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Life History and Host Preference of Trichopria drosophilae from Southern China, One of the Effective Pupal Parasitoids on the Drosophila Species

by Chuandong Yi 1,2,3,†, Pumo Cai 1,2,3,4,†, Jia Lin 1,2,3, Xuxiang Liu 1,2,3, Guofu Ao 1,2,3,5, Qiwen Zhang 1,2,3, Huimin Xia 1,2,3, Jianquan Yang 1,2,3,4,* and Qinge Ji 1,2,3,4,*
1
Institute of Beneficial Insects, Plant Protection College, Fujian Agriculture and Forestry University, Fuzhou 350002, China
2
State Key Laboratory of Ecological Pest Control for Fujian and Taiwan Crops, Fuzhou 350002, China
3
Key Lab of Biopesticide and Chemical Biology, Ministry of Education, Fuzhou 350002, China
4
Department of Horticulture, College of Tea and Food Science, Wuyi University, Wuyishan 354300, China
5
College of Agriculture, Anshun University, Anshun 561000, China
*
Authors to whom correspondence should be addressed.
These authors make equal contribution to this work.
Insects 2020, 11(2), 103; https://doi.org/10.3390/insects11020103
Received: 12 January 2020 / Revised: 29 January 2020 / Accepted: 29 January 2020 / Published: 4 February 2020
This study aims to evaluate several life-history traits of a T. drosophilae population from southern China and its parasitic preference of three Drosophila species. For mated T. drosophilae females, the mean oviposition and parasitization period were 27.20 and 37.80 d, respectively. The daily mean parasitization rate was 59.24% per female and the lifetime number of emerged progeny was 134.30 per female. Trichopria drosophilae females survived 37.90 and 71.61 d under host-provided and host-deprived conditions, respectively. To assess the potential for unmated reproduction in T. drosophilae, the mean oviposition and parasitization period of unmated females was 22.90 and 47.70 d, respectively. They had a daily mean parasitization rate of 64.68%, produced a total of 114.80 offspring over their lifetime, and survived 52 d. Moreover, T. drosophilae showed a preference towards D. suzukii based on the total number of emerged offspring under a choice test. Our findings indicate that T. drosophilae from southern China appears to be suitable for the control of D. suzukii in invaded areas, due to its reproductive potential. View Full-Text
Keywords: spotted wing drosophila; biological control; Trichopria drosophilae; life table fertility; parasitic preference spotted wing drosophila; biological control; Trichopria drosophilae; life table fertility; parasitic preference
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Yi, C.; Cai, P.; Lin, J.; Liu, X.; Ao, G.; Zhang, Q.; Xia, H.; Yang, J.; Ji, Q. Life History and Host Preference of Trichopria drosophilae from Southern China, One of the Effective Pupal Parasitoids on the Drosophila Species. Insects 2020, 11, 103.

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