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Diapause initiation and alterations in the life cycle of Grapholita molesta (Busck) (Lepidoptera: Tortricidae) as induced by photoperiodic conditions

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Diapause initiation and alterations in the life cycle of Grapholita molesta (Busck) (Lepidoptera: Tortricidae) as induced by photoperiodic conditions

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Título Diapause initiation and alterations in the life cycle of Grapholita molesta (Busck) (Lepidoptera: Tortricidae) as induced by photoperiodic conditions
Autor Sausen, Carla Daniele
Redaelli, Luiza Rodrigues
Sant'Ana, Josue
Pires, Patrícia Daniela da Silva
Abstract Grapholita molesta (Busck) is one of the major pests of Rosaceae, causing significant damage to buds and fruits. In Southern Brazil, its population density is reduced during Rosaceae dormancy months. The present study evaluated the influence of different photoperiods (L:D) (10:14, 11:13, 12:12, 13:11, 14:10 and 16:8) at 25 ± 1ºC and 60 ± 10% RH on diapause induction of G. molesta eggs, larvae, prepupae, and pupae. The effects of the photoperiod on the life cycle of non-diapausing insects and on the second generation were also assessed. Prepupal diapause was observed only when eggs and neonates (≤ 12h-old larvae) were exposed to photophases from 10h to 14h long. Development of non-diapausing individuals and those from the second generation tended to be longer in photophases between 10h and 14h long.
Contido em Neotropical entomology. Londrina, PR. Vol. 40, n. 5 (set./out. 2011), p. 529-532
Assunto Entomologia agricola
Inseto
Mariposa oriental
[en] hibernation
[en] O riental moth
[en] photophase
[en] Rosacea
Origem Nacional
Tipo Artigo de periódico
URI http://hdl.handle.net/10183/87942
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