Assessment of mating competitiveness of sterile Ceratitis capitata in laboratory and field cage tests in northern Iran,Entomologia Experimentalis et Applicata

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Assessment of mating competitiveness of sterile Ceratitis capitata in laboratory and field cage tests in northern Iran
Entomologia Experimentalis et Applicata ( IF 1.4 ) Pub Date : 2021-03-02 , DOI: 10.1111/eea.13043
Mehrdad Ahmadi ₁ , Shiva Osouli ₁ , Adly Mohamed Mohamed Abd‐Alla ₂ , Nadia Kalantarian ₁

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In recent years, damage by Mediterranean fruit fly (medfly) Ceratitis capitata (Wiedemann) (Diptera: Tephritidae) on commercial fruit crops has reached a critical point in Iran. The sterile insect technique is considered the most effective strategy for the area-wide suppression or eradication of tephritid fruit flies, particularly the medfly. In this study, an area of citrus trees, including 39 field cages in Sari-Mazandaran province, was used for an experiment to test various irradiation doses and overflowing ratios on male competitiveness-induced sterility. Treatments 1 and 2 consisted of non-irradiated females (NF), non-irradiated males (NM), and irradiated males (IM) which emerged from pupae irradiated with 80 or 100 Gy. The IM:NM:NF ratios per field cage were varied as follows: 0:1:1, 1:0:1, 1:1:1, 3:1:1, 5:1:1, 10:1:1, and 15:1:1. We found that the mating rate of NF copulating with IM was significantly lower than that of NF mated with NM. The numbers of eggs and the percentages of egg hatching were significantly lower in IM × NF than in NM × NF crosses, and no eggs hatched in the 80–130 Gy dose range. The results of Fried's CV (male mating competitiveness value based on egg hatch) ranged from 0.41 to 0.78 at a dose of 80 Gy and from 0.35 to 0.63 at 100 Gy for various mating rates. It can be concluded that IM was fully competitive with NM at the dose range of 80–100 Gy of gamma radiation.

中文翻译：

在伊朗北部的实验室和野外笼试验中评估无菌人形角膜炎的交配竞争力

近年来，由地中海果蝇损害（地中海果蝇）地中海实蝇（Wiedemann）（Diptera：Tephritidae）在商业水果作物上的使用已达到伊朗的临界点。无菌昆虫技术被认为是在整个地区抑制或根除特福利果蝇，尤其是果蝇的最有效策略。在这项研究中，柑桔树的一个区域，包括Sari-Mazandaran省的39个田间笼子，用于进行实验，以测试各种辐照剂量和溢流率对雄性竞争性不育的影响。处理1和2由未辐照的雌性（NF），未辐照的雄性（NM）和辐照过80或100 Gy的p产生的辐照雄性（IM）组成。每个战场笼的IM：NM：NF比值变化如下：0：1：1，1：0：1，1：1：1，3：1：1，5：1：1，10：1：1 ，以及15：1：1。我们发现，与IM交配的NF的交配率明显低于与NM交配的NF的交配率。IM×NF杂交的卵数和孵化率显着低于NM×NF杂交，在80-130 Gy剂量范围内没有卵孵化。在80 Gy剂量下，Fried的CV（基于卵孵化的雄性交配竞争力值）的结果在各种交配率下的范围从0.41到0.78，在100 Gy的情况下从0.35到0.63。可以得出结论，在80-100 Gy的伽马射线剂量范围内，IM与NM完全竞争。在80 Gy的剂量下为41至0.78，在100 Gy的剂量为0.35至0.63，适用于各种交配速率。可以得出结论，在80-100 Gy的伽马射线剂量范围内，IM与NM完全竞争。在80 Gy的剂量下为41至0.78，在100 Gy的剂量为0.35至0.63，适用于各种交配速率。可以得出结论，在80-100 Gy的伽马射线剂量范围内，IM与NM完全竞争。

更新日期：2021-03-02

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