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        1 - Biological characteristies of the Plodia interpunctella (Lep.: Pyralidae) on dried fig at different temperatures in laboratory conditions
        Saeed Momenzadeh Shahram Hesami Mehdi Gheibi
        Indian meal moth Plodia interpunctella, (Lep.: Pyralidae)  is one of the main pests of  stored figs  in Iran. The effects of different temperatures (15, 20, 25, 30, 35° C) on the biological characteristics of this pest at laboratory conditions (16:8 L More
        Indian meal moth Plodia interpunctella, (Lep.: Pyralidae)  is one of the main pests of  stored figs  in Iran. The effects of different temperatures (15, 20, 25, 30, 35° C) on the biological characteristics of this pest at laboratory conditions (16:8 L:D , 60±5 % Rh) on dried fig were studied . Mean incubation period were estimated 14.44, 6.70, 3.27, 3.30, 4.26 days respectively. Total larval developmental time were determined 70.79, 42.60, 34.61, 32.2, 27.77 days and duration of pre-pupal and  pupal stages were estimated 9, 4.36, 1.44, 1.31, 1.23 and 15.92, 12.44, 7.29, 5.77, 3.34 respectively. Mean adult longevity were estimated 12.62, 12.38, 7.04, 7.65, 6.73 for female and 14, 12.37, 7, 7.03, 6.33 for parameters. Developmental rate were highest on 35° C. The result showed that high temperature promote rapid development of P. interpunctella on dried figs. Manuscript profile
      • Open Access Article

        2 - The first report of Caudacheles khayae (Acari: Cheyletidae) associated with elm bark beetles in Iran
        Reza Haghighi Hadi Ostovan Shahram Hesami
        During 2011-2012 , a faunistic study was conducted to collect and identify on mites associated with elm bark beetles in Fars Science and Research center  ( Fars province). One species of cheyletid mites , Caudacheles khayae Gerson (1968) , was collected from galler More
        During 2011-2012 , a faunistic study was conducted to collect and identify on mites associated with elm bark beetles in Fars Science and Research center  ( Fars province). One species of cheyletid mites , Caudacheles khayae Gerson (1968) , was collected from galleries of elm bark beetles. This is the first record of  Caudacheles khayae in Iran.   Manuscript profile
      • Open Access Article

        3 - Impact of overwintering refugia of Anagrus atomus (Hym.: Mymaridae) on egg parasitism of grape leafhopper Arboridia kermanshah (Hem.: Cicadellidae)
        Shahram Hesami Hosein Seyedoleslami Bijan Hatami
        Anagrus atomus (L.) (Hymenoptera: Mymaridae) is an egg parasitoid and an important mortality factor for the grape leafhopper, Arboridia kermanshah Dlabola (Hemiptera: Cicadellidae) populations in Isfahan vineyards. A study was conducted to characterize the plants in whi More
        Anagrus atomus (L.) (Hymenoptera: Mymaridae) is an egg parasitoid and an important mortality factor for the grape leafhopper, Arboridia kermanshah Dlabola (Hemiptera: Cicadellidae) populations in Isfahan vineyards. A study was conducted to characterize the plants in which A. atomus overwinters, dispersal of the parasitoid, and the level of parasitism of grape leafhopper eggs in two vineyards through 2000-2001. A. atomus overwinters in leafhopper eggs on rose, sweetbriar and blackberry. In a vineyard, with nearby overwintering refuges, the parasitoid emerged by mid-March from alternate hosts. It completed one generation on these alternate hosts, and then arrived in vineyard by late April, synchronized with grape leafhopper oviposition. The pattern of wasp colonization and parasitism indicated that parasitoids were more abundant in the vineyard with refuges close to it. In early spring, density of A. atomus was more than twice in this vineyard compared with vineyard with no refuges close to it. By mid season (July), A. atomus parasitism of A. kermanshah was significantly greater in the vineyard associated with refuges. Cumulative egg parasitism demonstrated that enhanced early season parasitism resulted in a better season-long increase in the mortality imposed by A. atomus on A. kermanshah eggs. Manuscript profile
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        4 - Effect of temperature on the development, female longevity and parasitism of Closterocerus formosus (Hym.: Eulophdiae), parasitoid of Liriomyza trifolii (Dip.: Agromyzidae)
        Shahram Hesami Hadi Ostovan Ebrahim Ebrahimi Mahmoud Shojai Karim Kamali
        The effects of five constant temperature (15, 20, 25, 30 & 35 oC) on the development (egg to adult emergence), longevity of female and parasitism of eulophid wasp Closterocerus formosus Westwood, on the serpentine leafminer, Liriomyza trifolii (Burges), was studied More
        The effects of five constant temperature (15, 20, 25, 30 & 35 oC) on the development (egg to adult emergence), longevity of female and parasitism of eulophid wasp Closterocerus formosus Westwood, on the serpentine leafminer, Liriomyza trifolii (Burges), was studied on bean. The developmental period was decreased as temperature increased and developmental duration from egg to adult emergence at constant experimental temperatures was 53.2, 27.6, 15.4, 9.6 and 7.2 days, respectively. Also the longevity of adult females decreased as temperature increased, and in the mentioned temperatures, female longevity determined as 27, 23.1, 22.4, 19.8 and 17.6 days. Accordingly, total numbers of host killed by the parasitoid (by parasitism and host killing) were 37.4, 197.8, 349.5, 324.4 and 296.5 at constant temperatures. The relationship between temperature and the developmental rate of the parasitoid well described by linear regression model. The lower threshold temperature was estimated to be 13.5 oC and degree-day requirement for egg-adult emergence was 166.66. Manuscript profile
      • Open Access Article

