Results 141 to 150 of about 129,697 (196)
Some of the next articles are maybe not open access.
1995
Abstract Rachel Carson’s Silent Spring (1962) dramatically focused public policy on the adverse effects of the indiscriminate and excessive use of inorganic and synthetic organic insecticides. The main concern was that these insecticides lacked selective activity - they were general biocides and, thus, toxic to most animal life.
Gary W Bennett, Byron L Reid
openaire +1 more source
Abstract Rachel Carson’s Silent Spring (1962) dramatically focused public policy on the adverse effects of the indiscriminate and excessive use of inorganic and synthetic organic insecticides. The main concern was that these insecticides lacked selective activity - they were general biocides and, thus, toxic to most animal life.
Gary W Bennett, Byron L Reid
openaire +1 more source
Bioavailability of insect growth regulator residues in citrus
Ecotoxicology, 2009The aim of this study was to increase the knowledge in the field of bioavailability of pollutants in agricultural food samples. Bioavailability of flufenoxuron, lufenuron, pyriproxyfen and fenoxycarb was studied in a common commodity as mandarin in vitro.
P, Payá +4 more
openaire +2 more sources
2000
Biologists in the early part of the 20th century believed that since the secondary sexual characteristics of insects were unaffected by castration, insects did not secrete hormones. This view was challenged by the conclusive experiments of Stephan Kopec in 1917, who showed by surgical maneuver, that insect metamorphosis was under the hormonal control ...
Herbert Oberlander, Donald L. Silhacek
openaire +1 more source
Biologists in the early part of the 20th century believed that since the secondary sexual characteristics of insects were unaffected by castration, insects did not secrete hormones. This view was challenged by the conclusive experiments of Stephan Kopec in 1917, who showed by surgical maneuver, that insect metamorphosis was under the hormonal control ...
Herbert Oberlander, Donald L. Silhacek
openaire +1 more source
Fluorescent insect growth regulators (FIGR's): A new tool for insect physiologists
Journal of Insect Physiology, 1976Abstract A compound was synthesized that fluoresces in the visible spectrum and has the properties of an insect juvenile hormone. When it was assayed against Aedes aegypti larvae, it produced larval-pupal and pupal-adult intermediates; when injected into allatectomized adult females, it restored normal egg development.
R T, Mayer +4 more
openaire +2 more sources
Insect hormones and growth regulators
Pesticide Science, 1983AbstractThe endocrine system that controls development and reproduction in insects has many unique features that could provide targets for insecticides with novel modes of action. Such insecticides, which act by disrupting the growth and development, are often called insect growth regulators.
openaire +1 more source
Insect Growth Regulators (IGRs)
1998In recent years many of the conventional methods of insect control by broadspectrum synthetic chemicals have come under assault and scrutiny because of their undesirable effects on human health and the environment. As a consequence, new approaches have been tested and implemented.
A. S. Perry +3 more
openaire +1 more source
Modeling insect growth regulators for pest management
Journal of Mathematical BiologyInsect growth regulators (IGRs) have been developed as effective control measures against harmful insect pests to disrupt their normal development. This study is to propose a mathematical model to evaluate the cost-effectiveness of IGRs for pest management.
Lou, Y, Wu, R
openaire +3 more sources
The use of insect growth regulators for the control of insect pests of cotton
International Journal of Pest Management, 1999Studies were conducted to evaluate the effectiveness of insect growth regulators for the control of cotton insect pests. Three field trials were carried out and the insect growth regulators including lufenuron (A 7814) and lufenuron plus profenofos (A 9441) were compared with lambda-cyhalothrin.
I. Javaid, R. N. Uaine, J. Massua
openaire +1 more source
Insect Growth Regulators with Juvenile Hormone Activity
Annual Review of Entomology, 1975The term insect growth regulator (IGR) was designed to describe a new class of bio-rational compounds. Through greater selectivity of action these compounds appear to fit the requirements for third generation pesticides, such as the absence of undesirable effects on man, wildlife, and the environment and compatibility with modern insect pest management
openaire +2 more sources
The role of insect growth regulators in arthropod control
Parasitology Today, 1993Insect growth regulators (IGRs) represent a relatively new category of insect control agents aimed mainly at covering the need for safer compounds and overcoming the development o f resistance to 'classical' insecticides. The various types of IGR are reviewed here by Jean-Francois Graf and their mechanism of action, their practical application and ...
openaire +2 more sources