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  • 1975-1979  (185)
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  • 1
    Monograph available for loan
    Monograph available for loan
    Wilmette : Applied Publishing Ltd.
    Call number: M 93.0018 ; M 93.0018
    Type of Medium: Monograph available for loan
    Pages: X, 287 S. : Ill.
    ISBN: 0915834030
    Uniform Title: Geochimiceskie methody poiskov ...
    Language: English
    Location: Upper compact magazine
    Location: Upper compact magazine
    Branch Library: GFZ Library
    Branch Library: GFZ Library
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Naturwissenschaften 66 (1979), S. 472-473 
    ISSN: 1432-1904
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology , Natural Sciences in General
    Type of Medium: Electronic Resource
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  • 3
    ISSN: 1432-1904
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology , Natural Sciences in General
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    Entomologia experimentalis et applicata 24 (1978), S. 505-517 
    ISSN: 1570-7458
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Description / Table of Contents: Zusammenfassung Die Nahrungspräferenz vorratsschädlicher Insektenarten für trockene Samen sowie pflanzliche und tierische Gewebe wurde unter Berücksichtigung der Fraßgewohnheiten, Zusammensetzung und Verwertung der Nahrung sowie Geruchs- und Geschmacksreize diskutiert. Aufgrund ihrer verschiedenartigen Fraßgewohnheiten, können die vorratsschädlichen Käferarten in folgende Hauptgruppen eingeteilt werden: (a) Arten, die im Larval- und Imaginalstadium trockene Nahrungsmittel ausschliëßlich pflanzlichter Herkunft aufnehmen (z.B.Sitophilus granarius); (b) Arten, die im Larvalstadium und/oder im Imaginalstadium trockene Nahrungsmittel pflanzlicher sowie tierischer Herkunft fressen (z.B.Oryzaephilus surinamensis, Cryptolestes ferrugineus, Tenebroides mauretanicus). Einige zu dieser Gruppe gehörende Arten nehmen im Imaginalstadium keine Nahrung auf (z.B.Trogoderma granarium); (c) Arten, die im Larvalstadium carnivor sind und im Imaginalstadium Nektar und Blütenstaub aufnehmen (z.B.Attagenus pellio); (d) Arten, die sowohl im Larvalstadium als auch im Imaginalstadium carnivor sind (z.B.Dermestes maculatus). Die meisten vorratsschädlichen Lepidopteren (ausgenommenHofmannophila pseudospretella) fressen im Larvalstadium gelagerte Samen sowie einige andere pflanzliche Gewebe, nehmen jedoch im Imaginalstadium nur Wasser auf. Ein Eignung gelagerter Nahrungsmittel für die fortlaufende Insektenentwicklung hängt weitgehend von dem Vorhandensein der benötigten Nährstoffe und Nahrungsstruktur sowie dem Fehlen von Nährstoff-Antagonisten ab; beschränkend wirken bspw. für die symbiontenlosen Arten ein oder mehrere fehlende Vitamine des B-Komplexes, für die carnivoren Arten die Abwesenheit von Cholesterol, 7-Dehydrocholesterol (C27-Sterole) oder Campesterol (C28-Sterol), für die Getreidefressenden Arten ungenügend nutzbare Kohlenhydrate, für bestimmte Samenkäferarten Mangel an Peptiden, die sämtliche essentiellen Aminosäuren enthalten, sowie ein ungeeigneter Wassergehalt. Vorratsschädliche Insektenarten werden von komplex zusammengesetzten Nahrungsdüften, z.B. dem Getreidearoma, angelockt; andererseits wird die Aggregation und Nahrungsaufnahme dieser Arten durch nichtflüchtige Nahrungsbestandteile, wie Salze, Zucker und Lipide, angeregt. Die kurzkettigen, gesättigten Fettsäuren von Valeriansäure (C5) aufwärts bis zu Caprinsäure (C10) bewirken Repellenz bei den Imagines und/oder Larven vonTribolium castaneum, Trogoderma granarium sowieDermestes maculatus. Einige gesättigte bzw. ungesättigte Fettsäuren mit einer Kettenlänge von 12 bis 18 Kohlenstoffatomen fördern die Aggregation bzw. Nahrungsaufnahme der Imagines und/oder Larven mancher Arten aus den Familien derCurculionidae, Cleridae, Dermestidae, Gelechiidae undPyralidae. Gemischtsäurige oder einheitliche Triglyceride bestehend aus Palmitinsäure, Ölsäure sowie Linolensäure fördern die Aggregation imaginalerSitophilus granarius, Tribolium castaneum undTribolium confusum sowie larvalerSitotroga cerealella. Einige Mono- und Disaccharide wirken phagostimulierend beiTribolium confusum undPlodia interpuctella (die an kohlenhydratreiche Nahrung angepasst sind) wogegen die Nahrungsaufnahme vonAnthrenus flavipes undAttagenus megatoma (die sich normalerweise an mit Schweiß und Urin kontaminierter Wolle ernähren) von einer Mischung aus K+ und Na+ stimuliert wird. Die Anpassungsmöglichkeit vorratsschädlicher Insektenarten an bisher unbekannte Riech- und Geschmacksstoffe sowie deren Rolle bei der Ausbildung neuer Fraßgewohnheiten wurde besprochen.
