The combined effects of microbial insecticides and sodium chloride on the development and emergence of Chironomus xanthus     

Aline Silvestre Pereira Dornelas  João L.T. Pestana  Althiéris de Souza Saraiva  Rone Silva Barbosa  Grasiele Soares Cavallini  Carlos Gravato  Amadeu Mortágua Velho da Maia Soares  Renato Almeida Sarmento 《Pest management science》2023,79(6):2255-2263

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Systolic cardiac function assessment by feature tracking echocardiography in dogs with myxomatous mitral valve disease          下载免费PDF全文

M. M. Mantovani  R. A. L. Muzzi  G. G. Pereira  R. J. Yamato  A. C. Silva  G. F. Reis  L. A. L. Muzzi  E. C. Guimarães 《The Journal of small animal practice》2015,56(6):383-392

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Two Methods of Vitrification Followed by In Vitro Culture of the Ovine Ovary: Evaluation of the Follicular Development and Ovarian Extracellular Matrix          下载免费PDF全文

FT Bandeira  AA Carvalho  SV Castro  LF Lima  DA Viana  JSAM Evangelista  MJS Pereira  CC Campello  JR Figueiredo  APR Rodrigues 《Reproduction in domestic animals》2015,50(2):177-185

The aim of this study was to evaluate the influence of two vitrification techniques on the extra cellular matrix (ECM) and ovarian follicular development. The ovarian cortex was fragmented (9 mm³) and divided into six groups, viz. fresh control, cultured control, vitrified by the Ovarian Tissue Cryosystem (OTC) method, conventional solid surface vitrification (SSV) method, OTC/cultured and SSV/cultured. Follicles from all the fragments were analysed for morphology, development and viability. The ECM was evaluated based on the condition of collagen and reticular fibres and the immunolocalization of type I collagen and fibronectin. After 7 days of culture, the tissue vitrified by OTC revealed a higher percentage (p < 0.05) of morphologically normal (30.66%) and viable (60.00%) follicles when compared with those vitrified using the SSV technique (21.33% and 23.00%). In all the fragments cultured, regardless of the vitrification method, a significantly higher percentage of developing follicles was observed when compared with the non‐cultured tissue. Analysis of the type I collagen showed increased immunostaining after the in vitro culture in the vitrified fragments. In conclusion, the OTC is better for preserving the follicular viability and morphology and maintaining the integrity of the extracellular matrix components of the ovine ovary.  相似文献   

Productivity,nutrient immobilization and soil chemical properties in anEucalyptus globulus plantation under different irrigation and fertilization regimes     

M. Madeira  J. S. Pereira 《Water, air, and soil pollution》1990,54(4):621-634

To evaluate the influence of irrigation and fertilization on the productivity ofE. globulus a field experiment was started in 1986 in Central Portugal. The nutrients accumulated in the biomass and their allocation to the various biomass components as well as the changes in soil chemical characteristics were also followed. Irrigation and fertilization resulted in a significant increase of biomass production during the first 2 yr. A similar trend occurred with the net primary production and leaf Litterfall. The differences between treatments in the amounts of accumulated nutrients in the aboveground biomass were similar to those of biomass accumulation. However, there was a small but consistent effect related to the average concentration of nutrients in the plant tissues. This effect occurred essentially in the leaves and branches. The concentration of N and P in the leaf Litterfall was higher in the fertilized treatments than in the others. Fertilization alone induced a slight increase in the soil pH values, C content, exchangeable Ca and available P levels. Such increase was more pronounced in the fertilized with dripping irrigation treatment. This was due to the accumulation of nutrients in the wetted soil volume.  相似文献   

Gas exchanges and chlorophyll fluorescence of young coffee plants submitted to water and nitrogen stresses     

Bruna Pereira de Souza  Felipe Paolinelli de Carvalho  Marcelo Ehlers Loureiro  Walas Permanhane Sturião 《Journal of plant nutrition》2020,43(16):2455-2465

Abstract

This research aims to evaluate the impact of nitrogen deprivation and water stress on gas exchange and chlorophyll fluorescence in young plants of five cultivars of Arabic coffee. A factorial experiment 5 (cultivars) × 3 (treatments: control without stress, water stress of ?1.5?MPa and stress of N – 0.0?mmol L^?1 N) was carried out in a complete randomized block design with three replicates. Before being submitted to the treatments, the plants were grown in a greenhouse for 240?days, and then transferred to a growth chamber under controlled conditions. Subsequently, after the experimental period of 96?h we measured photosynthetic rate (A), stomatal conductance to water vapor (g_s), transpiratory rate (E), internal and external carbon ratio (Ci/Ca), water use efficiency (A/E), electron transport rate (ETR), actual quantum yield of PS II electron transport (φFSII), and maximum photochemical efficiency of PS II (Fv/Fm). Water stress reduced A, g_s, E, A/E, ETR, φFSII, and Fv/Fm. The nitrogen deficiency reduced ETR, φFSII, and Fv/Fm. Under short-term water stress Catuaí Vermelho maintain the A values due to better stomatal control, reduced water lost by transpiration (E) and better water use efficiency A/E, while Mundo Novo and Acauã show lower damage to Fv/Fm. Short-term nitrogen stress has low impact on A of young plants of Coffea arabica cultivars with adequate N-nutrition.  相似文献   

Do metal contamination and plant species affect microbial abundance and bacterial diversity in the rhizosphere of metallophytes growing in mining areas in a semiarid climate?     

