For the past 10 years, we have been evaluating an Italian strain of the noctuid moth, Tyta luctuosa (Denis and Schiffermuller), as a prospective biological control agent of field bindweed (Convolvulus arvensis L.). A major part of our evaluation has involved the effects of temperature and photoperiod on population growth and development of this moth. This presentation synthesizes findings from previous research aimed at determining constraints to seasonal activity and potential for population development imposed by photoperiod (diapause) and temperature. By integrating this knowledge, we can project the number of generations possible and the population growth potential of this weed-feeding agent at various latitudes and temperature zones in North America. We also compare the phenology of the bindweed moth to that of field bindweed.
Species 1: Lepidoptera Noctuidae Tyta luctuosa (field bindweed moth)
Keywords: biological control, weeds
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