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Ehsan Borzoui - One of the best experts on this subject based on the ideXlab platform.
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acute toxicity and sublethal effects of artemisia sieberi besser on digestive physiology cold tolerance and reproduction of trogoderma granarium everts col dermestidae
Journal of Asia-pacific Entomology, 2017Co-Authors: Gadir Nouriganbalani, Ehsan BorzouiAbstract:Abstract Trogoderma granarium, the Khapra beetle, is a major pest of cereal grains and nuts. In this research, the lethal and sublethal effects of Artemisia sieberi Besser essential oil (EO) was evaluated against 4th instar larvae of T. granarium under the laboratory conditions. Bioassays showed that the larvae were susceptible to both contact and fumigant toxicity. In contact and fumigant toxicity the calculated LD50 and LC50 were 44.3 μg/cm2 and 33.5 μL/L air, respectively. To assess the sublethal effects, 4th instar larvae were exposed to A. sieberi EO in contact (LD25 and LD50) and fumigant (LC25 and LC50) action. The larvae that exposed to LD50 of contact toxicity showed the lowest amylolytic activity (0.064 ± 0.007 mU/Individual) and intensity of bands. Control larvae had greater weight gain and consuming food compared to treated larvae. Furthermore, the highest and the lowest values of relative consumption rate (RCR) and relative growth rate (RGR) were observed on control (0.50 ± 0.02 and 0.084 ± 0.005 mg/mg/day) and LD50 of contact toxicity (0.26 ± 0.02 and 0.052 ± 0.002), respectively. Insects exposed to EO had smaller amounts of protein, glycogen and lipid content than control. Survival rate of EO-treated larvae after exposure to low temperature showed that the potency of contact toxicity was higher than fumigant toxicity for decrease of cold tolerance. Finally, exposure to EO in larval stage reduced the pupal and adults weight, longevity of female, fecundity and fertility. Our findings showed that A. sieberi EO has significant potential for use in controlling T. granarium, in both contact and fumigant applications.
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lethal and sublethal effects of essential oils from artemisia khorassanica and vitex pseudo negundo against plodia interpunctella lepidoptera pyralidae
Environmental Entomology, 2016Co-Authors: Ehsan Borzoui, Bahram Naseri, Zahra Abedi, Mohammad Sadegh KarimipormehrAbstract:Plodia interpunctella (Hubner, 1813) is a polyphagous and key pest of different stored products worldwide. The lethal and sublethal effects of essential oils of Artemisia khorassanica Podl. and Vitex pseudo-negundo (Hausskn) were studied on P. interpunctella The chemical constituents of the essential oils were also assessed using gas chromatography-mass spectrometry. Assays showed that the fumigant toxicity of A. khorassanica (LC50: 9.60 µl/liter air) was higher than V. pseudo-negundo (LC50: 23.05 µl/liter air). Moreover, the speed of mortality caused by A. khorassanica oil (LT50: 2.07 h) was higher than V. pseudo-negundo (LT50: 3.11 h). To assess the sublethal effects of the essential oils, adult moths were exposed to the LC30 of each essential oil, and life table parameters and energy contents of the surviving P. interpunctella were studied. Exposure to sublethal concentration of A. khorassanica negatively affected the life table of P. interpunctella, and also the protein, lipid, and glycogen contents of the larvae that came from treated adults. Vitex pseudo-negundo also affected lipid, protein, and glycogen contents of P. interpunctella The intrinsic rate of increase (rm), finite rate of increase ([Formula: see text]), and doubling time (DT) were not significantly different between control and V. pseudo-negundo treatment. According with these results, both tested essential oils, especially one extracted from A. khorassanica, have potential applications for the integrated management of P. interpunctella.
