Patterns of insecticide resistance in Aedes aegypti: meta‐analyses of surveys in Latin America and the Caribbean     

Raul Narciso C Guedes  Kaley Beins  Dennis Navarro Costa  Giovanini E Coelho  Haroldo Srgio da S Bezerra 《Pest management science》2020,76(6):2144-2157

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Detection of rubber tree orchards infested by Meloidogyne exigua using vegetation indexes obtained from satellite images     

Lemes  Ernane M.  Machado  Túlio V.  Gontijo  Luciana N.  de Andrade  Samuel L.  Torres  José L. R.  Santos  Maria A.  Coelho  Lísias 《New Forests》2020,51(5):765-779

New Forests - Hevea brasiliensis natural rubber production is strategic for the world economy. Meloidogyne exigua causes the main root disease in this crop in Brazil. Its early diagnosis allows...  相似文献   

Distribution patterns and population structure of the blue shark (Prionace glauca) in the Atlantic and Indian Oceans          下载免费PDF全文

Rui Coelho  Jaime Mejuto  Andrés Domingo  Kotaro Yokawa  Kwang‐Ming Liu  Enric Cortés  Evgeny V. Romanov  Charlene da Silva  Fábio Hazin  Freddy Arocha  Aldrin Masawbi Mwilima  Pascal Bach  Victoria Ortiz de Zárate  William Roche  Pedro G. Lino  Blanca García‐Cortés  Ana M. Ramos‐Cartelle  Rodrigo Forselledo  Federico Mas  Seiji Ohshimo  Dean Courtney  Philippe S. Sabarros  Bernardo Perez  Ciara Wogerbauer  Wen‐Pei Tsai  Felipe Carvalho  Miguel N. Santos 《Fish and Fisheries》2018,19(1):90-106

The blue shark (Prionace glauca) is the most frequently captured shark in pelagic oceanic fisheries, especially pelagic longlines targeting swordfish and/or tunas. As part of cooperative scientific efforts for fisheries and biological data collection, information from fishery observers, scientific projects and surveys, and from recreational fisheries from several nations in the Atlantic and Indian Oceans was compiled. Data sets included information on location, size and sex, in a total of 478,220 blue shark records collected between 1966 and 2014. Sizes ranged from 36 to 394 cm fork length. Considerable variability was observed in the size distribution by region and season in both oceans. Larger blue sharks tend to occur in equatorial and tropical regions, and smaller specimens in higher latitudes in temperate waters. Differences in sex ratios were also detected spatially and seasonally. Nursery areas in the Atlantic seem to occur in the temperate south‐east off South Africa and Namibia, in the south‐west off southern Brazil and Uruguay, and in the north‐east off the Iberian Peninsula and the Azores. Parturition may occur in the tropical north‐east off West Africa. In the Indian Ocean, nursery areas also seem to occur in temperate waters, especially in the south‐west Indian Ocean off South Africa, and in the south‐east off south‐western Australia. The distributional patterns presented in this study provide a better understanding of how blue sharks segregate by size and sex, spatially and temporally, and improve the scientific advice to help adopt more informed and efficient management and conservation measures for this cosmopolitan species.  相似文献   

Biomaterials and Bioactive Natural Products from Marine Invertebrates: From Basic Research to Innovative Applications     

Giovanna Romano  Mariana Almeida  Ana Varela Coelho  Adele Cutignano  Luis G Gonalves  Espen Hansen  Denis Khnykin  Tali Mass  Andreja Ram&#x;ak  Miguel S. Rocha  Tiago H. Silva  Michela Sugni  Loriano Ballarin  Anne-Marie Genevire 《Marine drugs》2022,20(4)

Aquatic invertebrates are a major source of biomaterials and bioactive natural products that can find applications as pharmaceutics, nutraceutics, cosmetics, antibiotics, antifouling products and biomaterials. Symbiotic microorganisms are often the real producers of many secondary metabolites initially isolated from marine invertebrates; however, a certain number of them are actually synthesized by the macro-organisms. In this review, we analysed the literature of the years 2010–2019 on natural products (bioactive molecules and biomaterials) from the main phyla of marine invertebrates explored so far, including sponges, cnidarians, molluscs, echinoderms and ascidians, and present relevant examples of natural products of interest to public and private stakeholders. We also describe omics tools that have been more relevant in identifying and understanding mechanisms and processes underlying the biosynthesis of secondary metabolites in marine invertebrates. Since there is increasing attention on finding new solutions for a sustainable large-scale supply of bioactive compounds, we propose that a possible improvement in the biodiscovery pipeline might also come from the study and utilization of aquatic invertebrate stem cells.  相似文献   