        5 - Evaluation of Resistance Mechanism of some navy bean genotypes to two-spotted spider mite (Tetranychus urticae)
        Mohammad Mojtaba Kamelmanesh Shahram Hesami Anita Namayandeh Banafsheh Ahmadi Hamid Reza Dorri
        In order to evaluate the resistance mechanism of Navy Bean (Phaseolus vulgaris L.) to two-spotted spider mite (Tetranychus urticae Koch), an experiment was conducted in greenhouse conditions during 2009-2010. Efficient mechanism of resistance including antibiosis, antix More
        In order to evaluate the resistance mechanism of Navy Bean (Phaseolus vulgaris L.) to two-spotted spider mite (Tetranychus urticae Koch), an experiment was conducted in greenhouse conditions during 2009-2010. Efficient mechanism of resistance including antibiosis, antixenosis and tolerance of 50 genotypes of navy bean was evaluated using standard greenhouse tests.  All experiments followed a complete randomized design (CRD) with 3 replications and 50 treatments (Genotypes).  Analysis of variance and mean values comparison using the Duncan procedure showed that there was a significant difference between three mechanisms of resistance in 50 genotypes at 5 % level.  The most response of antibiosis was seen in genotype numbers 41188, 41103, 41117, 41190, 41109, 41111, 41161, 41178, 41106, 41127, 41133 and 41151.  Genotype numbers 41188, 41121, 41158, 41113, 11867 and 41101 were the most resistant genotypes. 16 genotypes showed the most response of antixenosis. Appraising the Plant Resistance Index (PRI) by using the reverse product of values of resistance mechanisms and genotype numbers 41151 and 41134 showed the highest and lowest values, respectively. Our results show that genotype numbers 41151, 41121 and 41188 have the most potential of resistance to this pest with antibiosis and antixenosis as the principal mechanisms of resistance.  Manuscript profile
      • Open Access Article

