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INFLUENCE OF APPLE CULTIVAR, TREE PHENOLOGY, AND LEAF QUALITY ON THE DEVELOPMENT AND MORTALITY OF CHORISTONEURA ROSACEANA (LEPIDOPTERA: TORTRICIDAE)

Onstad, David W. ; Reissig, W. Harvey ; Shoemaker, Christine A.

In: The Canadian Entomologist, 1986, vol. 118, no. 2, p. 123-132

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    Titel
    • INFLUENCE OF APPLE CULTIVAR, TREE PHENOLOGY, AND LEAF QUALITY ON THE DEVELOPMENT AND MORTALITY OF CHORISTONEURA ROSACEANA (LEPIDOPTERA: TORTRICIDAE)
    Autor
    • Onstad, David W.. Department of Entomology, New York State Agricultural Experiment Station, Cornell University, Geneva, New York, USA 14456
    • Reissig, W. Harvey. Department of Entomology, New York State Agricultural Experiment Station, Cornell University, Geneva, New York, USA 14456
    • Shoemaker, Christine A.. Department of Environmental Engineering, Cornell University, Ithaca, New York, USA
    Dokumententyp
    • Postprint
    Sprache
    • Englisch
    Veröffentlicht in
    • The Canadian Entomologist, 1986, vol. 118, no. 2, p. 123-132. Cambridge University Press
    Andere elektronische Ausgabe
    Klassifikation
    • Biologie, Biowissenschaften
    OAI-PMH-ID
    • oai:doc.rero.ch:303558
    Summary
    The obliquebanded leafroller, Choristoneura rosaceana (Harris), is a polyphagous insect that is occasionally a serious pest of apple trees. To determine how well adapted it is to this host plant, we studied its nutritional ecology by measuring the development and mortality of larvae and pupae reared on different sets of leaves. We investigated the influence of 3 apple cultivars, 2 time periods (June, July-August), and several leaf types, including those with different ages and different branch positions, on these processes. Larvae and pupae developed more rapidly with lower mortality on younger leaves than on older ones. When larvae were fed leaves collected from the same cultivar and branch position at different times during the season, developmental rates were faster and survival rates were higher earlier in the season. Development and survival were similar on leaves of all cultivars