排序方式： 共有53条查询结果，搜索用时 234 毫秒
31.
Maria Concepción Lora-Vilchis Esperanza Ruiz-Velasco-Cruz Teodoro Reynoso-Granados Domenico Voltolina 《Journal of the World Aquaculture Society》2004,35(2):232-236
–Juvenile pen shells Atrina maura were fed for 21 d with equal daily rations, equivalent to 6.5% of their live weight, of monoalgal cultures of Tetraselmis suecica, Isochrysis galbana, Chaetoceros muelleri, Chaetoceros calcitrans , and Thalassiosira pseudonana. Pen shell survival was 100% in all cases. All microalgae diets produced shell growth, and live and ash-free dry weight increases. However, the two Chaetoceros strains gave significantly better results, with shell height increases of 4.7 to 2.9 mm, live weight gains of 0.5 to 0.3 g, and final ash-free dry weights of 0.16 to 0.14 g after 3 wk. These results are not related to the algae gross biochemical composition, suggesting that other factors are involved in their nutritional value for this mollusc species. 相似文献
32.
33.
Daniela Alvarado Esperanza Buitrago María Solé Khenia Frontado 《Aquaculture International》2008,16(1):85-90
An organic culture media based on a composted liquid seaweed extract was developed and tested for growth of Chaetoceros muelleri. The extract was evaluated at two concentrations and then compared with two commercial media: Walne and agricultural fertilizer
(AF). The concentrations of nitrogen and phosphorous differed between the two commercial media and the seaweed extract; however,
growth of Chaetoceros muelleri was similar. The successful culture of Chaetoceros muelleri in composted liquid seaweed extract suggests the feasibility of and potential use for this natural, organic fertilizer in
aquaculture. The seaweed extract is simple to obtain and inexpensive. 相似文献
34.
Romero Joaqu&#;n Santa-B&#;rbara Ana Esperanza Moral Juan Agust&#;-Brisach Carlos Roca Luis F. Trapero Antonio 《European journal of plant pathology / European Foundation for Plant Pathology》2022,163(3):545-556
European Journal of Plant Pathology - Anthracnose, caused by Colletotrichum spp., is the main olive fruit disease. Colletotrichum can severely infect olive fruit with a negative impact on the oil... 相似文献
35.
Benítez V Mollá E Martín-Cabrejas MA Aguilera Y López-Andréu FJ Cools K Terry LA Esteban RM 《Plant foods for human nutrition (Dordrecht, Netherlands)》2011,66(1):48-57
The food industry produces a large amount of onion wastes, making it necessary to search for possible ways for their utilization.
One way could be to use these onion wastes as a natural source of high-value functional ingredients, since onion are rich
in several groups of compounds, which have perceived benefits to human health. The objective of this work is to gain knowledge
of any differences between the different onion wastes obtained from industry and non-commercial bulbs to use them as food
ingredients rich in specific compounds. The results showed that brown skin and top–bottom could be potentially used as functional
ingredient rich in dietary fibre, mainly in insoluble fraction, and in total phenolics and flavonoids, with high antioxidant
activity. Moreover, brown skin showed a high concentration of quercetin aglycone and calcium, and top–bottom showed high concentration
of minerals. Outer scales could be used as source of flavonols, with good antioxidant activity and content of dietary fibre.
However, inner scales could be an interesting source of fructans and alk(en)yl cystein sulphoxides. In addition, discarded
onions (cvs Recas and Figueres) could be used as a good source of dietary fibre, and cv Recas also as a source of phenolics
compounds. 相似文献
36.
Cristina Eimil‐Fraga María J. Fernndez‐Sanjurjo Roque Rodríguez‐Soalleiro Esperanza lvarez‐Rodríguez 《Land Degradation \u0026amp; Development》2016,27(7):1731-1739
The influence of bedrock on aluminium toxicity and aluminium speciation in the soil solution was studied in four Pinus pinaster plots. Growth and biomass parameters in the acidic soils were also evaluated in relation to different Al toxicity indices. The plots were developed over slate, biotitic schist, mica schist and granite. Samples of rhizospheric and non‐rhizospheric soil, 1‐year‐old needles and roots were collected in each study plot. Total Al, reactive Al, acid‐soluble Al, non‐labile and labile Al and Al species (Al3+, Al‐OH, Al‐F and Al‐SO4) were determined in soil solution. Reactive Al dominated over the acid‐soluble Al, and the non‐labile Al predominated over the labile Al in all soils, but particularly over mica schist. In the biotitic schist soil, the Al forms and total Al were lower, whereas concentrations were always higher over mica schist. The Al forms considered most toxic were Al3+ and Al‐OH, and Al concentrations were highest over slate and mica schist. Al toxicity indices in soil, needle and roots showed a risk of toxicity in mica schist, slate and granite. The stand site indices over slate and mica schist were lower, consistent with the high labile Al and Al3+ + Al‐OH in soil solution. Despite the high stand site index over granite, the growth efficiency was low, in accordance with very low ratios of Ca/Al in needles or fine roots. This confirmed the adaptation of maritime pine to granitic substrates. Copyright © 2016 John Wiley & Sons, Ltd. 相似文献
37.
