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  • Articles  (2)
  • 3-ethyl-2,5-dimethylpyrazine  (1)
  • RNA
  • Springer  (2)
  • 1975-1979  (2)
  • 1965-1969
  • Chemistry and Pharmacology  (2)
Collection
  • Articles  (2)
Source
Keywords
Publisher
Years
  • 1975-1979  (2)
  • 1965-1969
Year
Topic
  • Chemistry and Pharmacology  (2)
  • Biology  (2)
  • 1
    Electronic Resource
    Electronic Resource
    Variations in rat liver chromatin composition during growth and the heterotic response (1976)
    Springer
    Biochemical genetics 14 (1976), S. 281-292 
    Details
    ISSN: 1573-4927
    Keywords: rat liver ; chromatin ; growth ; heterosis ; RNA ; DNA ; protein
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract The manifestation of hybrid vigor with regard to the inheritance of body weight was established as a postweaning phenomenon in rats. Liver weight gain generally corresponded to body weight gain and also reflected hybrid vigor. The protein/DNA ratios of the chromatin from livers of inbred and heterotic hybrid male rats were found to increase with increasing age in growing rats. Hybrid chromatin had higher protein/DNA ratios throughout the age range studies. The difference between hybrids and inbreds were greatest in the early postweaning stages of growth and maturation. The RNA/DNA ratios of chromatin from livers of inbred and hybrid male rats were also found to exhibit trends within certain developmental periods.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00484767
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    The major component of the trail pheromone of the leaf-cutting ant,Atta sexdens rubropilosa forel (1979)
    Springer
    Journal of chemical ecology 5 (1979), S. 187-203 
    Details
    ISSN: 1573-1561
    Keywords: Trail pheromone ; 3-ethyl-2,5-dimethylpyrazine ; leaf-cutting ants ; Atta sexdens ; Atta cephalotes ; foraging ; bait pickup
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract The major component of the trail pheromone of the South American leaf-cutting ant,Atta sexdens rubropilosa Forel, is 3-ethyl-2,5-dimethylpyrazine (II). Methyl and ethyl phenylacetate and methyl 4-methylpyrrole-2-carboxylate (I), which is the major component of the trail pheromone ofA. texana (Buckley) andA. cephalotes (L.), were also identified and may be minor components. The pheromone is stored in the poison gland.Atta sexdens sexdens (L.) also responds strongly to the pyrazine, which in large amounts evokes a weak response fromA. texana, A. cephalotes, andAcromyrmex octospinosus (Reich). Foraging workers ofAtta sexdens rubropilosa did not preferentially pick up baits impregnated with the pyrazine. The pyrazine was puffed into the nests ofA. cephalotes, and a particular response called “milling” was noted.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00988234
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    Paper (German National Licenses)
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