Name: Moosa SaberDate of Birth: August 26, 1970Place of Birth: Tabriz, IranWork Address: Department of Plant ProtectionFaculty of AgricultureUniversity of Tabriz, Tabriz, IRANTel: 98 41 33392039Fax: 98 41 33345332Email (Work): saber@tabrizu.ac.ir Email (Home): moosaber@gmail.comEducation1993: Bachelor of Science in Plant Protection, University of Tabriz, Tabriz,Iran 1996: M.Sc. Agricultural Entomology, University of Tabriz, Tabriz, Iran 2002: Ph.D. in Agricultural Entomology, Tarbiat Modarres University, Tehran Teaching interests:Pesticide and Environment (Post graduate)Insecticide Toxicology (Postgraduate) Pesticide Toxicology (undergraduate) Chemical Control Technology (undergraduate) Biological and Chemical control of weeds (undergraduate) Principles of Microbiology (undergraduate)
The effects of azadirachtin/Neemazal on adults, emergence, and life table parameters of Trichogra... more The effects of azadirachtin/Neemazal on adults, emergence, and life table parameters of Trichogramma cacoeciae Marchal were studied. The adults were exposed to fresh residues of the insecticide applied on glass plates. Based on the dose-response study, the LC50 value was 1330 ppm or 13.3 microg (AI)/ml. The effect of Neemazal on three developmental stages of the parasitoid was tested by dipping parasitized Sitotroga cerealella (Olivier) and Cydia pomonella (L.) eggs at the field-recommended concentration 3, 6, and 9 d after parasitization corresponding to larval, prepupal, and pupal stages. The emergence of adult parasitoids was adversely affected in both hosts, but the adverse effect was more in S. cerealella eggs compared with C. pomonella. The adult emergence was reduced by 73.3 and 33.76% in Sitotroga and Cydia eggs compared with controls, respectively. Longevity and progeny production of the emergent adults did not differ significantly from control. Neemazal affected stable population parameters (r(m), T, and DT) significantly. The intrinsic rate of increase for the control and Neemazal-exposed populations was 0.340 and 0.335 female offspring per female per day, respectively. Because some of postemergence life table parameters of adults were significantly reduced by the insecticide treatment, emergence rate of the parasitoid from treated eggs is not an adequate measure of ecological selectivity, and field studies are needed to determine the actual impact of neem on T. cacoeciae.
In this study, the adult wasps were exposed to fresh residuces of the insecticide. The LC50value... more In this study, the adult wasps were exposed to fresh residuces of the insecticide. The LC50value of pyridalil were 2451 ppmSublethal effects of pyridalil on life table, reproduction parameters and survivorship of H. hebetorwere studied. The survivorship was affected by the insecticide. Life expectancy and Mortality rate were not significantly affected but reproduction parameters of H. hebetorwas affected by the insecticide. Mortality of egg and larval stages was significantly affected by the insecticide, but the adult emergence rate was not significantly affected by the pyridalil. Results showed that pyridalil insecticide had less adverse effects on the parasitoid. Field studies aiming to assess efficacy of combined use of insecticide and H. hebetor is needed to obtain more applicable results.
