Search PubMed⌕ Search

SEARCH · Search PubMed

Results for “INSECT CONTROL”

Search indexed PubMed citations on genomics, clinical trials, systematic reviews and public health. Explore titles, authors and supplied subject terms, then open the PubMed record.

Quote a phrase for an exact phrase match. Source license links do not imply unrestricted reuse.

At least 1,243 records · Page 69Linked to original sources
PubMedDate not supplied

[Control of arthropod vectors of human diseases in intertropical Africa: its importance (author's transl)].

Intertropical Africa is the first area in the world for the frequency of arthropod born human diseases, such as malaria, trypanosomiasis, viral infections (f.i.yellow fever), various filariasis and chiefly onchocerciasis. Control of arthropod vectors is very important indeed in this area. It requires a closed collaboration between entomologists, biologists, hygienists and tropical physicians. Chemical control is still preponderant but it must be associated, as often as possible, with physical, biological and genetic means of control.

Africa↗
PubMed1993

Evolution of Drosophila insecticide resistance.

The impact of insecticide resistance is well documented. It includes the toxic effects of pesticides on the environment and the cost of the increased amounts of insecticides required to effectively control resistant insects. Resistance evolves by the selection of genes that confer tolerance to insecticides. Several resistance genes have been identified and cloned in Drosophila, including genes for mutant target molecules and genes that increase insecticide degradation. Drosophila is a useful system to understand the evolution of quantitative traits in general as well as the population genetics of insecticide resistance. Through it, we may hope to understand the relationship between discrete genetic change and continuously varying characters. In addition, molecular genetic techniques developed using Drosophila can eventually be transferred to other insects in order to help control pest populations.

Acetylcholinesterase↗
PubMed1983

Granulosis viruses, with emphasis on the GV of the Indian meal moth, Plodia interpunctella.

The granulosis viruses and nuclear polyhedrosis viruses are being considered for use as biological insecticides for control of their insect hosts. Many of these insect species, which include some of the most serious pests of agriculture and forests, have become difficult to control because they have developed resistance to chemical insecticides. Several laboratory and field studies have demonstrated that the baculoviruses (GV and NPV) are promising alternatives to chemicals for the control of economically important insects. These viruses are highly virulent, selective, and stable, and the impact on the environment following their application is minimal. A decision concerning the application of baculoviruses to stored grain and field crops must be based upon a prudent consideration of the benefits to be obtained and the potential risks of their use. Such decisions should be made only after consideration of the physical, chemical, and biological properties of these viruses. In addition, methods must be developed for the unequivocal identification of these viruses, and their effects on nontarget species at the cellular and molecular levels must be investigated. This can best be accomplished if a sufficient body of knowledge regarding the molecular properties of these viruses and their infection process is accumulated by an extensive quantitative approach. Much of this knowledge is lacking because, prior to their consideration for use as insecticides, the baculoviruses appeared to have little medical or economic importance. As a result, interest in studying them was limited. It has become obvious that the molecular properties of these viruses must be investigated if full advantage is to be taken of using them as insect control agents, and if present and future problems concerning their use as insecticides are to be handled properly. Fundamental research on the biochemical and biophysical properties of baculoviruses has concentrated mainly on a variety of nuclear polyhedrosis viruses (Harrap, 1972a,b; Harrap et al., 1977; Summers and Smith, 1975a,b; Arif and Brown, 1975). Much of this progress can be attributed to tissue culture-host cell systems available for the NPVs. The in vitro host system(s) has allowed insect virologists to make phenomenal strides in understanding the cellular and molecular events of virus infection, and, in addition, to enter the era of biochemical sophistication in which animal virology is found at present.(ABSTRACT TRUNCATED AT 400 WORDS)

Animals↗
PubMed1993

Community participation in vector-borne disease control.

Because vertical approaches, such as insecticidal house-spraying, to vector control problems have not been very successful in many instances in reducing the incidence of diseases such as malaria and Chagas, combined with the fact that there have been resurgences of some diseases, greater attention has been focused on 'bottom-up'-type control strategies. However, many attempts to actively involve the community in reducing its risks of becoming ill have met with failure. It has usually proved difficult to motivate communities into action, but there have been some successes, although it is generally too early to know whether such successes can be sustained. Apart from greater efforts to educate communities to disease risks and disease prevention methods, sociologists and anthropologists argue that we need to listen more to the people and pay greater attention to their beliefs and customs. The present paper discusses the problems of introducing self-help methods to minimize vector-borne disease transmission, and reviews the successes and failures of this approach.

Animals↗