Suppression of Aedes aegypti (Diptera: Culicidae) using augmentative release of dragonfly larvae (Odonata: Libellulidae) with community participation in Yangon, Myanmar

1990 ◽  
Vol 80 (2) ◽  
pp. 223-232 ◽  
Author(s):  
Anthony Sebastian ◽  
Myint Myint Sein ◽  
Myat Myat Thu ◽  
Philip S. Corbet
Keyword(s):  
Growth Rate ◽  
Aedes Aegypti ◽  
Adult Population ◽  
Water Storage ◽  
Domestic Water ◽  
Larval Population ◽  
The Third ◽  
Ready Availability ◽  
Augmentative Release ◽  
Control Operators

AbstractA pilot field study, involving periodic augmentative release of predatory larvae of a dragonfly, Crocothemis servilia (Drury), to suppress a mosquito, Aedes aegypti (Linnaeus), was conducted during the rainy season in Yangon (Rangoon). More than 90% of pre-adult A. aegypti occurred in domestic water-storage containers. Evaluations of larval and adult numbers of A. aegypti were made half-monthly three times before, and seven times after, treatment began. Four laboratory-reared, three-week-old C. servilia larvae were placed in each major source of A. aegypti larvae immediately after the third evaluation and then monthly for three successive months. Such treatment reduced the larval population of A. aegypti to a very low level in two to three weeks and suppressed it progressively until the trial ended; the adult population was greatly reduced after about six weeks and was progressively diminished thereafter until the trial ended. The trial's success was ascribed to: the virtual confinement of pre-adult stages of the target mosquito to containers accessible to control operators; the behaviour, growth rate, survival and ready availability of the chosen species of dragonfly; and the awareness and enthusiastic participation of local householders.

Relationship between Aedes aegypti production and occurrence of Escherichia coli in domestic water storage containers in rural and sub-urban villages in Thailand and Laos

Acta Tropica ◽  
2013 ◽  
Vol 126 (3) ◽  
pp. 177-185 ◽  
Author(s):  
Nsa Dada ◽  
Nanthasane Vannavong ◽  
Razak Seidu ◽  
Audrey Lenhart ◽  
Thor Axel Stenström ◽  
...  
Keyword(s):  
Escherichia Coli ◽  
Aedes Aegypti ◽  
Water Storage ◽  
Domestic Water ◽  
Storage Containers ◽  
Urban Villages

scholarly journals Comparative assessment of the bacterial communities associated with Aedes aegypti larvae and water from domestic water storage containers

2014 ◽  
Vol 7 (1) ◽  
pp. 391 ◽  
Author(s):  
Nsa Dada ◽  
Estelle Jumas-Bilak ◽  
Sylvie Manguin ◽  
Razak Seidu ◽  
Thor-Axel Stenström ◽  
...  
Keyword(s):  
Aedes Aegypti ◽  
Bacterial Communities ◽  
Water Storage ◽  
Comparative Assessment ◽  
Domestic Water ◽  
Storage Containers

scholarly journals Evaluation of Panoramic Radiographs in Relation to the Mandibular Third Molar and to Incidental Findings in an Adult Population

2020 ◽  
Author(s):  
Josefine Cederhag ◽  
Nina Lundegren ◽  
Per Alstergren ◽  
Xie-Qi Shi ◽  
Kristina Hellén-Halme
Keyword(s):  
Incidental Findings ◽  
Adult Population ◽  
Inferior Alveolar Nerve ◽  
Third Molar ◽  
Patient Positioning ◽  
Vertical Position ◽  
Surgical Removal ◽  
Third Molars ◽  
Panoramic Radiographs ◽  
The Third

Abstract Objectives The aim was to evaluate the characteristics of the mandibular third molars, especially in relation to the inferior alveolar nerve. Further aims were to investigate incidental findings in panoramic radiographs in an adult population, and to investigate image quality related to patient positioning. Materials and Methods From a previous study with 451 randomly selected adult participants who lived in Sweden, 442 panoramic radiographs from four dental public health clinics were used. The third molars’ characteristics and relation to inferior alveolar nerve were evaluated. Incidental findings and patient positioning were recorded. Statistical Analysis Frequency analysis was used to investigate the occurrence of all findings and their possible interconnections. Whether the patients’ age or gender had an impact or not was also analyzed. Results The third molars were erupted in vertical position among 73% regardless of age. When retained or semi-retained, they were most commonly in mesioangular positions. The inferior alveolar nerve was located inferior to the roots in 52%, whereas an overlapped position was most common if the third molar was retained (90%), semi-retained (83%) or the age was less than 30 years (66%). Common incidental findings were apical radiolucencies, idiopathic osteosclerosis, and tooth fragments. Suboptimal patient positioning was found in one-third of the radiographs. Conclusions Panoramic radiography is a useful method to evaluate third molar prior to surgical removal and may be the only image required. Most incidental findings on panoramic radiographs does not seem to require any further odontological management.

