scholarly journals First report of Tanaostigmodessp. as the main pest of Caesalpinia spinosa: Morphological and biological aspects

2021 ◽  
Vol 12 (2) ◽  
pp. 257-263
Author(s):  
Hipolito Murga-Orrillo ◽  
Lenin Palomino-Rosillo ◽  
Sharmely Hilares-Vargas ◽  
Moises Aliaga-Pereyra ◽  
Alejandro Seminario-Cunya ◽  
...  
Keyword(s):  
Integrated Management ◽  
Economic Importance ◽  
Biological Characteristics ◽  
Forest Species ◽  
First Report ◽  
Development Cycle ◽  
Biological Aspects ◽  
And Control

The tara (Caesalpinia spinosa(Mol.) Kuntze) is a non-timber forest species whose pods are of economic importance to various industries; however, attacks by pests such as Tanaostigmodessp. the leaves and young stems decrease the production of this species. The aim of this study was to determine the morphological and biological characteristics of Tanaostigmodessp. and percentage of incidence in C. spinosa. 1399 insects were identified in which evaluations of the duration of the stages, the morphometry and the damage to the plant were carried out. The egg, larva, pupa and adult measure 0.2, 2.0, 2.1 and 2.0 to 2.3 mm long, last 13.1, 71.8, 20.6 and 10.1 days respectively,totaling its development cycle in 115.1 days; the larvae when feeding make mines in the rachis of the leaves and in young stems, reaching maximum attacks of up to 84.5% causing defoliation. Tanaostigmodessp. it is a major tare pest, with average attack records of 24.6% on leaves. Knowing its biological aspects and its interaction with tara phenology will allow the adoption of efficient strategies for its integrated management and control.

scholarly journals Mating Disruption of Pseudococcus calceolariae (Maskell) (Hemiptera, Pseudococcidae) in Fruit Crops

Insects ◽  
2021 ◽  
Vol 12 (4) ◽  
pp. 343
Author(s):  
Carolina Ballesteros ◽  
Alda Romero ◽  
María Colomba Castro ◽  
Sofía Miranda ◽  
Jan Bergmann ◽  
...  
Keyword(s):  
Visual Inspection ◽  
Mating Disruption ◽  
Economic Importance ◽  
Fruit Crops ◽  
Potential Control ◽  
The Third ◽  
Pseudococcus Calceolariae ◽  
And Control ◽  
Potential Use ◽  
Control Tool

Pseudococcus calceolariae, the citrophilous mealybug, is a species of economic importance. Mating disruption (MD) is a potential control tool. During 2017–2020, trials were conducted to evaluate the potential of P. calceolariae MD in an apple and a tangerine orchard. Two pheromone doses, 6.32 g/ha (2017–2018) and 9.45 g/ha (2019–2020), were tested. The intermediate season (2018–2019) was evaluated without pheromone renewal to study the persistence of the pheromone effect. Male captures in pheromone traps, mealybug population/plant, percentage of infested fruit at harvest and mating disruption index (MDI) were recorded regularly. In both orchards, in the first season, male captures were significantly lower in MD plots compared to control plots, with an MDI > 94% in the first month after pheromone deployment. During the second season, significantly lower male captures in MD plots were still observed, with an average MDI of 80%. At the third season, male captures were again significant lower in MD than control plots shortly after pheromone applications. In both orchards, population by visual inspection and infested fruits were very low, without differences between MD and control plots. These results show the potential use of mating disruption for the control of P. calceolariae.

scholarly journals Integrated management is effective in the prevention and control of COVID-19 in the blood purification center: joint efforts from multiple departments

2021 ◽  
Vol 7 (1) ◽  
Author(s):  
Jinmei Yin ◽  
Jun Yin ◽  
Zhiwu Tian ◽  
Peiqiu Li ◽  
Xiaoqiu Chen
Keyword(s):  
Medical Staff ◽  
Prevention And Control ◽  
Integrated Management ◽  
Medical Personnel ◽  
Blood Purification ◽  
Medical Department ◽  
Effective Prevention ◽  
Dialysis Center ◽  
Education Of Patients ◽  
And Control

Abstract Background During the outbreak of new coronavirus pneumonia, many hospitals in China became the designated hospitals for the treatment of new coronavirus pneumonia. The goal was to develop rapid and effective prevention and control methods for blood purification centers. Research design and methods The medical department, hospital department, nursing department, and blood purification center jointly set up a multi-department integrated COVID-19 prevention and control management team to manage the blood purification center. The efforts included the establishment of the continuous renal replacement therapy (CRRT) team for COVID-19, the integrated training and assessment of medical personnel, the integrated education of patients and their families, and the integrated management of the workflow of the hemodialysis room. Results No infected persons, including medical staff, patients, and their families, have been found in the dialysis center. After multi-departmental integrated training, the theoretical performance of medical staff in our dialysis center has increased from 82.36 ± 8.10 to 95.29 ± 4.95 (p < 0.05), and the unqualified rate dropped from 23.21 to 1.78% (p < 0.05). In addition, the three operational skills evaluation scores have also been significantly improved, from 86.00 ± 4.02, 88.01 ± 6.20, 92.01 ± 2.46 to 95.90 ± 0.30, 97.21 ± 0.87, 96.00 ± 1.00 (p < 0.01), and the passing rate from 80.36 to 100% (p < 0.05). Conclusion Medical staff’s knowledge of novel coronavirus pneumonia prevention and control can be improved by multi-sectoral integrated management, and CRRT treatment of COVID-19 patients is effective.

