J Econ Entomol. 2014 Feb;107(1):161-5. doi: 10.1603/ec13316.
The mango pulp weevil, Sternochetus frigidus (F.), is an important quarantine pest preventing the export of mangoes from the Philippines to the United States and other countries. Previously, a radiation dose of 100 Gy was proposed for phytosanitary treatment of S. frigidus based on dose-response studies with larvae, pupae, and adult weevils. To validate an irradiation treatment, large-scale confirmatory tests were conducted with adults (the most radiation-tolerant stage) in mangoes at 100 and 150 Gy. After treatment, adults were removed from fruit, sexed, and mated in pairs to observe any reproduction. At 100 Gy, adults laid a small number of eggs but none of the eggs hatched. At 150 Gy (measured doses 96.7-164.1 Gy),4,559 treated weevils laid no eggs, indicating that this dose caused complete sterility. Irradiation treatment with a minimum absorbed dose of 165 Gy will therefore provide quarantine security for S. frigidus in exported Philippine mangoes.
芒果果肉象鼻虫，即 Sternochetus frigidus (F.)，是阻止菲律宾芒果出口到美国和其他国家的重要检疫性害虫。此前，根据幼虫、蛹和成虫象鼻虫的剂量反应研究，提出了 100Gy 的辐照剂量，作为 S. frigidus 的植物检疫处理。为了验证辐照处理，在 100 和 150Gy 下对芒果中的成虫（最能耐受辐射的阶段）进行了大规模的确认性测试。处理后，成虫从果实中取出，进行性别鉴定并成对交配，以观察任何繁殖情况。在 100Gy 时，成虫产下少量卵，但没有一个卵孵化。在 150Gy（实测剂量为 96.7-164.1Gy）时，4559 只处理过的象鼻虫没有产卵，表明该剂量导致完全不育。因此，吸收剂量至少为 165Gy 的辐照处理将为菲律宾出口芒果中的 S. frigidus 提供检疫安全保障。
