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71.
Leda Maria C. Pereira Paulo Ricardo O. Bersano Danilo D. Rocha Maria Denise Lopes 《Reproduction in domestic animals》2019,54(2):325-341
This study aimed to investigate the localization of MPF, MAPK, p34cdc2 and cyclin B1 proteins, before and after treatment with EGF during different moments of oocyte maturation. The ovaries obtained from 350 domestic dogs were aseptically isolated, immersed in physiological solution and transported at 4°C. In the laboratory, the ovaries were sectioned for the release of cumulus–oocyte complexes. Cumulus–oocyte complexes were selected and divided into treatment groups with and without EGF and cultured for 24, 48 and 72 hr. Immunofluorescence was used for the detection and the localization of MAPK, MPF, p34cdc2 and cyclin B1 proteins. We observed that the expression and localization of MPF, MAPK, p34cdc2 and cyclin B1 proteins are associated with meiosis resumption and cell cycle progression, and that EGF influences cell signalling pathways by promoting alterations in the localization of these proteins, improving the acquisition of oocyte competence. This is the first report of the localization of crucial proteins for meiosis progression in domestic dogs and identification of the expression and localization of proteins for cell cycle progression performed in this study represented a step of great importance to elucidate the mechanisms involved in the meiosis block in domestic dogs, allowing the advance in this research area. 相似文献
72.
Detection and phylogenetic characterization of astroviruses in insectivorous bats from Central‐Southern Italy
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Maria Grazia Amoroso Danilo Russo Gianvito Lanave Luca Cistrone Annamaria Pratelli Vito Martella Giorgio Galiero Nicola Decaro Giovanna Fusco 《Zoonoses and public health》2018,65(6):702-710
In recent years, bats have been found to harbour many viruses, raising several questions about their role as reservoirs and potential disseminators of zoonotic viruses. We investigated the presence of six virus families in bats in three regions of Central‐Southern Italy. Astroviruses were identified in seven of 13 bat species. Sequence analysis revealed marked genetic heterogeneity among the astroviruses identified, with nucleotide identity ranging between 60.26% and 87.62%. Astrovirus diversity was not associated with the bat species, the geographic areas or the bat colony, suggesting the circulation of several astrovirus strains in Italian ecosystems. Genetic diversification and interspecies transmission appear common in bat astroviruses and could provide, potentially, the bases for transmission to humans and other mammals. Yet overemphasizing this risk might have detrimental consequences for bat conservation and preservation of the important ecosystem services bats provide. 相似文献
73.
Sustainable water treatment in aquaculture – photolysis and photodynamic therapy for the inactivation of Vibrio species
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Danilo Malara Christina Mielke Michael Oelgemöller Mathias O Senge Kirsten Heimann 《Aquaculture Research》2017,48(6):2954-2962
Species of the genus Vibrio have been recognized as one of the most significant pathogens in aquaculture farming, causing mass mortality of farmed stocks. Photodynamic Antimicrobial Chemotherapy (PACT) with singlet oxygen (1O2) has been identified as a powerful and sustainable water treatment method for pathogen eradication. In this study, the efficiencies of photolytic and photodynamic disinfection protocols were studied with two Vibrio species, Vibrio parahaemolyticus and Vibrio owensii. The selected microorganisms were successfully cultivated in marine broth and irradiations were performed with ~108 bacteria mL?1. Treated samples were monitored for bacterial regrowth for up to 7 days. Photolysis experiments were initially conducted with UV‐A, UV‐B for up to 2 h and visible (VIS) light for up to 24 h. Of these, only irradiation with UV‐B light for at least 45 min was efficient in controlling Vibrio. Irradiations with VIS light were subsequently repeated under PACT conditions in dose?response experiments with two water‐soluble porphyrins, [T4(MePy)P] and [TPPS4]. Disinfections of samples were successful for both porphyrin types at minimum concentrations of 10 μM and 24 h of irradiation. 相似文献
74.
Agus S. Kadda Andy M. Venus Danilo B. Lataza Maria Rosa E. Solis 《Small-Scale Forestry》2008,7(3-4):319-331
One way to maximize potential income of smallholder tree farmers is to ensure high quality of planting material. In San Carlos City, Negros Occidental, the Philippines, great importance is placed on seedling quality because Energy Crop Plantations (ECPs) managed under a Short-Rotation Coppice (SRC) system will involve a single planting for several three-year coppices. High seedling quality requires superior seed provenances and seedling propagation methods. Throughout the establishment of the nursery facility, and the propagation of planting stock, data collection, reporting and database systems have been designed to capture relevant costs and technical information. Training has been provided to nursery personnel and labourers to enable them to operate the nursery and produce high quality seedlings. This paper reports a practical operational evaluation of all materials and procedures followed in nursery establishment and seedling production. Economies of scale in nursery operation are achieved at a production level of at least 90,000 seedlings per planting season of three months in the year. The production cost is estimated at PhP 3.57/seedling, excluding the cost of the nursery infrastructure and overheads. Cost comparison with decentralized or contracted nurseries shows little variation at a total cost of PhP 4.12/seedling. However, with these alternative nursery arrangements there is high risk of producing low quality seedlings by possible reduction of inputs and skipping quality enhancement procedures to reduce production cost. 相似文献
75.
