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  • 1
    Electronic Resource
    Electronic Resource
    Physiology and morphology of pheromone-specific sensilla on the antennae of male and female Spodoptera littoralis (Lepidoptera: Noctuidae)
    Amsterdam : Elsevier
    Journal of Insect Physiology 39 (1993), S. 253-260 
    Details
    ISSN: 0022-1910
    Keywords: Electrophysiology ; Lepidoptera ; Noctuidae ; Olfaction ; Scanning electron microscopy ; Sensilla ; Sex pheromone ; Spodoptera littoralis
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1016/0022-1910(93)90096-A
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Larval diet influence on oviposition behaviour inSpodoptera littoralis (1995)
    Springer
    Entomologia experimentalis et applicata 74 (1995), S. 71-82 
    Details
    ISSN: 1570-7458
    Keywords: Lepidoptera ; Spodoptera littoralis ; oviposition ; deterrents ; feeding ; larval experience ; induction ; selection
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Females ofSpodoptera littoralis Boisd. (Lepidoptera: Noctuidae) with different feeding experiences during their larval development were tested for their ovipositional response to methanol extracts of larval frass and semisynthetic diets. The effect of the following frass, diet and diet component extracts was tested: (a) frass fromS. littoralis orAgrotis segetum larvae fed on a potato-based diet; (b) frass fromS. littoralis larvae fed on a wheat germ-based diet; (c) potato and wheat germ-based diets; and (d) potatoes and wheat germ. Ovipositing females without prior experience of the potato diet were deterred by extracts of: (1) larval frass from either species fed on potato diet; (2) the potato-based diet; (3) potato. Also females with experience of the potato diet during only a part of their larval development were deterred from oviposition by frass of larvae reared on the potato diet and by the diet itself. However, for females reared on the potato diet for their entire larval development, oviposition was no longer deterred by either of the three extracts listed above. Extracts of: (1) frass from larvae of either species reared on wheat germ diet: (2) the wheat germ diet; or (3) wheat germ did not significantly affect oviposition. Females with ablated antennae were still deterred by frass extracts from larvae fed on potato diet, when they had been reared on the wheat germ diet. In feeding experiments, larvae of larval stage one and of larval stage three-four reared on either of the two diets preferred to feed on the wheat germ diet. However, the preference was significantly stronger for larvae with no prior contact with the potato diet. The effect of larval experience on the loss of oviposition-deterring activity by extracts of larval frass, diets and diet components is discussed in view of induction and selection.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02383169
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    The inheritance of restriction fragment length polymorphisms in the flax rust Melampsora lini (1992)
    Springer
    Theoretical and applied genetics 84 (1992), S. 845-850 
    Details
    ISSN: 1432-2242
    Keywords: Flax ; Rust ; RFLP ; Genetic segregation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary Random cDNA sequences synthesized from poly A+ RNA extracted from germinated urediospores of the flax rust fungus, Melampsora lini, were used as probes to detect restriction fragment length polymorphisms (RFLPs) in three races of M. lini originating from cultivated flax, Linum usitatissimum, and one race originating from Australian native flax, L. marginale. Fourteen out of 22 probes tested detected RFLPs in the three races from cultivated flax while 19 of the probes detected polymorphisms between these three races and the race from L. marginale. The segregation of seven RFLPs was determined in a family of 19 F2 progeny derived from a cross between two of the rust races. With six of these the inheritance was consistent, in each case, with the segregation of alleles at a single locus. Inheritance of the seventh was unusual and an explanation involving two loci with null alleles at each was proposed. No linkage was detected between any of the RFLP loci and nine unlinked loci specifying avirulence.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00227395
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    DNA restriction fragment length polymorphisms in the wheat stem rust fungus, Pucinia graminis tritici (1992)
    Springer
    Theoretical and applied genetics 83 (1992), S. 715-719 
    Details
    ISSN: 1432-2242
    Keywords: RFLP ; Pucdnia ; cDNA ; Leaf rust
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary A cDNA library was synthesized from poly A+ RNA extracted from germinated urediospores of the wheat stem rust fungus, Puccnia graminis tritici (race 343-1,2,3,5,6). The library was used as a source of probes to detect RFLPs in genomic DNA from three major races of P. graminis tritici in Australia, as well as two formae speciales of P. graminis. DNA extracted from another Puccnia species infecting wheat, P. recondita tritici (wheat leaf rust), was included in the analysis. Nine different cDNA probes were analysed, and all detected polymorphisms between the races and formae speciales of P. graminis that were tested. Seven detected polymorphisms between P. graminis and P. recondita; the remaining two probes showed no detectable homology to P. recondita genomic DNA. The potential applications of RFLP markers to study the origin of genetic variability in P. graminis tritici are discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00226689
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    Paper (German National Licenses)
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