Data/hora: 20/06/2024 17:01:09

Biblioteca(s): | Embrapa Uva e Vinho.
Tipo da produção científica: | Artigo em Periódico Indexado
Circulação/Nível: | B - 1
Data corrente: | 09/01/2015
Data da última atualização: | 09/01/2015
Autoria: | SILVA, O. A. B. N. e; BERNARDI, D.; BOTTON, M.; GARCIA, M. S.
Afiliação: | MARCOS BOTTON, CNPUV.
Título: | Biological characteristics of Grapholita molesta (Lepidoptera: Tortricidae) induced to diapause in laboratory.
Ano de publicação: | 2014
Fonte/Imprenta: | Journal of Insect Science, v. 14, n. 1, 2014.
Idioma: | Inglês
Conteúdo: | In southern Brazil, Grapholita molesta (Busck) (Lepidoptera: Tortricidae) uses diapause as survival strategy during the winter (May-August). In our study, we evaluated the effect of diapause on biological characteristics of the species for 4 months in laboratory. Newly hatched larvae of G. molesta were induced to diapause changing the photoperiod and temperature (T) (12&#8201;±&#8201;1°C), relative humidity (RH) (70&#8201;±&#8201;10%), and a photophase of 12&#8201;h and, when they started diapause in the prepupal stage, the conditions were kept for 4 months. Afterwards, the insects were induced to finalize the diapause process at T 25&#8201;±&#8201;1°C, RH 70&#8201;±&#8201;10%, and a photophase of 16&#8201;h. We evaluated the duration and viability of the larval stages and pupae, pupae weight at 24&#8201;h and sex ratio (sr), periods of preoviposition, oviposition, and postoviposition; adult life span (males and females); fecundity (daily and total); embryonic period duration and eggs viability, comparing the data with insects nondiapause. The results show that diapause greatly affected the viability of pupal-adult stages of the population (21.8%) when compared with insects' nondiapause (80.0%). Total fecundity (83.0 eggs) and mean life span (12.0&#8201;d) of insects diapause was significantly lower compared with insects nondiapause (173.0 and 17.0), respectively. However, these differences were not observed in the sr, which was similar to insects diapause (sr&#8201;=&#8201;0.41) and insects nondiapause (sr&#8201;=&#8201;0.49). The diapause induced for 4 months negatively affects reproduction and life span of adults of G. molesta.
Palavras-Chave: | Metabolic expenditure; Oriental fruit; Reproduction rate.
Thesagro: | Entomologia; Fruticultura; Grapholita Molesta; Praga de planta.
Thesaurus Nal: | photophase; Rosaceae.
Categoria do assunto: | O Insetos e Entomologia
URL: | http://ainfo.cnptia.embrapa.br/digital/bitstream/item/115152/1/Botton2014-Diapause-x-Grapholita.pdf
Registro original: | Embrapa Uva e Vinho (CNPUV)
Exemplares: | CNPUV - (15649-1) - UPC - AP - DD -  -  -  - DIS