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  • 1990-1994  (3)
  • 1
    Digitale Medien
    Digitale Medien
    Springer
    Journal of insect behavior 8 (1994), S. 161-180 
    ISSN: 1572-8889
    Schlagwort(e): plant secondary compound ; Schistocerca americana ; diets ; food mixing ; feeding behavior ; feeding patterns
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie
    Notizen: 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.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 2
    Digitale Medien
    Digitale Medien
    Springer
    Pediatric surgery international 8 (1993), S. 496-499 
    ISSN: 1437-9813
    Schlagwort(e): Hypospadias ; Epipadias ; Urethral replacement ; Transplants
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Abstract We present two experimental models consisting of two groups of 16 dogs each in which we performed venous and arterial autotransplants in the urethra using the same surgical technique and the same sutures. As a substitute for the urethra, 4 to 5 cm of either superficial femoral artery or vein were used. Clinical, radiologic, and histologic evaluations were performed 15, 30, 90, and 180 days following the autotransplants. Total re-epithelialization of the venous graft, good micturitional flow, and suitable distension of the neourethra during micturition were observed. the arterial graft also underwent total re-epithelialization, but was very rigid, so that the caliber of the neourethra decreased over a period of several months, causing a number of complications after 6 months of follow-up. We compare this transplant technique with the generally used techniques for hypospadias repair such as the use of skin, bladder mucosa, tunica vaginalis, and ureter. The results were statistically analyzed.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 3
    facet.materialart.
    Unbekannt
    Chicago : Periodicals Archive Online (PAO)
    Chicago review. 39:3/4 (1993) 39 
    ISSN: 0009-3696
    Thema: Anglistik, Amerikanistik
    Notizen: NORTH AMERICA - SOUTHWEST COAST
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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