Inés Luaces Ana Doménech Marino García-Montijano Victorio M Collado Celia Sánchez J German Tejerizo Margarita Galka Pilar Fernández Esperanza Gómez-Lucía 《Journal of veterinary diagnostic investigation》2008,20(3):381-385
Feline retroviruses are rarely reported in lynx species. Twenty-one Iberian lynx (Lynx pardinus) blood and tissue samples collected from Do?ana National Park and Los Villares (Sierra Morena) in southern Spain during 1993-2003 were analyzed by polymerase chain reaction to amplify nucleic acids from feline retroviruses. Six samples were positive for Feline leukemia virus (FeLV), but no samples tested positive for Feline immunodeficiency virus. The BLAST analysis indicated that 5 of the 6 sequences were closely related to FeLV strain Rickard subgroup A, whereas 1 sequence was identical to FeLV. To the authors' knowledge, this is the first report of FeLV in the endangered Iberian lynx. 相似文献
38.
Shenstone Esperanza Lippman Zach Van Eck Joyce 《Plant foods for human nutrition (Dordrecht, Netherlands)》2020,75(3):316-325
Plant Foods for Human Nutrition - The Physalis genus of the Solanaceae family is home to many edible food crops including tomatillo, goldenberry, and groundcherry. These Physalis members have... 相似文献
39.
Katsuyuki Katayama Osamu Ito Joseph Jackson Adu-Gyamfi Theertham Pradymna Rao Esperanza V. Dacanay Tadakatsu Yoneyama 《Soil Science and Plant Nutrition》2013,59(1):143-150
A long-term experiment was carried out on a Vertisol from 1986 to 1992 to examine the combined effects of NPK fertilizers on yield using sorghum (Sorghum bicolor L. Moench cv. CSH 5) and short-duration pigeonpea (Cajanus cajan L. Millsp. cv. ICPL 87). The fertilizer treatments were as follows: 0 (no fertilization), N (150 kg N ha-1 ), P (65.5 kg P2O5 ha-1), K (124.5 kg K2O ha-1), and all possible combinations (NP, NK, PK, and NPK). In this study we continued this experiment during the period 1993 to 1994 and analyzed the crop yield response to fertilizers and the N balance. The amount of N derived from the atmosphere and fertilizer was estimated by the 15N natural abundance method and l5N isotope dilution method, respectively. A combined application of Nand P fertilizers gave the highest grain yield for the two crops under the 8th and 9th continuous croppings, unlike the application of K fertilizer. The values of total N for the two crops were significantly higher in the NP and NPK plots. These crops took up N mainly from soil. There was a significant positive relationship between the uptake of Ndff and Ndfs by each crop. Pigeonpea or sorghum took up more N from the soil in the N fertilizer plots than in the plots without N, suggesting that soil N fertility was enhanced and the amount of N supplied from soil increased in the plots with consecutive application of N fertilizer for 7 y. Even pigeonpea, which fixes atmospheric N inherently, needed N fertilizer to achieve high grain yield, suggesting that N fixation by the nodules was not always sufficient to meet the N requirements of the crop under these conditions. Although fertilizer N exerted a beneficial effect on plant growth and yield in the two crops, the values of fertilizer N recovery (FNR) by the two crops were considerably low. Therefore, it is suggested that the development of N fertilizer management which could maximize FNR of each crop should be promoted. 相似文献
40.
Dichogaster saliens is an epigeic earthworm normally found in tropical agro-ecosystems. Due to its ecological feature, it was hypothesized that this earthworm can tolerate substrates enriched with fresh organic matter. The aim of this study was to test the effect of different substrates on the weight and reproduction of Dichogaster saliens in microcosms, with controlled temperatures of 27°C and a humidity of 33%. After 90 days of the experiment, substrates with 1.5% Mucuna pruriens var. utilis had the highest individual fresh weight of 360 ± 127 mg, and the highest growth rate of 3.54 ± 5.03 mg day?1. These substrates had cocoons with most biomasses, and casts with the highest content of organic matter (4.81%), N (0.24%), available P (29.3 mg kg?1) and k (2 cmol kg?1). Substrates with 1.5% cow manure had a lower individual fresh weight of 55 ± 49.4 mg. The control treatment (soil without amendment) presented the lowest individual fresh weight. Although it was concluded that D. saliens responded positively to substrates with fresh organic matter, more experiments must be conducted to test the effect of substrates with higher percentages of organic matter. 相似文献