Souza Danilo Santos Souza Jane Delane Reis Pimentel Coutinho Janclei Pereira da Silveira Tayse Ferreira Ferreira Ballus Cristiano Augusto Filho José Teixeira Bolini Helena Maria Andre Godoy Helena Teixeira 《Plant foods for human nutrition (Dordrecht, Netherlands)》2020,75(1):70-75
Plant Foods for Human Nutrition - Tamarind fruits are consumed worldwide and their seeds have an underexploited potential. We assessed the effect of the addition of a freeze-dried aqueous of... 相似文献
76.
Aymbiré Angeletti Fonseca Danilo Andrade Santos Renato Ribeiro Passos Felipe Vaz Andrade Otacílio José Passos Rangel 《Soil Use and Management》2020,36(4):714-725
The low efficiency of phosphorus fertilization in weathered soils can limit plant development. The application of biochars in these areas has been seen as an important way to increase the efficiency of phosphorus fertilization and to promote better plant growth. However, biochars are alkaline materials that can increase soil pH and thus change the nutrient dynamics, which has been often ignored in studies of this nature. Here, all treatments had their pH standardized at 6.1 to eliminate the influence of pH on biochar application responses. The main goal of this study was to evaluate the real potential of coffee straw and eucalyptus bark biochars, produced under different pyrolysis temperatures, in the optimization of phosphorus fertilization and the development of Brachiaria brizantha. A greenhouse experiment was set up in a 2 × 2 × 5 factorial scheme, conducted for 120 days. The biochars, prepared from coffee straw and eucalyptus bark at 350 and 600°C, were applied at five rates in a Red-Yellow Oxisol. The application of biochars may reduce the demand for nutrients and correctives, optimize phosphorus fertilization and improve the development of Brachiaria brizantha, but this ability depends on the raw material and the pyrolysis temperature used in its production. All analysed biochars can contribute to higher tillering and dry matter production, but only coffee straw biochars and eucalyptus bark biochar produced at 350°C were efficient in the optimization of phosphorus fertilization until 120 days of cultivation of Brachiaria brizantha. 相似文献
77.
Felix Francival Cardoso Alves de Oliveira Danilo Flademir dos Santos Ferrari Cibele Voigt Eduardo Luiz Pacheco Mauro Vasconcelos 《New Forests》2021,52(2):237-248
New Forests - The quality of forest seeds may be maintained in the course of storage for their use in the restoration of degraded areas and the conservation of genetic resources. In this sense,... 相似文献
78.
Amazonas Nino Tavares Forrester David I. Silva Carina Camargo de Almeida Danilo Roberti Alves Oliveira Rafael Silva Rodrigues Ricardo Ribeiro Brancalion Pedro H. S. 《New Forests》2021,52(5):807-828
New Forests - Mixed plantations composed of Eucalyptus intercropped with a high diversity of native tree species are a promising option for combining biodiversity recovery with wood production... 相似文献
79.
Juan Pablo Damián Angélica Terrazas Elisa Cabrera Sofía Simonetti Rafael Aragunde Danilo Fila 《Reproduction in domestic animals》2020,55(9):1180-1189
Primiparous ewes and multiparous ewes show physiological differences during pregnancy, which can have an impact on the development of their offspring. The objective of this study was to compare the changes in the metabolic profile and in the size of some foetal bones throughout gestation between primiparous and multiparous ewes. Twelve primiparous (PM) ewes and 14 multiparous (MT) ewes were used. According to the dates of lambing, two groups of ewes were formed: Group 1 (G1, n = 6 PM and n = 7 MT) and Group 2 (G2, n = 6 PM and n = 7 MT). The body weight, body condition score, metabolic and foetal morphometric parameters were determined from before conception until the end of gestation. After lambing, the body weight and survival rate during the first 72 hr of life of lambs, as well as the maternal behaviour score were recorded. The PM ewes were lighter (p < .01) and had a greater mobilization of body reserves during gestation, mainly evidenced by a greater serum concentration of NEFAs and lower serum concentration of total proteins (p < .05) compared with the MT ewes. The parity did not affect the foetal morphometric variables. The lambs of MT ewes were heavier at parturition (p = .002) and tended to have a greater survival rate than those lambs of PM ewes (p = .09). In conclusion, PM ewes and MT ewes differ in their metabolic profile throughout the gestation. However, in the present study, we did not find parity differences in the dimensions of foetal bones during growth in gestation. 相似文献
80.
Igor A Silva Danilo M da Silva Gustavo H de Carvalho Marco A Batalha 《Annals of Forest Science》2011,68(7):1207-1215