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Chinese Agricultural Science Bulletin ›› 2015, Vol. 31 ›› Issue (19): 159-165.doi: 10.11924/j.issn.1000-6850.casb15040190

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Development and Reproduction of Frankliniella occidentalis (Pergande) Under Conditions of Low Temperatures

  

  • Received:2015-04-27 Revised:2015-06-16 Accepted:2015-06-03 Online:2015-07-28 Published:2015-07-28

Abstract: In order to explore the influence of low temperature on the development and reproduction of Frankliniella occidentalis (Pergande), and to have a full knowledge of the pest in the work of IPM, F. occidentalis were reared under 5℃ and 10℃ respectively in the incubator and their development and reproduction were investigated and recorded. The results showed that F. occidentalis could not complete a life cycle at 5℃. The eggs could not be hatched, the first instar nymphs were able to develop into the second instars but unable to develop into pupae. The pupae could develop into adults but the adults could not lay eggs. When being placed under the condition of 10℃ , the thrips could complete a life cycle but showed a significant prolonged developmental time compared with that under 25℃. The results indicated that the low temperature resulted in delayed development and decreased fecundity of F. occidentalis. However, the thrips could return to normal growth when transferred from low temperature to room temperature, indicating that F. Occidentalis has strong tolerence to low temperature. In the control of this pest, it is necessary to pay attention to its tolerence to low temperature, and measures should be taken to prevent the burst of F. occidentalis when the temperture and the population begin to increase during the early spring.