YIELD AND YIELD COMPONENTS OF UPLAND RICE AS INFLUENCED BY NITROGEN SOURCES     

N. K. Fageria  A. Moreira  A. M. Coelho 《Journal of plant nutrition》2013,36(3):361-370

Ammonium sulfate and urea are main sources of nitrogen (N) for annual crop production in developing countries. Two greenhouse experiments were conducted using ammonium sulfate and urea as N sources for upland rice grown on a Brazilian Oxisol. The N rates used were 0, 50, 100, 150, 3000, and 400 kg N kg^?1 of soil. Yield and yield components were significantly increased in a quadratic fashion with increasing N rate. Ammonium sulfate X urea interaction was significant for grain yield, shoot dry matter yield, panicle number, plant height and root dry weight, indicating a different response magnitude of these plant parameters to two sources of N. Based on regression equation, maximum grain yield was achieved with the application of 380 mg N kg^?1 by ammonium sulfate and 271 mg N kg^?1 by urea. Grain yield and yield components were reduced at higher rates of urea (>300 mg kg N) but these plant parameters’ responses to ammonium sulfate at higher rates was constant. In the intermediate N rate range (125 to 275 mg kg^?1), urea was slightly better compared to ammonium sulfate for grain yield. Grain yield was significantly related with plant height, shoot dry weight, panicle number, grain harvest index and root dry weight. Hence, improving these plant characteristics by using appropriate soil and plant management practices can improve upland rice yield.  相似文献   

Chemical composition and nutritional potential of yam bean seeds (Pachyrhizus erosus L. Urban)     

A. C. O. Santos  M. S. M. Cavalcanti  L. C. B. B. Coelho 《Plant foods for human nutrition (Dordrecht, Netherlands)》1996,49(1):35-41

Pachyrhizus erosus seeds were analysed for proximate composition, minerals, protein fractions, antinutritional factors, and rotenoids. The seeds showed a high content of proteins, lipids, Fe and Ca, in comparison to other legumes. Glutelins constitute the highest protein fraction, followed by globulins. Antinutritional substances detected as tannins, hemagglutinating activity and trypsin inhibitory activity, were in low concentrations. Seeds were also processed to obtain a flour which showed proper characteristics, good in vitro digestibility, significant rotenoid reduction level and amino acid composition rich in essential amino acids, except methionine.  相似文献   

Important pest species of the Spodoptera complex: Biology,thermal requirements and ecological zoning     

Parra  Jos&#; Roberto Postali  Coelho  Aloisio  Cuervo-Rugno  Johanna Bajonero  Garcia  Adriano Gomes  de Andrade Moral  Rafael  Specht  Alexandre  Neto  Durval Dourado 《Journal of pest science》2022,95(1):169-186

Journal of Pest Science - In South America, especially in Brazil, four members of the Spodoptera complex, Spodoptera albula (Walker, 1857), S. cosmioides (Walker, 1858), S. eridania (Stoll, 1782),...  相似文献   

Synergistic effect of high and low molecular weight molecules in the foamability and foam stability of sparkling wines     

Coelho E  Reis A  Domingues MR  Rocha SM  Coimbra MA 《Journal of agricultural and food chemistry》2011,59(7):3168-3179

The foam of sparkling wines is a key parameter of their quality. However, the compounds that are directly involved in foam formation and stabilization are not yet completely established. In this work, seven sparkling wines were produced in Bairrada appellation (Portugal) under different conditions and their foaming properties evaluated using a Mosalux-based device. Fractionation of the sparkling wines into four independent fractions, (1) high molecular weight material, with molecular weight higher than 12 kDa (HMW), (2) hydrophilic material with molecular weigh between 1 and 12 kDa (AqIMW), (3) hydrophobic material with molecular weigh between 1 and 12 kDa (MeIMW), and (4) hydrophobic material with a molecular weight lower than 1 kDa (MeLMW), allowed the observation that the wines presenting the lower foam stability were those that presented lower amounts of the MeLMW fraction. The fraction that presented the best foam stability was HMW. When HMW is combined with MeLMW fraction, the foam stability largely increased. This increase was even larger, approaching the foam stability of the sparkling wine, when HMW was combined with the less hydrophobic subfraction of MeLMW (fraction 3). Electrospray tandem mass spectrometry (ESI-MS/MS) of fraction 3 allowed the assignment of polyethylene glycol oligomers (n = 5-11) and diethylene glycol 8-hydroxytridecanoate glyceryl acetate. To observe if these molecules occur in sparkling wine foam, the MeLMW was recovered directly from the sparkling wine foam and was also analyzed by ESI-MS/MS. The presence of monoacylglycerols of palmitic and stearic acids, as well as four glycerylethylene glycol fatty acid derivatives, was observed. These surface active compounds are preferentially partitioned by the sparkling wine foam rather than the liquid phase, allowing the inference of their role as key components in the promotion and stabilization of sparkling wine foam.  相似文献   

