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Brazilian Journal of Biology, Revista Brasleira de Biologia

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https://www.readbyqxmd.com/read/28699970/reduction-of-doxorubicin-induced-genotoxicity-by-handroanthus-impetiginosus-in-mouse-bone-marrow-revealed-by-micronucleus-assay
#1
M F G Boriollo, T A Silva, M F Rodrigues-Netto, J J Silva, M B Marques, C T S Dias, J F Höfling, M C C Resck, N M S Oliveira
Handroanthus impetiginosus has long been used in traditional medicine and various studies have determined the presence of bioactive chemical compounds and potential phytotherapeutics. In this study, the genotoxicity of the lyophilized tincture of H. impetiginosus bark (THI) was evaluated in mouse bone marrow using micronucleus assays. The interaction between THI and genotoxic effects induced by the chemotherapeutic agent, doxorubicin (DXR), was also analyzed. Experimental groups were evaluated 24 to 48 h after treatment with N-nitroso-N-ethylurea (NEU; 50 mg/kg), DXR (5 mg/kg), sodium chloride (NaCl; 150 mM), and THI (0...
July 10, 2017: Brazilian Journal of Biology, Revista Brasleira de Biologia
https://www.readbyqxmd.com/read/28699969/the-effect-of-size-and-density-on-nut-removal-in-syagrus-loefgrenii-glassman-arecaceae-in-the-brazilian-cerrado
#2
J Ragusa-Netto
In this study I tested the effect of Syagrus loefgrenii nut size and number on the intensity of removal by rodents across seasons. Trials were performed in which piles of either small or large endocarps (1, 3, 6, 12, and 25) were subjected to removal by rodents in the Cerrado (Brazilian savanna). Despite of variations in the intensity of removal, always this process decrease conform endocarp number. Also, mean proportion of endocarp removal was unrelated to year period, initial number, and size of endocarps...
July 10, 2017: Brazilian Journal of Biology, Revista Brasleira de Biologia
https://www.readbyqxmd.com/read/28699968/phytochemistry-antioxidant-potential-and-antifungal-of-byrsonima-crassifolia-on-soil-phytopathogen-control
#3
B S Andrade, R Matias, B O Corrêa, A K M Oliveira, D G F Guidolin, A R Roel
The use of chemical defensives to control fungal diseases has by consequence to impact negatively over the environment and human health, this way, the use of plant extracts with antifungal properties along with proper cultural management makes viable an alternative plant production control, specially for familiar and organic cultures. The objective of this study was to perform phytochemical and antioxidant analysis of Byrsonima crassifolia (canjiqueira) barks and evaluate its antifungal potential over Fusarium solani and Sclerotinia sclerotiorum mycelial growth...
July 10, 2017: Brazilian Journal of Biology, Revista Brasleira de Biologia
https://www.readbyqxmd.com/read/28699967/accumulation-of-copper-by-the-aquatic-macrophyte-salvinia-biloba-raddi-salviniaceae
#4
F Freitas, S Lunardi, L B Souza, J S C von der Osten, R Arruda, R L T Andrade, L D Battirola
Aquatic macrophytes have properties and mechanisms which are useful for the removal of substances in solution, commonly used in phytoremediation processes in aquatic environments. This study evaluated the performance of copper (Cu) accumulation by Salvinia biloba Raddi (Salviniaceae) in different metal concentrations (1, 3 and 5 µg mL-1), as well as the control treatment, measured at intervals of 0, 7 and 14 days under laboratory conditions, with control as to pH and luminosity. After the experiment, the S...
July 10, 2017: Brazilian Journal of Biology, Revista Brasleira de Biologia
https://www.readbyqxmd.com/read/28699966/proteomic-profile-of-piper-tuberculatum-piperaceae
#5
F Cotinguiba, S N López, I G F Budzinski, C A Labate, M J Kato, M Furlan
Piper tuberculatum (Piperaceae) is a species that accumulates especially amides as secondary metabolites and several biological activities was previously reported. In this article, we report a proteomic study of P. tuberculatum. Bidimensional electrophoresis (2D SDS-PAGE) and mass spectrometry (ESI-Q-TOF) were used in this study. Over a hundred spots and various peptides were identified in this species and the putative functions of these peptides related to defense mechanism as biotic and abiotic stress were assigned...
