In Tunisia, the use of the egg parasitoid trichogrammatid wasps to cope with several economic pests is gaining increasing attention. Trichogramma bourarachae (Pintureau & Babault) is among the Trichogramma wasps naturally present in Tunisia and regarded as a potential natural enemy to be used in biological control programs of many lepidopteran pests that cause economic losses. The propensity of T. bourarachae to cold storage with and without diapause induction was studied. The effect of this technique on its emergence rate and parasitic activity was investigated. The study showed that wasps of T. bourarachae treated at the induction temperature of 15 °C for 5 days can be stored at 4 ± 1 °C for more than 30 days without significant loss of their performances. By using this prestorage temperature, T. bourarachae could keep its emergence capacity (77.5%) up to 60 days of cold storage at 4 ± 1 °C. However, its parasitic activity decreased significantly (37.16%) after 45 days of cold storage. These results are promising for its mass production, transport, and release in the framework of national campaigns to control several agricultural pests of economic importance.

中文翻译：

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冷藏对南方赤眼蜂（Pintureau和Babault）的性能的影响（膜翅目：赤眼蝶科）

在突尼斯，使用卵类寄生三足类黄蜂来应对几种经济害虫越来越受到关注。Trichogramma bourarachae（Pintureau＆Babault）是突尼斯天然存在的Trichogramma黄蜂之一，被认为是潜在的天敌，可用于许多鳞翅目害虫的生物防治计划，造成经济损失。研究了有和没有滞育诱导的淡水罗非鱼的冷藏倾向。研究了该技术对其出现率和寄生活性的影响。研究表明，在15°C的诱导温度下处理5天内的T. bourarachae黄蜂可以在4±1°C的温度下保存30天以上，而其性能没有明显损失。通过使用此预存储温度T。bourarachae可以在4±1°C的温度下最多保留60天的冷藏能力（77.5％）。但是，冷藏45天后，其寄生活性显着降低（37.16％）。这些结果对于在控制一些具有经济重要性的农业害虫的国家运动的框架内进行大规模生产，运输和释放是有希望的。