Female presence enhances sexual performance of sterile Anastrepha ludens males of the Tapachula‐7 GSS strain,Entomologia Experimentalis et Applicata

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Female presence enhances sexual performance of sterile Anastrepha ludens males of the Tapachula‐7 GSS strain
Entomologia Experimentalis et Applicata ( IF 1.4 ) Pub Date : 2020-07-19 , DOI: 10.1111/eea.12947
José Arredondo ₁ , Lia Ruiz ₁ , Gladis López ₁ , Diana Pérez‐Staples ₂ , Francisco Díaz‐Fleischer ₂

Affiliation

The sterile insect technique (SIT), used for the control of many tephritid fly pests, is based on the rearing and release of large numbers of sexually competitive sterile insects into a wild population. In the interest of reducing expenses and increasing SIT effectiveness, genetic sexing strains (GSS) have been developed. These strains allow the production and release of only males. The objective of our study was to assess the effects of pre‐release adult exposure to methoprene and to females on the mating propensity and mating competitiveness of GSS sterile males of Anastrepha ludens (Loew) (Diptera: Tephritidae). GSS sterile males were kept on a protein‐sugar (protein‐fed) or a protein‐sugar‐methoprene diet and were exposed to different proportions of females for the normal pre‐release period of 5 days. Using laboratory and field‐cage bioassays, we examined the influence of methoprene and female presence on the mating success of sterile males of 3–9 days old, in competition for wild females with untreated males and with wild males. Methoprene and female exposure had no significant effects on male mating success in the laboratory, whereas age had a positive relationship with the number of copulations observed. However, in field‐cage bioassays, males exposed to females obtained a higher number of copulations than unexposed control males. Possible implications of these findings for programs that use GSS and especially for the campaign against Mexican fruit flies are discussed.

中文翻译：

雌性存在增强了 Tapachula-7 GSS 菌株的不育实实实蝇雄性的性表现

昆虫不育技术 (SIT) 用于控制许多实蝇害虫，其基础是将大量有性竞争的不育昆虫饲养和释放到野生种群中。为了减少费用和提高 SIT 的有效性，已经开发了遗传性别菌株 (GSS)。这些菌株只允许生产和释放雄性。我们研究的目的是评估释放前成年暴露于甲氧普林和雌性对实蝇（Loew）（双翅目：实蝇科）GSS 不育雄性交配倾向和交配竞争力的影响。GSS 不育雄性保持蛋白质-糖（蛋白质喂养）或蛋白质-糖-甲氧普林饮食，并在正常的 5 天预释放期暴露于不同比例的雌性。使用实验室和田间笼生物测定，我们研究了烯虫酯和雌性的存在对 3-9 天大的不育雄性交配成功的影响，在与未经处理的雄性和野生雄性竞争野生雌性的过程中。在实验室中，甲氧戊二烯和雌性暴露对雄性交配成功没有显着影响，而年龄与观察到的交配次数呈正相关。然而，在野外笼养生物测定中，与未暴露的对照雄性相比，暴露于雌性的雄性获得了更多的交配。讨论了这些发现对使用 GSS 的计划，尤其是对墨西哥果蝇运动的可能影响。在实验室中，甲氧戊二烯和雌性暴露对雄性交配成功没有显着影响，而年龄与观察到的交配次数呈正相关。然而，在野外笼养生物测定中，与未暴露的对照雄性相比，暴露于雌性的雄性获得了更多的交配。讨论了这些发现对使用 GSS 的计划，尤其是对墨西哥果蝇运动的可能影响。在实验室中，甲氧戊二烯和雌性暴露对雄性交配成功没有显着影响，而年龄与观察到的交配次数呈正相关。然而，在野外笼养生物测定中，与未暴露的对照雄性相比，暴露于雌性的雄性获得了更多的交配。讨论了这些发现对使用 GSS 的计划，尤其是对墨西哥果蝇运动的可能影响。

更新日期：2020-07-19

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