The Sterile Male Technique and its Possible Use for Codling Moth Eradication

1964 ◽  
Vol 96 (1-2) ◽  
pp. 143-143 ◽  
Author(s):  
M. D. Proverbs
Keyword(s):  
Insecticide Resistance ◽  
Codling Moth ◽  
Sterile Male ◽  
Native Population ◽  
Normal Behaviour ◽  
Economical Method ◽  
Beneficial Insects ◽  
The World ◽  
Dominant Lethality

Chemicals must be used to control the codling moth, Carpocapsa pomonella (L.), in most apple and pear growing areas throughout the world. Unfortunately, this practice has caused or contributed to greatly increased mite populations, decimation of many beneficial insects, insecticide resistance, soil poisoning, and other problems. Successful use of the sterile male technique against the codling moth would eliminate or alleviate a number of these problems. This technique consists essentially in the sustained over-flooding of the native population with sexually sterile males. The main prerequisites for its use include: (1) a method of inducing sterility or dominant lethality in the sperm without affecting normal behaviour or longevity of the male, (2) the released insects themselves must not be injurious or noxious, ( 3 ) the method of release should permit intimate mingling of the sterile males with the native population, and (4) the availability of an economical method of mass culturing the insect. Photographs illustrate how these prerequisites were investigated for the codling moth.

Monitoring and Characterization of Insecticide Resistance Codling Moth (Lepidoptera: Tortricidae) in Four Western States

1993 ◽  
Vol 86 (1) ◽  
pp. 1-10 ◽  
Author(s):  
L. G. Varela ◽  
S. C. Welter ◽  
V. P. Jones ◽  
J. F. Brunner ◽  
H. Riedl
Keyword(s):  
Insecticide Resistance ◽  
Codling Moth

The character or the variation: the genetic analysis of the insecticide-resistance phenotype

2000 ◽  
Vol 90 (1) ◽  
pp. 3-7 ◽  
Author(s):  
J.A. McKenzie
Keyword(s):  
Genetic Analysis ◽  
Insecticide Resistance ◽  
Integrated Pest Management ◽  
Pest Management ◽  
Genetic Basis ◽  
Genotypic Variation ◽  
Resistance Mechanisms ◽  
Beneficial Insects ◽  
Rare Mutations ◽  
Evolution Of Resistance

AbstractIn this critique it is argued that the genetic basis of the evolution of resistance is dependent on how the phenotypic, and underlying genotypic, variation is channelled during a selective response. A polygenic response is preferentially favoured if selection acts within the phenotypic distribution of susceptibles; a monogenic response is predicted if selection screens rare mutations with phenotypes outside that susceptible distribution. The relevance of this model to the method of genetic analysis, the prediction of resistance mechanisms to novel insecticides, the generation of resistant beneficial insects and the development of the most effective resistance and integrated pest management programmes is discussed.

scholarly journals Evaluation of the resistance to insecticides in Aedes aegypti, transmitter of dengue, in Latin America

2020 ◽  
Vol 8 (15) ◽  
pp. 23-28
Author(s):  
Amparo Gabriela Hernández Ramos
Keyword(s):  
Infectious Disease ◽  
Latin America ◽  
Aedes Aegypti ◽  
Insecticide Resistance ◽  
Vector Control ◽  
Latin American ◽  
Female Mosquito ◽  
The World ◽  
Different Seasons ◽  
Latin American Countries

Dengue is an infectious disease with high rates of morbidity and mortality, transmitted by the bite of the female mosquito of the genus Aedes aegypti, vector distributed in tropical and subtropical areas throughout the world. America is one of the most affected regions. This vector is controlled through insecticides that due to its constant use in populations, a resistance phenomenon has been produced. The objective of this review is to identify the situation of insecticide resistance in populations of Aedes aegypti in Latin American countries. In this region, several insecticides have been used for vector control; in the last 10 years insecticides of the pyrethroid and organophosphorus group have been used as adulticides for the control of the mosquito, conditioning resistance. Some insecticides such as organophosphates and deltamethrin, despite of not being intensively used in Latin American countries, also show resistance. Improvements in vector control are required, including the rotation of the insecticides during the different seasons, as well as innovating techniques and forms of vector control

scholarly journals Factors influencing the re-emergence of plague in Madagascar

2020 ◽  
Vol 4 (4) ◽  
pp. 423-433
Author(s):  
Jennifer Alderson ◽  
Max Quastel ◽  
Emily Wilson ◽  
Duncan Bellamy
Keyword(s):  
Infectious Disease ◽  
Insecticide Resistance ◽  
Yersinia Pestis ◽  
Human Behaviour ◽  
Factors Influencing ◽  
The World ◽  
Areas Of Concern ◽  
Causative Bacterium ◽  
Climate Events

Plague is an infectious disease found worldwide and has been responsible for pandemics throughout history. Yersinia pestis, the causative bacterium, survives in rodent hosts with flea vectors that also transmit it to humans. It has been endemic in Madagascar for a century but the 1990s saw major outbreaks and in 2006 the WHO described the plague as re-emerging in Madagascar and the world. This review highlights the variety of factors leading to plague re-emergence in Madagascar, including climate events, insecticide resistance, and host and human behaviour. It also addresses areas of concern for future epidemics and ways to mitigate these. Pinpointing and addressing current and future drivers of plague re-emergence in Madagascar will be essential to controlling future outbreaks both in Madagascar and worldwide.

