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Guangwen Liang - One of the best experts on this subject based on the ideXlab platform.
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Evaluation of plant protector BIOACT-T35 against striped flea beetle [ Phyllotreta striolata (F.)]
Fujian Journal of Agricultural Sciences, 2020Co-Authors: Xiongfei Pang, Guangwen LiangAbstract:Based on the idea of life table, the effect and the ecological controlling mechanism of plant protector BIOACT-T35 against striped flea beetle (SFB) [Phyllotreta striolata (F.)] were investigated in both laboratory and field. Results showed that the BIOACT-T35 strongly deterred the adult from laying eggs and significantly inhibited larval feeding on the plant with it. When 10.00 ml·L~(-1) of BIOACT-T35 was applied, 91.42% of the adults of SFB was kept away from the host plant, and selective and no-selective antifeedant rates of adults were 93.54% and 85.79% respectively. The index of population trend of SFB decrease from 3.8680 to 0.3676 in the control. The interference index of population control was 0.095.
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effects of environmental factors on Phyllotreta striolata dispersion
Journal of Applied Ecology, 2005Co-Authors: Weijian Wu, Guangwen LiangAbstract:Using marking recapture method,this paper studied the effects of host plants and climatic factors on the dispersion of Phyllotreta striolata adults.The results showed that the dispersion of the beetle was impelled by environment elements (τ≈1).Temperature and wind speed had significantly positive correlations with the dispersion of the beetle (P005),while high temperature had a negative correlation.Wind orientation had a significant effect on the dispersion of the beetle,with the adults mostly flying against or vertically to the wind.Humidity contributed little to the dispersion (P005).Host plant was one of the important factors affecting the dispersion of the beetle.Among the plants studied,flowering Chinese cabbage ranked first in capturing marked adults,followed by mustard and Chinese cabbage,while nearly no marked adults were captured on Chinese kale.
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evaluation of azadirachtin against striped flea beetle Phyllotreta striolata f
Journal of Applied Ecology, 2003Co-Authors: Xiongfei Pang, Guangwen LiangAbstract:: Based on the idea of life table, the concept and index of insect pests accumulated damage amount were described and the damage degree and its fluctuation were compared. Through analyzing the deterrent effect of azadirachtin on the adults of striped flea beetle (SFB), Phyllotreta striolata (F.), the results showed that the control mechanism was its strongly deterrent effect. When 0.5 ml.L-1 azadirachtin was applied, 83.75% of the SFB adults was kept away from the host plant. The population trend index (I-value) of SFB decreased from 3.8680 in the control to 0.3354. The interference index of population control (IIPC) was 0.0863 at this dosage. The results come from the fields, which avoided the space limit of laboratory experiment, were the main basis to evaluate the deterrent of allogenetic plant secondary substances to insect pests. Such index provided an objective method to assess the pest damage degree, and would play an important role in the dynamic researches of pest ecological control.
Mustafa Yaman - One of the best experts on this subject based on the ideXlab platform.
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Distribution of Nosema Phyllotretae (Microspora, Nosematidae) Weiser, 1961 in populations of Phyllotreta atra (Coleoptera, Chrysomelidae) in Turkey.
Acta parasitologica Turcica, 2020Co-Authors: Cicek Aydin, Mustafa Yaman, Onur TosunAbstract:: The distribution of Nosema Phyllotretae infection of Phyllotreta atra populations in Turkey is reported for the first time. In total, 48 of the 1668 beetles from 24 samples collected in five localities were infected by the parasite. Nosema infection was found in P. atra adults from only one of the five localities studied. The infection average was 2.8% and it reached 42.5% in some samples. The results showed that N. Phyllotretae infection occurs in P. atra populations in restricted localities within Turkey.
