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  • 1965-1969  (4)
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  • 1
    ISSN: 1573-8248
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary American species ofProspaltella, P. aurantii How. unknown in Europe was studied in Alpes-Maritimes onQ. pyri living on fig-trees. In this country, host has two annual generations, and it overwinters like a second stage larvae, while in the same time, three generations occur for parasite. In the particular climatic conditions of this study, the efficiency of this parasite is complete before two years owing to the destruction of the mâle progeny.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    BioControl 12 (1967), S. 449-459 
    ISSN: 1573-8248
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary After a short introduction to place the present problem ofA. aurantii in Morocco, the authors mention importation of twoAphytis species (A. lingnanensis andA. melinus), the efficient parasites of the California Red Scale in several countries. Mass-breeding method used to build upAphytis production was this of the Californian workers, but numerous difficulties during 1966 have forbidden to raise a big production. Field colonization has been realized and good results has been obtained with low host densities, in several orchards. Now, the settlement of this problem should be searched out the «Integrated Control» and new export patterns for Citrus from Morocco.
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    BioControl 12 (1967), S. 241-255 
    ISSN: 1573-8248
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary Practical efficiency ofP. perniciosi was studied in France in four various orchards situated in three districts selected according to the climate: an orchard of apple-trees at Chézy; an orchard of apple-trees and cherry-trees at Brignais (Lyonnais) and an orchard of peach-trees at Mandelieu in the mediterranean region. Every time, in spite of the chemical treatments realized during the year, the real rate of parasitism increased and consequently San José scale populations has been reduced. If results are confronted with those obtained at the same time in foreign countries, it is possible to see that the climate plays the first part in the determinism ofProspaltella's efficiency, but the chemical treatments interfere also for checking the active increase of parasite.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    BioControl 13 (1968), S. 135-141 
    ISSN: 1573-8248
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Description / Table of Contents: Summary The Micropterous form ofEncyrtus rufulus Mercet, newly collected in France, is described and the macropterous form is re-described. Statistic analysis shows lack of transition between the two forms, which are morphologically separated. An attempt to a bio-systematic partition betweenEncyrtus andMicroterys species is suggested and micropterism in Encyrtid family is discussed.
    Notes: Conclusion ChezEncyrtus rufulus, le brachyptérisme entraîne uniquement des modifications structurales des ailes.E. rufulus est un exemple de Chalcidien, présentant deux formes alaires bien séparées, pour lequel les descriptions taxonomiques et les conclusions d'une analyse statistique doivent nécessairement être interprétées à la lumière des données biologiques. Nous retiendrons de ce cas précis, l'intérêt d'examiner le plus grand nombre possible d'exemplaires pour établir la validité des caractères spécifiques.
    Type of Medium: Electronic Resource
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