Alecrim, CEP 65604-380, Caxias, MA, Brasil.

Entomopathogenic agents are viable and effective options due to their selective action against insects but benign effects on humans and the environment. The most promising entomopathogens include subspecies of Bacillus thuringiensis (Bt), which are widely used for the biological control of insects, including mosquito vectors of human pathogens. The efficacy of B. Read More

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http://dx.doi.org/10.1590/1519-6984.223389DOI Listing
February 2020

Chemical characterization and antimicrobial activity of Campomanesia aurea against three strains of Listeria monocytogenes.

Braz J Biol 2020 Feb 21. Epub 2020 Feb 21.

Centro de Ciências Exatas e Tecnológicas, Universidade do Vale do Taquari - UNIVATES, Av. Avelino Tallini, 171, Bairro Universitário, CEP 95914-014, Lajeado, RS, Brasil.

The essential oil (EO) composition of leaves of Campomanesia aurea was analyzed by GC-MS. The plant was collected in April (EOA) and October (EOO) in São Francisco de Assis/RS. The essential oils were obtained by hydrodistillation in a modified Clevenger apparatus. Read More

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http://dx.doi.org/10.1590/1519-6984.219889DOI Listing
February 2020

Identification of sand flies (Diptera: Psychodidae) and blood meal sources in periurban areas of Ji-Paraná municipality, Western Brazilian Amazon.

Braz J Biol 2020 Feb 17. Epub 2020 Feb 17.

Laboratório de Entomologia, Fundação Oswaldo Cruz - Fiocruz Rondônia, Rua da Beira, 7671, CEP 76812-245, Porto Velho, RO, Brasil.

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http://dx.doi.org/10.1590/1519-6984.228178DOI Listing
February 2020

Considerations about an experimental model of chronic metabolic acidosis in rats.

Braz J Biol 2020 Feb 17. Epub 2020 Feb 17.

Divisão de Cirurgia Torácica e Cardiovascular, Departamento de Cirurgia e Anatomia, Faculdade de Medicina de Ribeirão Preto - FMRP, Universidade de São Paulo - USP, Av. Bandeirantes, 3900, CEP CEP 14048-900, Ribeirão Preto, SP, Brasil.

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http://dx.doi.org/10.1590/1519-6984.227975DOI Listing
February 2020

Antihelminthic action of the Anethum graveolens essential oil on Haemonchus contortus eggs and larvae.

Braz J Biol 2020 Feb 17. Epub 2020 Feb 17.

Laboratório de Parasitologia, Departamento de Microbiologia e Parasitologia, Instituto de Biologia, Universidade Federal de Pelotas - UFPel, Campus Universitário, s/n, Capão do Leão, Prédio 25, Sala 12, CEP 96010-900, Pelotas, RS, Brasil.

Gastrointestinal nematodes are responsible for great economic losses in sheep raising, and their control has long been carried out almost exclusively by the administration of anthelmintics, which have led to serious resistance problems. In the search for alternative control measures, phytotherapic research is highlighted. The aim of this study was to evaluate the action of Anethum graveolens (dill) essential oil on different stages of Haemonchus contortus life cycle, as well its cytotoxicity MDBK (Madin-Darby bovine kidney) cells. Read More

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http://dx.doi.org/10.1590/1519-6984.225856DOI Listing
February 2020

First report of colonization by Panstrongylus megistus (Burmeister, 1835) (Hemiptera, Reduviidae, Triatominae) in the Metropolitan Region of São Paulo, Brazil.

Braz J Biol 2020 Feb 17. Epub 2020 Feb 17.

Laboratório de Imunoepidemiologia, Superintendência de Controle de Endemias, Rua Paula Sousa, 166, 5º andar, Luz, CEP 01027-000, São Paulo, SP, Brasil.

We report the first known occurrence of Panstrongylus megistus (Burmeister, 1835) (Hemiptera, Reduviidae, Triatominae) in the Metropolitan Region of São Paulo, Brazil. In 2018, adult specimens were sent by residents to the competent authorities and, in the inspection of the property, a large focus associated with a marsupial nest was found. This finding reinforces the importance of the species in the state of São Paulo, serves as an alert for epidemiological surveillance and extends the species colonization area in the state of São Paulo. Read More

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http://dx.doi.org/10.1590/1519-6984.225562DOI Listing
February 2020

Hematological parameters of three species of the peacock bass (Cichla spp.) from Balbina lake, Presidente Figueiredo, Amazonas, Brazil.