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lethal and sublethal effects of essential oils from artemisia khorassanica and vitex pseudo negundo against plodia interpunctella lepidoptera pyralidae
Environmental Entomology, 2016Co-Authors: Ehsan Borzoui, Bahram Naseri, Zahra Abedi, Mohammad Sadegh KarimipormehrAbstract:Plodia interpunctella (Hubner, 1813) is a polyphagous and key pest of different stored products worldwide. The lethal and sublethal effects of essential oils of Artemisia khorassanica Podl. and Vitex pseudo-negundo (Hausskn) were studied on P. interpunctella . The chemical constituents of the essential oils were also assessed using gas chromatography–mass spectrometry. Assays showed that the fumigant toxicity of A. khorassanica (LC50: 9.60 µl/liter air) was higher than V. pseudo-negundo (LC50: 23.05 µl/liter air). Moreover, the speed of mortality caused by A. khorassanica oil (LT50: 2.07 h) was higher than V. pseudo-negundo (LT50: 3.11 h). To assess the sublethal effects of the essential oils, adult moths were exposed to the LC30 of each essential oil, and life table parameters and energy contents of the surviving P. interpunctella were studied. Exposure to sublethal concentration of A. khorassanica negatively affected the life table of P. interpunctella , and also the protein, lipid, and glycogen contents of the larvae that came from treated adults. Vitex pseudo-negundo also affected lipid, protein, and glycogen contents of P. interpunctella . The intrinsic rate of increase ( rm ), finite rate of increase ( λ ), and doubling time ( DT ) were not significantly different between control and V. pseudo-negundo treatment. According with these results, both tested essential oils, especially one extracted from A. khorassanica , have potential applications for the integrated management of P. interpunctella .
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individual and combined effects of bacillus thuringiensis and azadirachtin on plodia interpunctella hubner lepidoptera pyralidae
Journal of Insect Science, 2016Co-Authors: Gadir Nouriganbalani, Ehsan Borzoui, Zahra Abedi, Arman Abdolmaleki, Shizuo G KamitaAbstract:: The Indianmeal moth, Plodia interpunctella Hubner (Lepidoptera: Pyralidae), is a major stored product pest that is found throughout the world. In this study, the effect of oral exposure to Bacillus thuringiensis (Berliner) subsp. kurstaki (Bacillales: Bacillaceae) and azadirachtin was evaluated in third instar P. interpunctella under laboratory conditions. The median lethal concentration (LC50) of Bt and azadirachtin on third instars was 490 and 241 μg a.i./ml, respectively. The median lethal time (LT50) of these insecticides was the same (4.5 d following exposure to 750 or 400 μg a.i./ml of Bt or azadirachtin, respectively). When the larvae fed on diet containing LC30 concentrations of both Bt and azadirachtin an additive interaction in terms of mortality was found. A synergistic interaction was found when the larvae fed on diet containing LC50 concentrations of both insecticides. Larvae that fed on insecticide-containing diet (either Bt or azadirachtin at an LC30 concentration, or both insecticides at LC30 or LC50 concentrations) showed lower glycogen and lipid levels, and generally lower protein content in comparison to control larvae. Larvae that fed on diet containing both Bt and azadirachtin showed reduced weight gain and nutritional indices in comparison to control larvae or larvae fed on the diet containing only one of the insecticides. Finally, exposure to both insecticides, either individually or in combination, reduced the level of digestive enzymes found in the midgut. Our findings indicate that both Bt and azadirachtin, either individually or in combination have significant potential for use in controlling of P. interpunctella.
Mohammad Sadegh Karimipormehr - One of the best experts on this subject based on the ideXlab platform.
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lethal and sublethal effects of essential oils from artemisia khorassanica and vitex pseudo negundo against plodia interpunctella lepidoptera pyralidae
Environmental Entomology, 2016Co-Authors: Ehsan Borzoui, Bahram Naseri, Zahra Abedi, Mohammad Sadegh KarimipormehrAbstract:Plodia interpunctella (Hubner, 1813) is a polyphagous and key pest of different stored products worldwide. The lethal and sublethal effects of essential oils of Artemisia khorassanica Podl. and Vitex pseudo-negundo (Hausskn) were studied on P. interpunctella The chemical constituents of the essential oils were also assessed using gas chromatography-mass spectrometry. Assays showed that the fumigant toxicity of A. khorassanica (LC50: 9.60 µl/liter air) was higher than V. pseudo-negundo (LC50: 23.05 µl/liter air). Moreover, the speed of mortality caused by A. khorassanica oil (LT50: 2.07 h) was higher than V. pseudo-negundo (LT50: 3.11 h). To assess the sublethal effects of the essential oils, adult moths were exposed to the LC30 of each essential oil, and life table parameters and energy contents of the surviving P. interpunctella were studied. Exposure to sublethal concentration of A. khorassanica negatively affected the life table of P. interpunctella, and also the protein, lipid, and glycogen contents of the larvae that came from treated adults. Vitex pseudo-negundo also affected lipid, protein, and glycogen contents of P. interpunctella The intrinsic rate of increase (rm), finite rate of increase ([Formula: see text]), and doubling time (DT) were not significantly different between control and V. pseudo-negundo treatment. According with these results, both tested essential oils, especially one extracted from A. khorassanica, have potential applications for the integrated management of P. interpunctella.