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unikaryon Phyllotretae sp n protista microspora a new microsporidian pathogen of Phyllotreta undulata coleoptera chrysomelidae
European Journal of Protistology, 2010Co-Authors: Mustafa Yaman, Renate Radek, Jaroslav Weiser, Bhen Sikina ToguebayeAbstract:Abstract The microsporidium Unikaryon Phyllotretae sp. n., a new pathogen of Phyllotreta undulata, is described based on light microscopic and ultrastructural characteristics. Microscopic examination of parasitized individuals revealed two types of spores. The majority of the spores were of the first type, which are oval and measured 2.74±0.17×1.93±0.17 μm when fresh. Fresh spores of the second type (very rare) are elongated and measured 4.39±0.18×1.61±0.20 μm. All life stages have single nuclei. Sporogony ends with uninucleate single sporoblasts and spores. The spores were only observed in Malpighian tubules. The isofilar polar filament of the parasite has six to eight coils, and a well-developed polaroplast was of the lamellated type, with closely packed anterior lamellae and loosely packed posterior lamellae.
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occurrence of the pathogens and parasites of Phyllotreta undulata coleoptera chrysomelidae in turkey
Turkish Journal of Zoology, 2009Co-Authors: Mustafa Yaman, Onur Tosun, Cicek AydinAbstract:The pathogens and parasites of Pyllotreta undulata Kutschera (Coleoptera: Chrysomelidae) collected from 5 localities in the Black Sea region of Turkey were investigated. Four different types of pathogens and parasites were recorded in adults of P. undulata: gregarine, microsporidium, and 2 nematodes, namely 1 Howardula species and 1 Hexamermis species. Gregarine and Howardula were the most common pathogen and parasite in P. undulata populations. There is the first record of a Hexamermis (Nematoda: Mermithidae) parasite from P. undulata in Turkey.
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characteristic features of nosema Phyllotretae weiser 1961 a microsporidian parasite of Phyllotreta atra coleoptera chrysomelidae in turkey
Zoological Studies, 2005Co-Authors: Mustafa Yaman, Renate Radek, Irfan Aslan, Omer ErturkAbstract:Characteristic features of Nosema Phyllotretae infecting Phyllotreta atra collected in Gumu hane, Turkey are given in this paper. Fixed and stained spores are oval, 4.08 ± 0.56 (range, 2.90~5.20) μm in length and 2.53 ± 0.33 (range, 1.80~2.90) μm in width (n = 50) with 14 coils of the polar filament. The spore wall is 110 to 175 nm thick and made up of a clear endospore (90 to 125 nm) and a uniform exospore (50 to 64 nm). The anterior region of the polaroplast is thinly lamellar. The ultrastructural features of Nosema Phyllotretae differ from those of other chrysomelid parasitic microsporidia.
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Phyllotreta nigripens coleoptera chrysomelidae a new host of nosema Phyllotretae microsporida in turkey
Journal of Pest Science, 2005Co-Authors: Mustafa Yaman, Irfan Aslan, Renate RadekAbstract:In the present study we describe a Nosema infection in a Phyllotreta nigripens population. The parasite was identified as Nosema Phyllotretae. The spores are oval, 3.97±0.47 μm (2.85–4.75) in length and 2.19±0.36 μm (1.90–2.85) in width. The polar filament has commonly 14 coils. The spore wall is 138–200 nm thick and made up of a clear endospore (88–140 nm) and a uniform exospore (40–70 nm). The polar filament measures 100–125 nm in diameter in the mature spirals. The polaroplast is thin lamellar. This study presents P. nigripens as a new host for N. Phyllotretae and a second infection locality in Turkey.
Frank A Momany - One of the best experts on this subject based on the ideXlab platform.
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male specific sesquiterpenes from Phyllotreta flea beetles
Journal of Natural Products, 2011Co-Authors: Robert J Bartelt, Bruce W Zilkowski, Allard A Cosse, Udo Schnupf, Karl E Vermillion, Frank A MomanyAbstract:Flea beetles in several genera are known to possess male-specific sesquiterpenes, at least some of which serve as aggregation pheromones that attract both sexes. In continuing research on the chemical ecology of Phyllotreta flea beetles, six new male-specific sesquiterpenes were identified, one from P. striolata (hydroxyketone 9) and five from P. pusilla (aldehydes 10−12 and 14 and alcohol 13); both species are crop pests. The minute amounts from beetles provided mass spectra and chromatographic data but were insufficient for complete structure determination. However, it was discovered that the new compounds could all be produced by applying organic reactions to previously identified flea beetle sesquiterpenes, and the resulting, larger amounts of material permitted definitive structure analysis by NMR. Molecular modeling was used in conjunction with NMR to define relative configurations of several newly created stereogenic centers. The absolute configurations of natural 9−14 were established by chiral ga...
