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Chinese Journal of Biological Control ›› 2023, Vol. 39 ›› Issue (3): 731-739.DOI: 10.16409/j.cnki.2095-039x.2023.01.002

• IDENTIFICATION OF NATURAL ENEMIES • Previous Articles     Next Articles

Identification, Development and Reproduction of Encarsia lutea, Parasitoid of Bemisia tabaci

NING Xiaoxue1,2, MAN Xiaoming1, LIU Wanxue1, GENG Hui3, YANG Nianwan1,2   

  1. 1. State Key Laboratory for Biology of Plant Diseases and Insect Pests/Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China;
    2. Western Research Institute, Chinese Academy of Agricultural Sciences, Changji 831100, China;
    3. College of Life Sciences, Shangrao Normal University, Shangrao 334001, China
  • Received:2022-03-23 Online:2023-06-08 Published:2023-06-25

Abstract: Encarsia lutea, is one of the dominant parasitoids of Bemisia tabaci. The field collected parasitoids were identified as E. lutea, by morphological features combined with molecular makers COI and 28S. It is facultative autoparasitoid, that diploid eggs were laid in the larvae of B.tabaci and developed as primary parasitoid, while the hyploid eggs were laid in the larvae or pupae of primary parasitoids in B. tabaci and developed as secondary parasitoid. The laboratory experiments were conducted under the conditions of 26 ℃, 65% RH, a photoperiod of 14L:10D to understand the development and reproduction of E. lutea. The results showed that the developmental time of egg to larva, prepupa to pupa, and preadult of females was 8.4 days, 6.8 days, and 15.1 days, while that for males was 6.9 days, 8.0 days and 14.9 days, respectively. The average longevity of females was 15.0 days, the fecundity was 50.0 for females mated once, and the percentage of male offspring was about 87.4%. The above related results can provide a reference for the study of the biological control benefits of facultative autoparasitoids, and provide a theoretical basis for the subsequent application of E. lutea.

Key words: Encarsia lutea, species identification, developmental time, fecundity, offspring sex ratio

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