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  • 1
    Electronic Resource
    Electronic Resource
    Fate of 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD) in a model aquatic environment (1978)
    Springer
    Archives of environmental contamination and toxicology 7 (1978), S. 349-357 
    Details
    ISSN: 1432-0703
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Medicine
    Notes: Abstract The fate of TCDD (2,3,7,8-tetrachlorodibenzo-p-dioxin) was studied by using aquatic sediment and lake water under laboratory conditions. Most of the TCDD was found in the sediment from which it slowly disappeared. Evaporation may be a major mode of disappearance of TCDD in samples incubated 39 days or more, with metabolism playing only a minor role. Under the experimental conditions the half-life of TCDD was in the order of 600 days. The metabolic activities were enhanced under conditions which stimulated microbial growth in the presence of sediment, and the metabolites were found to be released from the sediment to the ambient water.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02332062
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  • 2
    Electronic Resource
    Electronic Resource
    Metabolism of toxaphene components in rats (1979)
    Springer
    Archives of environmental contamination and toxicology 8 (1979), S. 1-24 
    Details
    ISSN: 1432-0703
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Medicine
    Notes: Abstract Metabolic fates of14C-toxaphene and two of the toxic components of toxaphene were studiedin vitro by using rat liver enzyme preparations. The enzyme systems involving toxaphene metabolism were characterized, using known cofactors and inhibitors to activate or inhibit individual enzyme reactions. The nature of toxaphene metabolites was studied through derivatization of metabolic products via chemical and enzymatic treatments. The results of thein vitro studies were compared to the metabolic patterns observedin vivo to ascertain the relative importance of each enzyme system in the total process of toxaphene degradation and excretion.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01055137
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  • 3
    Electronic Resource
    Electronic Resource
    Behavioral effects of perinatal exposure of chlordimeform in rats (1978)
    Springer
    Bulletin of environmental contamination and toxicology 20 (1978), S. 760-768 
    Details
    ISSN: 1432-0800
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01683597
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  • 4
    Electronic Resource
    Electronic Resource
    Metabolism of toxicant B and toxicant C of toxaphene in rats (1979)
    Springer
    Bulletin of environmental contamination and toxicology 21 (1979), S. 539-547 
    Details
    ISSN: 1432-0800
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01685467
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  • 5
    Electronic Resource
    Electronic Resource
    Metabolism of toxaphene by aquatic sediment and a camphor-degrading pseudomonad (1979)
    Springer
    Archives of environmental contamination and toxicology 8 (1979), S. 285-298 
    Details
    ISSN: 1432-0703
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Medicine
    Notes: Abstract The metabolism of14C- and36C1-labeled toxaphene (a complex insecticidal mixture of polychlorobornanes, C10H18−NClN, where N=6 to 10) has been studied under aerobic and anaerobic incubation conditions in aquatic sediments, enriched bacterial and washed cell cultures ofPseudomonas putida. An analysis of the production of water soluble metabolites as the major indicator of metabolism, showed that the aerobic route of toxaphene degradation was significant in all incubation conditions, and demonstrated that oxidative metabolism was important in the degradation of toxaphene. The absence of degradative activities in sediment which had been autoclaved prior to incubation and the appearance of metabolites formed during sediment incubation of pure toxicants A, B and C were taken as indicators of metabolism of toxaphene by microorganisms in sediment.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01056245
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  • 6
    Electronic Resource
    Electronic Resource
    Influence of carbon sources on the production of the termite trail-following substance byGloeophyllum trabeum (1976)
    Springer
    Journal of chemical ecology 2 (1976), S. 299-305 
    Details
    ISSN: 1573-1561
    Keywords: biosynthesis of trail-following substance ; Gloeophyllum trabeum ; southern subterranean termite ; influence of carbon sources
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract Efforts were made to study the effects of various carbon sources on the production of the trail-following substance (Z, Z, E)-3,6,8-dodecatrien-1-ol in the brown-rot fungusGloeophyllum trabeum (=Lenzites trabea). The substance is found in a southern subterranean termite,Reticulitermes virginicus, and is known to function as the trail-following pheromone. The fungus could not produce it when grown on a low potato-dextrose medium. On addition of several simple carbon sources, however, the fungus actively produced the substance. Ethylene glycol, glyceraldehyde, and xylose yielded the highest production of the substance. Using 1,2-14C-ethylene glycol as a tracer, we demonstrated that the given carbon source was incorporated into the trail-following substance by the fungus.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00988279
