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  • Articles  (9)
  • Articles: DFG German National Licenses  (9)
  • Latest Papers from Table of Contents or Articles in Press
  • Noctuidae  (9)
  • Springer  (9)
  • American Association for the Advancement of Science
  • American Chemical Society (ACS)
  • Molecular Diversity Preservation International
  • 2020-2024
  • 1985-1989
  • 1980-1984  (9)
  • 1970-1974
  • 1965-1969
  • 1935-1939
  • 1981  (9)
  • 1967
  • Chemistry and Pharmacology  (9)
  • Economics
  • Natural Sciences in General
  • Process Engineering, Biotechnology, Nutrition Technology
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  • Articles  (9)
Source
  • Articles: DFG German National Licenses  (9)
  • Latest Papers from Table of Contents or Articles in Press
Keywords
Publisher
  • Springer  (9)
  • American Association for the Advancement of Science
  • American Chemical Society (ACS)
  • Molecular Diversity Preservation International
Years
  • 2020-2024
  • 1985-1989
  • 1980-1984  (9)
  • 1970-1974
  • 1965-1969
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Year
Topic
  • Chemistry and Pharmacology  (9)
  • Economics
  • Natural Sciences in General
  • Process Engineering, Biotechnology, Nutrition Technology
  • Biology  (10)
  • 1
    Electronic Resource
    Electronic Resource
    Relative efficiency of sticky and cylindrical electrical grid traps in capturingSpodoptera exigua (1981)
    Springer
    Journal of chemical ecology 7 (1981), S. 733-740 
    Details
    ISSN: 1573-1561
    Keywords: Beet armyworm ; Spodoptera exigua ; Lepidoptera ; Noctuidae ; pheromone trap ; trap efficiency ; Pherocon 1C trap ; population monitoring
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract The relative efficiency of sticky traps and cylindrical electrical grid traps for capturing male beet armyworm moths,Spodoptera exigua (Hubner), was studied using night vision equipment. The sticky and grid traps captured 34 and 40%, respectively, of the insects which oriented to them. The grid trap's capacity was limited only by the size of the receptacle (3.8-liter bucket) at the base of the funnel. The maximum capacity of the sticky trap was ca. 110 insects, and the efficiency of this trap declined rapidly when captures exceeded 50% capacity. This decline was caused by the physical blockage of the sticky surface by the captured insects. There was no evidence to indicate that captured males had any repelling effect on other males subsequently attracted to the sticky trap.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00990305
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  • 2
    Electronic Resource
    Electronic Resource
    Kairomones and their use for management of entomophagous insects (1981)
    Springer
    Journal of chemical ecology 7 (1981), S. 909-917 
    Details
    ISSN: 1573-1561
    Keywords: Trichogramma pretiosum ; Hymenoptera ; Trichogrammatidae ; biological control ; kairomone ; Heliothis zea ; Lepidoptera ; Noctuidae ; host density
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract Trichogramma pretiosum Riley females exhibit success-motivated searching after oviposition. The stimulatory effect of contact with host eggs makes host-egg density an important factor in determining the appropriate strategy for behavioral manipulation, using kairomones, that simulate host seeking, in biological control programs. Host eggs can be used, in conjunction with kairomones or by themselves, to improve the performance of these important beneficial insects.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00987616
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  • 3
    Electronic Resource
    Electronic Resource
    A four-component pheromone blend for optimum attraction of redbacked cutworm males,Euxoa ochrogaster (Guenée) (1981)
    Springer
    Journal of chemical ecology 7 (1981), S. 615-625 
    Details
    ISSN: 1573-1561
    Keywords: Redbacked cutworm ; Euxoa ochrogaster ; Lepidoptera ; Noctuidae ; sex pheromone blend ; sex attractant ; parapheromone ; Z-5-decenyl acetate ; Z-5-undecenyl acetate ; Z-5-dodecenyl acetate ; Z-7-dodecenyl acetate ; Z-9-dodecenyl acetate