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male specific sesquiterpenes from Phyllotreta and aphthona flea beetles
Journal of Chemical Ecology, 2001Co-Authors: Robert J Bartelt, Bruce W Zilkowski, Allard A Cosse, David Weisleder, Frank A MomanyAbstract:It was previously reported that males of the crucifer flea beetle, Phyllotreta cruciferae, feeding on host foliage are attractive to both males and females in the field. Based on this evidence for an aggregation pheromone, volatiles were collected from male and female P. cruciferae feeding on cabbage (Brassica oleracea) and analyzed. For comparison, volatiles were also collected from males and females of three other flea beetle species, Aphthona flava,A. czwalinae, and A. cyparissiae, all feeding on their host, leafy spurge foliage (Euphorbia esula). Six male-specific compounds were isolated from P. cruciferae, and the same compounds plus two additional ones were isolated from males of Aphthona flava,A. czwalinae, and A. cyparissiae. The blends of compounds were relatively consistent within species, but there were characteristic differences between species. Compound structures were studied by mass spectrometry, NMR spectroscopy, UV spectroscopy, polarimetry, chiral and achiral gas chromatography, molecular modeling, and microchemical tests. Three of the compounds were identified as (+)-ar-himachalene; (+)-trans-α-himachalene; (+)-γ-cadinene. Two others were new enantiomers of himachalene hydrocarbons that were previously identified from the fir trees, Abies alba and Abies nordmanniana. Finally, there were two himachalene alcohols and one norsesquiterpene ketone that is a himachalene analog. Only (+)-ar-himachalene and (+)-γ-cadinene are previously known natural products. Electrophysiological activity was demonstrated for five of the compounds. The chemical and electrophysiological patterns are consistent with, but do not prove, a pheromonal function.
Robert J Bartelt - One of the best experts on this subject based on the ideXlab platform.
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similarities in pheromonal communication of flea beetles Phyllotreta cruciferae goeze and ph vittula redtenbacher coleoptera chrysomelidae
Journal of Applied Entomology, 2012Co-Authors: Miklos Toth, Robert J Bartelt, Allard A Cosse, Eva Balintne Csonka, Bruce W ZilkowskiAbstract:Remarkable similarities have been found in the pheromonal communication of Phyllotreta vittula Redtenbacher and of Ph. cruciferae Goeze (European population) (Coleoptera, Chrysomelidae). In previously published European field tests with Ph. cruciferae, only the major male-produced sesquiterpene identified from North American Ph. cruciferae [compound A, (6R,7S)-2,2,6,10-tetramethylbicyclo[5.4.0]undeca-1(11),9-diene] was behaviourally active; unexpectedly, the European species Ph. vittula also responded in these tests and in the same way. In the present study, both the European population of Ph. cruciferae and Ph. vittula were shown to produce the same blend of compounds found in North American Ph. cruciferae and in similar proportions. Compound A is concluded to be a pheromone component for Ph. vittula as well as for Ph. cruciferae. In previously published tests with host compounds, Ph. vittula preferred 3-butenyl isothiocyanate to allyl isothiocyante whereas the reverse was true for Ph. cruciferae. It was also learned earlier that compound A enhanced the response of both species toward allyl isothiocyanate. The present study further explored interactions between compound A and the two isothiocyanates. Thus, the highest catches of Ph. vittula were recorded in traps with the combination of racemic compound A with 3-butenyl isothiocyanate, while highest Ph. cruciferae catches (and of Ph. nigripes Fabr.) were observed in traps with the combination of compound A with allyl isothiocyanate. Therefore, with the optimal combination of pheromonal and host-derived stimuli, more specific communication channels may exist for the different Phyllotreta spp. Both Ph. cruciferae and Ph. vittula rank among the most important pest flea beetles in Europe.