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lethal and sublethal effects of essential oils from artemisia khorassanica and vitex pseudo negundo against plodia interpunctella lepidoptera pyralidae
Environmental Entomology, 2016Co-Authors: Ehsan Borzoui, Bahram Naseri, Zahra Abedi, Mohammad Sadegh KarimipormehrAbstract:Plodia interpunctella (Hubner, 1813) is a polyphagous and key pest of different stored products worldwide. The lethal and sublethal effects of essential oils of Artemisia khorassanica Podl. and Vitex pseudo-negundo (Hausskn) were studied on P. interpunctella . The chemical constituents of the essential oils were also assessed using gas chromatography–mass spectrometry. Assays showed that the fumigant toxicity of A. khorassanica (LC50: 9.60 µl/liter air) was higher than V. pseudo-negundo (LC50: 23.05 µl/liter air). Moreover, the speed of mortality caused by A. khorassanica oil (LT50: 2.07 h) was higher than V. pseudo-negundo (LT50: 3.11 h). To assess the sublethal effects of the essential oils, adult moths were exposed to the LC30 of each essential oil, and life table parameters and energy contents of the surviving P. interpunctella were studied. Exposure to sublethal concentration of A. khorassanica negatively affected the life table of P. interpunctella , and also the protein, lipid, and glycogen contents of the larvae that came from treated adults. Vitex pseudo-negundo also affected lipid, protein, and glycogen contents of P. interpunctella . The intrinsic rate of increase ( rm ), finite rate of increase ( λ ), and doubling time ( DT ) were not significantly different between control and V. pseudo-negundo treatment. According with these results, both tested essential oils, especially one extracted from A. khorassanica , have potential applications for the integrated management of P. interpunctella .
Osmar Malaspina - One of the best experts on this subject based on the ideXlab platform.
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side effects of thiamethoxam on the brain and midgut of the africanized honeybee apis mellifera hymenopptera apidae
Environmental Toxicology, 2014Co-Authors: Regiane Alves De Oliveira, Thaisa Cristina Roat, Stephan Malfitano Carvalho, Osmar MalaspinaAbstract:The development of agricultural activities coincides with the increased use of pesticides to control pests, which can also be harmful to nontarget insects such as bees. Thus, the goal of this work was assess the toxic effects of thiamethoxam on newly emerged worker bees of Apis mellifera (africanized honeybee—AHB). Initially, we determined that the lethal concentration 50 (LC50) of thiamethoxam was 4.28 ng a.i./lL of diet. To determine the lethal time 50 (LT50), a survival assay was conducted using diets containing sublethal doses of thiamethoxam equal to 1/10 and 1/100 of the LC50. The group of bees exposed to 1/10 of the LC50 had a 41.2% reduction of lifespan. When AHB samples were analyzed by morphological technique we found the presence of condensed cells in the mushroom bodies and optical lobes in exposed honeybees. Through Xylidine Ponceau technique, we found cells which stained more intensely in groups exposed to thiamethoxam. The digestive and regenerative cells of the midgut from exposed bees also showed morphological and histochemical alterations, like cytoplasm vacuolization, increased apocrine secretion and increased cell elimination. Thus, intoxication with a sublethal doses of thiamethoxam can cause impairment in the brain and midgut of AHB and contribute to the honeybee life-
Zahra Abedi - One of the best experts on this subject based on the ideXlab platform.
