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Publications (16)
O Caderno de formação objetiva favorecer a compreensão do PIBID UNILAB a partir das informações acerca da configuração do Programa, dos compromissos políticos e pedagógicos do Projeto Institucional, das marcas identitárias das diferentes áreas do conhecimento às quais se vinculam os subprojetos no Ceará e na Bahia, sem perder de vista os elementos...
Harvestmen are one of the largest groups of arachnids with more than 6,500 species distributed in 1,500 genera and 50 families. However, the interactions between harvestmen and arthropod-pathogenic fungi have rarely been studied. Certain previous studies report that fungal attack represents one of the most important factors for the mortality of har...
We present the first record of Epicadus trituberculatus (Taczanowski, 1872) from the Northeast Region of Brazil. The new record is based on six specimens observed in two areas of montane semi-deciduous tropical forest located in two municipalities: Guaramiranga and Pacatuba, Ceará state, Brazil. Of the six specimens observed we collected manually o...
Some polysphinctine parasitoid wasps can alter the web building behavior of their host spiders. In this paper, we describe and illustrate a new species Eruga unilabiana sp. nov. and report for the first time, to the best of our knowledge, the interaction between this parasitic wasp and the linyphiid spider Dubiaranea sp. We investigated the wasp's...
Wood properties influence the leaf life span ( LL ) of tree crowns. As lignin is an important component of wood and the water transport system, we investigated its relationship with embolism resistance and the LL of several tree species in a seasonally dry tropical ecosystem.
We determined total lignin and the monomer contents of guaiacyl (G) and s...
The entomopathogenic fungus Ophiocordyceps camponoti-atricipis parasitizes the ant species Camponotus (Myrmothrix) atriceps in the Brazilian Central Amazon, and may induce behavioral changes in its hosts. In this study, we extended the distribution range of this interaction for the Atlantic Forest biome. In addition, we investigated the occurrence...
The genus Hymenoepimecis only occurs in the Neotropics. In some species of this genus, the larval stage modifies the behavior of the spider hosts, inducing then to construct a modified web. The wasp Hymenoepimecis veranii has been previously described as an ectoparasitoid of the spider Araneus omnicolor. This study provides detailed information abo...
Sugarcane is currently one of the most efficient crops in the production of first generation biofuels. However, the bagasse represents an additional abundant lignocellulosic resource that has the potential to increase the ethanol production per plant. To achieve a more efficient conversion of bagasse into ethanol, a better understanding of the main...
Background
The genus Eucalyptus consists of approximately 600 species and subspecies and has a physiological plasticity that allows some species to propagate in different regions of the world. Eucalyptus is a major source of cellulose for paper manufacturing, and its cultivation is limited by weather conditions, particularly water stress and low te...
The aim of this study was to determine which anthocyanins are related to the purple coloration of young leaves in Coffea arabica var. Purpurascens and assess their impact on photosynthesis as compared to C. arabica var. Catuaí, with green leaves. Two delphinidin glicosides were identified and histological cross-sections showed they were located thr...
Some parasitoids build a cocoon mass that hangs in the host body until the adults emergence, which is an advantage against attack by predators who troll the vegetation in search of prey. However, such behaviour is not effective against the hyperparasitoid attacks. This study reports the interaction between the caterpillar Manduca sexta Linnaeus, 17...
It is known that many abiotic stresses, such as mineral deficiency, drought, UV-B radiation, wind and low temperatures, alter the quantity and composition of lignin in several species [1]. The aim of this work was to verify if the drought stress may cause changes in the quantity and composition of lignin in Eucalyptus globulus Labill and in the hyb...
It is known that many abiotic stresses, such as mineral deficiency, drought, UV-B radiation, wind and low temperatures , alter the quantity and composition of lignin in several species [1]. The aim of this work was to verify if the cold stress may cause changes in the quantity and composition of lignin in E. globulus. Additionally, we analyzed whet...
Heart of palm (palmito) is the edible part of the apical meristem of palms and is considered a gourmet vegetable. Palmitos from the palms Euterpe edulis (Juçara) and Euterpe oleracea (Açaí) oxidise after harvesting, whereas almost no oxidation is observed in palmitos from Bactris gasipaes (Pupunha). Previous investigations showed that oxidation in...
Lignin is a polymer of phenylpropanoid compounds formed through a complex biosynthesis route, represented by a metabolic grid for which most of the genes involved have been sequenced in several plants, mainly in the model-plants Arabidopsis thaliana and Populus. Plants are exposed to different stresses, which may change lignin content and compositi...