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male specific sesquiterpenes from Phyllotreta flea beetles
Journal of Natural Products, 2011Co-Authors: Robert J Bartelt, Bruce W Zilkowski, Allard A Cosse, Udo Schnupf, Karl E Vermillion, Frank A MomanyAbstract:Flea beetles in several genera are known to possess male-specific sesquiterpenes, at least some of which serve as aggregation pheromones that attract both sexes. In continuing research on the chemical ecology of Phyllotreta flea beetles, six new male-specific sesquiterpenes were identified, one from P. striolata (hydroxyketone 9) and five from P. pusilla (aldehydes 10−12 and 14 and alcohol 13); both species are crop pests. The minute amounts from beetles provided mass spectra and chromatographic data but were insufficient for complete structure determination. However, it was discovered that the new compounds could all be produced by applying organic reactions to previously identified flea beetle sesquiterpenes, and the resulting, larger amounts of material permitted definitive structure analysis by NMR. Molecular modeling was used in conjunction with NMR to define relative configurations of several newly created stereogenic centers. The absolute configurations of natural 9−14 were established by chiral ga...
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male specific sesquiterpenes from Phyllotreta and aphthona flea beetles
Journal of Chemical Ecology, 2001Co-Authors: Robert J Bartelt, Bruce W Zilkowski, Allard A Cosse, David Weisleder, Frank A MomanyAbstract:It was previously reported that males of the crucifer flea beetle, Phyllotreta cruciferae, feeding on host foliage are attractive to both males and females in the field. Based on this evidence for an aggregation pheromone, volatiles were collected from male and female P. cruciferae feeding on cabbage (Brassica oleracea) and analyzed. For comparison, volatiles were also collected from males and females of three other flea beetle species, Aphthona flava,A. czwalinae, and A. cyparissiae, all feeding on their host, leafy spurge foliage (Euphorbia esula). Six male-specific compounds were isolated from P. cruciferae, and the same compounds plus two additional ones were isolated from males of Aphthona flava,A. czwalinae, and A. cyparissiae. The blends of compounds were relatively consistent within species, but there were characteristic differences between species. Compound structures were studied by mass spectrometry, NMR spectroscopy, UV spectroscopy, polarimetry, chiral and achiral gas chromatography, molecular modeling, and microchemical tests. Three of the compounds were identified as (+)-ar-himachalene; (+)-trans-α-himachalene; (+)-γ-cadinene. Two others were new enantiomers of himachalene hydrocarbons that were previously identified from the fir trees, Abies alba and Abies nordmanniana. Finally, there were two himachalene alcohols and one norsesquiterpene ketone that is a himachalene analog. Only (+)-ar-himachalene and (+)-γ-cadinene are previously known natural products. Electrophysiological activity was demonstrated for five of the compounds. The chemical and electrophysiological patterns are consistent with, but do not prove, a pheromonal function.
Bruce W Zilkowski - One of the best experts on this subject based on the ideXlab platform.