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract Four acetates,Z-5-decenyl acetate,Z-5-,Z-7-, andZ-9-dodecenyl acetates, in microgram ratios of 1∶200∶2∶1 or 1∶200∶6∶2 were excellent, specific sex pheromone blends for capturing male redbacked cutworm moths in cone traps. Blends in ratios of 1∶200∶2∶1 and 2∶200∶2∶1 at 1000 μg/ rubber septum dispenser remained highly effective for 6 weeks under field conditions. The essential minor components,Z-5-decenyl,Z-7-, andZ-9-dodecenyl acetates, became inhibitory at concentrations of about 10% in the blends, and this may be an important general phenomenon in lepidopteran pheromones. Blends involving a parapheromone,Z-5-undecenyl acetate, withZ-5-,Z-7-, andZ-9-dodecenyl acetate, in microgram ratios of 8∶200∶2∶1 or 20∶200∶6∶2 were also excellent specific attractants for this species. TheZ-8-dodecenyl acetate had no obvious effect on the attraction of the redbacked cutworm males.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00987709
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  • 4
    Electronic Resource
    Electronic Resource
    Sex pheromone of the tomato looper,Plusia chalcites (ESP) (1981)
    Springer
    Journal of chemical ecology 7 (1981), S. 1081-1088 
    Details
    ISSN: 1573-1561
    Keywords: Plusia chalcites ; Lepidoptera ; Noctuidae ; tomato looper ; sex pheromone identification ; glass WCOT capillary chromatography ; gas chromatography-mass spectrometry ; Z-7-dodencenyl acetate ; Z-9-tetra-decenyl acetate
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract Z-7-Dodecenyl acetate (A) andZ-9-tetradecenyl acetate (B), in a 5∶1 ratio, have been identified as sex pheromone components of femalePlusia chalcites. In addition, small amounts of dodecyl acetate, tetradecyl acetate, hexadecyl acetate, andZ-9-dodecenyl acetate have been found in the abdominal tip extracts. This is the first known Plusiinae species which utilizes a two-component primary sex pheromone system. The most effective lure found in field experiments was a mixture of 1 mg A and 0.2 mg B absorbed on rubber septa.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00987630
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  • 5
    Electronic Resource
    Electronic Resource
    Growth inhibitors in tomato (Lycopersicon) to tomato fruitworm (Heliothis zea) (1981)
    Springer
    Journal of chemical ecology 7 (1981), S. 753-758 
    Details
    ISSN: 1573-1561
    Keywords: Lycopersicon esculentum ; Lycopersicon hirsutum f. glabratum Heliothis zea ; Lepidoptera ; Noctuidae ; α-tomatine ; rutin ; chlorogenic acid ; caffeyl aldaric acid ; allelochemics ; tomato ; tomato fruitworm
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract Several compounds that retard the larval growth of the tomato fruitworm,Heliothis zea (Boddie) have been isolated and identified from tomato leaves,Lycopersicon esculentum Mill. The major allelochemics are α-tomatine (I), chlorogenic acid (II), rutin (III), and a new caffeyl derivative of an aldaric acid (IV). The isolation, analyses, and toxicity of these compounds toH. zea are presented.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00990307
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  • 6
    Electronic Resource
    Electronic Resource
    Biological amplification for increasing electroantennogram discrimination between two female sex pheromones ofSpodoptera littoralis (Lepidoptera: Noctuidae) (1981)
    Springer
    Journal of chemical ecology 7 (1981), S. 791-798 
    Details
    ISSN: 1573-1561
    Keywords: Spodoptera littoralis ; Lepidoptera ; Noctuidae ; electroantennogram ; biological amplification ; pheromones ; Boarmia selenaria ; Geometridae ; Matsucoccus josephi ; Homoptera ; Coccoidea
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract MaleSpodoptera littoralis stimulated by a mixture ofS. littoralis female sex pheromone with a positional isomer and by the pheromone alone, gave greatly amplified electroantennograms (EAGs) when the antennae were connected in series. The technique is described and examples are given of its use in screening extracts for EAG activity. Dose-response curves obtained with this technique are presented and discussed. Through biological amplification, EAG discrimination between the pheromones was increased.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00992378
