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RISS 인기검색어
- 검색키워드
- 저자 : Masumeh Ziaee (검색결과 4 건)
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Masumeh Ziaee,Saied Moharramipour 한국응용곤충학회 2012 Journal of Asia-Pacific Entomology Vol.15 No.4
Laboratory bioassays were carried out to evaluate the insecticidal efficacy of two Iranian deposits of diatomaceous earths (DEs) and a commercial formulation, SilicoSec®, against adult confused flour beetle (Tribolium confusum Jacquelin du Val). The Iranian DEs were dried and sieved to get particle sizes of 0–149, 74–149,0–74 μm, and 0–37 μm. First, DE samples were applied at the four concentration levels of 500, 1000, 1500 and 2000 ppm and each concentration was replicated four times. Tests were carried out at 27±1 °C and 55±5%r.h. in continuous darkness. The beetle mortality was counted at 2, 7, and 14 days after exposure. Moreover, another experiment was conducted to estimate the LC50 values of the DEs. For the first experiment, adult beetle mortality exceeded 51% when exposed for 2 d to 2000 ppm of SilicoSec®. Complete mortality was recorded at each concentration of SilicoSec® at an exposure longer than 7 days except for 500 ppm; while mortalities of T. confusum at 2000 ppm of Maragheh and Mamaghan samples with the 0–149 μm particle sizewere 40.62% and 85.41%, respectively. Mortality of T. confusum was influenced by concentration and time of exposure to the DEs. SilicoSec® was the most effective DE followed by Mamaghan samples. The Maragheh samples were the least effective. In addition, in most cases fractions with smaller particles were more effective than larger ones. More experiments are necessary to process natural DEs and make them commercially exploitable.
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Masumeh Ziaee,Saeid Moharramipour,Jacek Francikowski 한국응용곤충학회 2014 Journal of Asia-Pacific Entomology Vol.17 No.4
In this study, synergistic/antagonistic interaction between Carum copticum (L.) powder and essential oil with diatomaceousearths (DEs) was assessed against Tribolium confusum Jacquelin du Val. and Sitophilus granarius (L.)adults. The obtained synergistic interactionwas interpreted by measurement of insects' locomotor activity whenexposed to C. copticum essential oil. Essential oil had strong fumigant toxicity against adult insects; however, toxicitydiminished in the presence of wheat commodity. Plant essential oil synergized the performance of DE samplessuch that they generally became more insecticidal than DE alone. However, plant powder effects wereantagonistic; effects were not as severe as predicted in terms of the insect mortality. Insects' locomotor activityincreased significantlywhen exposed to C. copticumessential oil. These results support the hypothesis that essentialoil can enhance the efficacy of DE, at least by increasing locomotor activity and insect-contact toxicity of DEparticles. Therefore, combination of essential oil with DE could have potential for use in integrated storedproductpest-management programs.
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Tabebordbar Fatemeh,Shishehbor Parviz,Ziaee Masumeh,Sohrabi Fariba 한국응용곤충학회 2020 Journal of Asia-Pacific Entomology Vol.23 No.4
The effects of three insecticides including deltamethrin, spirotetramat and flupyradifurone on pre-imaginal stages of Trichogramma evanescens Westwood (Hymenoptera: Trichogrammatidae) were investigated using dipping method. The mean emergence rate of T. evanescens when exposed to the recommended field concentrations of deltamethrin, spirotetramat and flupyradifurone were 62.8, 84 and 86.1%, respectively while 94.3% of the wasps emerged in the control group. According to the concentration–response experiments, the LC 50 values of deltamethrin, spirotetramat and flupyradifurone were 262.9, 274.8 and 334.8 ppm, respectively. The results indicated that lethal (LC 50 ) and sublethal (LC 30 ) concentrations of three tested insecticides significantly reduced the fecundity and longevity of T. evanescens. However, LC 30 of spirotetramat and flupyradifurone didn’t influence the oviposition duration of the wasps when compared with the control group. The gross reproductive rate (GRR), intrinsic rates of increases (r), net reproductive rate (R 0 ), and finite rate of increase (λ) were significantly lower in all the treated wasps in comparison with control. However, the mean generation time (T) was not affected by the sublethal concentrations of tested insecticides. According to our findings, all insecticidal treatments have adverse effects on the population of T. evanescens, notwithstanding sublethal concentration of flupyradifurone followed by spirotetramat were more compatible with adults T. evanescens in comparison with deltamethrin. However, further studies under the field conditions are required to confirm the results.
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Ali Almasi,Arash Rasekh,Mehdi Esfandiari,Majeed Askari Seyahooei,Masumeh Ziaee 한국응용곤충학회 2018 Journal of Asia-Pacific Entomology Vol.21 No.1
The broad-spectrum insecticides greatly influence the control of cotton aphids; however, due to frequent chemicalcontrol, Aphis gossypii (Hemiptera: Aphididae) has developed resistance against several classes of syntheticinsecticides. In this study, we explored the sub-lethal effects of imidacloprid and pirimicarb, two commonly usedinsecticides for aphid control, on a parasitoid wasp, Lysiphlebus fabarum (Marshall) (Braconidae: Aphidiinae),when simultaneously used to control melon aphid on cucumber plants, as part of a comprehensive study forintegrated pest management. Bioassays of imidacloprid and pirimicarb were performed to calculate LC50 withthird instars of A. gossypii. The LC50 of these insecticides (110.55 and 250.89 μg/lit, respectively) were used toexpose the wasp larvae, pupae, and adult parasitoids on a cucumber leaf. The percent mortality, percent adultemergence, and sex ratio were calculated during each exposure test. Moreover, the body size, egg load, andmature egg size of wasps surviving the insecticide treatments, as well as the sex ratio of the second generationwas evaluated. Regardless of the host aphid mortality, none of the insecticides caused mortality of larval stage ofthe parasitoid. The insecticide application on pupal stage revealed that the percentage of mortality, sex ratio,body size, and egg load of surviving wasps, as well as the sex ratio of their offspring was adversely affected byimidacloprid, but not by pirimicarb. The present study suggests pirimicarb as a preferred insecticide, with lessharmful effects on the fitness components of L. fabarum, for integrated pest management of cotton aphids.
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