Life tables of the laboratory population of Bradysia odoriphaga Yang et Zhang (Diptera: Mycetophilidae) at different temperatures

Life tables of laboratory population of the Chinese chive maggot, Bradysia odoriphaga were constructed at four temperatures. The results showed that the developmental rate increased with the temperature increasing from 15[degree]C to 30[degree]C. The longest duration of the generation was 72.4 days observed at 15[degree]C, the shortest was 21.2 days at 30[degree]C, and in between 27.3 days and 23.9 days at 20[degree]C and 25 C respectively. The threshold temperatures and the effective accumulated temperatures required for egg, larva, pupa and whole generation were 5.9[degree]C, 8.7[degree]C, 3.3[degree]C, 7.8[degree]C and 77.7, 267.2, 75.7, 418.2 degree-day respectively. The lifespan was shortened with the temperature increasing. The longest lifespan of female was 11.7 days at 20[degree]C, and the shortest was 4.1 days at 30[degree]C. In general, the adult longevity of female was longer than that of male. The maximum number of eggs laid per female was 159.9 at 20[degree]C, while the least was 114.7 at 30[degree]C. It could be concluded from the results that temperature had great effect on the development of B. odoriphaga. The most suitable temperature range was 20[degree]C to 25[degree]C, during which there were longer longevity of the adult, higher oviposition and the highest population trend index. Too high or too low temperatures would be adverse to the establishment of the maggot population.