July 10, 2017: Brazilian Journal of Biology, Revista Brasleira de Biologia
https://www.readbyqxmd.com/read/28699965/bacterial-degradation-of-dissolved-organic-matter-released-by-planktothrix-agardhii-cyanobacteria
#6
L P Tessarolli, I L Bagatini, I Bianchini-Jr, A A H Vieira
Although Planktothrix agardhii often produces toxic blooms in eutrophic water bodies around the world, little is known about the fate of the organic matter released by these abundant Cyanobacteria. Thus, this study focused in estimating the bacterial consumption of the DOC and DON (dissolved organic carbon and dissolved organic nitrogen, respectively) produced by axenic P. agardhii cultures and identifying some of the bacterial OTUs (operational taxonomic units) involved in the process. Both P. agardhii and bacterial inocula were sampled from the eutrophic Barra Bonita Reservoir (SP, Brazil)...
July 10, 2017: Brazilian Journal of Biology, Revista Brasleira de Biologia
https://www.readbyqxmd.com/read/28699964/antifungal-susceptibility-profile-of-diferent-yeasts-isolates-from-wild-animals-cow-s-milk-with-subclinical-mastitis-and-hospital-environment
#7
J F Mendes, C L Gonçalves, G F Ferreira, I A Esteves, C H Freitas, J P V Villarreal, J R B Mello, M C A Meireles, P S Nascente
Yeast infections have acquired great importance due to increasing frequency in immunocompromised patients or patients undergoing invasive diagnostic and therapeutic techniques, and also because of its high morbidity and mortality. At the same time, it has been seen an increase in the emergence of new pathogenic species difficult to diagnose and treat. The aim of this study was to determine the in vitro susceptibility of 89 yeasts from different sources against the antifungals amphotericin B, voriconazole, fluconazole and flucytosine, using the VITEK® 2 Compact system...
July 10, 2017: Brazilian Journal of Biology, Revista Brasleira de Biologia
https://www.readbyqxmd.com/read/28699963/nitrogen-and-phosphorus-flux-from-the-production-of-nile-tilapia-through-the-application-of-environmental-indicators
#8
J A S Osti, M A B Moraes, C F Carmo, C T J Mercante
We aimed in this study utilize environmental indicators as a quantitative method to evaluate and discuss the nitrogen (TN) and phosphorus (TP) flux by a production stage grow-out (termination) of Nile tilapia (Oreochromis niloticus) in fishpond. The TN and TP load, the mass balance, the input of TN and TP via feed and the converted nutrients in fish biomass are the environmental indicators applied in this study. During the production cycle (128 days), the system exported 15,931 g TN and 4,189 g TP that were related to the amount of feed supplied (r Pearson = 0...
July 10, 2017: Brazilian Journal of Biology, Revista Brasleira de Biologia
https://www.readbyqxmd.com/read/28678977/distribution-and-density-of-the-bivalve-anomalocardia-brasiliana-in-the-estuarine-region-of-northeastern-brazil
#9
A M L Rodrigues Maia, E Medeiros, G G Henry-Silva
The objective of this study was to analyze the density and distribution of the bivalve Anomalocardia brasiliana in beaches in the estuarine region of the semiarid in Rio Grande do Norte State, Barra and Pernambuquinho (04°56.978'S and 37°08.961'W and 04°56.792'S and 37°09.375'W, respectively). Samples were collected monthly during 37 months using five transects (300 m long and 400 m apart) laid perpendicularly to the beach line toward the sea. Seven collection points, 50 m apart, were set in each transect, and shellfish and sediment samples were collected...
June 26, 2017: Brazilian Journal of Biology, Revista Brasleira de Biologia
https://www.readbyqxmd.com/read/28658392/maize-plants-produce-direct-resistance-elicited-by-tetranychus-urticae-koch-acari-tetranychidae
#10
P D Paulo, C G Lima, A B Dominiquini, M A M Fadini, S M Mendes, C G S Marinho
Plants can be attacked by a wide variety of herbivores. Thus, developing protective mechanisms for resistance against these agents is an advantage for survival and reproduction. Over the course of evolution, many resistance mechanisms against herbivory have been developed by the plants. Induced direct and indirect resistance mechanisms can manifest in plants after herbivore attack. The two-spotted spider mite Tetranychus urticae is not a pest of maize crops (Zea mays), despite being reported infesting plants that may have resistances against this herbivore...