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lethal and sublethal effects of essential oils from artemisia khorassanica and vitex pseudo negundo against plodia interpunctella lepidoptera pyralidae
Environmental Entomology, 2016Co-Authors: Ehsan Borzoui, Bahram Naseri, Zahra Abedi, Mohammad Sadegh KarimipormehrAbstract:Plodia interpunctella (Hubner, 1813) is a polyphagous and key pest of different stored products worldwide. The lethal and sublethal effects of essential oils of Artemisia khorassanica Podl. and Vitex pseudo-negundo (Hausskn) were studied on P. interpunctella The chemical constituents of the essential oils were also assessed using gas chromatography-mass spectrometry. Assays showed that the fumigant toxicity of A. khorassanica (LC50: 9.60 µl/liter air) was higher than V. pseudo-negundo (LC50: 23.05 µl/liter air). Moreover, the speed of mortality caused by A. khorassanica oil (LT50: 2.07 h) was higher than V. pseudo-negundo (LT50: 3.11 h). To assess the sublethal effects of the essential oils, adult moths were exposed to the LC30 of each essential oil, and life table parameters and energy contents of the surviving P. interpunctella were studied. Exposure to sublethal concentration of A. khorassanica negatively affected the life table of P. interpunctella, and also the protein, lipid, and glycogen contents of the larvae that came from treated adults. Vitex pseudo-negundo also affected lipid, protein, and glycogen contents of P. interpunctella The intrinsic rate of increase (rm), finite rate of increase ([Formula: see text]), and doubling time (DT) were not significantly different between control and V. pseudo-negundo treatment. According with these results, both tested essential oils, especially one extracted from A. khorassanica, have potential applications for the integrated management of P. interpunctella.
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lethal and sublethal effects of essential oils from artemisia khorassanica and vitex pseudo negundo against plodia interpunctella lepidoptera pyralidae
Environmental Entomology, 2016Co-Authors: Ehsan Borzoui, Bahram Naseri, Zahra Abedi, Mohammad Sadegh KarimipormehrAbstract:Plodia interpunctella (Hubner, 1813) is a polyphagous and key pest of different stored products worldwide. The lethal and sublethal effects of essential oils of Artemisia khorassanica Podl. and Vitex pseudo-negundo (Hausskn) were studied on P. interpunctella . The chemical constituents of the essential oils were also assessed using gas chromatography–mass spectrometry. Assays showed that the fumigant toxicity of A. khorassanica (LC50: 9.60 µl/liter air) was higher than V. pseudo-negundo (LC50: 23.05 µl/liter air). Moreover, the speed of mortality caused by A. khorassanica oil (LT50: 2.07 h) was higher than V. pseudo-negundo (LT50: 3.11 h). To assess the sublethal effects of the essential oils, adult moths were exposed to the LC30 of each essential oil, and life table parameters and energy contents of the surviving P. interpunctella were studied. Exposure to sublethal concentration of A. khorassanica negatively affected the life table of P. interpunctella , and also the protein, lipid, and glycogen contents of the larvae that came from treated adults. Vitex pseudo-negundo also affected lipid, protein, and glycogen contents of P. interpunctella . The intrinsic rate of increase ( rm ), finite rate of increase ( λ ), and doubling time ( DT ) were not significantly different between control and V. pseudo-negundo treatment. According with these results, both tested essential oils, especially one extracted from A. khorassanica , have potential applications for the integrated management of P. interpunctella .
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individual and combined effects of bacillus thuringiensis and azadirachtin on plodia interpunctella hubner lepidoptera pyralidae
Journal of Insect Science, 2016Co-Authors: Gadir Nouriganbalani, Ehsan Borzoui, Zahra Abedi, Arman Abdolmaleki, Shizuo G KamitaAbstract:: The Indianmeal moth, Plodia interpunctella Hubner (Lepidoptera: Pyralidae), is a major stored product pest that is found throughout the world. In this study, the effect of oral exposure to Bacillus thuringiensis (Berliner) subsp. kurstaki (Bacillales: Bacillaceae) and azadirachtin was evaluated in third instar P. interpunctella under laboratory conditions. The median lethal concentration (LC50) of Bt and azadirachtin on third instars was 490 and 241 μg a.i./ml, respectively. The median lethal time (LT50) of these insecticides was the same (4.5 d following exposure to 750 or 400 μg a.i./ml of Bt or azadirachtin, respectively). When the larvae fed on diet containing LC30 concentrations of both Bt and azadirachtin an additive interaction in terms of mortality was found. A synergistic interaction was found when the larvae fed on diet containing LC50 concentrations of both insecticides. Larvae that fed on insecticide-containing diet (either Bt or azadirachtin at an LC30 concentration, or both insecticides at LC30 or LC50 concentrations) showed lower glycogen and lipid levels, and generally lower protein content in comparison to control larvae. Larvae that fed on diet containing both Bt and azadirachtin showed reduced weight gain and nutritional indices in comparison to control larvae or larvae fed on the diet containing only one of the insecticides. Finally, exposure to both insecticides, either individually or in combination, reduced the level of digestive enzymes found in the midgut. Our findings indicate that both Bt and azadirachtin, either individually or in combination have significant potential for use in controlling of P. interpunctella.
