Data/hora: 21/09/2024 10:18:51

Biblioteca(s): 	Embrapa Uva e Vinho.	
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