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  • 7
    Electronic Resource
    Electronic Resource
    Alleviation of α-tomatine-induced toxicity to the parasitoid,Hyposoter exiguae, by phytosterols in the diet of the host,Heliothis zea (1981)
    Springer
    Journal of chemical ecology 7 (1981), S. 927-946 
    Details
    ISSN: 1573-1561
    Keywords: Host-plant resistance ; α-tomatine ; sterols ; sterol esters ; Lycopersicon esculentum ; Heliothis zea ; Lepidoptera ; Noctuidae ; parasitoids ; Hyposoter exiguae ; Hymenoptera ; Ichneumonidae ; secondary compounds
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract The solitary, endoparasitic ichneumonid,Hyposoter exiguae (Viereck) is a parasitoid of the tomato fruitworm,Heliothis zea (Boddie). However, the parasitoid is deleteriously affected by the tomato glycoalkaloid, α-tomatine, ingested from hosts (H. zea) fed on artificial diets or semipurified extracts of tomato plants that contained α-tomatine. α-Tomatine causes prolonged larval development; disruption or prevention of pupal eclosion; deformation of antennal, abdominal, and genital structures; and reduction in adult weight and longevity of the parasitoid. These toxic effects are exacerbated when the dietary dose of α-tomatine is increased from 12 μmol to 20 μmol/g dry wt of diet. However, the toxicity of α-tomatine is attenuated in parasitoids reared from hosts fed on artificial diets that contain equimolar or supramolar amounts of 3β-OH-sterols admixed with α-tomatine. Further, the toxicity of extracts from the foliage of different cultivars of tomatoes toH. exiguae is contingent upon the composite levels of α-tomatine and total phytosterol (free and esterified). Cultivars with a low total sterol-tomatine ratio are more toxic toH. exiguae. The possible mode of action of α-tomatine toxicity toH. exiguae by disruption of sterol metabolism is discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00987618
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  • 8
    Electronic Resource
    Electronic Resource
    Kairomones and their use for management of entomophagous insects (1981)
    Springer
    Journal of chemical ecology 7 (1981), S. 1057-1061 
    Details
    ISSN: 1573-1561
    Keywords: Heliothis zea ; Lepidoptera ; Noctuidae ; Microplitis croceipes ; Hymenoptera ; Braconidae parasitoids ; kairomones
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract In laboratory experiments conducted to compare the kairomonal activity forMicroplitis croceipes (Cresson) of frass fromHeliothis zea (Boddie) larvae fed on different host plants,M. croceipes females responded to extracts of frass from larvae reared on cotton or soybeans but not on corn. The lack of response to frass from larvae reared on corn was shown to be a result of a lack of some appropriate chemical(s) in the corn.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00987627
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  • 9
    Electronic Resource
    Electronic Resource
    Identification of a sex pheromone ofHeliothis subflexa (GN.) (Lepidoptera: Noctuidae) and field trapping studies using different blends of components (1981)
    Springer
    Journal of chemical ecology 7 (1981), S. 1011-1022 
    Details
    ISSN: 1573-1561
    Keywords: Sex pheromone ; Heliothis subflexa ; Lepidoptera ; Noctuidae ; reproductive behavior ; field trapping ; capillary chromatography
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract Eight compounds were isolated from the sex pheromone gland ofHeliothis subflexa (Gn.) and identified as hexadecanal, (Z)-9-hexadecenal, (Z)-11-hexadecenal, (Z)-7-hexadecen-1-ol acetate, (Z)-9-hexadecen-1-ol acetate, (Z)-11-hexadecen-1-ol acetate, (Z)-9-hexadecen-1-ol, and (Z)-11-hexadecen-1-ol. Although the whole blend was found to be an effective male attractant, the deletion of alcohols from the blend increased trap captures considerably. Further, although the binary mixture of (Z)-9-hexadecenal and (Z)-11-hexadecenal caught some maleH. subflexa, significant increases in captures were noted when the three acetate components were included in the blend.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00987623
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