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Genetic structure of the ornamental tetra fish species Piabucus melanostomus Holmberg, 1891 (CHARACIDAE, IGUANODECTINAE) in the Brazilian Pantanal wetlands inferred by mitochondrial DNA sequences
(Biota Neotropica, 2013-03-01) [Artigo]
A subfamília Iguanodectinae compreende um grupo de pequenos peixes neotropicais composta de dois gêneros e 11 espécies nominais amplamente distribuídas nas drenagens do Atlântico da América do Sul. Piabucus é o único gênero ...
Rapid configuration analysis of the solenopsins
(Tetrahedron-asymmetry, 2012-05-15) [Artigo]
A protocol for rapid access to the relative and absolute configurations of the solenopsins, the venom alkaloids of fire ants (Solenopsis spp.), was developed based on chiral capillary gas chromatography. The synthesis of ...
The size of excavators within a polymorphic termite species governs tunnel topology
(Animal Behaviour, 2011-12-01) [Artigo]
Caste polymorphism in termites may provide specialization for different tasks in a colony, generating a division of labour that promotes fitness. The influence of polymorphism has been widely studied for many termite ...
Comparative Analysis of Azo Dye Biodegradation by Aspergillus oryzae and Phanerochaete chrysosporium
(Water Air And Soil Pollution, 2014-07-01) [Artigo]
The textile industry often releases effluents into the environment without proper treatment or complete dye removal. Azo dyes, which are characterized by azo groups (-N=N-), are frequently used in the textile industry. ...
Morphological changes in the cephalic salivary glands of females and males of Apis mellifera and Scaptotrigona postica (Hymenoptera, Apidae)
(Journal of Biosciences, 2010-06-01) [Artigo]
The cephalic salivary glands of some species of bees are exclusive and well developed only in Apinae. These glands were studied with light and scanning electron microscopy in workers, queens and males from the honey bee ...
Health related quality of life is differently associated with leisure-time physical activity intensities according to gender: a cross-sectional approach
(Health And Quality Of Life Outcomes, 2014-08-18) [Artigo]
Background: Several studies have demonstrated a positive association between physical activity (PA) and health-related quality of life (HRQL). However, studies have suggested that this association depends both on the PA ...
Asymmetric chromosome segregation in Xanthomonas citri ssp. citri
(Microbiologyopen, 2014-02-01) [Artigo]
This study was intended to characterize the chromosome segregation process of Xanthomonas citri ssp. citri (Xac) by investigating the functionality of the ParB factor encoded on its chromosome, and its requirement for cell ...
Guanidine Affects Differentially the Twitch Response of Diaphragm, Extensor Digitorum Longus and Soleus Nerve-Muscle Preparations of Mice
(Molecules, 2012-06-01) [Artigo]
Guanidine has been used with some success to treat myasthenia gravis and myasthenic syndrome because it increases acetylcholine release at nerve terminals through K+, Na+ and Ca2+ channels-involving mechanisms. Currently, ...
Effect of C/N Ratio and Physicochemical Conditions on the production of Rhamnolipids by Pseudomonas Aeruginosa LBI
(Research Journal of Biotechnology, 2010-08-01) [Artigo]
Waste utilization for biosurfactant production is an important approach contributing to the reduction of waste treatment costs, while increasing the economic value of residues and reducing biosurfactant production costs: ...
Germination of Styrax camporum Pohl. seeds in response to substrate types, moisture contents and the seed morphology
(Anais da Academia Brasileira de Ciências, 2013-03-01) [Artigo]
Este estudo avaliou a contribuição da morfologia da semente de Styrax camporum (tamanho de sementes, presença ou ausência do endocarpo aderido à semente), diferentes substratos (papel filtro, vermiculita, areia e solo: ...