Some Theoretical Aspects of Economic Development

1954 ◽  
Vol 14 (4) ◽  
pp. 333-345 ◽  
Author(s):  
Robert E. Baldwin
Keyword(s):  
Economic Development ◽  
World War Ii ◽  
Degree Of Freedom ◽  
Development Projects ◽  
World War ◽  
Native Population ◽  
Political Independence ◽  
The World ◽  
Freedom Of Action

While the problem of economic development long has been a standard topic for economic historians, it has not been until recent years that most other modern economists have displayed a more dian casual interest in this subject. Two sets of factors have been particularly important in stimulating this new activity. The first, of course, concerns the ever-increasing efforts being made to accelerate economic development in the so-called “backward” regions of the world. Since World War II a number of the countries in the economically backward list have received eitfier complete political independence or a much greater degree of freedom. And one of the major ways they are using this new freedom of action is to plan and undertake extensive governmental development projects. For rightly or wrongly most of these countries feel that their former rulers thwarted the type of economic development most beneficial to the native population, and they are almost fanatically anxious to remedy this condition.

REMOVAL OF WATER POLLUTANTS BY APPLICATION OF NATURAL ADSORBENTS

2018 ◽  
Vol 28 (4) ◽  
pp. 1271-1276
Author(s):  
Viktorija Bezhovska ◽  
Erhan Mustafa ◽  
Shaban Jakupi ◽  
Flakrim Aliu ◽  
Nadica Todorovska ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Microbial Biomass ◽  
Environmental Pollution ◽  
Water Systems ◽  
Inorganic Materials ◽  
Clean Water ◽  
Economical Method ◽  
Major Threat ◽  
Natural Adsorbents ◽  
The World

The availability of clean water is a challenge around the world. In recent decades, environmental pollution through the excessive discharge of organic and inorganic water in water contributes to large quantities of wastewater. These halts are a major threat to the surrounding ecosystem and human health if they are not treated before being discharged into the environment. Therefore, there is an increasing attraction for the development and improvement of more accessible methods for wastewater treatment.Today, the adsorption, as a method for purifying the waters from pollutants, is paid great attention because it represents a simple, efficient and economical method, which gives the opportunity to apply a large number of natural and synthetic adsorbents.In the group of natural adsorbents that are used to remove water from the water systems, there are more materials, such as: inorganic materials, activated carbon based on biomass, agricultural solid waste, biosorbents and microbial biomass.

Investigation of insecticide-resistance status of Cydia pomonella in Chinese populations

2015 ◽  
Vol 105 (3) ◽  
pp. 316-325 ◽  
Author(s):  
X.-Q. Yang ◽  
Y.-L. Zhang
Keyword(s):  
Insecticide Resistance ◽  
Cydia Pomonella ◽  
Resistance Mutation ◽  
Codling Moth ◽  
Northwestern China ◽  
Invasive Pest ◽  
Native Page ◽  
Chinese Populations ◽  
Care Activity ◽  
Chlorpyrifos Ethyl

AbstractThe codling moth Cydia pomonella (L.) is an economically important fruit pest and it has been directly targeted by insecticides worldwide. Serious resistance to insecticides has been reported in many countries. As one of the most serious invasive pest, the codling moth has populated several areas in China. However, resistance to insecticides has not been reported in China. We investigated the insecticide-resistance status of four field populations from Northwestern China by applying bioassays, enzyme activities, and mutation detections. Diagnostic concentrations of lambda-cyhalothrin, chlorpyrifos-ethyl, carbaryl, and imidacloprid were determined and used in bioassays. Field populations were less susceptible to chlorpyrifos-ethyl and carbaryl than laboratory strain. Insensitive populations displayed an elevated glutathione S-transferases (GSTs) activity. Reduced carboxylesterase (CarE) activity was observed in some insecticide insensitive populations and reduced acetylcholinesterase activity was observed only in the Wuw population. The cytochrome P450 polysubstrate monooxygenases activities in four field populations were not found to be different from susceptible strains. Neither the known-resistance mutation F399V in the acetylcholinesterase (AChE) gene, ace1, nor mutations in CarE gene CpCE-1 were found in adult individuals from our field populations. Native-PAGE revealed that various CarE isozymes and AChE insensitivity were occurring among Chinese populations. Our results indicate that codling moth populations from Northwestern China were insensitivity to chlorpyrifos-ethyl and carbaryl. Increased GST activity was responsible for insecticides insensitivity. Decreased CarE activity, as well as the presence of CarE and AChE polymorphisms might also be involved in insecticides insensitivity. New management strategies for managing this pest are discussed.

INFLUENCE OF GAMMA RADIATION ON THE DEVELOPMENT AND FERTILITY OF THE CODLING MOTH, CARPOCAPSA POMONELLA (L.) (LEPIDOPTERA: OLETHREUTIDAE)

1962 ◽  
Vol 40 (3) ◽  
pp. 401-420 ◽  
Author(s):  
M. D. Proverbs ◽  
J. R. Newton
Keyword(s):  
Gamma Radiation ◽  
Mating Behavior ◽  
High Mortality ◽  
Adult Stage ◽  
Adult Emergence ◽  
Codling Moth ◽  
Adult Longevity ◽  
Radiation Induced ◽  
Dominant Lethality

Exposure of the mature pupa or the newly emerged adult of the codling moth, Carpocapsa pomonella (L.), to 40,000 rads of gamma radiation induced dominant lethality in at least 98% of the sperm without affecting adult emergence, mating behavior, or adult longevity. Higher dosages decreased the frequency of mating. Irradiation of eggs, mature larvae, or young pupae induced dominant lethality in a high percentage of the sperm, but caused prohibitively high mortality and frequently reduced mating. The female was more radiosensitive than the male. In general, sensitivity decreased as development progressed from the egg to the adult stage.

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