scholarly journals The effect of feeding high levels of low-quality proteins to growing chickens

1975 ◽  
Vol 34 (3) ◽  
pp. 363-373 ◽  
Author(s):  
E. Wetnli ◽  
T. R. Morris ◽  
T. P. Shresta
Keyword(s):  
Growth Rate ◽  
Amino Acid ◽  
Dietary Protein ◽  
Soya Bean ◽  
Maximum Efficiency ◽  
Food Utilization ◽  
The Third ◽  
Bean Meal ◽  
Groundnut Meal ◽  
Soya Bean Meal

1. Three growth trials were done using male broiler chicks. In the first two trials, groundnut meal was used, with and without supplementary methionine and lysine. In the third trial, soya-bean meal was used with and without supplementary methionine. Protein levels ranged in the first trial from 120 to 420 g/kg diet and in the third trial from 120 to 300 g/kg diet. Thus the assumed minimal amino acid requirements of the chick were supplied by high levels of low-quality dietary protein.2. Diets based on cereals and groundnut meal did not support maximum live-weight gain or maximum efficiency of food utilization at any level of dietary protein. When the principal deficiencies of lysine and methionine were corrected, this protein mixture was capable of supporting the same growth rate as a control diet of cereals and herring meal.3. Diets based on maize and soya-bean meal did not support quite the same growth rate as similar diets supplemented with methionine, even though the protein level in the unsupplemented diets was sufficient to meet the assumed methionine requirements.4. These results are interpreted as examples of amino acid imbalance in diets composed of familiar feeding-stuffs. It is concluded that one cannot assume that the poor quality of a protein source can always be offset by increasing the concentration of dietary protein.

Economic Governance of a Populist Government

2021 ◽  
Vol 45 (1) ◽  
pp. 48-63
Author(s):  
Panagiotis Liargovas ◽  
Nikolaos Apostolopoulos
Keyword(s):  
Growth Rate ◽  
The Political ◽  
Economic Governance ◽  
Structural Reforms ◽  
The Third ◽  
Political Choices ◽  
Of Greece ◽  
The Eu

Abstract The focus of this article is on the main aspects of economic governance in Greece during the period 2015–19 where the syriza-anel coalition party was in power. In August 2015, the syriza-anel government faced the dilemma either to accept a new agreement with the EU partners (as eventually happened) or go bankrupt and leave the Eurozone, becoming detached from EU solidarity mechanisms. A third program was agreed, offering Greece an additional €86 billion loan over a three-year period. The third programme was unnecessary considering that the syriza-anel governance inherited 0.8% growth rate and some progress in the structural reforms demanded during the first two agreements in 2010 and 2011. However, the political choices made had the consequence of Greece returning to recession in 2015 and 2016.

scholarly journals Observations on the predatory potential of Lutzia fuscana on Aedes aegypti larvae: implications for biological control (Diptera: Culicidae)

2016 ◽  
Vol 48 (2) ◽  
pp. 137
Author(s):  
Soujita Pramanik ◽  
Sampa Banerjee ◽  
Soumyajit Banerjee ◽  
Goutam K. Saha ◽  
Gautam Aditya
Keyword(s):  
Biological Control ◽  
Aedes Aegypti ◽  
Biological Control Agent ◽  
Instar Larva ◽  
Control Agent ◽  
The Body ◽  
Larval Habitats ◽  
Larval Stages ◽  
Augmentative Release ◽  
Predatory Potential

