Bibliographic Details
| Title: |
Impact of Irradiated Drosophila melanogaster Pupae on the Quality and Population Parameters of Trichopria drosophilae. |
| Authors: |
Chen, Yong-Zhuo1 (AUTHOR), Gong, Xiao-Meng2 (AUTHOR), Zhang, Min1,3 (AUTHOR), Liu, Peng-Cheng1,2 (AUTHOR), Zhang, Xu-Xiang2,3 (AUTHOR), Hu, Hao-Yuan2,3 (AUTHOR) haoyuanhu@126.com |
| Source: |
Insects (2075-4450). Apr2025, Vol. 16 Issue 4, p379. 14p. |
| Subject Terms: |
*DROSOPHILA melanogaster, *BODY size, *FRUIT flies, *DROSOPHILIDAE, *PARAMETERS (Statistics), *DROSOPHILA suzukii |
| Abstract: |
Simple Summary: Trichopria drosophilae is a cosmopolitan pupal endoparasitoid of various fruit fly species, including Drosophila suzukii. Although many larval and pupal parasitoids have been found to effectively control D. suzukii, the pupal parasitoid T. drosophilae appears to be one of the most promising candidates, with extensive studies on the effectiveness of its parameters against D. suzukii. Host irradiation, which is designed to inhibit the successful development of hosts, is a standard practice in the mass rearing of various parasitoids. However, the ability of T. drosophilae and its offspring to successfully utilize gamma-irradiated D. melanogaster pupae as hosts has yet to be tested. Our results showed that irradiated pupae had a significant negative impact on the parasitism rate, offspring eclosion rate, offspring number, and female body size of F1 T. drosophilae, all of which were significantly lower than those in the normal group. However, there was no significant difference in the parasitism rate, body size, offspring eclosion rate, offspring number, or offspring sex ratio between F2 T. drosophilae emerging from the two types of Drosophila pupae. These results suggest that irradiated pupae influence T. drosophilae in the F1 generation, but the effects disappear in the F2 generation. Trichopria drosophilae is a globally distributed pupal parasitoid that targets various species within the Drosophilidae family, including the invasive Drosophila suzukii. The mass rearing of T. drosophilae is a crucial step in ensuring their successful application for field D. suzukii control. The pupae of Drosophila melanogaster are currently used as a host for the mass rearing of T. drosophilae. After irradiation, the immune system function of Drosophila pupae was weakened, leading to an increase in the parasitism efficiency of the T. drosophilae. Our results showed that irradiated pupae had a significant impact on the parasitism rate, offspring eclosion rate, offspring number, and female body size of F1 T. drosophilae, all of which were significantly lower than those in the normal group. However, there was no significant difference in the parasitism rate, body size, offspring eclosion rate, offspring number, or offspring sex ratio between F2 T. drosophilae emerging from treated or untreated Drosophila pupae. Compared with F2, F1 had a significantly higher net reproductive rate (R₀), mean generation time (T), and doubling time (DT), while the intrinsic rate of increase (r) was significantly lower. Using irradiated D. melanogaster pupae provides an efficient method for the mass rearing of T. drosophilae and offers valuable insights into its potential effectiveness in field D. suzukii control. [ABSTRACT FROM AUTHOR] |
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