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  • 7
    Electronic Resource
    Electronic Resource
    Studies on the isolation and bioassay of the sex pheromone of the drugstore beetle,Stegobium paniceum (Coleoptera: Anobiidae) (1975)
    Springer
    Journal of chemical ecology 1 (1975), S. 413-422 
    Details
    ISSN: 1573-1561
    Keywords: Stegobium paniceum ; pheromone ; sex attractant ; drugstore beetle ; insect behavior ; stored-product insects
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract Females ofStegobium paniceum (L.) produce a sex pheromone that causes an excitation and attraction of the males. Male response was highest 5–12 days after adult emergence. Pheromone titer of unmated females increased steadily after 1 day, reached a plateau after 5 days, and continued until at least 14 days. Mature males showed a threshold responsiveness of 3 × 10−7 μg pheromone. The pheromone titer per female ranged from 50 to 200 ng. On the basis of a high-resolution mass spectrum the empirical formula of the pure isolated pheromone molecule was determined to be C13H20O3. The pheromone was further defined by its Chromatographic behavior and spectroscopic properties.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00988582
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  • 8
    Electronic Resource
    Electronic Resource
    Trail-following pheromones of the rhinotermitidae: Approaches to their authentication and specificity (1976)
    Springer
    Journal of chemical ecology 2 (1976), S. 147-166 
    Details
    ISSN: 1573-1561
    Keywords: subterranean termites ; chemical ecology ; insect behavior ; bioassay ; trail pheromone ; Reticulitermes virginicus ; Reticulitermes flavipes ; Reticulitermes tibilias ; Coptotermes formosanus
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract A method for determining the authenticity of subterranean termite trail pheromones is suggested and utilized to verify the presence of trail pheromones inReticulitermes virginicus, R. flavipes, andR. tibialis. In addition, a possible trail pheromone has been demonstrated forCoptotermes formosanus. A choice bioassay method shows that the above trail pheromones are species specific.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00987738
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  • 9
    Electronic Resource
    Electronic Resource
    Mechanism of feeding discrimination between matured and juvenile foliage by two species of pine sawflies (1977)
    Springer
    Journal of chemical ecology 3 (1977), S. 677-694 
    Details
    ISSN: 1573-1561
    Keywords: Feeding differentiation ; pine sawflies ; 13-keto-8(14)-podocarpen-18-oic acid ; dehydroabietic acid ; antifeedants ; jack pine ; adaptation of monophagous insects
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract Two species of pine sawflies,Neodiprion rugifrons Midd. andN. swainei Midd., feed only on matured foliage of jack pine,Pinus banksiana Lamb., and leave juvenile or current-season foliage intact. This unique form of adaptation was studied from the viewpoint of the chemical ecology of this insect-host plant relationship. It was first determined that the differential larval feeding behavior reflects the presence of feeding deterrents. Two major biologically active substances were isolated and identified as 13-keto-8(14)-podocarpen-18-oic acid and dehydroabietic acid. These account for 63.5% and 24.6% of the total deterrency, respectively. The content of the former substance in current-year foliage decreases, as the foliage begins to mature, to the levels that become acceptable toN. swainei by August (60 days old) and to the second generationN. rugifrons by September (90 days old). The timing of their acceptance of juvenile foliage indicates the high levels of adaptation by these insects to allow oviposition for the on-coming adults and acceptable needles for the next generation of larvae. The level of dehydroabietic acid, on the other hand, does not change appreciably during the same time period: this indicates that the component does not play a significant role in the mechanism of differentiating juvenile from matured foliage by the sawfly larvae.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00988067
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  • 10
    Electronic Resource
    Electronic Resource
    Isolation and identification of a major sex-attracting component ofAttagenus elongatulus (Casey) (Coleoptera: Dermestidae) (1977)
    Springer
    Journal of chemical ecology 3 (1977), S. 539-548 
    Details
    ISSN: 1573-1561
    Keywords: Coleoptera ; Dermestidae ; Attagenus elongatulus ; sex-attracting pheromone ; identification ; black carpet beetle ; (Z,Z)-3,5-tetradecadienoic acid ; (E,Z)-3,5-tetradecadienoic acid ; megatomoic acid
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract A major sex-attracting component in extracts of virgin females ofAttagenus elongatulus Casey was isolated by various chromatographic techniques. The chemical was identified as (Z,Z)-3,5-tetradecadienoic acid by spectroscopic analyses.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00989075
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