Le Zhou - One of the best experts on this subject based on the ideXlab platform.
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ethyl cinnamate derivatives as promising high efficient acaricides against psoroptes cuniculi synthesis bioactivity and structure activity relationship
Chemical & Pharmaceutical Bulletin, 2015Co-Authors: Bingyu Zhang, Chao Lv, Weibo Li, Fang Miao, Dongdong Chen, Le ZhouAbstract:: This paper reported the synthesis, structure-activity relationship (SAR) and acaricidal activity in vitro against Psoroptes cuniculi, a mange mite, of 25 ethyl cinnamate derivatives. All target compounds were synthesized and elucidated by means of MS, (1)H- and (13)C-NMR analysis. The results showed that 24 out of 25 tested compounds at 1.0 mg/mL demonstrated acaricidal activity in varying degrees. Among them, 6, 15, 26, 27 and 30 showed significant activity with median lethal concentration values (LC50) of 89.3, 119.0, 39.2, 29.8 and 41.2 µg/mL, respectively, which were 2.1- to 8.3-fold the activity of ivermectin (LC50=247.4 µg/mL), a standard drug in the treatment of Psoroptes cuniculi. Compared with ivermectin, with a median lethal time value (LT50) of 8.9 h, 27 and 30 showed smaller LT50 values of 7.9 and 1.3 h, respectively, whereas 6, 15 and 26 showed slightly larger LT50 values of 10.6, 11.0 and 10.4 h at 4.5 µmol/mL. SARs showed that the presence of o-NO2 or m-NO2 on the benzene ring significantly improved the activity, whereas the introduction of a hydroxy, methoxy, acetoxy, methylenedioxy, bromo or chloro group reduced the activity. (E)-Cinnamates were more effective than their (Z)-isomer. Nevertheless, the carbon-carbon double bond in the acrylic ester moiety was proven not to be essential to improve the activity of cinnamic acid esters. Thus, the results strongly indicate that cinnamate derivatives, especially their dihydro derivatives, should be promising candidates or lead compounds for the development of novel acaricides for the effective control of animal or human acariasis.
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Ethyl Cinnamate Derivatives as Promising High-Efficient Acaricides against Psoroptes cuniculi: Synthesis, Bioactivity and Structure–Activity Relationship
Chemical & Pharmaceutical Bulletin, 2015Co-Authors: Bingyu Zhang, Chao Lv, Weibo Li, Fang Miao, Dongdong Chen, Le ZhouAbstract:: This paper reported the synthesis, structure-activity relationship (SAR) and acaricidal activity in vitro against Psoroptes cuniculi, a mange mite, of 25 ethyl cinnamate derivatives. All target compounds were synthesized and elucidated by means of MS, (1)H- and (13)C-NMR analysis. The results showed that 24 out of 25 tested compounds at 1.0 mg/mL demonstrated acaricidal activity in varying degrees. Among them, 6, 15, 26, 27 and 30 showed significant activity with median lethal concentration values (LC50) of 89.3, 119.0, 39.2, 29.8 and 41.2 µg/mL, respectively, which were 2.1- to 8.3-fold the activity of ivermectin (LC50=247.4 µg/mL), a standard drug in the treatment of Psoroptes cuniculi. Compared with ivermectin, with a median lethal time value (LT50) of 8.9 h, 27 and 30 showed smaller LT50 values of 7.9 and 1.3 h, respectively, whereas 6, 15 and 26 showed slightly larger LT50 values of 10.6, 11.0 and 10.4 h at 4.5 µmol/mL. SARs showed that the presence of o-NO2 or m-NO2 on the benzene ring significantly improved the activity, whereas the introduction of a hydroxy, methoxy, acetoxy, methylenedioxy, bromo or chloro group reduced the activity. (E)-Cinnamates were more effective than their (Z)-isomer. Nevertheless, the carbon-carbon double bond in the acrylic ester moiety was proven not to be essential to improve the activity of cinnamic acid esters. Thus, the results strongly indicate that cinnamate derivatives, especially their dihydro derivatives, should be promising candidates or lead compounds for the development of novel acaricides for the effective control of animal or human acariasis.
