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The Release of a Small Percentage of Sterile Bactrocera dorsalis (Diptera: Tephritidae) Males Relative to Fertile Males Induces the Collapse of the Progeny Population

文献类型： 外文期刊

作者： Qi Peng;Fujun Liang;Yanfei Zhu;Ziwen Teng;Yinjun Fan;Yongyue Lu;Xin Du;Yonglin Ren;Fanghao Wan;Hongxu Zhou

作者机构：

关键词： （0-2-4）Age-stage two-sex life table;Bactrocera dorsalis;Population collapse;Small percentage release;Sterile insect technique

期刊名称： Entomological News

ISSN： 0013-872X

年卷期： 2025 年 132 卷 1 期

页码：

收录情况： SCIE（2025版）

摘要： The sterile insect technique (SIT) is an environmentally friendly and species-specific method widely used to control agriculturally important fruit flies (Diptera: Tephritide). Previous studies have focused on the effects of releasing a higher proportion of sterile males relative to fertile males on Bactrocera dorsalis populations. In this study, we focused on the impact of releasing a small percentage of sterile males relative to fertile males on B. dorsalis populations. The results showed that when the ratio of wild to sterile males was 1:3, the number of eggs produced within 12 days (5166 eggs) and hatching rate (66%) were significantly lower than those of the control group (6680 eggs and 85%). When the males were released at a ratio of 1:3 for the second time, the hatching and pre-adult survival rates of B. dorsalis progeny were 43% and 37%, respectively. There were also significant decreases in R0, r, λ, and T compared with the control, and after 90 days the population size predicted using the TIMING-MSChart program was reduced by 63%. Overall, these findings indicate that the release of sterile males as a small proportion relative to fertile males resulted in the collapse of the B. dorsalis population. This study establishes a scientific foundation for the release of sterile males in the field and the environmentally friendly prevention and control of B. dorsalis infestations.

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