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Influence of passion fruit genotypes and larval density on the biology of Dione juno juno (Cramer) (Lepidoptera: Nymphalidae)

The biology of Dione juno juno (Cramer) was studied under laboratory conditions; the effects of larval density and of feeding the larvae on leaves of nine passion fruit genotypes were observed. The duration, weight and viability of the larval and pupal phases were analyzed, as well as the longevity of unfed adults. The density of five larvae/recipient provided the best development of the insects. Passiflora setacea presented feeding nonpreference and/or antibiosis while the hybrid P. alata2 x P. macrocarpa presented feeding nonpreference, possibly associated to the presence of chemical compounds with high degree of repellence to D. juno juno or to feeding suppressants.

Insecta; host plant resistance; type of resistance


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