        6 - Effects of Azadirachtin on reproductive parameters of aphid rose, Macrosiphum rosae (Hemiptera: Aphididae) in the laboratory conditions
        Abedeh Ansari Mehdi Gheibi Shahram Hesami
        Rose flowers are as a shrubs plants which have several pests including rose aphid, Macrosiphum rosae. Aphids control more dependent on the use of chemical insecticides. Due to the frequent use of pesticides, many species of aphids have become resistant to many chemicals More
        Rose flowers are as a shrubs plants which have several pests including rose aphid, Macrosiphum rosae. Aphids control more dependent on the use of chemical insecticides. Due to the frequent use of pesticides, many species of aphids have become resistant to many chemicals. So, the alternative method is needed to control aphids. In this study, in order to reduce pest damage and adverse effects of pesticides, the effects of Azadirachtin indicae on reproductive parameters of rose aphid were studied. Experiments were conducted in the laboratory condition, temperature 25 ± 1ºC, 60±5 % RH and photoperiod 16: 8 (L: D). After bioassay, the amount of LC10, LC25, LC50 and LC90 azadirachtin on rose aphid were calculated 0.5, 0.9, 1.62 and 4.94 ml/l, respectively. The data of fertility life table and reproductive parameters of rose aphid obtained on these concentrations. Maximum longevity of rose aphid was in the control and the minimums were in the 0.9 and 1.62 ml/l of the concentrations. Life expectancy in the first day of aphid, in control and 0.5, 0.9, 1.62 and 4.94 ml/l of azadirachtin concentrations was 9.85, 4.5, 3.22, 2.37 and 0. 95 days, respectively. The gross reproduction rate (GRR) of rose aphid in the control and 0.5, 0.9 and 1.62 ml/l of azadirachtin concentrations were 19.13, 8.73, 4.19 and 3.66 nymphs/female, respectively. The net reproductive rate (R0) with mortality of reproductive female, in the control and 0.5, 0.9 and 1.62 ml/l of azadirachtin concentrations was 12.95, 3.1, 1.3 and 1.02 nymphs, respectively. The intrinsic rate of natural increase (rm) in the control and 0.5, 0.9 and 1.62 ml/l of azadirachtin was 0.30, 0.18, 0.04, and 0.01 day-1, respectively. The results indicated a strong effect of azadirachtin on reproductive parameters of rese aphid.   Manuscript profile
      • Open Access Article

        7 - Contribution to the study of Eulophidae (Hymenoptera: Chalcidoidea) of Fars province of Iran: II- Subfamilies Entiinae and Eulophinae, with a preliminary checklist of Eulophidae species in Iran
        Shahram Hesami Ebrahim Ebrahimi Hadi Ostovan Zoya Yefremova
        The eulophid subfamilies Entiinae and Eulophinae collected in Fars province of Iran during 2004 to 2007 were studied. The subfamily Entiinae (=Euderinae) is recorded from Iran. One species of Entiinae and 13 species of Eulophinae are listed among them four species are r More
        The eulophid subfamilies Entiinae and Eulophinae collected in Fars province of Iran during 2004 to 2007 were studied. The subfamily Entiinae (=Euderinae) is recorded from Iran. One species of Entiinae and 13 species of Eulophinae are listed among them four species are recorded for the first time from Iran. Available biological data and geographical distribution of each species is mentioned briefly. A checklist of recorded species of Eulophidae from Iran  (until 2011)  is provided.   Manuscript profile
      • Open Access Article

        8 - Identification of Parasitoids and Seasonal Parasitism of Citrus leaf miner Phyllocnistis citrella (Lep.: Gracillaridae) in Shiraz
        Zahra Biparva Mostafa Haghani Hadi Ostovan Shahram Hesami
        Seasonal parasitism of Phyllocnistis citrella Stainton (Citrus leafminer) were investigated weekly during June 2010–September 2011 in two citrus orchards in Shiraz. In orchard 1 Parasitoids were collected from larvae and pupae stage of citrus leaf miner: Pediobius More
        Seasonal parasitism of Phyllocnistis citrella Stainton (Citrus leafminer) were investigated weekly during June 2010–September 2011 in two citrus orchards in Shiraz. In orchard 1 Parasitoids were collected from larvae and pupae stage of citrus leaf miner: Pediobius pyrgoWalker, Pediobius saulius Walker,Pnigalio soemius Walker. Moreover, Closteroceros formosa Westwood was observed in orchard 2. The most percentage parasitism was related to species P.soemius with 1.69% in orchard 1 and C. formosa with 26.32% in orchard 2. In orchards (1) and (2) the most percentage parasitism was in November 2010 with 2.88% and in January 2010 with 50.01% respectively. Manuscript profile