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  • 1
    Electronic Resource
    Electronic Resource
    Relationship of queen number and worker size in polygyne colonies of the fire antSolenopsis invicta (1996)
    Springer
    Insectes sociaux 43 (1996), S. 303-307 
    Details
    ISSN: 1420-9098
    Keywords: Monogyny ; polygyny ; caste ; fire ants ; Solenopsis invicta
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary We examined the relationship between queen number and worker size in colonies of the fire antSolenopsis invicta. Worker size in monogyne colonies was significantly greater than in polygyne colonies; furthermore, polygyne colonies snowed a strong negative linear relationship between queen number and worker size. Higher queen pheromone level and/or decreased food availability accompanying an increase in queen number likely play important roles in producing the observed patterns.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01242931
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Location, catalytic activity, and subunit composition of NAD-reducing hydrogenases of some Alcaligenes strains and Rhodococcus opacus MR22 (1997)
    Springer
    Archives of microbiology 167 (1997), S. 172-176 
    Details
    ISSN: 1432-072X
    Keywords: Key words Soluble NAD-reducing hydrogenase ; Membrane-bound hydrogenase ; Diaphorase ; Rhodococcus opacus 1b ; Alcaligenes eutrophus H16
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Six new strains of Alcaligenes enriched for and isolated as nickel-resistant bacteria resemble Alcaligenes eutrophus H16 and contain both an NAD-reducing, tetrameric soluble hydrogenase and a membrane-bound hydrogenase. None of the soluble hydrogenases share with the Rhodococcus opacus MR11 enzyme tetramer the property of being cleaved easily into two dimeric moieties [a hydrogenase (βδ) and an NADH:acceptor oxidoreductase (αγ)], in the absence of nickel or at low ionic strength. The soluble hydrogenase of the newly isolated strain MR22 of R. opacus equalled that of strain MR11. The absence of a membrane-bound hydrogenase in Alcaligenes denitrificans strain 4a-2 and in Alcaligenes ruhlandii was confirmed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002030050431
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
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