Cotton bollworm, Helicoverpa armigera (Hubner) is one of the most destructive insect pests on man... more Cotton bollworm, Helicoverpa armigera (Hubner) is one of the most destructive insect pests on many crops in the world that has been found to develop resistance against conventional insecticides. Using insecticides with different modes of action may result in appropriate control of the pest and delay insecticide resistance development. In this study, lethal and sublethal effects of emamectin benzoate and cypermethrin insecticides were investigated on third instar larvae of H. armigera by residue contact methods at 26 ± 1 o C, 70 ± 5% RH and a photoperiod of 16:8h (L: D) under laboratory conditions. LC50 values, on larval stage of the pest, of emamectin benzoate and cypermethrin were 1.75 and 127.74 µg a.i./ml, respectively. According to the findings, the larvae that were exposed to the LC30 of emamectin benzoate and cypermethrin exhibited lower pupal weight and increased larval and pupal developmental times compared with control. The longevity and fecundity of adults were significantly affected by the insecticides. Emamectin benzoate and cypermethrin reduced fecundity by 53.1% and 50.5%, respectively compared to control. The LC30 values of emamectin benzoate and cypermethrin reduced egg hatching by 62.06% and 37.9%, respectively. It is predicted that these insecticides, especially emamectin benzoate, may induce significant lethal and sublethal effects on population parameters of H. armigera
Archives of Phytopathology and Plant Protection, Dec 1, 2013
ABSTRACT Chemical application is the common control technique of the pest Trialeurodes vaporarior... more ABSTRACT Chemical application is the common control technique of the pest Trialeurodes vaporariorum (Westwood) (Hom.: Aleyrodidae). Toxicity of two insecticides abamectin and imidacloprid in 2009 was evaluated on different life stages of the pest. Bioassay tests were carried out under controlled environmental conditions (25 ± 2 °C 50 ± 5% RH and a photoperiod of 18:6 L/D) on different stages of whitefly (1-,3- and 5-day-old ages of eggs, first, second and third nymphal instars, pupa and adult). Both insecticides showed their best efficacy on the primary stages; though, with increasing the age, the susceptibility of all stages to chemicals was decreased. It was shown that sensitivity of eggs and first nymphal stage to abamectin in each host was different. But in imidacloprid treatment, only the eggs showed different sensitivity on both host plants. It seems that application of abamectin in primary stages induce higher mortality rates than of imidacloprid.
Biocatalysis and agricultural biotechnology, Sep 1, 2019
Abstract Helicoverpa armigera (Hubner) (Lepidoptera: Noctuidae) is one of the most economically d... more Abstract Helicoverpa armigera (Hubner) (Lepidoptera: Noctuidae) is one of the most economically devastating pests of agricultural crops around the world. In this study, the effects of hexaflumuron, lufenuron and chlorfluazuron were evaluated on some biological and physiological parameters of H. armigera larvae. Effects of the insecticides were assessed by adding different concentrations into the larval artificial diet. Dose-response bioassay showed LC50 values of 6.16, 61.31 and 31.75 mg ai/l for hexaflumuron, lufenuron and chlorfluazuron, respectively. Subsequently, sublethal effects of hexaflumuron, lufenuron and chlorfluazuron were assessed using LC10 concentration to find their possible effects on the biological and physiological parameters of H. armigera larvae. The results showed significant changes in biological parameters, where the mean larval and pupal weights significantly decreased following treatment, while their developmental time significantly increased compared to the control. Meanwhile, the longevity of adult males and females, number of laid eggs per female, and rate of egg hatch were significantly reduced due to the insecticide treatments. The activities of alanine aminotransferase, aspartate aminotransferase, γ-glutamyl transferase, acid- and alkaline phosphatases, lactate dehydrogenase, glutathione S-transferase were increased following the treatments. Sublethal exposure of the insecticides on larvae led to lower amounts of glycogen, triglyceride and protein compared to the control.
Archives of Phytopathology and Plant Protection, Apr 1, 2013
ABSTRACT Exposing to sub-lethal and low lethal doses of pesticides may cause changes in natural e... more ABSTRACT Exposing to sub-lethal and low lethal doses of pesticides may cause changes in natural enemy behavioural, such as functional, response. In this study, the effects of chlorpyrifos, carbaryl, abamectin and spinosad were evaluated on the functional response of the Habrobracon hebetor to different densities of last instar larvae of Anagasta kuehniella Zeller. Young adult females of the parasitoid were exposed to LC30 of chlorpyrifos, carbaryl, abamectin and spinosad that were 0.32, 4.03, 3.05 and 17.51 mg a.i./l for 24 h, respectively. Host densities of 2, 4, 8, 16, 32 and 64 were offered to treated young females for 2 h in 10-cm Petri dishes and then the parasitism data were recorded. Experiments were conducted in eight replications. Functional response type was determined using logistic regression and the parameters were appraised by non-linear regression using statistical analysis software. Functional response was type Ш in control and insecticide treatments. Searching efficiency in control, chlorpyrifos-, carbaryl-, abamectin- and spinosad-treated wasps were 0.008 ± 0.002, 0.002 ± 0.0009, 0.0034 ± 0.0013, 0.0076 ± 0.002 and 0.0073 ± 0.002 h−1and handling times were 1.38 ± 0.1, 7.64 ± 1.01, 3.3 ± 0.315, 1.55 ± 0.1 and 1.46 ± 0.11 h, respectively. Chlorpyrifos and carbaryl had the highest effect on searching efficiency of H. hebetor. Spinosad and abamectin showed less adverse effect on the functional response parameters. Finally, after conducting the advanced field studies, spinosad and abamectin may be used as a compatible chemical material with biological control agent in integrated pest management programmes.
