Host Stage Preference of Trichopria drosophilae to Fruit Fly Pupae

doi:10.16409/j.cnki.2095-039x.2019.05.008

Abstract

Abstract: Fruit fly Drosophila melanogaster is one of the fruit pests of berry fruits, especially grape berries. Trichopria drosophilae is a parasitoid parasitizing pupae of the fruit fly. The selectivity of T. drosophilae on D. melanogaster pupae of different ages was studied under the condition of 26℃, RH 50% and photoperiod of 14L:10D. Results showed that T. drosophilae could parasitize D. melanogaster pupae of all ages, but preferred the prepupae. When the host was prepupa, the number of wasp progeny, parasitism rate and selection coefficient reached 14.0, 35% and 0.13, respectively, which were significantly higher than those obtained with pupae aged 1-3 days. Offspring developmental duration and female proportion were not affected by pupal age. Therefore, D. melanogaster prepupae is the best host stage for the parasitism of T. drosophilae. The present results are of significance for biological control of D. melanogaster and other flies.

Key words: Drosophila melanogaster, Trichopria drosophilae, stages selection, development

CLC Number:

S476.1

DAI Xiaoyan, SHI Hongmei, JIANG Xilong, LIANG Hongmin, GUO Yayun, GAO Huanhuan. Host Stage Preference of Trichopria drosophilae to Fruit Fly Pupae[J]. Chinese Journal Of Biological Control, 2019, 35(6): 977-981.

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