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  • 2000-2004  (1)
  • 1975-1979  (3)
  • 1
    Electronic Resource
    Electronic Resource
    Grazing of protozoa and its effect on populations of aquatic bacteria (2001)
    Oxford, UK : Blackwell Publishing Ltd
    FEMS microbiology ecology 35 (2001), S. 0 
    Details
    ISSN: 1574-6941
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: Predation by bacterivorous protists in aquatic habitats can influence the morphological structure, taxonomic composition and physiological status of bacterial communities. The protistan grazing can result in bacterial responses at the community and the species level. At the community level, grazing-induced morphological shifts have been observed, which were directed towards either larger or smaller bacterial sizes or in both directions. Morphological changes have been accompanied by changes in taxonomic community structure and bacterial activity. Responses at the species level vary from species to species. Some taxa have shown a pronounced morphological plasticity and demonstrated complete or partial shifts in size distribution to larger growth forms (filaments, microcolonies). However, other taxa with weak plasticity have shown no ability to reduce grazing mortality through changes in size. The impact of protistan grazing on bacterial communities is based on the complex interplay of several parameters. These include grazing selectivity (by size and other features), differences in sensitivity of bacterial species to grazing, differences in responses of single bacterial populations to grazing (size and physiology), as well as the direct and indirect influence of grazing on bacterial growth conditions (substrate supply) and bacterial competition (elimination of competitors).
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1574-6941.2001.tb00794.x
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  • 2
    Electronic Resource
    Electronic Resource
    Dominance for large brains in laboratory mice: Reply to Henderson (1979)
    Springer
    Behavior genetics 9 (1979), S. 243-244 
    Details
    ISSN: 1573-3297
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Psychology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01071305
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Issues in the genetics of social behavior (1976)
    Springer
    Behavior genetics 6 (1976), S. 391-406 
    Details
    ISSN: 1573-3297
    Keywords: social behavior ; genetic analysis ; evolution ; developmental genetics
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Psychology
    Notes: Abstract The genetics of social behavior presents special difficulties because the phenotype is the product of an interaction between two or more individuals. Social interactions are of two kinds: (1) cooperative, in which the probabilities of transmission of the genes of all participants are similarly affected by the outcome, and (2) agonistic, in which the probabilities for the participants are affected in opposite directions. The latter are of particular interest for evolutionary theory. Three major types of designs for measuring social behavior in genetic experiments are available: (1) homogeneous sets, (2) standard tester and (3) tester panel representing a reference population. The advantages and limitations of each method are discussed. Important areas for future development include the relationship of genetic and experiential factors in early life to social status as an adult and the extension of the genetic analysis of social behavior to natural populations.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01065697
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    A diallel analysis of brain and body weight in male inbred laboratory mice (Mus musculus) (1978)
    Springer
    Behavior genetics 8 (1978), S. 251-260 
    Details
    ISSN: 1573-3297
    Keywords: brain weight ; body weight ; Darwinian fitness ; diallel cross
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Psychology
    Notes: Abstract The inheritance of brain and body weights was analyzed via the diallel cross. Results indicated some conjoint and some separate genetic influences on brain and body weight. The results are discussed with respect to Darwinian fitness.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01072827
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    Paper (German National Licenses)
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