June 26, 2017: Brazilian Journal of Biology, Revista Brasleira de Biologia
https://www.readbyqxmd.com/read/28658391/escherichia-coli-is-not-a-suitable-fecal-indicator-to-assess-water-fecal-contamination-by-otters
#11
M Oliveira, D Freire, N M Pedroso
The detection of pathogenic microorganisms in aquatic environments is extremely relevant in terms of public health. As these laboratorial methodologies are usually difficult, expensive and time-consuming, they are frequently replaced by the assessment of fecal indicator bacteria, such as Escherichia coli. This study aimed to assess the presence of E. coli in fecal samples from Neotropical otters, to evaluate its potential as fecal indicator to be applied to the determination of water microbiological quality in areas where otters' populations are high...
June 26, 2017: Brazilian Journal of Biology, Revista Brasleira de Biologia
https://www.readbyqxmd.com/read/28658390/foliar-phenolic-compounds-of-ten-wild-species-of-verbenacea-as-antioxidants-and-specific-chemomarkers
#12
J A Ávila-Reyes, N Almaraz-Abarca, A I Chaidez-Ayala, D Ramírez-Noya, E A Delgado-Alvarado, R Torres-Ricario, N Naranjo-Jiménez, R E Alanís-Bañuelos
The family Verbenaceae hosts important species used in traditional medicine of many countries. The taxonomic controversies concerning the specific delimitation of several of its species make it difficult to guarantee the botanical origin of herbal preparations based on species of this family. To contribute to the development of both specific chemomarkers and a quality control tool to authenticate the botanical origin of herbal preparations of Verbenacea species, we determined the foliar HPLC-DAD phenolic profiles and the antioxidant properties of 10 wild species of this family occurring in Mexico...
June 26, 2017: Brazilian Journal of Biology, Revista Brasleira de Biologia
https://www.readbyqxmd.com/read/28658389/cry-protein-in-the-predatory-mite-neoseiulus-californicus-and-spider-mite-tetranychus-urticae-prey-fed-with-transgenic-maize
#13
P D Paulo, M A M Fadini, A B Dominiquini, S M Mendes, C G S Marinho
No abstract text is available yet for this article.
June 26, 2017: Brazilian Journal of Biology, Revista Brasleira de Biologia
https://www.readbyqxmd.com/read/28658388/aquatic-macrophyte-mats-as-dispersers-of-one-invasive-plant-species
#14
T S Michelan, M S Dainez, S M Thomaz
No abstract text is available yet for this article.
June 26, 2017: Brazilian Journal of Biology, Revista Brasleira de Biologia
https://www.readbyqxmd.com/read/28658387/first-record-of-crypticerya-zeteki-cockerell-1914-monophlebidae-in-brazil-and-maconellicoccus-hirsutus-green-1908-pseudococcidae-in-the-state-of-maranh%C3%A3-o
#15
A S J C Ramos, A L B G Peronti, T Kondo, R N S Lemos
Crypticerya zeteki (Cockerell, 1914) (Hemiptera: Coccomorpha: Monophlebidae) is recorded for the first time from Brazil and Maconellicoccus hirsutus (Green, 1908) (Hemiptera: Coccomorpha: Pseudococcidae) is recorded for the first time from the state of Maranhão, Brazil. Both species were collected from branches, leaves and fruits of various fruit trees in the municipalities of São José de Ribamar, São Luís and Paço do Lumiar, Maranhão, Brazil. Crypticerya zeteki was collected on Citrus spp. (Rutaceae), Cocos nucifera (L...
