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281.
Luiz Carlos De Santana Ribeiro Morais Correia De Melo Assunção Laudenor Luiz Carlos Day Gama Amir B. Ferreira Neto 《Growth and change》2023,54(3):674-693
This paper aims at estimating the regional and sectoral impacts of the Covid-19 pandemic in the state of Sergipe, Brazil in 2020. We use an input-output model with partial hypothetical extraction. The main results suggest a significant reduction in economic activity in the state, particularly in the Transport and Industry sectors. On the other hand, the Real estate and Food and Accommodation sectors have a greater capacity for recovery with the introduction of an emergency aid program. The municipalities with the largest absolute impact on gross domestic product are Aracaju, Canindé de São Francisco and Nossa Senhora do Socorro, two of them located in the metropolitan area of Aracaju. 相似文献
282.
Maria Luísa Dâmaso-Rodrigues Pedro Pousão-Ferreira Laura Ribeiro Joana Coutinho Narcisa M. Bandarra Paulo J. Gavaia Luís Narciso Sofia Morais 《Aquaculture International》2010,18(5):741-757
Despite the large progress obtained in recent years, Senegalese sole (Solea senegalensis) production of high quality juveniles is still a bottleneck. This paper examines the effect of larval and post-larval lipid
nutrition on juvenile performance and quality. Four dietary treatments were tested: A—enriched Artemia spp. (EA); B—non-enriched Artemia spp. (NEA); C—EA during the pelagic larval period and NEA after larval settlement; D—50% EA and 50% NEA. Juvenile fatty acid
profile at 60 days after hatching (DAH) clearly reflected the larval and post-larval diet composition. Feeding sole larvae
on NEA (poor in lipids and essential fatty acids-EFA) had a negative effect, reducing growth (total length and dry weight)
after 30 DAH and decreasing digestive enzyme activity at the end of the rearing period (60 DAH). However, relatively good
performance compared to the EFA-richest treatment (A) was obtained when larvae were fed 50% EA and 50% NEA (D) or even EA
only during the pelagic larval period followed by NEA after larval settlement (C). Malpigmentation was not affected by the
dietary regimes and its incidence was very low. However, skeletal deformities were prevalent, particularly in the caudal complex,
independently of diet. The results confirm that Senegalese sole appear to have lower larval EFA requirements than most cultured
marine species and potentially even lower requirements during the post-larval stage. The importance of studying the impact
of early nutrition on later juvenile stages was clearly highlighted in this study. 相似文献
283.
284.
José Manoel Colombari Filho Marcos Deon Vilela de Resende Orlando Peixoto de Morais Adriano Pereira de Castro Élcio Perpétuo Guimarães José Almeida Pereira Marley Marico Utumi Flávio Breseghello 《Euphytica》2013,190(1):117-129
A durum wheat recombinant inbred line population developed from PDW 233 × Bhalegaon 4 cross was analyzed in five environments to understand the genetic network responsible for test weight (TW), thousand kernel weight (TKW), grain yield (YLD), spike length (SL), spikelets per spike (SPS), kernels per spike (KER) and kernel weight per spike (KWS). Genotype, environment and their interactions were main sources of variance for all the traits. TW and TKW were influenced by 11 main effect QTL and 6 digenic epistatic interactions detected on chromosomes 2A, 2B, 4B and 7A. Grain yield was influenced by three epistatic interactions and five main effect QTL, of which two on chromosome 2A were most consistent. A major QTL for spike length was observed on chromosome 3B. QTL for spike characters were distributed over 9 chromosomes. All the traits showed significant influence of digenic epistasis (QQ) and, to a certain extent, QTL × environment interactions (QQE). Therefore, while breeding for complex traits like kernel characters and grain yield components, these interactions should also be considered important. The consistent QTL on chromosome 2A between the marker interval Xgwm71.2–Xubc835.4 with pleiotropic effect on TW and TKW, may be utilized in early generation selection to improve TW and TKW and thereby the milling potential of the durum wheat. 相似文献