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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Journal of chemical ecology 16 (1990), S. 713-724 
    ISSN: 1573-1561
    Keywords: Odor volatiles ; mites ; stored wheat ; Acarus siro ; Aeroglyphus robustus ; Lepidoglyphus destructor ; Acarina ; fungi ; ventilation ; tridecane ; citral
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract Tridecane, not previously reported in infested bin-stored grain, was associated with three mite species,Acarus siro (L.),Aeroglyphus robustus Banks, andLepidoglyphus destructor (Schrank), which were introduced into 15.2% moisture content wheat stored in two unheated experimental bins in Manitoba during 1986–1987. The mites and volatiles were sampled at weekly to bimonthly intervals throughout the year. The mites produced tridecane all year, although they overwintered at low numbers. Ventilation of one bin at an airflow rate of 1 liter/sec/m3 did not appear to affect mite survival and volatile production. Citral, an alarm pheromone for mites, was detected in mite-infested bin-stored grain. In laboratory studies all three mite species produced tridecane in wheat incubated at 20 °C and 70% relative humidity for two weeks.Acarus siro andAeroglyphus robustus reared at 25 °C and 90% relative humidity for four weeks on wheat and fungus-inoculated wheat also produced tridecane. Production of tridecane byA. robustus andL. destructor is being reported for the first time.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Hydrobiologia 61 (1978), S. 15-19 
    ISSN: 1573-5117
    Keywords: Crab ; Sesarma boulengeri ; Crustacea ; sex variations ; size variations ; hepatopancreas ; muscle ; cholesterol content ; protein content
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Variations in the biochemical composition (protein and cholesterol) have been studied in the hepatopancreas and thoracic muscle of the crab, Sesarma boulengeri as a function of sex and size. Second degree polynomial regression equations are used in predictive fashion to quantify the biochemical constituents in relation to sex and size. The effect of size is expressed as a power function of body weight. A good agreement is found between the experimental data and the theoretical values based on the polynomial. There is a negative correlation between the mass of crab and the reduced mass of cholesterol and protein of the tissues in both sexes, signifying higher metabolic and growth rates in younger crabs. The cholesterol and protein contents are higher in the male indicating more growth than in the female. However, there is tendency of the muscle protein to increase in large sized female crabs suggesting that bigger sized female are structurally better suited than males.
    Type of Medium: Electronic Resource
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