Data/hora: 24/06/2024 21:55:45

Biblioteca(s): | Embrapa Uva e Vinho.
Data corrente: | 10/08/2018
Data da última atualização: | 29/04/2019
Autoria: | BERTIN, A.; LERIN, S.; BOTTON, M.; PARRA, J. R. P.
Afiliação: | A. Bertin, Depto de Entomologia e Acarologia, Univ de São Paulo, Piracicaba, SP, Brasil; S. Lerin, Instituto Federal de Educação, Ciência e Tecnologia do Rio Grande Do Sul, Bento Gonçalves, RS, Brasil; MARCOS BOTTON, CNPUV; J. R. P. Parra, Depto de Entomologia e Acarologia, Univ de São Paulo, Piracicaba, SP, Brasil.
Título: | Temperature thresholds and thermal requirements for development and survival of dysmicoccus brevipes (Hemiptera: Pseudococcidae) on table grapes.
Ano de publicação: | 2018
Fonte/Imprenta: | Neotropical Entomology, v. 7, n. 41, p. 1-7, Jul. 2018. [Online].
Idioma: | Inglês
Conteúdo: | Temperature is an important climate factor that has a direct influence on insect biology and consequently a crucial role in forecasting and integrated pest management. The mealybug Dysmicoccus brevipes (Cockerell) (Hemiptera: Pseudococcidae) is one of the most common species in Brazilian vineyards. Here, development and survival of D . brevipes on leaves of table grapes ( Vitis vinifera cv. Itália) were studied at five constant tem- peratures (15, 20, 25, 28, and 30 ± 1°C) under laboratory conditions. We investigated the developmental time and nymphal survival, temperature thresholds, and the degree-day requirements for each life stage of D . brevipes . The developmental time for the nymphal stage ranged from 32 to 130 days with decreasing the temperature, with the temperatures of 28 and 30°C providing the shorter developmental time. Survival of the entire nymphal stage was affected by the temperature, ranging from 81% at 20°C to 1% at 15°C. The predicted upper lethal temperature was 34.5°C, while the optimal temperature was 28.6°C. The minimum threshold for total devel- opment of D . brevipes occurred at 8.2°C. Dysmicoccus brevipes required 678.4 degree-days to complete development from first-instar nymph to adult. The temperature of 30°C was the most suitable for the development of D . brevipes. The thermal thresholds estimated for D . brevipes life cycle suggest that this species can develop in different table grape-producing regions of Brazil, in a temperature range between 8 and 35°C.
Palavras-Chave: | Lower developmental threshold; Optimal temperature; Pineapple mealybug; Thermal constant.
Thesagro: | Dysmicoccus Brevipes; Vitis Vinifera.
Thesaurus Nal: | Insect biology.
Categoria do assunto: | --
URL: | http://ainfo.cnptia.embrapa.br/digital/bitstream/item/181253/1/Bertin-et-al-2018-Neotropical-Entomology.pdf
Registro original: | Embrapa Uva e Vinho (CNPUV)
Exemplares: | CNPUV - (17744-1) - UPC - AP - DD - 634.82 -  - 18.02347 - DIS