Abstract:

To research the influence of temperature on the development and reproduction of Thrips hamaiiensis (Morgan), series of experiments were carried out to investigate the experimental population growth of T. hamaiiensis at five constant temperatures (20, 24, 28, 32 and 36℃) in the laboratory. The results indicated that, within the range from 20℃ to 28℃, the developmental duration of T. hamaiiensis evidently reduced with the increase of temperature, while increased when the temperature went beyond 32℃; within the range from 20℃ to 36℃. The developmental rate of T. hamaiiensis increased with the increasing temperature. The development threshold temperature of T. hamaiiensis at its egg, nymphal, prepupal, pupal and egg-adult stages was 15.67, 9.48, 11.06, 8.54 and 11.39℃respectively, and the effective accumulated temperatures was 91.23, 82.35, 41.23, 34.81 and 251.43℃?d respectively. Within the range of 20~36℃, the generation survival rate of T. hamaiiensis decreased according to the sequence of 32℃, 28℃, 24℃, 20℃ and 36℃. It can be concluded that the temperature had great influence on the developmental duration and survival rate of experimental populations of T. hamaiiensis.