Distribution and density of lobsters in the Brazilian oceanic ecosystem Rocas Atoll

Crustaceana ◽  
2019 ◽  
Vol 92 (3) ◽  
pp. 335-351 ◽  
Author(s):  
Juliana Gaeta ◽  
Raúl Cruz
Keyword(s):  
Economic Importance ◽  
Panulirus Argus ◽  
Top Predator ◽  
Visual Census ◽  
Benthic Ecosystems ◽  
Oceanic Ecosystem ◽  
And Control ◽  
Trophic Webs ◽  
Future Information

Abstract Lobsters are recognizable faunal elements that play an important role as top predator in the trophic webs in benthic ecosystems and have an economic importance due to the intensive and valuable fishery. In Rocas Atoll (03°51′S 33°48′W) the presence of five species of lobsters in low tide pools was observed by visual census. These were: Enoplometopus antillensis Lütken, 1865; Palinurellus gundlachi Von Martens, 1878; Panulirus argus (Latreille, 1804); Panulirus echinatus Smith, 1869; and Parribacus antarcticus (Lund, 1793). This atoll appears to be dominated by P. echinatus followed by P. argus, P. antarcticus, P. gundlachi and E. antillensis, respectively. We also observed the presence of some potential predators that perhaps feed on lobster species and control these populations in the atoll. This work and future information could help to better understand the variability of lobster diversity and density in this unique atoll.

Are Firms with Negative Book Equity in Financial Distress?

2015 ◽  
Vol 18 (03) ◽  
pp. 1550016 ◽  
Author(s):  
Tze Chuan Chewie ANG
Keyword(s):  
Failure Rate ◽  
Financial Distress ◽  
Operating Performance ◽  
Large Magnitude ◽  
Small Magnitude ◽  
First Report ◽  
Distress Risk ◽  
Financial Characteristics ◽  
And Control ◽  
Negative Earnings

This study examines whether negative book equity (BE) firms are in financial distress by analyzing their operating performance, financial characteristics, distress risk, and survivability when they first report negative BE. Firms with small magnitude of negative BE (SNBE firms) suffer from persistent negative earnings and financial distress, while firms with large magnitude of negative BE (LNBE firms) experience a temporary non-distress related earnings shock. LNBE firms report consecutive years of negative BE, but have lower distress risk and failure rate than both SNBE and control firms. However, all negative BE stocks have abysmal returns subsequent to their first report of negative BE.

Study on Water Environmental Integrated Management Modeling Platform in Zhangweinan Basin, China

2013 ◽  
Vol 726-731 ◽  
pp. 3506-3512 ◽  
Author(s):  
Shu Yuan Li ◽  
Jian Hua Tao ◽  
Lei Yu
Keyword(s):  
Bohai Sea ◽  
Integrated Management ◽  
Water Environment ◽  
Pollutant Load ◽  
The Bohai Sea ◽  
Management Platform ◽  
Platform Architecture ◽  
And Control ◽  
Warning Model ◽  
Resource Shortage

Zhangweinan basin is a typical area where has the most serious water resource shortage and water environmental deterioration problems in north of China. To improve the increasingly deteriorated water eco-environment, studies on the integrated management of water resources and water environment in the basin were carried out with focus on the prevention and control of water pollution, and based on which, an integrated management platform on water environment was developed. This paper introduces the platform architecture and elaborates the construction process of the total pollutant load control model and pollution incident early warning model. This platform provides technical supports for weakening the total pollutant load in the basin, reducing the pollutant load flowing into the Bohai Sea, and increasing the eco-flow of river channel and flow into the Bohai Sea.