Expression of resistance to downy mildew at cotyledon and adult plant stages in Brassica oleracea L.     

Paula S. Coelho  António A. Monteiro 《Euphytica》2003,133(3):279-284

This research compared the expression of resistance to downy mildew at cotyledon and adult plant stages in seven Brassica oleracea genotypes against two P. parasitica isolates of different virulence. Seven day old seedlings were dual inoculated under controlled environment by depositing two 10 μl droplets of a spore suspension of a different isolate on each cotyledon and the interaction phenotype (IP) evaluated 7 days later using a 0–5 scale of increasing susceptibility. The seedlings were transplanted to 16 cm pots and grown in the greenhouse for 110 days (15 to 28 leaves). Adult plants were tested using a single leaf inoculation method that allowed the same plant to be simultaneously inoculated with the two P. parasitica isolates. Leaves were scored 10 days after inoculation using a 0–5 scale of increasing susceptibility. The inoculation of the same plant with the two isolates produced different combinations of cotyledon (CT) and adult-plant (AP) interaction-phenotype according to the genotype. CrGC 3.1 was susceptible at CT and AP stages, ‘Algarvia’ resistant at CT and AP stages, and broccoli ‘A’ susceptible at CT and resistant at AP stage against the two isolates. ‘Murciana’ and broccoli ‘B’ were differential at CT and AP stages. Savoy and Shetland cabbages were differential at CT stage and resistant to both isolates as adult plants. Cotyledon resistance could not be used to predict adult-plant resistance since the two types of resistance were very poorly correlated. Resistance can be race specific either at cotyledon or at adult-plant stage. This revised version was published online in July 2006 with corrections to the Cover Date.  相似文献   

Inheritance of downy mildew resistance at cotyledon and adult-plant stages in ‘Couve Algarvia’ (Brassica oleracea var. tronchuda)     

António A. Monteiro  Paula S. Coelho  Kiril Bahcevandziev  Luísa Valério 《Euphytica》2005,143(1-2):85-92

Parasitic nematodes damage white clover (Trifolium repens) roots, negatively impacting forage yield and persistence. No single gene resistance to nematodes has been identified in white clover. Trifolium semipilosum (2n = 2x = 16) genotypes exhibiting either complete resistance or susceptibility to infection by the clover root-knot nematode (CRKN), Meloidogyne trifoliophila, were identified. F₁ progeny (n = 92) of a pair-cross between ‘TsR’, a plant heterozygous for the resistance phenotype and ‘TsS’, a plant homozygous for the susceptible phenotype, were challenged with infective CRKN juveniles and evaluated subsequently for root galling. Segregation analysis indicated the resistance phenotype may be conferred by a single dominant allele at a locus (designated TRKR, Trifolium Root-knot Resistance) subject to segregation distortion. TsR, TsS, and bulked resistant and bulked susceptible F₁ progeny (n = 12/bulk) were screened using T. repens microsatellite (SSR) markers. Three SSRs revealed polymorphism in TsR and the resistant bulk, of which prs090 and prs247 map to loci on T. repens linkage group D2. Progeny were genotyped with these three SSRs and 23 additional SSRs from T. repens groups D1 and D2. Linkage analysis in both TsR and TsS demonstrated macro-synteny between T. repens group D homoeologues and the T. semipilosum linkage group (designated D_Ts) containing the TRKR locus. Significant segregation distortion was detected in TsR, and recombination in the central region of the T. semipilosum linkage group was suppressed relative to T. repens in both parents. These data demonstrate the opportunities and challenges for comparative mapping in Trifolium and characterisation of loci conferring resistance to plant-parasitic nematodes.  相似文献