Programa de Pós-Graduação em Fitossanidade, Universidade Federal de Pelotas, Av. Eliseu Maciel, s/n, 96010-900 Pelotas, RS, Brazil.
Programa de Pós-Graduação em Entomologia, Universidade Federal de Pelotas, Av. Eliseu Maciel, s/n, 96010-900 Pelotas, RS, Brazil.
An Acad Bras Cienc. 2021 Apr 30;93(2):e20190249. doi: 10.1590/0001-3765202120190249. eCollection 2021.
Anastrepha fraterculus (Wiedemann, 1830) (Diptera: Tephritidae) is a major fruit pest, which is basicaly controlled using insecticides, which represents a risk to beneficial arthropods, human health and food contamination. The sterile insect technique (SIT) is a potential alternative tool for the management of this pest, however, only conflicting data is found regarding the optimal dose to achieve sterility. Thus, this study evaluated the effect of gamma radiation doses (0, 40, 50, 60 and 70 Gy) on male and female reproductive sterility, gonads morphometry, emergence, flight ability, and longevity under nutritional stress of A. fraterculus. Full female sterility was achieved at 50 Gy, while full male sterility was achieved at 70 Gy. Both ovarian and testicular sizes were affected by irradiation, while no influence was observed on the quality parameters evaluated. Our results suggest that 70 Gy applied 48 h before adult emergence can be used to sterilize A. fraterculus in a SIT programme.
小眼实蝇（Wiedemann，1830）（双翅目：实蝇科）是一种主要的水果害虫，基本采用杀虫剂进行控制，但这会对有益节肢动物、人类健康和食物污染造成风险。不育昆虫技术（SIT）是这种害虫管理的一种潜在替代工具，但关于实现不育的最佳剂量仅发现相互矛盾的数据。因此，本研究评估了伽马射线剂量（0、40、50、60 和 70Gy）对小眼实蝇雄性和雌性生殖不育、性腺形态计量学、出现、飞行能力和在营养胁迫下的寿命的影响。50Gy 可实现完全雌性不育，而 70Gy 可实现完全雄性不育。照射会影响卵巢和睾丸的大小，但对评估的质量参数没有影响。我们的结果表明，在成虫出现前 48 小时应用 70Gy 可用于 SIT 计划中小眼实蝇的绝育。