The effects of azadirachtin/Neemazal on adults, emergence, and life table parameters of Trichogra... more The effects of azadirachtin/Neemazal on adults, emergence, and life table parameters of Trichogramma cacoeciae Marchal were studied. The adults were exposed to fresh residues of the insecticide applied on glass plates. Based on the dose-response study, the LC50 value was 1330 ppm or 13.3 microg (AI)/ml. The effect of Neemazal on three developmental stages of the parasitoid was tested by dipping parasitized Sitotroga cerealella (Olivier) and Cydia pomonella (L.) eggs at the field-recommended concentration 3, 6, and 9 d after parasitization corresponding to larval, prepupal, and pupal stages. The emergence of adult parasitoids was adversely affected in both hosts, but the adverse effect was more in S. cerealella eggs compared with C. pomonella. The adult emergence was reduced by 73.3 and 33.76% in Sitotroga and Cydia eggs compared with controls, respectively. Longevity and progeny production of the emergent adults did not differ significantly from control. Neemazal affected stable population parameters (r(m), T, and DT) significantly. The intrinsic rate of increase for the control and Neemazal-exposed populations was 0.340 and 0.335 female offspring per female per day, respectively. Because some of postemergence life table parameters of adults were significantly reduced by the insecticide treatment, emergence rate of the parasitoid from treated eggs is not an adequate measure of ecological selectivity, and field studies are needed to determine the actual impact of neem on T. cacoeciae.
In this study, the adult wasps were exposed to fresh residuces of the insecticide. The LC50value... more In this study, the adult wasps were exposed to fresh residuces of the insecticide. The LC50value of pyridalil were 2451 ppmSublethal effects of pyridalil on life table, reproduction parameters and survivorship of H. hebetorwere studied. The survivorship was affected by the insecticide. Life expectancy and Mortality rate were not significantly affected but reproduction parameters of H. hebetorwas affected by the insecticide. Mortality of egg and larval stages was significantly affected by the insecticide, but the adult emergence rate was not significantly affected by the pyridalil. Results showed that pyridalil insecticide had less adverse effects on the parasitoid. Field studies aiming to assess efficacy of combined use of insecticide and H. hebetor is needed to obtain more applicable results.
Cotton bollworm, Helicoverpa armigera (Hubner) is one of the most destructive insect pests on man... more Cotton bollworm, Helicoverpa armigera (Hubner) is one of the most destructive insect pests on many crops in the world that has been found to develop resistance against conventional insecticides. Using insecticides with different modes of action may result in appropriate control of the pest and delay insecticide resistance development. In this study, lethal and sublethal effects of emamectin benzoate and cypermethrin insecticides were investigated on third instar larvae of H. armigera by residue contact methods at 26 ± 1 o C, 70 ± 5% RH and a photoperiod of 16:8h (L: D) under laboratory conditions. LC50 values, on larval stage of the pest, of emamectin benzoate and cypermethrin were 1.75 and 127.74 µg a.i./ml, respectively. According to the findings, the larvae that were exposed to the LC30 of emamectin benzoate and cypermethrin exhibited lower pupal weight and increased larval and pupal developmental times compared with control. The longevity and fecundity of adults were significantly affected by the insecticides. Emamectin benzoate and cypermethrin reduced fecundity by 53.1% and 50.5%, respectively compared to control. The LC30 values of emamectin benzoate and cypermethrin reduced egg hatching by 62.06% and 37.9%, respectively. It is predicted that these insecticides, especially emamectin benzoate, may induce significant lethal and sublethal effects on population parameters of H. armigera
Archives of Phytopathology and Plant Protection, Dec 1, 2013
ABSTRACT Chemical application is the common control technique of the pest Trialeurodes vaporarior... more ABSTRACT Chemical application is the common control technique of the pest Trialeurodes vaporariorum (Westwood) (Hom.: Aleyrodidae). Toxicity of two insecticides abamectin and imidacloprid in 2009 was evaluated on different life stages of the pest. Bioassay tests were carried out under controlled environmental conditions (25 ± 2 °C 50 ± 5% RH and a photoperiod of 18:6 L/D) on different stages of whitefly (1-,3- and 5-day-old ages of eggs, first, second and third nymphal instars, pupa and adult). Both insecticides showed their best efficacy on the primary stages; though, with increasing the age, the susceptibility of all stages to chemicals was decreased. It was shown that sensitivity of eggs and first nymphal stage to abamectin in each host was different. But in imidacloprid treatment, only the eggs showed different sensitivity on both host plants. It seems that application of abamectin in primary stages induce higher mortality rates than of imidacloprid.
