The Sterile Insect Technique (SIT) is a target-specific, biologically based method used to control invading or established populations of pestiferous tephritids. SIT entails the release of large numbers of mass-reared, sterilized males, with the goal of achieving sterile male x wild female matings, which yield infertile eggs and suppress the growth rate of the pest population. The development of male-only strains generates the potential for more effective control of invading populations than standard bisexual releases. A genetic sexing strain based on sex-linked pupal color exists for Bactrocera dorsalis (Hendel), a major agricultural pest worldwide, but how this strain might perform in an SIT program has not been thoroughly investigated. As documented for several tephritid species, artificial selection imposed via mass-rearing may have adverse effects on various biological parameters of the released flies, including dispersion, life span, and mating competitiveness. The objective of the present study was to directly compare lure responsiveness using methyl eugenol, dispersal, and survival between males from wild and genetic sexing strains (GSS) of B. dorsalis. We conclude that males of the two strains differed significantly in dispersal ability but not in lure attraction or survival ability. The prospective effectiveness of the GSS in SIT programs against B. dorsalis is evaluated based on these findings.

中文翻译：

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来自野生和遗传性别鉴定品系的雄性东方果蝇（双翅目：实蝇科）的比较扩散和存活

昆虫不育技术 (SIT) 是一种针对特定目标的、基于生物学的方法，用于控制入侵或已建立的瘟疫实蝇种群。SIT 需要释放大量大规模饲养的不育雄性，目标是实现不育雄性 x 野生雌性交配，从而产生不育的卵并抑制害虫种群的增长率。与标准的双性恋释放相比，仅雄性菌株的发展产生了对入侵种群进行更有效控制的潜力。世界范围内的主要农业害虫 Bactrocera dorsalis (Hendel) 存在基于性相关蛹颜色的遗传性别鉴定菌株，但尚未彻底研究该菌株在 SIT 计划中的表现。正如对几个 tephritid 物种的记录，通过大规模饲养实施的人工选择可能对释放的果蝇的各种生物参数产生不利影响，包括分散、寿命和交配竞争力。本研究的目的是直接比较来自 B. dorsalis 的野生和遗传性别鉴定菌株 (GSS) 的雄性之间使用甲基丁香酚的诱饵反应性、扩散和存活率。我们得出结论，两个品系的雄性在传播能力上有显着差异，但在引诱或生存能力上没有显着差异。基于这些发现评估 GSS 在针对 B. dorsalis 的 SIT 计划中的预期有效性。来自 B. dorsalis 的野生和遗传性鉴定菌株 (GSS) 的雄性之间的扩散和存活。我们得出结论，两个品系的雄性在传播能力上有显着差异，但在引诱或生存能力上没有显着差异。基于这些发现评估 GSS 在针对 B. dorsalis 的 SIT 计划中的预期有效性。来自 B. dorsalis 的野生和遗传性鉴定菌株 (GSS) 的雄性之间的扩散和存活。我们得出结论，两个品系的雄性在传播能力上有显着差异，但在引诱或生存能力上没有显着差异。基于这些发现评估 GSS 在针对 B. dorsalis 的 SIT 计划中的预期有效性。