Biological parameters and thermal requirements of the parasitoid Praon volucre (Hymenoptera: Braconidae) with Macrosiphum euphorbiae (Hemiptera: Aphididae) as host |
| |
| Authors: | BF De Conti MV Sampaio JC van Lenteren |
| |
| Institution: | 1. Departamento de Entomologia , Universidade Federal de Lavras , 37200-000, Lavras, MG, Brazil;2. Instituto de Ciências Agrárias , Universidade Federal de Uberlandia , 38408-100, Uberlandia, MG, Brazil;3. Laboratory of Entomology , Wageningen University , 6700 EH, Wageningen, The Netherlands |
| |
| Abstract: | The effect of temperature on the biology of Praon volucre (Haliday, 1833) (Hymenoptera: Braconidae) in Macrosiphum euphorbiae (Thomas, 1878) (Hemiptera: Aphididae) hosts was studied and the thermal requirements of the parasitoid were determined. Experiments were carried out at 16, 19, 22, 25, and 28 ± 1°C with 70 ± 10% relative humidity and 12 h photophase. The developmental time of P. volucre males and females decreased between 16 and 23°C. The highest percentages of aphid parasitism and adult parasitoid emergence were observed at 16, 19, and 22°C. The sex ratio (expressed as % females) decreased between 16 and 23°C. Male and female longevity was high between 19 and 22°C and decreased strongly at 25°C. The lower temperature threshold for P. volucre was 5.17°C and the thermal constant was 243 degrees-days. |
| |
| Keywords: | potato aphid biological control temperature range Aphidiinae parasitoid emergence |
|
|