Braz J Biol 2020 Feb 17. Epub 2020 Feb 17.

Instituto Federal de Educação, Ciência e Tecnologia do Amazonas - IFAM, Campus Manaus Centro - CMC, Av. Sete de Setembro, 1975, CEP 69020-120, Manaus, AM, Brasil.

The objective of this study was to characterize and compare the hematological variables (erythrogram, thrombogram, leukogram and plasma metabolites) of three cichlid species: Cichla monoculus, Cichla temensis and Cichla vazzoleri. A total of 45 specimens were captured in Balbina lake, Presidente Figueiredo, Amazonas, Brazil, with the aid of a rod and reel or hand line, with natural or artificial bait: 15 C. monoculus, 15 C. Read More

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http://dx.doi.org/10.1590/1519-6984.219409DOI Listing
February 2020

Biological behavior of magnesium-substituted hydroxyapatite during bone repair.

Braz J Biol 2020 Feb 17. Epub 2020 Feb 17.

Laboratório de Ciências e Tecnologias da Saúde - LaCTS, Centro de Ciências da Saúde - CCS, Universidade Federal do Recôncavo da Bahia - UFRB, Av. Carlos Amaral, 1015, Cajueiro, CEP 44574-490, Santo Antônio de Jesus, BA, Brasil.

The aim of this study was to analyze the biological behavior and osteogenic potential of magnesium (Mg) substituted hydroxyapatite (HA) microspheres, implanted in a critical bone defect, considering that this ion is of great clinical interest, since it is closely associated with homeostasis and bone mineralization. For the purpose of this study, 30 rats were used to compose three experimental groups: GI - bone defect filled with HA microspheres; GII - bone defect filled with HA microspheres replaced with Mg; GIII - empty bone defect; evaluated at biological points of 15 and 45 days. The histological results, at 15 days, showed, in all the groups, a discrete chronic inflammatory infiltrate; biomaterials intact and surrounded by connective tissue; and bone neoformation restricted to the borders. Read More

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http://dx.doi.org/10.1590/1519-6984.217769DOI Listing
February 2020

Sensitivity of hyperparasitic fungi to alternative products for use in the control of papaya black spot.

Braz J Biol 2020 Feb 17. Epub 2020 Feb 17.

Laboratório de Engenharia Agrícola - LEAG, Centro de Ciências e Tecnologias Agropecuárias - CCTA, Universidade Estadual do Norte Fluminense Darcy Ribeiro - UENF, Av. Alberto Lamego, 2000, Parque Califórnia, CEP 28013-602, Campos dos Goytacazes, RJ, Brasil.

The use of more than one control technique can maximize the reduction of the damages caused by the fungus Asperisporium caricae causal agent of the black spot in the papaya crop. The objective of this work was to evaluate the sensitivity of the fungi Hansfordia pulvinata and Acremonium spp. to alternative products with potential for use in the control of the black-spotted ptarmigan. Read More

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http://dx.doi.org/10.1590/1519-6984.214909DOI Listing
February 2020

Resource use efficiency of cotton in improved vs conventional planting geometry with exogenous application of bio-stimulant and synthetic growth retardant.

Braz J Biol 2020 Feb 17. Epub 2020 Feb 17.

Pir Mehr Ali Shah Arid Agriculture University, Rawalpindi, Pakistan.

Plant growth regulators and improved planting density are the innovative techniques in the establishment of more productive cotton crop. A field study was planned to assess the role of growth regulators in the resource utilization efficiency of cotton cultivars under different row spacing at Agronomic Research Area, Bahauddin Zakariya University Multan and Usmania Agricultural Farm, Shujaabad during Kharif 2012. The study was comprised of cotton cultivars viz. Read More

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http://dx.doi.org/10.1590/1519-6984.213951DOI Listing
February 2020