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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Oecologia 73 (1987), S. 116-119 
    ISSN: 1432-1939
    Keywords: Leaf miner ; Stilbosis ; Oak trees ; Quercus geminata ; Mine distributions ; Abscission
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary Leaf-mining Stilbosis quadricustatella larvae are distributed non-randomly within leaves of their host plants, sand live oak (Quercus geminata) and water oak (Q. nigra), in north Florida. Fewer mines are found together on the same side of the mid-vein than separated, on opposite sides of the mid-vein. Larvae do not normally cross the mid-vein but create small blotch-like mines along subsidiary veins. Investigations of the usual mortality factors acting on these leaf-miner populations, including competition, parasitism, and predation, revealed no significant differences in these factors between mines separated by the mid-vein and those on the same side of the leaf. However, early leaf abscission, which kills the larvae present in the leaf, occurs significantly more frequently in cases where larvae are clustered on one leaf side. The reasons for this differential leaf abscission are not yet clear.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Biochemical genetics 20 (1982), S. 1131-1137 
    ISSN: 1573-4927
    Keywords: salivary proteins ; polymorphism ; polyacrylamide electrophoresis ; parotid middle band ; basic proline rich
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract Amino acid composition and electrophoretic mobility suggest that two polymorphic proteins in human parotid saliva, Pm and PmS, are basic proline-rich proteins. Comparison of two basic proline-rich proteins previously isolated by D. L. Kauffman and P. J. Keller (1979) [Arch. Oral. Biol. 24: 249], IB-6 and IB-9, with PmS and Pm demonstrated corresponding electrophoretic mobilities on cationic polyacrylamide slab gels. Further, the amino acid compositions of IB-9 and Pm were found to be similar. Although differences in amino acid composition and carbohydrate content were noted, such differences could be accounted for, suggesting that IB-9 and Pm are identical.
    Type of Medium: Electronic Resource
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