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  • 1990-1994  (5)
  • Schistocerca americana  (3)
  • Acrididae  (1)
  • Brachystola magna  (1)
  • Deterrence  (1)
Source
Material
Years
Year
Keywords
  • 1
    Electronic Resource
    Electronic Resource
    Relationship between deterrence and toxicity of plant secondary compounds for the alfalfa weevil Hypera brunneipennis (1992)
    Springer
    Entomologia experimentalis et applicata 64 (1992), S. 289-292 
    Details
    ISSN: 1570-7458
    Keywords: Deterrence ; oral dosing ; toxicity ; diet breadth ; Hypera brunneipennis
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract A variety of plant secondary compounds, several of which are quite widespread in nature were tested for their deterrence to the specialist coleopteran Hypera brunneipennis (Boheman) in short-term behavioral assays. The compounds were nicotine, quinine, sparteine, hordenine, linamarin, amygdalin, sinigrin, morin, juglone, chlorogenic acid, digitonin, mimosine, diosgenin, rutin and ursolic acid. Nine of these were then tested for their post-ingestional effects over one to two weeks of adult life, using fecundity as a measure of the effects. In only one case was there any indication of a detrimental effect or any trend suggesting one. The evolutionary implications of these findings are discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00341092
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    Foraging patterns and dietary mixing in the field by the generalist grasshopperBrachystola magna (Orthoptera: Acrididae) (1994)
    Springer
    Journal of insect behavior 7 (1994), S. 779-793 
    Details
    ISSN: 1572-8889
    Keywords: diet mixing ; foraging ; generalist ; grasshopper ; plant-insect interaction ; omnivory ; Brachystola magna ; Taeniopoda eques
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract The foraging behavior of a cryptic romaleine grasshopper was observed in its natural habitat in southern Arizona. Individual polyphagy, dietary mixing, and the pattern of feeding on different substrates were monitored. Individuals were found to be extreme generalists with surprising levels of feeding on other insects. Differences in the foraging behavior between grasshopper species are discussed in relation to the habitat, the season, and the different defensive strategies.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01997126
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    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    Food mixing by generalist grasshoppers: Plant secondary compounds structure the pattern of feeding (1994)
    Springer
    Journal of insect behavior 8 (1994), S. 161-180 
    Details
    ISSN: 1572-8889
    Keywords: plant secondary compound ; Schistocerca americana ; diets ; food mixing ; feeding behavior ; feeding patterns
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Plant secondary compounds can prevent feeding by phytophagous insects or, if ingested, can be poisonous to them. Less attention has been paid to the additional effects they have on feeding behavior when they are only weakly deterrent or not deterrent at all. Experiments were carried out on the generalist grass-hopperSchistocerca americana. Individuals were presented either with two cakes of high-quality artificial food with a single deterrent compound added or with two cakes, each with a different added deterrent compound. The deterrents consisted of single plant secondary compounds that were either marginally or strongly deterrent. There were profound differences in feeding behavior between those individuals given identical and those given different cake types, including longer feeding bouts on single cakes when a choice of different cake types was available. The behavioral effects demonstrate that the presence of secondary compounds in one food can influence the patterns of feeding on other available foods and suggest that such chemicals could impact foraging activities in a complex manner.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01988902
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
  • 4
    Electronic Resource
    Electronic Resource
    Rutin: a phagostimulant for the polyphagous acridid Schistocerca americana (1991)
    Springer
    Entomologia experimentalis et applicata 60 (1991), S. 19-28 
    Details
    ISSN: 1570-7458
    Keywords: Schistocerca americana ; rutin ; grasshopper ; phagostimulant ; phenolic
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Rutin was demonstrated to be a phagostimulant for the grasshopper Schistocerca americana across a very wide concentration range. The effect was not maintained over a period of days if the insects had already ingested a large amount, but when individuals were given different concentrations on disks as supplements to their lettuce diet, they tended to self select a moderate quantity on a daily basis. In long term experiments on food utilization and growth rates using artificial diet, no beneficial effects of rutin could be demonstrated. Ingested rutin was absorbed and some of it deposited in the cuticle. Most was excreted as the aglycone quercetin. The possible functional significance of the phagostimulatory effect is discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00164955
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
  • 5
    Electronic Resource
    Electronic Resource
    Relationship between deterrence and toxicity of plant secondary compounds for the grasshopperSchistocerca americana (1991)
    Springer
    Journal of chemical ecology 17 (1991), S. 2519-2526 
    Details
    ISSN: 1573-1561
    Keywords: Schistocerca americana ; Orthoptera ; Acrididae ; deterrence ; toxicity ; plant defense ; diet breadth
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract A variety of plant secondary compounds, several of which are quite widespread in nature were tested for their deterrence to the generalist grasshopperSchistocerca americana in short-term behavioral assays. The compounds were coumarin, salicin, tannic acid, gramine, nicotine, quinine, carvone, geraniol, abietic acid, umbelliferone, and ursolic acid. These were then tested for their post-ingestional effects over the whole of the last larval instar. Different methods were employed to mask the taste of compounds that were deterrent in order to ensure that any effects were not due to reduced feeding. In no case was there any indication of a detrimental effect or any trend suggesting one. In two cases, there was a significant increase in growth rate with the addition of the secondary compound to the diet. The evolutionary implications of these findings are discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00994599
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    Paper (German National Licenses)
    Fulltext
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