The objective of this study was to evaluate the efficiency of Moroccan Bt strains against neonate larvae, third instar larvae and emerged adults of Ceratitis capitata. This Mediterranean fruit fly causes serious damag...The objective of this study was to evaluate the efficiency of Moroccan Bt strains against neonate larvae, third instar larvae and emerged adults of Ceratitis capitata. This Mediterranean fruit fly causes serious damages to Argan forest and other agricultural plants. There is no successful control program of this pest fly in the endemic Argan forest in Morocco. A single-dose test was performed on neonate larvae (25 μL/g) and adult (333.33 μL/g), when three doses of Bt toxins (50 μL/g, 100 μL/g and 150 μL/g) were tested against third instar of C. capitata. Among the twenty-six Bt strains examined, local Bt13.4 and Bt A7 strains showed highest toxicity levels against larvae and adults, when compared to the reference strain, Bacillus thuringiensis subsp. israelensis HD567 “code 4Q1”, and commercial product “Skeetal”. One hundred percent mortality was observed against neonate larvae after 7 days of application by Bt 13.4 toxin. Third instar larvae were very susceptible to Bt A7 and Bt M-Ag 21.6 strains with 68% mortality (Lethal Concentration: LC50 = 1.115) at a dose of 150 μL/g. The Bt A7 strain was also highly toxic to adults with 81.66% of mortality after 7 days of application. This study demonstrated that some of our collection Bt strains can contribute to integrated C. capitata management system with strong biological control components.展开更多
Many domestic and international scholars have done a wide range of researches on electromagnetictheory and technology and have made some achievements. Electromagnetic technology has been used inforest pests control as...Many domestic and international scholars have done a wide range of researches on electromagnetictheory and technology and have made some achievements. Electromagnetic technology has been used inforest pests control as a convenient and high-efficient physics means. This article summarizes the currentstudy of the electromagnetic biological effect and introduces the application of microwave, pulsedelectromagnetic field and electrostatic field to forest pests control. The research direction and prospect of theapplication of electromagnetic theory and technology to forest pests control are also discussed.展开更多
Using the viruses to sustainable control forest pest insects were reviewed in this paper. And the status of forest pest insects and bio-control technique in China were introduced. The criterion of stable ecological sy...Using the viruses to sustainable control forest pest insects were reviewed in this paper. And the status of forest pest insects and bio-control technique in China were introduced. The criterion of stable ecological system and the methods of restoration and construction were also analyzed. Meanwhile, the experiment in which 4 species of insect viruses were used and successfully control the forest pest insects persistently indicate that the insect viruses play an important role in restoring and constructing stable forest ecology system.展开更多
文摘The objective of this study was to evaluate the efficiency of Moroccan Bt strains against neonate larvae, third instar larvae and emerged adults of Ceratitis capitata. This Mediterranean fruit fly causes serious damages to Argan forest and other agricultural plants. There is no successful control program of this pest fly in the endemic Argan forest in Morocco. A single-dose test was performed on neonate larvae (25 μL/g) and adult (333.33 μL/g), when three doses of Bt toxins (50 μL/g, 100 μL/g and 150 μL/g) were tested against third instar of C. capitata. Among the twenty-six Bt strains examined, local Bt13.4 and Bt A7 strains showed highest toxicity levels against larvae and adults, when compared to the reference strain, Bacillus thuringiensis subsp. israelensis HD567 “code 4Q1”, and commercial product “Skeetal”. One hundred percent mortality was observed against neonate larvae after 7 days of application by Bt 13.4 toxin. Third instar larvae were very susceptible to Bt A7 and Bt M-Ag 21.6 strains with 68% mortality (Lethal Concentration: LC50 = 1.115) at a dose of 150 μL/g. The Bt A7 strain was also highly toxic to adults with 81.66% of mortality after 7 days of application. This study demonstrated that some of our collection Bt strains can contribute to integrated C. capitata management system with strong biological control components.
基金Supported by the National Nature Science Foundation of China (grant No. 30471384 )
文摘Many domestic and international scholars have done a wide range of researches on electromagnetictheory and technology and have made some achievements. Electromagnetic technology has been used inforest pests control as a convenient and high-efficient physics means. This article summarizes the currentstudy of the electromagnetic biological effect and introduces the application of microwave, pulsedelectromagnetic field and electrostatic field to forest pests control. The research direction and prospect of theapplication of electromagnetic theory and technology to forest pests control are also discussed.
基金National Natural Sciences Fund Project (30671688)
文摘Using the viruses to sustainable control forest pest insects were reviewed in this paper. And the status of forest pest insects and bio-control technique in China were introduced. The criterion of stable ecological system and the methods of restoration and construction were also analyzed. Meanwhile, the experiment in which 4 species of insect viruses were used and successfully control the forest pest insects persistently indicate that the insect viruses play an important role in restoring and constructing stable forest ecology system.