Among the natural predators, larval stages of the mosquito <em>Lutzia fuscana (</em>Wiedemann, 1820) (Diptera: Culicidae) bear potential as a biological control agent of mosquitoes. An estimation of the predatory potential of the larva of <em>L. fuscana</em> against the larva of the dengue vector <em>Aedes aegypti</em> (Linnaeus, 1762) (Diptera: Culicidae) was made to highlight its use in vector management. Laboratory experiments revealed that the larva of<em> L</em>. <em>fuscana</em> consumes 19 to 24 <em>A. aegypti</em> larvae per day, during its tenure as IV instar larva. The consumption of <em>A. aegypti</em> larvae was proportionate to the body length (BL) and body weight (BW) of the predatory larva<em> L. fuscana</em> as depicted through the logistic regressions: y = 1 / (1 + exp(-(-2.09 + 0.35*BL))) and y = 1 / (1 + exp(-(0.4+ 0.06*BW))). While the prey consumption remained comparable among the days, the net weight gained by the <em>L</em>. <em>fuscana</em> larva showed a decreasing trend with the age. On the basis of the results, it is apparent that the larva of the mosquito <em>L. fuscana</em> can be used in the regulation of the mosquito <em>A. aegypti</em> through augmentative release, particularly, in the smaller mosquito larval habitats.

scholarly journals Epidemiological Aspects of Overweight and Obesity among the Adult Population of the Voronezh Region

2019 ◽  
Vol 18 (1) ◽  
pp. 82-87
Author(s):  
N. V. Gabbasova ◽  
N. V. Dzen
Keyword(s):  
Growth Rate ◽  
Eating Behavior ◽  
Adult Population ◽  
Overweight And Obesity ◽  
Comparative Assessment ◽  
Average Annual Growth Rate ◽  
Annual Growth Rate ◽  
Ideal Weight ◽  
Voronezh Region ◽  
Prevalence Of Obesity

Relevance Obesity has a major impact on the health and well-being of the population, and the prevention of overweight and obesity is a public health priority in many countries around the world.Purpose: was to study the prevalence of obesity among the adult population of the Voronezh region for the period 1996 – 2017, a comparative assessment of the structure of eating behavior in people with normal weight and overweight/obesity.Methods. The research material was data the annual form No. 12 of Rosstat for 1996 through 2017. In order to study eating disorders, 150 people aged from 20 to 61 years were surveyed using the Dutch questionnaire. The main types of eating behavior among the respondents were determined. Ideal weight was calculated by Brock's field formula (1891), the upper limit of normal body weight was considered ideal weight plus 15% ideal weight. Statistical data processing was performed using Microsoft Excel 2007.Results. The study on the prevalence of obesity was conducted among the adult population of the Voronezh region for the period 1996-2017. The Prevalence of obesity over the period studied has increased by 8 times, the average annual growth rate over the last 4 years was 30,04%. The study of the types of food behavior in respondents with normal and overweight / obesity showed that in most cases the respondents observed pathological types (most often mixed and external). A comparative assessment of the types of eating behavior did not show any significant differences between the groups.Conclusions. The increase in the prevalence of obesity, the high average annual growth rate indicates the increased impact of risk factors on the formation of obesity and the ineffectiveness of the strategy and tactics of dealing with this pathology. The absence of significant differences in the structure of eating behavior does not allow us to consider it a risk factor for obesity. 

scholarly journals THE EFFECT OF THE DOE WEIGHT ON HER REPRODUCTIVE EFFICIENY

2021 ◽  
Vol 22 (1) ◽  
pp. 131-142
Author(s):  
Mohammad Ebrahim Ahmed ◽  
Hussain Yawr Hussain
Keyword(s):  
Growth Rate ◽  
Litter Size ◽  
Conception Rate ◽  
The Other ◽  
Gestation Period ◽  
Reproductive Efficiency ◽  
Litter Weight ◽  
The Third ◽  
Other Hand

Thirty-six local dose have been used and were divided in to three groups sacording to weight, in each group twelve dose. In the first group the weights of the dose were higher than ( 2.5 kgs) and less than (3 kgs). The second groups was higher than 3 kgs) and less than (3.5 kgs). The third group was higher than (3.5 kgs) and less than (4 kgs). The aim of this study was to obtain the effect of doe weight on her reproductive efficiency (gestation period, litter size, litter weight at birth and weaning, growth rate of offspring preweaning, conception rate and preweaning mortility).  The weight of the doe had no significant effect upon the gestation period and this period was 30.9, 31.2, 31.3 days for the three groups respectively, on the other hand the litter size was affected significantly by doe weight and litter size was at birth and preaweaning (5.1 , 5.8 and 6.2), (4.5, 5.3 and 5.7) for the three groups respectively. The offspring weight at birth and weaning was affected significantly by doe weight and this weight was (40.1 , 48.2 and 53.3 gms), (203.6, 227.5 and 233.8 gms) for the three groups respectively while the conception rate was not affected by doe weight. The mortility percentage in the prewaning period was not significantly by doe weight

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