Influence of temperature and flowers on longevity of adult <i>Platygaster demades</i>


  • W.R.M. Sandanayaka
  • J.G. Charles



Failure by Platygaster demades to provide effective biological control of apple leaf curling midge (ALCM) may be because the second spring generation of the parasitoid is asynchronous with that of its host Asynchrony may result from relatively slow development of P demades at low temperatures in spring In laboratory experiments adult female P demades provided with honeyagar diet lived significantly longer at 11deg;C (479 28 days) than at 19deg;C (194 days) and 27deg;C (27 days) Platygaster demades were provided with fresh flowers of Anethum graveolens (dill) Coriander sativam (coriander) Fagopyrum esculentum (buckwheat) Lobularia maritime (alyssum) Phacelia tanacetifolia (purple tansy) and Sinapis alba (white mustard) Both sexes lived longest (and comparably to the honeyagar diet) when provided with buckwheat flowers The possibilities for using buckwheat in apple orchards to prolong the first generation of P demades sufficiently to synchronise with the second generation population of ALCM are discussed




How to Cite

Sandanayaka, W. and Charles, J. 2006. Influence of temperature and flowers on longevity of adult &lt;i&gt;Platygaster demades&lt;/i&gt;. New Zealand Plant Protection. 59, (Aug. 2006), 184–189. DOI:




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