Biocatalysis and agricultural biotechnology, Sep 1, 2019
Abstract Helicoverpa armigera (Hubner) (Lepidoptera: Noctuidae) is one of the most economically d... more Abstract Helicoverpa armigera (Hubner) (Lepidoptera: Noctuidae) is one of the most economically devastating pests of agricultural crops around the world. In this study, the effects of hexaflumuron, lufenuron and chlorfluazuron were evaluated on some biological and physiological parameters of H. armigera larvae. Effects of the insecticides were assessed by adding different concentrations into the larval artificial diet. Dose-response bioassay showed LC50 values of 6.16, 61.31 and 31.75 mg ai/l for hexaflumuron, lufenuron and chlorfluazuron, respectively. Subsequently, sublethal effects of hexaflumuron, lufenuron and chlorfluazuron were assessed using LC10 concentration to find their possible effects on the biological and physiological parameters of H. armigera larvae. The results showed significant changes in biological parameters, where the mean larval and pupal weights significantly decreased following treatment, while their developmental time significantly increased compared to the control. Meanwhile, the longevity of adult males and females, number of laid eggs per female, and rate of egg hatch were significantly reduced due to the insecticide treatments. The activities of alanine aminotransferase, aspartate aminotransferase, γ-glutamyl transferase, acid- and alkaline phosphatases, lactate dehydrogenase, glutathione S-transferase were increased following the treatments. Sublethal exposure of the insecticides on larvae led to lower amounts of glycogen, triglyceride and protein compared to the control.
Archives of Phytopathology and Plant Protection, Apr 1, 2013
ABSTRACT Exposing to sub-lethal and low lethal doses of pesticides may cause changes in natural e... more ABSTRACT Exposing to sub-lethal and low lethal doses of pesticides may cause changes in natural enemy behavioural, such as functional, response. In this study, the effects of chlorpyrifos, carbaryl, abamectin and spinosad were evaluated on the functional response of the Habrobracon hebetor to different densities of last instar larvae of Anagasta kuehniella Zeller. Young adult females of the parasitoid were exposed to LC30 of chlorpyrifos, carbaryl, abamectin and spinosad that were 0.32, 4.03, 3.05 and 17.51 mg a.i./l for 24 h, respectively. Host densities of 2, 4, 8, 16, 32 and 64 were offered to treated young females for 2 h in 10-cm Petri dishes and then the parasitism data were recorded. Experiments were conducted in eight replications. Functional response type was determined using logistic regression and the parameters were appraised by non-linear regression using statistical analysis software. Functional response was type Ш in control and insecticide treatments. Searching efficiency in control, chlorpyrifos-, carbaryl-, abamectin- and spinosad-treated wasps were 0.008 ± 0.002, 0.002 ± 0.0009, 0.0034 ± 0.0013, 0.0076 ± 0.002 and 0.0073 ± 0.002 h−1and handling times were 1.38 ± 0.1, 7.64 ± 1.01, 3.3 ± 0.315, 1.55 ± 0.1 and 1.46 ± 0.11 h, respectively. Chlorpyrifos and carbaryl had the highest effect on searching efficiency of H. hebetor. Spinosad and abamectin showed less adverse effect on the functional response parameters. Finally, after conducting the advanced field studies, spinosad and abamectin may be used as a compatible chemical material with biological control agent in integrated pest management programmes.
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