Papers by Aurelia Stîngaci
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Modern Biotechnologies – Solutions to the Challenges of the Contemporary World. Symposium Proceedings, 2021
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Studia Universitatis Moldaviae (Seria Ştiinţe Reale şi ale Naturii), Dec 1, 2010
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Revista Botanică, Nov 16, 2019
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Agrarnaâ nauka, Jul 1, 2019
In many countries in recent years, to use natural entomopathogenic pesticides to control the numb... more In many countries in recent years, to use natural entomopathogenic pesticides to control the number of pests. Potential agricultural production loss caused by the activity of pest organisms in the world was always a concern at international level. In many countries were established baculoviral preparations applied in practice in order to reduce the number of pests. In such context, the problem is connected to large application of baculoviral preparations that have become a reality only by elaboration and organization of production of such biological means, work registered after execution of deep biotechnological researches. The aim of the present paper is to discuss the results of two years attempt of biological control of H. cunea populations with a baculoviral product. Materials. For determination of concentration of baculoviral suspensions there were used different methods, especially electronic microscope. The isolation, detection and determination of the biological features of baculovirus isolates were carried out in accordance with generally accepted methods. Results. In the report there are also submitted the results of the joint application of the biological preparation Virin ABB-3. The preparation is based on viruses of nuclear polyhedrosesis and granuoses with cumulative and synergetic action. In such context, the problem is connected to large application of baculoviral preparation that have become a reality only by elaboration and organization of production of such biological means, work registered after execution of deep biotechnological researches. The criterion of stable ecological system and the methods restoration and construction were also analyzed. Testing of the preparation Virin-ABB-3 for control development, II generation, on plants has demonstrated a significant biological efficacy of 91,52% in comparison with that of chemical etalon Lepedocid 100 %. Meanwhile, the experiment in which viruses were used and successfully control of the species H.cunea persistently indicate that the insect viruses play an important role in restoring and constructing stable natural and antropinated ecology system.
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XIth International Congress of Geneticists and Breeders from the Republic of Moldova, 2021
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Genetics, Physiology and Plant Breeding, 2021
The global population is projected to increase by 30 % to 9,2 billion by 2050 and this increased ... more The global population is projected to increase by 30 % to 9,2 billion by 2050 and this increased population density is estimated to increase demand for food production by 70 %. One of the principal di-rections of biological plant protection is elaboration of technologies for production and application of bio-logical preparations for combat not only of the noxious insects but also of pathogen agents which cannot be efficiently combated by other means of biological control. This report presents the results of state reg-istration of 5 baculoviral, 1 bacterial and 3 fungal preparations for combating pest insects, phytopathogen agents and nematodes.
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Plant Protection – Achievements and Prospects, 2020
Biopesticides have also attracted great interest in the international research community, with a ... more Biopesticides have also attracted great interest in the international research community, with a significant increase in the number of publications devoted to the subject. At Institute of Genetics, Physiology and Plant Protection are prepared the bioinsecticides for use in Republic Moldova, mostly for the control In order to reduce the population of insect it is recommended utilization inoffensive preparations baculoviruses highly-pathogenic for the leaf-champing vermis of the H.cunea,were selected from the insect natural populations which is an efficient preparation for combating this pest in agricultural, onamental and forest biocenosis. This study aimed to highlight new agents for biological control of pest..
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Revista Botanică, Mar 31, 2015
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Modern Biotechnologies – Solutions to the Challenges of the Contemporary World. Symposium Proceedings, 2021
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XIth International Congress of Geneticists and Breeders from the Republic of Moldova, 2021
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Plant Protection – Achievements and Prospects, 2020
In the paper there are presented the results of the researches of existing methods of quality con... more In the paper there are presented the results of the researches of existing methods of quality control for cultures of insects for rearing is presented. A new express-method of biological material selection for H. cunea establishment has been approbated. This method may be suitable for monitoring of natural populations condition in systems of integrated plant protections of diferent agricultural, ornamental and forest crops with intensive anthropogenic loading.The results of the present study revealed the larvicidal potential of baculovirus isolates found in the larvae of H.cunea, local production of biopesticides, which will reduce the final cost of the product and will more accessible to farmer.
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Genetics, Physiology and Plant Breeding, 2021
This paper presents the conceptual conceptual vision a formulation technology for biopesticides i... more This paper presents the conceptual conceptual vision a formulation technology for biopesticides in which the active ingredient (baculovirus) is an active coal. Importantly, this indgredient protects the sen-sitive viral DNA from degrading in sunlight, but dissolves in the alkaline insect gut to release the virus, which then infects and kills the pest. We show, using this ingredient, in both laboratory bioassays and field tests, that this can extend the efficacy of the biopesticide well beyond the few hours of existing virus formulations, potentially increasing the spray interval and reducing the need for high application rates. Are presented both theoretical foundations and practical applications and described the results oriented for implementation and functionality of organic agriculture in Republic of Moldova.
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Functional Ecology of Animals, 2019
Biopesticides are mass-produced, biologically based agents used for the control of plant pests. T... more Biopesticides are mass-produced, biologically based agents used for the control of plant pests. They are an important part of integrated pest management (IPM), which aims to use complementary methods to manage pest populations at low levels, rather than eliminate them entirely. Biopesticides are being used on increasing scales and there is considerable interest in their potential as alternatives to conventional pesticides. Biopesticides have also attracted great interest in the international research community, with a significant increase in the number of publications devoted to the subject. At Institute of Genetics, Physiology and Plant Protection are prepared the bioinsecticides for use in Republic Moldova, mostly for the control. In order to reduce the population of insect it is recommended utilization of inoffensive preparations baculoviruses highlypathogenic for the leaf-champing vermis of the Hyphantria cunea, were selected from the insect natural populations which is an effic...
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Actual problems of zoology and parasitology: achievements and prospects
In the paper there are presented the results of the researches of existing methods of quality con... more In the paper there are presented the results of the researches of existing methods of quality control for cultures of insects for rearing is presented. It is shown that there is a need to search for new approaches to solving this problem. Testing of new methods of control and prediction of biological material viability was carried out on a laboratory culture of the fall webworm moth (Hyphantria cunea Drury). It was found that intensity of taxis manifestation can be considered as a criterion of population condition. This selection method can be used also for assessment of culture viability. A new express-method of biological material selection for H. cunea establishment has been approbated. It is based on the positive correlation between insect viability parameters and their trophotaxis intensity. This method may be suitable for monitoring of natural populations condition in systems of integrated plant protections of different agricultural, ornamental and forest crops with intensive ...
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Papers by Aurelia Stîngaci