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similarities in pheromonal communication of flea beetles Phyllotreta cruciferae goeze and ph vittula redtenbacher coleoptera chrysomelidae
Journal of Applied Entomology, 2012Co-Authors: Miklos Toth, Robert J Bartelt, Allard A Cosse, Eva Balintne Csonka, Bruce W ZilkowskiAbstract:Remarkable similarities have been found in the pheromonal communication of Phyllotreta vittula Redtenbacher and of Ph. cruciferae Goeze (European population) (Coleoptera, Chrysomelidae). In previously published European field tests with Ph. cruciferae, only the major male-produced sesquiterpene identified from North American Ph. cruciferae [compound A, (6R,7S)-2,2,6,10-tetramethylbicyclo[5.4.0]undeca-1(11),9-diene] was behaviourally active; unexpectedly, the European species Ph. vittula also responded in these tests and in the same way. In the present study, both the European population of Ph. cruciferae and Ph. vittula were shown to produce the same blend of compounds found in North American Ph. cruciferae and in similar proportions. Compound A is concluded to be a pheromone component for Ph. vittula as well as for Ph. cruciferae. In previously published tests with host compounds, Ph. vittula preferred 3-butenyl isothiocyanate to allyl isothiocyante whereas the reverse was true for Ph. cruciferae. It was also learned earlier that compound A enhanced the response of both species toward allyl isothiocyanate. The present study further explored interactions between compound A and the two isothiocyanates. Thus, the highest catches of Ph. vittula were recorded in traps with the combination of racemic compound A with 3-butenyl isothiocyanate, while highest Ph. cruciferae catches (and of Ph. nigripes Fabr.) were observed in traps with the combination of compound A with allyl isothiocyanate. Therefore, with the optimal combination of pheromonal and host-derived stimuli, more specific communication channels may exist for the different Phyllotreta spp. Both Ph. cruciferae and Ph. vittula rank among the most important pest flea beetles in Europe.
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male specific sesquiterpenes from Phyllotreta flea beetles
Journal of Natural Products, 2011Co-Authors: Robert J Bartelt, Bruce W Zilkowski, Allard A Cosse, Udo Schnupf, Karl E Vermillion, Frank A MomanyAbstract:Flea beetles in several genera are known to possess male-specific sesquiterpenes, at least some of which serve as aggregation pheromones that attract both sexes. In continuing research on the chemical ecology of Phyllotreta flea beetles, six new male-specific sesquiterpenes were identified, one from P. striolata (hydroxyketone 9) and five from P. pusilla (aldehydes 10−12 and 14 and alcohol 13); both species are crop pests. The minute amounts from beetles provided mass spectra and chromatographic data but were insufficient for complete structure determination. However, it was discovered that the new compounds could all be produced by applying organic reactions to previously identified flea beetle sesquiterpenes, and the resulting, larger amounts of material permitted definitive structure analysis by NMR. Molecular modeling was used in conjunction with NMR to define relative configurations of several newly created stereogenic centers. The absolute configurations of natural 9−14 were established by chiral ga...
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male specific sesquiterpenes from Phyllotreta and aphthona flea beetles
Journal of Chemical Ecology, 2001Co-Authors: Robert J Bartelt, Bruce W Zilkowski, Allard A Cosse, David Weisleder, Frank A MomanyAbstract:It was previously reported that males of the crucifer flea beetle, Phyllotreta cruciferae, feeding on host foliage are attractive to both males and females in the field. Based on this evidence for an aggregation pheromone, volatiles were collected from male and female P. cruciferae feeding on cabbage (Brassica oleracea) and analyzed. For comparison, volatiles were also collected from males and females of three other flea beetle species, Aphthona flava,A. czwalinae, and A. cyparissiae, all feeding on their host, leafy spurge foliage (Euphorbia esula). Six male-specific compounds were isolated from P. cruciferae, and the same compounds plus two additional ones were isolated from males of Aphthona flava,A. czwalinae, and A. cyparissiae. The blends of compounds were relatively consistent within species, but there were characteristic differences between species. Compound structures were studied by mass spectrometry, NMR spectroscopy, UV spectroscopy, polarimetry, chiral and achiral gas chromatography, molecular modeling, and microchemical tests. Three of the compounds were identified as (+)-ar-himachalene; (+)-trans-α-himachalene; (+)-γ-cadinene. Two others were new enantiomers of himachalene hydrocarbons that were previously identified from the fir trees, Abies alba and Abies nordmanniana. Finally, there were two himachalene alcohols and one norsesquiterpene ketone that is a himachalene analog. Only (+)-ar-himachalene and (+)-γ-cadinene are previously known natural products. Electrophysiological activity was demonstrated for five of the compounds. The chemical and electrophysiological patterns are consistent with, but do not prove, a pheromonal function.