June 26, 2017: Brazilian Journal of Biology, Revista Brasleira de Biologia
https://www.readbyqxmd.com/read/28658386/phylogeny-of-the-genus-stephomyia-tavares-1916-diptera-cecidomyiidae
#16
V C Maia, L S Barbosa
Stephomyia Tavares, 1916 comprises seven species, all Neotropical: S. clavata (Tavares, 1920); S. epeugeniae Gagné, 1994; S. espiralis Maia, 1993; S. mina Maia, 1993; S. rotundifoliorum Maia, 1993; S. tetralobae Maia, 1993; and S. eugeniae (Felt, 1913). In the present study, a cladistic analysis based upon adult, pupa, larva and gall morphological characters as well as host plant data is carried out in order to discuss the monophyly of the genus and the relationships among the known species. The Stephomyia monophyly was supported by eight synapomorphies: five homoplastic characters and three non-homoplastic characters...
June 26, 2017: Brazilian Journal of Biology, Revista Brasleira de Biologia
https://www.readbyqxmd.com/read/28614425/polyploidy-as-a-chromosomal-component-of-stochastic-noise-variable-scalar-multiples-of-the-diploid-chromosome-complement-in-the-invertebrate-species-girardia-schubarti-from-brazil
#17
E G F Benya, A M Leal-Zanchet, J Hauser
Chromosome stoichiometry, a form of genetic plasticity, specifically refers to variation in the standard diploid genomic composition of an individual or species. In the present work, freshwater planarians (Girardia schubarti) were analyzed to recognize variations in chromosomal stoichiometry especially of complete ploidal change between specimens, within specimens and between cells within specimens and any relations they might have with selected components of phenotypic plasticity. Homoploid polyploids for the group reached rational scalar multiples (e...
June 12, 2017: Brazilian Journal of Biology, Revista Brasleira de Biologia
https://www.readbyqxmd.com/read/28614424/effects-of-roads-on-the-vertebrates-diversity-of-the-indigenous-territory-paresi-and-its-surrounding
#18
T R Brum, M Santos-Filho, G R Canale, A R A Ignácio
Roadkill impact is still underestimated due to the lack of knowledge of its intensity and effect on animal populations. To assess differences between animal roadkills on roads in distinct landscapes, this study recorded meso- and megavertebrate roadkills along 50 km during a year in two highways in the transitional area of Amazonia/Cerrado in Tangará da Serra, Mato Grosso: MT-358 and MT-235, the latter crossing the Paresi Indigenous Land. We assessed roadkill rates and points with higher rates of roadkills, recording the most impacted species, seasonal effects, biomass loss, activity period of species, and traffic volume...
June 12, 2017: Brazilian Journal of Biology, Revista Brasleira de Biologia
https://www.readbyqxmd.com/read/28614423/parasitism-by-a-digenea-in-lucina-pectinata-mollusca-lucinidae
#19
M M Ribeiro, J B Oliveira, G Boehs
Lucina pectinata is an important economic resource in the Brazilian coast. This study reports parasitism caused by a Digenea in this species. The specimens (n = 470) were collected in December 2012 in a mangrove swamp of the Cachoeira River estuary, Bahia, Brazil. They were measured along the anterior-posterior axis (length), and after macroscopic analysis for parasites and diseases cuts of 5 mm were fixated in Carnoy's solution and processed by routine histology technique wherein sessions of 7 μm were stained with Harris hematoxylin and eosin (H&E)...
June 12, 2017: Brazilian Journal of Biology, Revista Brasleira de Biologia
https://www.readbyqxmd.com/read/28614422/characterization-of-oxidative-stress-biomarkers-in-a-freshwater-anomuran-crab
#20
A C P Borges, J F G Piassão, M O Paula, S Sepp, C F S Bez, L U Hepp, A T Valduga, A A Mielniczki Pereira, R L Cansian
In general, environmental responses at level of populations or communities are preceded by alterations at lower biological levels which can be efficiently detected by the analysis of biomarkers. We analyzed the oxidative biomarkers TBARS and Catalase in Aegla singularis, a freshwater crustacean highly sensitive to environmental changes. The objective was to address if are differences in these biomarkers related to the gender as well if they are influenced by seasonal or water physicochemical variables. The results showed differences in biomarkers profile related to the gender...
June 12, 2017: Brazilian Journal of Biology, Revista Brasleira de Biologia
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