    Notes: Abstract The nutritional preferences of storage insects are evaluated from the viewpoint of feeding habits, composition and utilization of foodstuffs as well as the involvement of attractants and feeding stimulants. On the basis of their feeding habits, coleopterous species infesting stored produce may be divided into four major groups: (a) Species which in the larval and adult stage consume dried foodstuffs from plant sources (e.g., Sitophilus granarius), (b) Species which in the larval and/or adult stage consume dried foodstuffs of plant and animal origin (e.g., Oryzaephilus surinamensis, Cryptolestes ferrugineus, Tenebroides mauretanicus), (c) Species which feed on material of animal origin in the larval stage and feed on nectar and pollen as adults (e.g., Attagenus pellio), (d) Species feeding on material of animal origin as larvae and adults (e.g.,Dermestes maculatus). Most lepidopterous species (except forHofmannophila pseudospretella) feed only in the larval stage on stored seeds and other plant tissues. Adequacy of stored foodstuffs for insect propagation mainly depends on availability of the proper nutrients and conditions which vary with different groups of insects. Olfactory attraction of storage insects can be induced by a blend of food volatiles such as the aroma of wheat or other cereals, while aggregation and feeding may be stimulated by less volatile food components including salts, sugars and lipids. Several saturated or unsaturated fatty acids with a chain length of 12 to 18 carbon atoms induce aggregation and/or feeding in adults and/or larvae of some curculionid, clerid, dermestid, gelechiid and pyralid species. Certain triglycerides elicit aggregation in adultSitophilus granarius, Tribolium castaneum andTribolium confusum as well as in larvae ofSitotroga cerealella. Mono- and disaccharides are phagostimulatory forTribolium andPloida breeding in food with considerable sugar content, while the cations K and Na stimulate feeding of carpet beetle larvae which usually grow on contaminated wool. Conditioning to strange chemical stimuli is discussed as a possible factor involved in the diversification of the feeding habits of storage insects.
    Type of Medium: Electronic Resource
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  • 5
    ISSN: 1573-1561
    Keywords: Coleoptera ; Dermestidae ; Trogoderma granarium (Khapra beetle) ; T. variabile, T. glabrum, T inclusion ; (Z)- and (E)-14-methyl-8-hexadecenal ; aeration ; Porapak-Q ; sex attractant
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract A major sex pheromone component of each of fourTrogoderma species was isolated by aeration of the female beetles and absorption of the volatiles on Porapak-Q. (Z)-14-Methyl-8-hexadecenal was identified as the major component inT. inclusum andT. variabile, and (E)-14-methyl-8-hexadecenal was identified inT. glabrum. Both (Z)- and (E)-14-methyl-8-hexadecenal were found inT. granarium (Khapra beetle), in the ratio 92Z∶8E. In laboratory bioassays, male beetles exhibited arousal and mating responses to the aldehydes, and could discriminate between the geometric isomers. The daily production of the aldehyde was calculated for each species, and other active components were detected. These aeration-absorption studies contrast with earlier studies on macerated beetles, in which the aldehyde was not detected. The efficacy of the aeration-absorption system for collection of the sex pheromones is also described. The absorbent (Porapak-Q) efficiently collected the active pheromone; only minor amounts of activity were left in the other parts of the system.
    Type of Medium: Electronic Resource
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  • 6
    ISSN: 1573-1561
    Keywords: olfaction ; behavior ; electroantennograms ; sex pheromone components ; (Z)- and (E)-trogodermal ; fatty acid esters ; Trogoderma granarium (khapra beetle) ; Dermestidae ; Coleoptera
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract On the basis of the antennal receptor potentials and the extent of attraction and copulation induced in unmated male khapra beetles, (Z)- and (E)-14-methyl-8-hexadecenal were recognized as the most important components of the pheromone system of femaleTrogoderma granarium (Everts), and were named (Z)- and (E)-trogodermal. Air blown over 10−5 to 10−4 μg of (Z)-trogodermal produced receptor potentials equivalent to that elicited by one virgin femaleT.granarium, while ∼10−2 μg of (Z)-trogodermal was required to cause complete attraction and copulation of unmated males. (Z)-Trogodermal was about 10 times more active than (E)-trogodermal. (Z)-8-Hexadecenal was ∼10−2 times less effective than (Z)-trogodermal in causing attraction and 104 time less active in stimulating copulation. (Z)- and (E)-14-methyl-8-hexadecen-1-ol and methyl (Z)- and (E)-14-methyl-8-hexadecenoate displayed a relatively low activity for unmated male khapra beetles. Methyl and ethyl oleate, ethyl linoleate, ethyl palmitate, and ethyl stearate were less effective than (Z)-trogodermal by 6–8 orders of magnitude and are nonspecific attractants. The intensity of response to a particular compound was consistent when assessed by the essential components of mating behavior: receptor potentials, attraction, and copulation.
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  • 7
    ISSN: 1573-1561
    Keywords: Coleoptera ; Dermestidae ; Trogoderma granarium (khapra beetle) ; T. variabile ; T. glabrum ; T. inclusum ; pheromone ; (Z)- and (E)-14-methyl-8-hexadecenal ; interspecific response
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract Interspecific responses among severalTrogoderma species have been correlated with their pheromone components. The most important component emitted by four of the species is (Z)- or (E)-14-methyl-8-hexadecenal, which is not detectable in extracts of macerated beetles. The response to macerated beetles is probably due to the corresponding alcohol and ester. The recency of common origin of seven species is discussed.
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für die chemische Industrie 91 (1979), S. 843-844 
    ISSN: 0044-8249
    Keywords: Chemistry ; General Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Additional Material: 2 Tab.
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Angewandte Chemie International Edition in English 18 (1979), S. 796-797 
    ISSN: 0570-0833
    Keywords: Chemistry ; General Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Additional Material: 2 Tab.
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  • 10
    Publication Date: 1979-09-01
    Print ISSN: 0028-1042
    Electronic ISSN: 1432-1904
    Topics: Biology , Chemistry and Pharmacology , Natural Sciences in General
    Published by Springer
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