Biodiversity of the Simuliidae family

2022 ◽  
Vol 4 (1) ◽  
pp. 001-012
Author(s):  
Carlos Henrique Marchiori
Keyword(s):  
World Wide ◽  
Economic Importance ◽  
Academic Science ◽  
Scientific Journals ◽  
Black Flies ◽  
Study Objective ◽  
The Family ◽  
English Speaking ◽  
Biological Aspects ◽  
Taxonomic Groups

Simuliidae belong to the order Diptera, suborder Nematocera, Infraorder Culicomorpha, Superfamily Chironomoidea, and Family Simuliidae. They are known as “borrachudo” or “pium” in Brazil and as “black flies” in English-speaking countries. This study objective to report the characteristics of the Family Simuliidae. The research was carried out in studies related to quantitative aspects of the Family, Subfamily and Species (taxonomic groups) and conceptual aspects such as: biology, geographical distribution, species, life cycle, damage, economic importance, medicinal importance, biological aspects, and reproduction. A literature search was carried out containing articles published from 1950 to 2021. The mini-review was prepared in Goiânia, Goiás, from September to October 2021, through the Portal of Scientific Journals in Health Sciences, Pubmed, Online Scientific Library (Scielo), internet, ResearchGate, Academia.edu, Frontiers, Biological Abstract, Publons, Qeios, Dialnet, World, Wide Science, Springer, RefSeek, Microsoft Academic, Science, ERIC, Science Research.com, SEEK education, Periodicals CAPES, Google Academic, Bioline International and VADLO.

scholarly journals Detection and Control of Fusarium oxysporum from Soft Rot in Dendrobium officinale by Loop-Mediated Isothermal Amplification Assays

Biology ◽  
2021 ◽  
Vol 10 (11) ◽  
pp. 1136
Author(s):  
Caiyun Xiao ◽  
Rongyu Li
Keyword(s):  
Fusarium Oxysporum ◽  
Integrated Management ◽  
Elongation Factor ◽  
Lamp Assay ◽  
Soft Rot ◽  
Isothermal Amplification ◽  
Dendrobium Officinale ◽  
Control Effect ◽  
Loop Mediated Isothermal Amplification ◽  
And Control

Soft rot causing Fusarium oxysporum is one of the most destructive diseases of Dendrobium officinale Kimura et Migo in China that reduces D. officinale yield and quality. A key challenge for an integrated management strategy for this disease is the rapid and accurate detection of F. oxysporum on D. officinale. Therefore, a new loop-mediated isothermal amplification (LAMP) assay was developed for this purpose. In this study, the primers were selected and designed using the translation elongation factor-1α (TEF-1α) gene region as the target DNA sequence in order to screen the best system of reaction of LAMP to detect F. oxysporum through optimizing different conditions of the LAMP reaction, including time, temperature, concentrations of MgSO4, and concentrations of inner and outer primers. The optimized system was able to efficiently amplify the target gene at 62 °C for 60 min with 1.2 μM internal primers, 0.4 μM external primers, 7 mM Mg2+, and 5 fg/µL minimum detection concentration of DNA for F. oxysporum. The amplified products could be detected with the naked eye after completion of the reaction with SYBR green I. We were better able to control the effect of soft rot in D. officinale using fungicides following a positive test result. Additionally, the control effect of synergism combinations against soft rot was higher than 75%. Thus, LAMP assays could detect F. oxysporum in infected tissues of D. officinale and soils in field, allowing for early diagnosis of the disease.

scholarly journals Integrated management of tough lovegrass (Eragrostis plana Nees): associating chemical control tools and plant physiology

2021 ◽  
Vol 51 (2) ◽  
Author(s):  
Eduardo Avelino Faleiro ◽  
Diego Martins Chiapinotto ◽  
Fabiane Pinto Lamego ◽  
Carlos Eduardo Schaedler ◽  
Eduardo Bohrer de Azevedo
Keyword(s):  
Solar Radiation ◽  
Integrated Management ◽  
Dry Mass ◽  
Radiation Factor ◽  
Factor B ◽  
Randomized Design ◽  
Completely Randomized Design ◽  
Factor C ◽  
Resource Conditions ◽  
And Control

ABSTRACT: The objective of the study was to evaluate the efficiency of herbicides use in the control of tough lovegrass according to the availability of solar radiation and the presence or absence of flooded. Two experiments were conducted in a completely randomized design, in a 2x2x4 and 2x2x5 factorial scheme, where factor A was equivalent to the environment (natural or reduced radiation); factor B to water condition (with a 2 cm flooded or without); and, factor C the herbicides: cyhalofop butyl (315 g ha-1), glyphosate (1080 g ha-1), cyhalofop butyl + glyphosate (315 g ha-1 + 1080 g ha-1) and control (without application) in the first experiment. In the second experiment, the herbicides used were cyhalofop butyl (315 g ha-1), glyphosate (1080 g ha-1), sethoxydim (184g ha-1), imazethapyr (106 g ha-1) and control (without application). Glyphosate efficiently controls plants of tough lovegrass with four tillers (>90%), being superior to cyhalofop, imazethapyr and sethoxydim; independently, of resource conditions. Reduction in the availability of solar radiation generates less shoot dry mass production from the weed, and improves the control only by imazethapyr and cyhalofop. In general, a flooded condition does not affect tough lovegrass control by herbicides.

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