Benidire  Leila  Pereira  Sofia I. A.  Naylo  Ahmed  Castro  Paula M. L.  Boularbah  Ali 《Journal of Soils and Sediments》2020,20(2):1003-1017

Journal of Soils and Sediments - Mining areas are low-quality habitats for macro- and microorganisms’ development, mainly due to the degradation of the soil quality by metal pollution. The...  相似文献   

Biogenic Amines and the Antioxidant Capacity of Juice and Wine from Brazilian Hybrid Grapevines     

Gomez  Hector Alonzo Gomez  Marques  Marcia Ortiz Mayo  Borges  Cristine Vanz  Minatel  Igor Otavio  Monteiro  Gean Charles  Ritschel  Patricia Silva  Zanus  Mauro Celso  Diamante  Marla Silvia  Kluge  Ricardo Alfredo  Lima  Giuseppina Pace Pereira 《Plant foods for human nutrition (Dordrecht, Netherlands)》2020,75(2):258-264

Plant Foods for Human Nutrition - Some biogenic amines (BAs) are used as quality markers in grape-derived products. The prolife of 9 BAs was determined in juices and wines elaborated from hybrid...  相似文献   

Implications of the population effect in the selection of soybean progeny          下载免费PDF全文

Francielly de Cássia Pereira  Adriano Teodoro Bruzi  José Wilacildo de Matos  Breno Alvarenga Rezende  Luis Claudio Prado  José Airton Rodrigues Nunes 《Plant Breeding》2017,136(5):679-687

The goal of this study was to verify the influence of the population effect in the estimates of genetic and phenotypic components and to identify the best soybean progeny or lines in a commercial soybean breeding programme. We evaluated 292 populations for grain yield and absolute maturity during three agricultural years. To quantify the efficiency of the inclusion of the population's effect in the model, we estimated genetic gain with the selection, the Spearman's correlation, the coincidence index, the realized gain and correlated response of selected genotypes with and without the effect of the population. It was found that the variance components, heritability and coefficient of experimental variation were better estimated when the effect of the population was included, providing greater gain with selection for grain yield and absolute maturity. Coincidence and ranking among the selected progeny with and without the effect of the population are of greater magnitude in more advanced inbreeding generations and at higher percentage of selected progeny. The use of the population effect has greater importance in earlier generations of inbreeding.  相似文献   

Bat richness and activity in heterogeneous landscapes: guild-specific and scale-dependent?     

Eduardo S. Mendes  Carlos Fonseca  Sara F. Marques  Daniela Maia  Maria João Ramos Pereira 《Landscape Ecology》2017,32(2):295-311

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Transport of juvenile dusky grouper Epinephelus marginatus under different packing densities: Metabolic and haematological responses          下载免费PDF全文

Paola Milena Pereira‐Cardona  Viviana Lisboa  Luis André Luz Barbas  Ricardo Berteaux Robaldo 《Aquaculture Research》2017,48(10):5356-5362

The aim of this study was to investigate a suitable packing density for the transport of juvenile dusky grouper, Epinephelus marginatus, based on the evaluation of stress responses in blood. After acclimation, fish were placed in plastic bags and transported for 8 hr on paved road at densities of 28, 45 and 64 g/L. Water quality was monitored before and after transport. Blood was collected before, upon arrival (0 hr), after 2 and 24 hr of transport. Plasma cortisol, blood glucose, partial pressures of O₂ (pO₂) and CO₂ (pCO₂), blood pH and HCO₃^? were evaluated. Blood smears were prepared for the verification of leucocyte profile and neutrophils:lymphocyte ratio (N:L). Blood pCO₂, pH and HCO₃^? increased significantly after transport for all treatments compared with pre‐transport. Glucose levels increased at the higher density whereas no effects were observed on plasma cortisol and pO₂ levels. Upon arrival, all treatments showed lymphopenia and neutrophilia which increased N:L ratio. Although lymphopenia was observed in higher densities until 2 hr after transport, haematological parameters were fully restored within 24 hr post transport. Furthermore, no mortalities were observed throughout the experimental period. Based on the transient physiological changes observed in this study, juvenile dusky grouper can be safely transported in plastic bags for 8 hr at a density of up to 64 g/L.  相似文献