Effect of temperature on developmental time and longevity of Psyttalia cosyrae (Hymenoptera: Braconidae) |
| |
| Authors: | Samira A. Mohamed William A. Overholt Robert A. Wharton Slawomir A. Lux |
| |
| Affiliation: | a International Centre of Insect Physiology and Ecology, Nairobi, Kenyab Indian River Research and Education Center, University of Florida, Fort Pierce, FL, USAc Department of Entomology, Texas A&M University, College Station, TX, USA |
| |
| Abstract: | Psyttalia cosyrae (Wilkinson) (Hymenoptera: Braconidae) is a koinobiont, solitary larval-pupal parasitoid of Ceratitis cosyra (Walker) (Diptera: Tephritidae), and possibly other tephritid fruit flies. The effect of temperature on developmental time and longevity of this parasitoid was investigated and the thermal requirement at six constant temperatures (15±0.5, 20±0.5, 25±0.5, 27±0.5, 30±0.5, and 33±0.05°C) and 60-70% R.H was determined. The developmental rate increased with an increase in temperature. Females took a longer time to complete development than males at all temperatures tested. Development from egg to adult emergence required 244 degree-days (DD) above a thermal threshold of 11.9°C for both sexes pooled, 233 DD above 12.0°C for males and 256 DD above 11.6°C for females. Adult longevity was affected by temperature, and females lived longer than males at all temperatures tested. |
| |
| Keywords: | Ceratitis cosyra Psyttalia cosyrae temperature pre-imaginal development longevity |
| 本文献已被 InformaWorld 等数据库收录！ |
|
